I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Aroun Shipping & Insurance Extra . UPS ail D s VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 4338 Ausitln Bkd Island Pak NY 11558 516/431-4127 516/889-2682 FEATURING UTEWBGHT ENT CONDUIT TUBING & QUICK LOCK SUP ON FITTINGS NO TOOLS FFLEJ~1 13/411 BalO $50 $iio I lOslO $55 $116 -S ETTNCLEJ~U1 l4ll asia $95 $130 I lOslO $100 $136 BREAKDOWN MODEL Fits Cars & Can B Shipped UPS Add Amounts Below Unit Prloe BxlO & IOXIO Flat 440 3W & $46 1 BxlO & lOslO Peaked 535 314 & $46 1 10x20 Fiat 564 3/4 & $73 1 10x20 Peaked S64 314 & $62 1 P3JP3EP41FCF 3F4F 3440034-6003/44503/4-4003/440034-O50314-750 P-B00P500l900P400P400P-900 V-1000 P4LP4DP5F .. FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK
Edition: Model Aviation - 1993/01
Page Numbers: 23, 27, 29, 30, 57, 58, 61, 63, 68, 169, 171, 174
I PROMISED its September 1991 issue Model Aviation presented Tigerkitten E design small 54-in-span model represents effort develop sport/aerobatic design powered 05- 15-size electric motors performance comparable gas-powered models similar size end 1991 article expressed intention developing larger version Tigerkitten Im back tell Tigercat has designed built successfully flown Much Tigerkitten E article devoted explaining approach designing models electric power Presenting same material would redundant Back issues Model Aviation should available no longer have copy September 1991 issue Tigercat direct development its smaller predecessor have added few curves aesthetic appeal moved cockpit back same reason simplified fuselage structure cowl has extended nearly wing leading edge partly added visual appeal mainly airplane assembled entire power system place can easily access throttle/speed control adjustment after removing cowl Also because cowl covers entire motor mount ary1993 23 Followers authors design philosophy RC Electrics will want read about larger 8lb 6oz variant popular Tigerkitten E U Robert Benjamin Continued page 27 author larger variant Tigerkitten E Both models hold own against gas-powered planes Tigercat custom-made floats See sldebar float-conversion details Full Size Plans Available-See Page 176 7 1/16 x 3 x 36-in balsa 2 1/4x2x36-in balsa 13 1/4-in-sq x36-in balsa 9 /n x 4 x 36-in balsa 41/4 xx 36-in balsa 8/a2 Xx 36-in balsa 1 1/8 x 2 x 36-in balsa 2 3/8-in-sq x 36-in balsa 2 1/4-in-sq x 36-in spruce 1 x 36-in dowel 1 x 6 x 12-in aircraft ply 1 1/nx 12 x 24-in aircraft ply 1 /n x 6 x 12-in aircraft ply 1 1/64 x 12 x 24-in aircraft ply 121/2-in spinner 1 medium tail wheel assembly 1 pair3-in Skylight wheels 1 set fiberglass cowl wheel pants 4 4-40 x -in socket-head bolts blind nuts 3 6-32 socket-head bolts blind nuts 1 set strip aileron hardware 15medium-size tab hinges 210-32 wing bolts threaded inserts 10medium socket-head sheet metal screws washers 1 set /32 wheel collars 1 set /32 axle assemblies 1landing gear per plan off-the-shelf 82-56 control clevis assemblies 2control horns adhesive choice 1radio system choice 1Astro cobalt 40 geared electric power system Continued page 23 firewall area can experiment changes motor gearbox installation messing up finish elongated tightly fitted cowl demanding build up dont have work Fiberglass Master Inc has made both cowl wheel pants available purchase airplane flies geared Astro cobalt 40 using 21 SR l200-mAh cells Astro Model 207 speed controller combination turns cleaned-up Zinger 13 x 8 prop 7400 rpm static current drain 27 amps full throffle Flight control via ol reliable Airtronics Cham pionship 7 using standard-size servos SR airborne battery pack Thus equipped Tigercat easily accomplishes quick takeoffs thick wet grass Level cruising flight can maintained about 60% power Roll performance crisp plane executes Left laminated wing tip bows curved around template has cut heavy corrugated cardboard lined pieces A6 x 3/a-in basswood Right outboard right wing top sheeting place January1993 27 [4Ac.}'I--- Type Sport/aerobatic Electric Wingspan 73 inches Recommended motor size type Astro cobalt 40 Number RC channels recommended Four Expected flying weight 8 lb 6 oz Type construction Built-up Type covering/finish recommended Sig nitrate dope Sig Supercoat butyrate dope over Koverall plastic film Continued pore 29 good sequential ioops level flight does best inside square loop Im capable As Electric performance ultimately depends well control weight during building attention detail setting up power end weight range designed airplane slightly larger necessary can experiment extra power airplane will easily carry extra weight higher capacity cells making practical use Astro cobalt FAI 40 system choosing best propeller prototype model weighs about eight pounds six ounces chose traditional dope-and-fabric finish Sig nitrate Supercoat butyrate over Koverall classic appearance long-term durability Fans plastic film coverings can probably save four six ounces Although havent tried Astro 40 standard 18-cell battery pack should give good performance models lower Likewise Astro 60 sport-wind patternwind motor 28 1 200-mAh cells would give model serious aerobatic potential still-comfortable wing loading Id very much like hear anyone tries Astro 60 design Construction Since Tigercat absolutely firsttime builders wont go lot detail will however share few suggestions Unless youre very sure what youre doing dont modify structure Theres just enough job still withstand occasionai rough-and-tumble Mother Nature hands airplanes dont believe trying build crashproof models Resist temptation reinforce structure after year intensive flying Ive found no weak areas use good judgment though selecting January1993 29 Left The fuselage side frames ready sheeted balsa ply Right top outside face right fuselage side 1k2 ply 3M balsa skins place Below inside face 1Io4 ply skin installed Left The fuselage shown upside down building board F-i cross grained chin sheet place Right nose has sheeted sanded preparation mounting cowl wing mount area nose facing up Note bolt holes wing landing gear mounts Left The rear fuselage being built structure upside down work surface Right rear deck formers dorsal stringer rear deck stringers vertical horizontal tails have installed cowl off geared Astro cobalt 40 motor Astro Model 207 speed control totally accessible aileron servo control linkage sure trial fit control surface connections before final assembly balsaleave really heavy stuff hackers dont spare sanding block Wing Begin making template laminated tip bows Make templates laminated tail surfaces same time cut templates heavy corrugated cardboard lined working edge piece A6 x 3/s-in basswood Left Cockpit detail Clockwise lower left radio charge connector radio switch master motor arming switch just front partially hidden beneath instrument panel Astro charging jack cooling fan jack Right Wheel pant assembly aluminum alloy mounting bracket 2-56 bolts author flying Cat uses Astro 40 would like hear anyone tries 60-size motor 30 Model Aviation fuselage tail feathers covering place author used nitrate butyrate dope over Koverall Radio installation details already installed rear tray holds rudder elevator servos various switches forward tray will turned over installation holds speed control battery pack receiver Left Elevator control horn pushrod assembly detail Right Looking down tail wheel assembly elevator control surface linkage Continued page 57 RO TigercatlBenjamin Continued page 30 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled structure Allow laminated parts dry overnight true up sanding block Make template cutting Out wing ribs W-6 template can used make full count generic ribs can trimmed necessary make variant ribs Cut trailing edge TE -in sheet beveling shown W-3 wing section drawing slotting accept back ends ribs Position lower -in-sq spar board trial fit several W-5s position trailing edge shimming l/ off board Add top /4-in-sq spar still gluing adjust TE shim necessary until -in-sq spars lie above other perpendicular board Now can assemble ribs real followed top spar trailing edge used Hot Stuff UFO Thick gluing operations occasional shot thin formula in-place assembly finish framing wing panel add leading edge fit tip bow add 3/33 tip base parts latter parts lend stiffness prevent distortion under covering loads True top surface wing careful sanding Install leading edge center section sheeting including quarter-round radius pieces center trailing edge cap rib cap strips Make ply spar doublers Turn panel over block square board Install doublers true up bottom surface Install aileron control horn assembly against inside top sheet add bottom sheeting close up panel Build aileron using completed wing panel guide ensure proper fit Use W-3 wing cross-section drawing guide beveling aileron leading edge have hinged building board can assemble left panel around protruding spai doubler ends otherwise follow same assembly sequence used first panel Make sure left panel fits place spar doublers before close bottom surface may want join panels before adding bottom sheet case make certain panels proper alignment desired 6 total dihedral angle depends spar doublers being correctly aligned Build second aileron Add 1/32 ply reinforcement under center section trailing edge Open up top center section aileron servo Get out sanding block shape smooth everything until youre satisfied Tail surfaces Dont expect just whack some shapes out 3/s-in sheet tail surfaces require little extra effort results well worth Begin horizontal tail laying out 3/s-in-sq members -in dowel elevator joiner leaving minimal hinge gap between stabilizer trailing edge elevator leading edge Assemble laminated parts around parts structure initially built piece ary1993 57 Get RV guide tailored fit needs Radio Control Buyers Guide 16th Edition Get R/C product source thats tuned needs Radio Control Buyers Guide 16th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers RIG hobbies including planes helicopters cars monster trucks boats engines radios field accessories tools years guide custom tailored fit requests finished creations allcolor Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get RIG guide perfect fitthe Radio Control Buyers Guide Available November 1992 #12110$1195 Look book local hobby shop call toll free 8OO-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Include postage handling US $300 outside US add 18% mm $400 Wisconsin residents add 5% sales tax total Canadian orders add 70/ GST total Payable US funds Prices availability subject change Kaimbach Publishing Co Dept X0598 21027 Crossroads Circle PO Box 1612 Waukesha WI 531 87-1 612 Dept X0598 1Custom Balsa Die Cuttingc 2 Balsa Sheets74 5/16x 1-48 80 104 1/8x 12x24613 36 48 38 1/8 x 1/413 1875 3/8x 1-V251 94 105 3/16x12x24363 761/2 x 279 1051061/4x 12x24420 1 1/16 x 22840391/8 x 3/8 14 19 7681073/32x 12x481004 2 1/16 x 332 44 40 1/8 x 1/217 24108 1/8x12x481149 3 1/16 x 453 71 41 3/16 x 3/1613 1976C 4 3/32 x 235 50 42 3/16 x 3/817 21Balsa Blocks109 3/16 X 12x 48726 6 12 110 1/4x12x48838 5 3/32x 339 53 43 3/16x 1/222 31~ 77 1-/x x262 112 1108 6 3/32 x 467 92 44 1/4 x 1/418 27 7 1/8 x 238 54 45 1/4 x 3/819 3078 2 x 274 130 110C 1069~DUCK WOODS7 2 x 390 149Spruce Sticks 10436 48 446248 1/4 x 1 43 60 Custom Cut Balsa 81 3 x 4 160 299 111 1/8 x 1/8 17 23 113/16 x 358 79 49 5/16 x 5/1624 32Top Quality Prices81B112 1/8 x 1/421 28 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa 81C1131/8 x 3/82333 1143/16x3/162939 131/4 x 25172513/8 x 1/231 53 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8x 3/44863 1285 N Union Street821x21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 X 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16 x 382110551/2 x 3/453 711 -209-464-0180852x22311195/16 x 5/164362 185/16 x 4139185561/2 x 16487862 x 33351205/16 x 1/24875 193/8x26895575/8x5/85472 C L872x44751215/16x3/46789 203/8x390128583/3x3/47598 35151223/8x3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893x47151233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 89B1241/2 x 1/26992 231/2 x 3 109 155 608forBulkhaads&FuselageSides 89C1251/2 7101 241/2 x 4 230 268 60C118x6 x 48 125 248118x12x48 22590 y Light 1258 24CBalsaTapered911/8x6x24 115 125C 1/8x 12x24173 BassSticks AileronStockBus Hours 800-500 PST MF921/8 x 24 x 243453648 Balsa Sticks36 48We accept VISA MasterCard93 1/8 x 6 x 48173 126 3/16 x 3/16 28 37 3648611/4 x 14363 Personal Chacks & COD941/8x 12x 483451273/16 x 1/42430 261/16x 1/160611611/4 0Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 1V25782 0 add $450961/4x 12x242591293/16 x 1/23746 281/16 x 3/161016631/4 0 mum Order$2500971/4x6x482591303/16 x 3/44860 291/16 x 1/41018645/16 5984 itornia Residents98x 12 x 485181311/4 x 1/43442 301/16 x 3/81120655/16 x 26794 6/o Sales Tax 98B1321/4 X 3/83949 311/16x 1/214 24 66 3/8x 1/2659298C133 1/4x3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa ly Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/x84122 TrailingEdge99 3/32x6x 122531363/8x3/47290 343/32x1/41318691/2x1/801153648100 1/8x6x123111371/2x1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/21831101 3/16 x 6 x 122191381/2 x 3/496120 36 3/32X 1/2 17 24 70B723/16x3/42950102 1/4x6x12 242 1388 37 1/8x 1/8 09 13 70C731/4 x 13661103 3/32x 12x24 503 138C Contact Us Kitting Needs Add /8-in ply TE doubler x 3/s-in ribs followed center section structure elevator TE gussets Note 3/s-in-wide opening left center R-l can extended fit flush bottom surface horizontal tail after assembly Cut laminated parts tips Remove assembly board sand well Shape outer edges 3A6 radius no taper airfoil section Build vertical tail rudder same way Leave forward portion vertical tail leading edge unsanded until after assembly fuselage two portions can blended together Fuselage Pay close attention laying out fuselage side frames lots little pieces has go just right place Take step step youll have very sleek functional fuselage everything fits just intended side frames based -in-sq longerons upright/diagonal members Note top longeron extends nose fit notch F-l ends flush front former F-2 F-3 F-6 part basic side frame Cut slot forward F-fl accept F-5 later Build first side block sand top surface true up Cover side clear protective sheet build second side directly over sure build both left side right Add A2 ply nose sheeting 3A2 balsa sheeting side sheeting forms outer surface skin fuselage nose sheeting lies inside cowl ends flush front vertical -in-sq member will butt against back F-I extends top top longeron bottom F-2 joint between front F-3 A-in-sq diagonal 3A2 balsa sheeting begins back edge fiberglass cowl will fit A6-in step formed compensates thickness cowl wall 3A2 sheefing extends outside edges side frame Turn side frames over add inside liner Like nose sheeting liner will butt against back F- 1 liner extends rear -in-sq vertical wing trailing edge bottom lower edge trimmed smooth radius down meet lower longeron Cut rectangular hole ply F-7 F-5 F-7 inset F-fl F-5 fits forward F-fl Both formers rest against inside 3A2 sheeting Cut out remaining formers Place side frames upside down over plan top elevation Square sides join top using -in-sq balsa crosspieces leading trailing edge stations Add F-5 F-4 F-7 finally F-7A assembly still board fit wing adjust wing saddle necessary square axes Use incidence meter make certain 30 positive incidence indicated plan Drill pilot holes through F-5 leading edge -in mounting dowels Remove wing saddle open up holes install dowels Refit wing put back place make sure still fits saddle properly Drill through trailing edge F-7 10-32 wing bolts Install bolts set wing aside Reposition plan fuselage can placed upside down over top eleva tion nose off edge board way can install F-l close up nose fuselage squared over plan Add F-l cross-grained 3A2 balsasheet chin covering latter has sheet inset located forward landing gear forms mounting lip cowl see plan Join fuselage sides tail add remaining -in-sq balsa crosspieces /32 cross-grained balsa belly sheet /s-in ply tail-wheel mounting plate Remove fuselage board Install horizontal tail making sure mounted square Make main landing gear shown plan use off-the-shelf unit several will work airplane critical factors check adequate prop clearance widest possible tread Also certain gear can adjusted Conrinued page 61 58 Model Aviation vities began John Eaton Larry Wolfe flying 4-Seasons trainers applause amazement onlooking students competition really began Judges queried group specific areas aerodynamics covered Saturday classes Neither group allowed deductions Next original aircraft judged design Magnolia scored slightly higher craftsmanship Savanna edge Going flight competition schools scores tied Pilots both aircraft asked fly required maneuvers separately announced John Elliot Cox Hobbies Magnolias plane flown Larry Wolfe first performing loop slow roll halfthrottle figure eight Immelmann slow-speed flyby full-throttle acceleration end followed landing Next John Eaton powered up red-and-gray Savanna bird executed same flight maneuvers cheers encouragement group scores tallied Magnolia edged out Savanna one-tenth point slow-flight characteristics figure eight flyby First- second-place trophies provided Compton Tail Spinners awarded school What lessons learned result Saturday Enrichment Academy Some students commented learned socialize better work group saw integration practical academic learned things hadnt done before experienced things never thought about Would again Overwhelmingly answer yes two men vision proceeded pull off Well theyve probably created monster school district nothing short ecstatic about combination business volunteer support give students something extra What true community partnershipAmerica its best just miles devastation Los Angeles riots Hats off Charles Kelley Prentiss Ellisand helped make dream reality Aeromodeling alive well West Coastblazing trails pardon pun future Anyone interested putting together similar program school community urged contact Compton Tail Spinners Charles Kelley 151 West Scott Street Long Beach CA 90805 rcatlBenjamin Continued page 58 camber especially toe-in see plan As almost tail-dragger ground handling becomes unpleasant some toe-in main wheels Drill landing gear F-4 three 6-32 screws Countersink holes F-4 inside blind nuts mount gear Mount tail wheel assembly ply baseplate Remove landing gear set aside Assemble rear deck formers F-8 through F-12 cowl formers C-l through C-S Note C-l C-2 recessed C-2 rests directly against C-3 Add top stringers between C-l C-S top -in-sq stringer between F-8 F-12 Adjust tops tail formers necessary top -in stringer lies straight meets leading edge vertical tail trial fitted satisfied fit mount vertical tail permanently fitting bottom portion R-l slot horizontal tail Add side stringers rear deck followed sheet-balsa fairing horizontal tail root fairing forms base Continued poge 63 Jet Fuel Tanks So Inexpensive Theye Going Fast Somebodys finally come up ducted fan fuel tank costs less Boeing 747 Whats 1 1-ounce Sullivan fuel tank #380 has advantages higher priced tanks well some sought-after features its own instance its seamless greater protection against leaks its reversible left right tank Only5/i 6 thick fits around virtually all4W 6 diameter fan units because uses standard Sullivan hardware replacement parts readily available Fully equipped glow fueFpartsa simple kit enables convert gasoline use easily vent tube bubble also gives maximum capacity longer flights between re-fuelings Fly down toyo dealer soon ask about Sullivan jet fuel tanks prices arePRODUC1 down earth weve made easier thanP0 Box5166 Baltimore MD21224 ever take off Getting Belter Ideas Off Ground January1993 61 Letters Editor Continued page 5 direction consistent increased flow velocity according Bernoullis law creates decrease pressure decrease greater over upper surface lower net result lift Also sketches show flow molecules separating surfaces separation does indeed [occur] large aircraft near stall small models some degree under almost flight conditions manner shown sketch separation plays no part production lift fact lift would greater no separation As gospel air considered stationary flight created craft moving through ifflight equally well created air moving aircraft fixed wind-tunnels work gliders can slope-soar Later deBolt makes distinction between gas fluid Equating fluid liquid common error Both gases liquids fluid look up Websters common error perhaps therefore excusable goes say loosely knit nature air opposed liquid characteristic makes flight possible Wrong speeds well below speed sound aerodynamic theory based assumption air incompressible theory experiment agree quite well same theory works water other fluid Hydrofoil boats have wings fly water Properly weighted model gliders fly very nicely under water Later says Lift drag increase square increases speed implies speed increases 10% lift increases 10% 10% 1% fact increases 21% correctly lift drag increase square speed rather are increases speed toughest part about explaining lift explaining Bernoullis law states pressure reduced velocity increased seems contrary nature Bob Meuser Oakland California Paper Planes Young People applaud efforts Hampton Virginia group described August 1992 issue World Record Paper Airplane can proud achievement hope serves example other groups around country Paper airplanes seem hold natural attraction youngsters AIAA St Louis Scietice Center have cosponsored paper airplane contests St Louis recent Continued page 115 Tigercat/Benjamin Continued page 61 solid nonstick base lamination process will assured glue wood edging securely wax rubbing spare candle Working wood strip time wet piece lightly draw around template youve chosen wood carefully should easy Use plastic sheet waxed paper under form prevent its sticking board Secure strips temporarily inserting heavy pins along outer edge template inner strip pinned place applied generous bead Hot Stuff UFO Thick inside strip moving pins outer edge worked way around template kept strip tension working place first strip doesnt come out satisfaction consider practice exercise another Its really difficult results worth effort Give finished laminate shot Kick-It accelerator allow set few moments remove template slight springback wont problem part assembled Continued page 68 A Push-Rod Selection Leaves Up InTheAir Its true offer complete line push-rods world thats important reason choose Sullivan push-rods fact once its model doesnt matter other push-rods carry just want yours work best its will Sullivan push-rods designed built maximum strength flexibility dependability Theyre also light weiit well simply best uy Which means get widest choice Sullivan PRODUC push-rods get best choice P0 BCx5166 Baltimore MD 21224 Getting Better Ideas Off Ground January1993 63 S Discover SECRET TO HASSLE-FREE CHARGING Dont miss peffect day because uncharged batteries amazingly simple AUTO-TRICKLE ADAPTER converts ALL overnight chargers FULLY AUTOMATIC TRICKLE CHARGERS Nothing else like Simply plug wall plug overnight chargers push button forget shout batteries whole fleet will ready next day week month year Nothing solder connectors buy 100% solid stase device safely reduces chargers output pulse trickle after t6 hours Directly supports 1 3 chargers However powerful 120 Watt capacity easily HANDLES UP TO 30 CHARGERS Nothing else comes close convenience simplicity safety cost effectiveness Tigercat/Benjamin Continued page 63 fuselage place attached rails minimum six sheet metal screws washers easy removal Note also rear portion tray separate piece designed hold rudder elevator servos various switches charging connections Trial mount equipment fit control surface horns hinges hang control surfaces gluing satisfy yourself everything works intended As no doubt realize now subtle advantages electric power can test-run power system point making oily mess structure Fit fiberglass cowl after opening up air intake hole front An intake size shown photographs will provide good cooling Because demonstrate airplane lot have added fan accelerate postflight cooling motor battery allow charging soon after landing Instead waiting 20 minutes plug fan immediately after landing have pack ambient temperature 5 10 minutes An inexpensive Radio Shack unit intended cooling electronic installations fan attached Velcro part installation operated through separate plug connects directly 12-volt charging battery Depending construction technique thickness fiberglass cowl may have either sand down sheet structure forward F-3 between C-l C-2 build up area slightly 1/hi ply fit cowl neatly Some tolerance has designed part structure allow individual differences Test-run motor cowl spinner place Fit wheel pants Continued page 169 68 Model Aviation MANUFACTURING CO now Imports complete line world record holding ROSSI aircraft marine helicopter race car engines includes full line parts accessories plus full time ROSSI REPAIR CENTER US SIG-imporled ROSSI engines come full 90 day SIG WARRANTY against work manship manufacturing defects SIG MANUFACTURING CO INC PH 515-623-5154FAX 515-623-3922 . Montezuma IA 50171 Toll Free Orders 800-247-5008 Model ATA-CXt Works existing NiCd overnight tC/lO chargers Yes works cordlem power tools toys individual cell chargers etc T 1 E Hurry f/se secret out Get AUTO -TRICKLE ADAPTER TODAY YOUR HOBBY DEALER send $3995 S&H Directly Tejera Msccosystems Engineering Inc 813-968-9510 PO Box 340608 Tampa Florida 33694 4-e- since 1985 Kits available hobby shops everywhere write current product information PO Box 553 East Northport NY 11731 516-754-8628 Rubber ne Power Free Flight Display control Line Electric Power RIC Airplanes new illustrated 32 page tabloid size catalog us & canada *ioo Foreigh $300 Penn Valley Hobby center 837-A W Main St Lansdale PA 19446 215- 368-0770 Ask Original55 EmuImI Lbae VWIDAISOAVbbIS Call Today Dealer Inquiries Welcome LATHES MILLS -METALS -SOOKS -PRECISION INSTRUMENTS COMPLETE CATALOG $200 1OOOs Steno AMPBELL TOOLS CO 2000 8 O5,a ROAd Spr5ghe5d OH 45505 513 3228562 RC TigercatlBenjamin Continued page 68 youre using wheel pants molded own plug proved tight fit Skylight wheels relieved somewhat lower edges use narrower wheel wont problem Make up brackets aluminum brass sheet secure axle assemblies against landing gear leg Two short 2-56 bolts go through inside brackets engage locknuts type plastic fiber locking insert have secured inside wheel pants Hot Stuff enough room inside work rough up inside surface fiberglass pants fillet nuts carefully thickformula Hot Stuff installation strong enough Check photographs see what looks like Final assembly finishing Pull everything apart give entire structure yet another sanding begin covering finishing process choice am die hard lover dope fabric structure rigid enough work well plastic film coverings modelers prefer Regardless finishing system choose strongly suggest reinforce entire center section wing well fuselage back trailing edge light G75-oz fiberglass cloth applied over bare balsa after sanding wood smooth possible have used both polyester resin brushed directly through cloth thin-formula Hot Stuff latter process bit convenient Spray very light coat 3M 77 adhesive over area youre working carefully lay glass cloth position 3M 77 will let reposition cloth pat down exactly way want flow Hot Stuff UFO easiest work directly cloth cloth just saturated spray lightly Kick-It followed immediately light block sanding cleanup Continued page 171 SS 4st94 ffoosh-h-It oniy $490 Koosh-In-It tough flex ible rubber/fabric laminate softens vibration between engine fuselage Cuts easily scissors installs minutes Sheet 21/2 x 4 x 1/16 thick Money back completely satistied Send check money order $490 plus 90 P&H $580 Balsadust PO Box 78 New York NY 10021 212 737-0071 Fax 21 2-737-0072 , FREE Order now reivea sam- AIca pie issue Balsadust QuaItef4s0~Ual llrst magazine exclusively R/C entertainment-- $400 value NO NEED TO LEAVE THE KIDS AT HOME ANYMORE Lanler RCs U-2 Free Flight Glider Cat No 92213 Fuselage Length 56~ Flying Weight Wing Span 74 Area 629 sq Send SASE Free Color Catalog TODAYI Lanier RC PO Box 458 Oakwood GA 30566 Electric F ight Lightweight 12 00money back Adjustable switching pabst Snideness tenainal easy hookup $2 ON/OFF Controller995 Power save weight 20 Size 22xL3i63 efficiency OA6V ioso Add tim shippiog Colifoeda ,sidects odd 7255 $217 Send Check money order C,etesoithliHigh Sky Faloba cosnootor3929 Kansa8 St #9 other cesoectors &O San DlegoCA 92104 obo ooiIobIe Worlds Largest Foam Glider Will Keep Entertained Hoursi Phone 7061404-532-6401 900-530 EST M-F FAX 7061404-532-2163 LAThESOMILLINO MACHINESeSUPPLIES SEND $100 FOR B&iE COMPLETE LoG CONTAINING MACHINERY 304 562-3538 S d LOG $100SUPPLIES AND AT S PO Box 536-Y icane WV 2S526 4 NORTHEAST AERODYNAMICS_________ HUDSON NEW HAMPSHIRE 03051 603 881 5899 THE FINEST KITS YOU LL EVER BUY AND BUILD Bel -Air41 epitome SpoO bi-planing BeI-Air60 easy handling superior acrobatic biplane Sport-Air40 just another sport plane excellent full-fly ship popular Train-Air Series Train-Alr20 economic eas ding flying first trainer Train-Air40 just another trainer largest high wing trainer its engine class 44 Hydro-Floats aero hydro dynamically proven design ASK FOR THEM AT YOUR HOBBY STORE OR CALL 603 881-5899 IN HUDSON NEW HAMPSHIRE VISA AND MASThR CARD ACCEPTED FREE HORSEPOWER NU-LIFE Fuel Additive removes carbon varnish run thru GUARANTEED HP RPM Increase cooler run Proven Safe NU LIFE-i Engine $700 ne $1000 ww win rU Box 8236 MA Whit Plain. NY 106024236 ary1993 169 RC TigercatlBenjamin Continued page 169 single coat primer sanded off provides fine base covering whole process adds two three ounces airplane strengthens structure immensely wouldnt finish airplane youre using painted finish may want add windshield after covering has applied sealed Cover windshield masking tape leaving exposed area about 1/ wide base Smooth join line judiciously applied filler careful sanding extend paint job right up over joint pull off tape windshield will look its molded right top cowl aspect covering job requires special explanation youve seen designs print already know Im devotee fabric fairings base vertical tail As matter fact cant build airplane making such fairing Relaxits easy Cover horizontal tail fuselage bottom Cut two pieces covering large enough cover side fuselage nose tail including entire vertical tail Leave yourself generous margin extra material grab work Carefully cut slot will allow two pieces turn fit around root horizontal tail also being positioned correctly fit rest fuselage Attach covering stab root top bottom along trailing edge vertical tail finally along foot lower longeron forward tail Doing some careful stretching fitting start attaching covering center curve fin leading edge joins top stringer working way toward fin tip forward along stringer Finish attaching material relevant points forward fuselage Youll immediately see whats going covering whether plastic film heat-shrink fabric will cooperate lying smoothly along edges minimum wrinlding faired area careful pull out much slack possible shrinldng covering will produce beautiful faired fabric fillet will have running find someone admire careful shrink fabric first side until have covered second side youre concerned highly stressed seam dorsal stringer might slip punch series pinholes along stringer carefully seal seam thin-formula Hot Stuff before heat shrinking point can permanently hinge control surfaces reinstall radio power components interior fuselage tight theres room install Continued page 174 f D & J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. 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FOOT PAD P03FOLBUNGiE ~BALL 3/4-&00 3/4-650 3/4-750 3/4-650 3/4400 34-&00 P-90Ol900 P-1000P-7501800P-B00 WE MANUFACIURE & ST SEVERAL OTHER SYSTEMA & HAVE RJU IKE O4 ACCESAL2RIES AU WITH THE VEIEOI1 H MHO CALL FAX Oft MM IS TO RACE YCIJR OI5ER OR TO REWIE YOuR FREE CATALOG ary1993 171 RIC PILOTS Make Living Flying RIC Remotely Piloted Vehicle manufactures utilize B/C pilots external operators have skills necessarytostartacareerasan external pilot Enjoy satisfaction hobby earning good living Send complete Information package ivhlehlncludesa list prominent employers lnthe ld Send ad $465 135 SH B/C JOBS 4195 Chlno Hills PkwySuite335ChinoHills 9 MoneuBack Guarantee 4 upsups ONLY POP UP CANOPIES $34900 1 OxiC SETS UP IN LESS THAN 30 SECONDS NO TOOLS REQUIRED OTHER SIZES 8x8 10x15 10x20 SHOP TASK Original Home Machine Shop Designed USA Shoptask 3 Models Citnose An Low As 9959 3 Avis Power Feed AvoilaCle tO Month WarnOnto 100% Parlo 0100010 Tooling Available 07 Owing v Mill Table ROE CATALOGUE DONT GET STUCK WITH CHINESE COPIES SHOPTASK P0 BOX 753i -TACOMA WA 98407 OINCC teat Its Easy SN Safety Starter Safe one-push starting Recommended John Prestons Safety Comes First column ModelAvation Nov 90 Easy assemble battery starter $6495 Accomodates small 12-volt battery r sizes available Add $700 packaging shippina IUPSI Texas residents add 825% sales tas Allow approximately two weeks delivery RC TigercatlBenjamin Continued page 171 Astro cobalt 40 system neatly plan what youre doing Make sure airplane balances shown plan Once youre comfortable model might want experiment moving center-of-gravity back somewhat suggest leaving alone test-flying install radio components except servos Velcro use same material motor battery battery posi non balance point have established cut several carefully located small holes plywood tray run two three nylon cable ties through holes 21-cell pack will stay place during aerobatics yet cable-tie system wont interfere cooling Flying Be sure range-check radio both motor running first few flights try allowing airplane ground run hundred feet sure gets aloft plenty airspeed Once youre satisfied trim lowspeed handling start experimenting thing aware Tigercat aerodynamically clean will go what seems like forever unless slow down well out landing pattern Make few practice approaches have plenty go-around power reserve Unless very windy find myself landing airplane pulling power way off least hundred yards out normal approach glide Youll probably find Tigercat prefers landed fast main gear rather full-stall three-point attitude Once youre familiar model suspect youll rapidly fall love youre trying make up mind whether build design theres Astro Flight video will give chance see what Im talking about 30-minute tape includes several minutes footage early test flights Tigercat prototype Contact Astro Flight directly information about video Think Electric let know Tigercat flies Seal ALBATROS DVa sing span Ieogte sq sing area l3-23Cl5 evgtnes4chRICt2ho RCQS-17 BILL EFFINGER* SAYS Only Plann Pattern Sets nine tire assented designs want have seteoted best olasaic designs atr Ome too choose item paeens patt ate Important endusive teatore Or3 Scale Cessna 170 144 slog span tO hoglO 2015 tqv sirrg asaS sir SIC 02 CID engines 17 ho RC3S-5$3453 t/6SCalS Cessna 170 RceS-5$14 0/3 Scale MONOCOUPE 90A toe oengspan ength 2100 sq erng area 00 3CC 15 vngrnes RC3S-4 0/3 Scale PIPER TRI-PACER PA-22 tt5-l sing spat ooex tqin sing ova 00 tvO Cl0 engines 4-5 oh SC aparoc lbs nitl overall length RC3S-3 0/3 Scale PIPER CUB J-3 tt-9eitgspov00singlhoeOOtq nn4Seae FOKKER DVII singarea4clr SIC2OtoOOCIDener g pa 2220vq etsgoea esgines 00CC Deng e 3-C ho RC3S-2$2990RCQS 5$24 0/4 Scale SE-5A e0l srn span 25 sq ix siog area 7t 00 engross RCOS-7$24at 0/4 Scale SPAD C-XIII 7e-I wing span otOg sq sing area tO 3t engross Cogoahie flyer caplurex rosagroaten RCOS8 113 Sect FAIRCHILD 24 22 OlD engines oo 17 lbs less R/O 14 wing span 5 ch R/O Plans show In-Line Radial Engine Versions both Fibreglass Oowls Available o -RC3S-6 $3495 Wi/B Sea FAIRCHILD 24 72 wngspan 40 65engnes R06S6 $14~ 0/4 Scale FOKKER DR-i TRIPLANE 72srngspant772sqroanngatea 5 soeng es RCQS~S24FD1WNNJaWNiJ7IA9A 0/4 Scale SOPWITh CAMEL F 1 ad sing spanOtsxsq sitg area hosloSC Plyssod 5 balso cowttuClios oven ax sq dtareings RCOS-1 1$24- Prices complete plans sub assembly & detaIled parts lists PLEASE ADD $300 shIppIng maIlIng tube New Plan Sets brochure $100 refundable first order WE TECHNICAL SERVICES PO Box 4201 44-A Atlanta GA 30342 174 Model Aviation 4SUNGLASSES 195 $2S&H 100% VV Protection Shatterproof Excellent Optical Quality Tints Fit Over Prescriptions S Kys PO BOX 1000 DVMFRIES VA 22026 800-227-9318 its scale kits engines accessories want & want em now got emFrank Tiano .boat car kits hardto-find pails & anything need want.its stock Joe Manzella SHIPPED WITHIN 24 HRS U1307K MIDIargrao Wusj0a74f~1669 HOBBY SUPER ofuilK