NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC Aircraft Sommers RC Club Sonic-Tronics Inc Sterling Models Swanson Associates T & D Fiberglass Specialties Tatone Products Corp. Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005
Edition: Model Aviation - 1982/08
Page Numbers: 76, 77, 78, 79, 80, 81, 82, 153, 154, 155, 156
NO OCR TEXT NO OCR TEXT ning wing construction support vi- brating power plants suggested converting already-completed foam core wing unwise also something going Since wing handle stress tail booms tail surfaces seemed adequate spars also handling engine nacelles method used installing nacelle bulkheads creates very little interruption bottom wing skin little loss surface strength design nacelles aligns tank carb engines will run dependably trainerwithout pump After installa tion completed put model under great deal stress see add-ons would safe safe indeed ready real test Before taking twin field set up engine sync driveway After half-hour adjusting servo throws needle valve settings 40s singing hearts out chorus pull props surprising model taxied fast decided add brake nose gear Finally shut down twins began adjusting sound silence Only did notice neighbors standing around watching really own little world concentrating engines neighbors smilingI guess didnt mind noise took the twin inside announced wife Im love Yes said surprise heard everyone probably heard seemed strange nervous about first flight model end runway such familiar face sound twin engines reminded difference As long both engines running would little difference flying compared pusher except greater speed Since engines practically jammed against fuselage twin rudders fears one-engine-out probably unfounded novice never seen twin before could have enjoyed first flight did Once felt comfortable model time surprisea 500-foot bright yellow streamer release small drag chute seemed anchor itself point sky letting model pull away drawing bright yellow line behind streamer traced twins spirals turns like artwork Later twin connected end streamer visibly make large loop size streamer really impressive dropped along runway next couple landings showed need replace streamer drag chute tight landing areas some places planned fly chute would honest necessity Also chute takes lot less time pack 500foot streamer Besides its fun come like yourre just kidding pull twin stop everyones disbelief Snapshot 3 already part model air show presentd Virginia Air Show Squad ron welcomed back its new look Combination twin-engine sound Space Shuttle real crowd pleaser model air shows Care must taken pre vent receivers interfering anotherdifferent RC bands worked best cord attached stab elastic pull out drag chute upon release Plans Space Shuttle small version September 1981 MASpace Shuttle II larger May 1982 issue John Preston photo Luther Hux right adjusts engines Bill Hershbergerleft anchors Bill will fly twin Luther can release fly Space Shuttle glider John Preston photo Design nacelle lends Itself cowled-in upright engine author chose side mount easy access downward position exhaust Photo Ml Seitelman RUDDER flJNEC11NG CABLE 1/4 X 2 ELEVATOR IISCREW DISMANTLES STABIUZE- INTO BLOCK PUSHROD CASING __IOF HARDWOOD OPTiONAL TO ELEVATOR/ / NACELLE BLOCK///ROUT STABILIZER HALVES 3/32 DEEPI/B DOWELS STIFFEN JOINT 1/4 X 1/2 BALSA 1/8 BALSA SIDES 1/4 50 LONGERON 1/4 BALSATOP ____1A6BALSA BOTTOM TRIANGLE CORNER SlOCK 1/8 PLYWOOD SADDLE TO WING SERVO RODS TO AILERONS BOOM ATTACH SCREW TO HARDWOOD BLOCK 3/B11/2 AILERON SPAR 1/16 SHEET OVER FOAM WING 1/2 X 2 AILERON BLKDS STOCKENGINE MOUNTS F 1 1/8 PLYWOOD1/4 NYLONBEYOND BOOMSTIP BLOCK I/B X I/2HARDWOOOX 1/4 PLYACiOD BRACE Fl TO F3 MOUNTS IN NACELLE 2 1/2 WHEEL ONIF LG IS PUT THERE1/8 X 3/4 HARDWOOD 1/8 ALUMINUM GEAR3/BX BALSA LEDGESPAR THRUTO C/S CHOICE OF LG YOKE I/B BALSA SIDES AND BOTTOM UNDER FUSELAGE 3 MAIN WHEELS AND STEERING BELLCRANK bc 004 boo 0 0 0 Le aueesI,rear retLOAYWUOOFe SO WOWOFO -4aSoe#eO-OJTOF -SASS2 FrOtS 10 OCOt SWUT OMTSeOrF ooorrea ~ F FF000 SSCELO SOFarsLaOSaeS-earaacc.o Fa7 p10 "2--eas cleF 0501$ een SetsSeat00 maCse po goess/boo eaFIFOO La Toe j tree/os roe ears 010-FFarF,5ra0055 r-0 trrrsamar\ WI Se/oarF.a 0//NSf 110 0FsrFOee 00 negate erreste/ 7711 tale,a/leo c2 ______FOe Ff0555010 nears eoaoaeo aaaesrserrs Fe -MO 00 toSt VoerOse {reotSO 5r05 5005FOb tOF4ItO t15F0*e SNAPSHOT TWIN osarsaooereromrroa teams first twin completion Space Shuttle models twin became mother ship tow Columbia release alti tude Bill Hershberger co-pilots twin land Columbia traveling locate local RC clubs turn twin over other qualified pilots can demonstrate space shuttle Quite often co-pilot will suggest space shuttle flightsvirtually arrival new spectator club member co-pilot doesnet get watch shuttle much least hed better watching shuttle very much can usually pin him down confessing really wants get hands twinrs controls again Since twin conversion pusherpowered camera planer things design arent necessary model today However plans match present model very few outdated details being eliminated did include swing-out nose section since have install nose gear servo order make room camera have offered optional nacellemounted landing gear would plan use future building frequently suggested changes move engine nacelles out align booms would look great keep mind one-engine-out flight engines about 24 inches apart could challenge also problem getting gear together unit Think changes through very carefully asked offer detachable boom system must fit model small car twin has one-piece wing tail extent design tested Howeverr design similar very successful model type Snapshot models designed around specifications Sparrow Tele plane Project detachable booms design worked well must thank Sparrows design team sharing plans earlier Sketched-In cockpit outline shows author anxious see what completed model might look like Turned out nice Drag chute work Excellent landing results can it wows audiences model air show situations Mi Seitelman plc 80 Model Aviation FULL-SIZE PLANS AVAILABLE. SEE PAGE 156 American Aircraft Modeler article Construction Wing instructions assume builder has general background building foamcutting techniques wing produced first way can test wing cutouts five body pieces against actual airfoil shapes completed wing good fit Begin producing foam-cutting templates plywood Formica Mark call-out lines template Cut foam block about 36 x 12 x 4 Mark reference line around blockboth along span chord Mount templates foam carefully noting relationship between reference line template block caller should cut along rootlarger template move fast possible causing drag lines tip template will cutting very hot template has drawn oversize allow overcut sure both helper start together top wing cutting completed cradle wing upside down attach templates box spar cutout Save foam cutout fill-in later after spars installed Trim L E TE remember T E jogs aileron hinge strip Use soldering gun pencil cut rear spar groove Install box spar assembly rear spar put epoxy dihedral brace slots will cut later Fill channel runs box spar wing tip foam cutout piece Sand spars flush airfoil Install tube aileron pushrods Cut out wing holddown blocks instalL Use soldering gun cut grooves three dihedral braces test fit glue Attach wing sheeting wing resting foam cutouts cutout blocks should flat surface wing constantly chang wing before installing engine nacelles access hatch removed servos installed booms Kraft antenna mounted wing LE nose compartment first carried camera now carries radio make room chute compartment under wing Seotelman pic August1982 81 SF //ABAS/AMBBBSBOB—ill TWO SO /O/T AL SAAB ArBrBAa 5/0MM TuBa 3MCllASTS/B BAA B t BMA BAA SO SlAB OSSOSTE MRS MAOOBBTCAABBm V7 U W37f F AM maMa I BOA Bat/TOOT 0/00/TO518BL BOBaBALAOB SaT II BBS/B AM AVIS __________00j taslos 11AM S/AS BaBS FOB MTMAMO SAC BOOBBOS4 II H /jjA 5055 FCLBAFSOBBM BOOS_OlO/A/-- BOB OBWOMAB AOSTO400BOASASOLOMSAI 627 zIffI CTSO//OSOBAIOATOABSASBSFOAO/ABBAOIf Bat / II0 OOTflSAOPOTMB]I SNAPSHOT TWiN AtFTWA AMOB SOO lot1/BAA/SO BOO 0 AtABOBO SAM FB I/O BTAOFSFBM TM /0 00 B/tO SOOT Originally Snapshot Twin flown single pusher engine series aerial camera planes After publication second Project Snapshot article included color picture National Geographic Societys membership building society asked see Luthers collection slides after story about model aerial photography appeared societys employee newspaper requested use slide post card place gift shops National Geographic Society has given credit use model airplane post card reproduced type credit prominent people organizations helps promote good public opinion about RC flying model aviation general National Geographic Societys Membership Center near Gaithersburg Maryland handles records 10000000 members birds-eye view takes radio-controlled model airplane reveals centers springfed lake recreational areas 0 C z E ing shape cutouts will protect against waing foam core sheeting balsa put hardest wood bottom surface Let wing core dry 24 hours inside cutout blocks several pounds weight evenly dis tributed over top block Trim sheeting attach L E. T E. aileron hinge strip tip blocks Sand contour Shape remaining TE stock aileron shape set aside Mark location spars bottom wing Use hat pin test locations Mark future locations fuselage nacelles tail booms Find openings box spar engine boom-mounted servo wtres cut through sheeting Find end aileron pushrod cut through sheeting Again use hat pin trick locate tubing Cut two -in sq x 24-in strips straight balsa attach wing tips running chordwisestarting TE running out past L E bars will provide line-ofsight reference aligningthe wings also dihedral angle Use 30-mm epoxy install dihedral braces assemble wing halves Continued page 1S3 82 Model Aviation ramariy compeeu earmy pusner version Re inforcing rod between booms attail section removed clear area drag chute Side fuselage opening camera port Really drag chute should used afterthewheels ground authorwith fourycars experience ableto bendthe rules bitto tryfora very short landing Angle chute cable shows making rapid descent chute attached 1/4-in elastic cord prevent chute-shock damage bulkhead anchor Spectacular picture John Preston wing flap elevator because doesnt stretch fibers glue well wood next improvement will find trans parent monofilament string will also glue well connection between control surfaces will invisible have wondered long takes come up simple construction article like profile answer six months Think about someone complains takes week build plane Finally warning about flying near electric power lines should heeded Remem ber under some conditions power lines can pose threat model being near actual contact Never fly near power lines Snapshot Twin/Hux Continued page 82 Sight down two balsa strips align wing tips regardless center section aligns Set center waxed paper epoxy sets check alignment often Fill variations center section epoxy use cloth top wingonly bottom may raise dihedral angle -in per tip wish Install wood aileron servo tray attach LE bulkhead orwing dowels until later Install complete aileron linkages boom area Fuselage Check wing saddle side template see adjustments necessary Cut sides bulkheads specified stock Note center bulkhead -in hard birch plywood could cut thicker stock Epoxy hardwood longerons fuselage sides Assemble sides first two bulkheads rear bulkhead attached last Note caps fuselage does fit between fuselage sides Sheet bottom Install hardwood wing hold-down blocks Fill corners assortment tri angular stock Assemble balsa blocks sheets nose section cockpit hatch Cut top side profiles band saw Note front edge hatch must angled hatch can raised pulled forward rear plywood bulkhead fitted wing dowels Tack-glue nose hatch place shaping Cut sand until looks way want used belt sander Dont worry about sanding hole through blocks hole appears install another balsa block inside fill careful much sand -in sides bottom Too much sanding will leave triangular stock holding nose gear bulk head content shape remove blocks rout out inside about /2-in thickness cargo tube use cardboard tube roll Christmas wrappingpaperorthe like Line inside tube contact paper glue tube place Install doors release device no cargo tube used move radio gear under wings cap rear bulkhead balsa sand shape decide fuselage-mounted main landing gear strongest mount plywood plate side doublers bottom fuselage Drill andtapfortwo-20 nylon bolts hold aluminum landing gear Flatten center leading edge wing match width center bulkhead Tempo rarily set wing saddle foam place Set wing place fuselage W-l bulkhead place matched center fuselage bulkhead Clamp weight wing position Double check see wing saddle match shim cut differences Put epoxy between W- bulkhead wing leading edge Mark dowel positions fuselage center bulkhead drill through bulkheads wing up box spar tab drill holes hold-down bolts rear wing Use drill matches threads hold-bown bolts Remove wing Tap -20 holes wing hold-down nylon bolts Drill out holes wing bolts fit through coat lightly epoxy Install -in dowels wing leading edge Place cockpit hatch place drill -in holes match center bulkhead HEAD LOCK NEW STANDARIX K , FOR GLOW PLUG CONNECTORS us PAT 4fl452CHECK THESE FEATURES LPush twist its locked en $ 3752 Push twist its off 3Wjli favorite come off under heavy hobby dealer engine vibration 4Wilt Hoor US slort out S Positive spring contact 6 30 inch lead wire MODEL PRODUCTS CORP BOX 314 PomptonPlainsNJ07444 August1982 153 SCALE DOCUMj I~IL1N SCALE DRAWINGSPHOTOS BOOKLETS FULL COLOR EXACT REPRODUCTION MEflENI P40 CARD KIT 4./i4 ONLYWELL THEY FLEWMOnEL PLANS NOW $500 REMEMBER HOW1982 AIRPLANE CATALOGS $200 5pc11 0440InoId.000fl 40 0eIVing 4 1 511 Pd. SAnd TO/ REPLA-TECH 5 41 ModI.PO Boo 62 MSINTERNATIONAL R0.III MI 46006 48S00 MC KENZIE HWY UNIQUE NOSTALGIC G11TVIDA OREGON 97426 ATTENTION ERS EPOXY GLASS COWLS FOR NOSEN PICA Sit MORGAN BALSA USA PLAIT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS ft SCALE SUPER CUB FOKEER 0-7 BOEING P- 12 P-26 F4B2 F4B4 SPARROW HAWK GEE BEE MOO r MACBR/ENS TURBULENT CHRISTEN EAGLE BRISIGHEL LAS STAROUSTER II A SCALE JS-BI BABY FLYBABY AIRCAMPER PILOT JUNGMANN 135 SCALE 1/4 SCALE BECATIIALON PIPER PA-lB 8 OTHERS WHEEL PANTS FOR C/TA BR/A STAROUS TER /1 P/US SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK STEARMAN STINSONSRB MULLIGAN & OTHERS BRAZED ft HEATTREATEDWIREGEAJ1S&CABANES LARGE SCALE PLANS AVAILABLE Send SASE latest list supply Modelers wish fiberglass parts plansWrite call us T 8 D FIBERGLASS SPECIALTIES 30525 BLOCK GARDEN CITY MI 48135 PHONE 313 421-6358 NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested RIG its standard reference book Reference Book Will Ever Need Available through local hobby shop use coupon Yes send copy new RADIO CONTROL BUYERS GUIDE Please check Li Enclosed $950 $795 plus $1 55 postage US & canada dians send US funds VA residents add 4% sales tax [I] charge Li Mastercharge Li visa charge No_______________________ Exp Date ________________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 L THE PEANUT-PEOPLE PRESENT KANE SCALE MODELS MUSTANG SPORT MODELS PRAIRIE BIRD* KIT $596 BABY ACE$549 ONE NITE 28$696 ONE NITE 16$596 STRINGLESSWONDER$496 PECK ROG$196 RUBBER OR CO-2 POWERED BUIWING NEEDS PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS sad MORE ADVENTlIRE mons BLIMP il-FT R/C AIRSHIP KIT $24900 MILES M-18ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa Tissue Kits $595 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS PecksPelvmer$ PO BOX 2496-MA LA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 2 Put wing place test dowels fit bulkhead alignment Fill gap wing leading edge balsa scrap sand match top fuselage Install hold-down bolt front hatch Booms rudders Choose between penn anently-mounted booms detachable ones locate correct bulkheads construction detail choose between detachable stab one-piece boom stab assembly onepiece removable boom assembly easiest use removable choices protect stab/rudder joints damage booms should have 28-in-span bar bolted between prevent booms being forced out align ment being transported Test side tem plates against wing drawings note plan horizontal stabilizer shows detachable method left side cross linkage between rudders ending between two rudders necessary choose re move stab However permanentlymounted stab shown right side has rudder cross linkage outside rudders easier installation adjustment sure use same inside outside system both rudders will end up dive brake instead rudder controL Cut pieces booms rudders Assemble rudder pieces first Frame up booms upside down over plans since tops booms fiat Turn booms over install fins Hold booms squarely fiat surface test fins vertical alignment Cap tops booms t cut outline enclose bottoms until later Weight booms down fiat surface check see parallel squarely aligned Test fit wing make necessary adjustments boom saddles until wing fits correctly Epoxy wing place removable booms epoxy bulkhead hardwood pieces remain wing Cut nose blocks general shape epoxy place sand final shape Install elevator rudder servo rails servos Route pushrod through bulkheads Note elevator uses simple direct pushrod system requires offset control horn adjust different angle approach Frame area around servo servo hatch Cut hatch 1/16 plywood hinge screw place Sheet bottoms booms Sand shape overalL Stabilizer Check exact distance between fins cut stab pieces length Sig airfoil-shaped balsa stock Rout insides lighten cut rudder cross-tie channel Glue two halves together Epoxy stab top fins checking angle carefully Mark outline stab outside fins locate drill rudder cross-tie channel Drill three holes -in dowel strengthen joint Sand dowels flush surface install rudder cable channel until after model covered Nacelles rm sure can last since did some three years later Check spacing motor mounts against englnes adjust needed Slot sheeting foam around spars nacelle bulkheads Cut required pieces noting sides made Lite Ply use balsa templates sides should tested fit wing Fit bulkheads wing slots hold sides place wing 154 Model Aviation ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership 51 Ace RC Inc 37 Aeroilte Products mc 142 Aerotrend Products 129 Air Design 145 Airtronics nside Front Cover 15 119 Americas Hobby Center inc 27 Andrews Aircraft Model Co 147 BK Products133 Bantam Precision Products118 Richard G Barron149 Bavarian Precision Products50 Boynton & Associates154 Dave Brown Products124 Byron Originais1 California Modei imports26 Cannon RCSystems150 Carolina-Taffinder129 Chicago Expo152 Circus Hobbies mc136-141 George Ciapp152 Clark industries125 Coiumbia Modei Crafts153 Consumer Hobby Corp126-127 Contempo Enterprises151 Coverite146 Cox Hobbies21 118 Jim Crocket Repiicas148 DGM industries 150 Du-Bro Products 20 Dynathrust Props inc 144 Eastcraft Specialty Products 150 Eds Modei Products 128 Eiectrlc Eagle 43 Addis Eimore 148 FAI Model Supply 152 FHS Supply Inc4 Master113 134 Flightilne ShirtsSO Flyline Models119 Fourmost Products142 Fox Mfg Co Full Command Systems Futaba industries Gator RC Products Gibbs Hobby & Research Gorham Model Products Great Lakes Model & Mold Co Great Planes Model Mfg Co Grish Brothers Hardware Systems Historic Aviation Hobby Barn Hobby Capitol RC Hobby Horn Hobby Lobby international Hobby Radio Shop Hobby Shack Homer Sales Inc Ikon Northwest Co Indian City RC Club indy RC Sales Inc J-5 Enterprises K & B Mfg Co K & H Glass Products K & S Engineering Kraft Systems Inc Kress Technology Kustom Kraftsmanship Left Bank RC Distributors Litco Systems Lodge Electronics Lone Star Models MACS Products Majestic Models McDaniel RC Service Jim Messers Quality Products Midwest Products Millcott Corp Miniature Aircraft Supply Inc Model Engineering Norwalk irnania Model Merchant Model Products Corp 144 155 133 - 143 26 14 145 134 --5 114-115 10 129 6-10 155 145 45 151 - 128 130131 - - 132 - 19 - 123 - - 124 - 41 - - 146 - 152 - 122 - 25 - 149 135 - 135 - 26 135 - 155 - 149 29 135 147 119 Model Rectifier Corp Mutchiers Hobbies Jerry Nelson & Co Nor-Cal Avionics Northeast Engineering Peck-Polymers Pica Products Plaza Hobbycraft Prop Shop RAC Products RAM Radio Control Models RF Enterprises RJL industries RLF Products Radio South Repia-Tech international Roush Mfg Co Saf-Flite Models Sailplane Factory Satellite City Sheldons Hobby Shop Sig Mfg Co Bob Smith RC 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Technopower II Inc. Tower Hobbles Inc Twinn-K Inc Vogel Aviation WE Technical Services Waterlines Inc Williams Brothers Windsor Propeller Co World Engines CA Zaic Co Zenith Aviation Books inside Back Cover 120-121 150 152 133 154 2 118 116 150 134 45 151 116 123 153 125 153 124 148 43 13 152 146 148 113 146 153 4 144 117 122 129 151 150 122 132 Back dover 123 11 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX Mark positions bulkheads side pieces Remove wing assemble na celles epoxy Cut hole servo cable box spar Epoxy nacelles wing Cut general shape balsa blocks top rear nacelles epoxy place Tack-glue bottom sheet place shape entire nacelle Remove bottom sheet cut out hatch area Epoxy front bottom portion place optional nacelle-mounted landing gear used cut plywood mounting plate epoxy place hatch will have made two pieces broken around L G shaft Strap handmade L G wire plywood use made stock L G shown plans Hinge bolt hatchs place access hatches very small access servo Fuel-proofthe engine compartment install engine tank servo Route pushrod along bottom after installing tank main nacelle LG installed can now install shortened nose gear Adjust nose gear model level slightly nose down nacelle main gear will require shortest nose gear Radio installation Attach extension cables wing-mounted servos Any connectors will inside box spar should taped together removable boom installations connectors must stay booms can discon nected longer extension will required Pull cables through box spar snaking small stiff wire center end box spar Tape connector wire pull cable through gently booms first engines Mark connectors easy field assembly too cables easily remember correct order Miscellaneous good idea coat model Balsarite aid covering models compound curves Mine covered entirely white Permagloss Coverite leading edges flying surfaces trimmed black Contact brand shelf covering Install control surfaces plenty wire pivot hinges Too few hinges wrong type will survive fast model like Complete rudder cross-tie locating channel stab through covering Install small flexible tubing cable through channel Epoxy piece annealed flexible brass tubing end stab Place rounded object against fin bend tubing until aimed rudder control horn Finish cables threaded ends devises antenna can installed inside wing during construction antenna detachable Otherwise route antenna out booms tail Keep antenna away box spar Remember servo cables inside Complete engine test adjustments before going field possible Take precautions against problems arising twin-engine vibration example apply dab silicon glue over servo arm screws use AT LAST! l\CINE VERI AUL PIECE OF CAKE IXPANOING RING SLIDE rAPPER SLEEVE PULLER OR CI IL E\CINE%795 BEARING PULLER F FM FE\RINS695 Special Order Boih For1395 Seed check MD Ficciode 500 fo UPS Co GATOR R/C PRODUCTS POMPANCC ICR C lILA IC 11504 4 46August1982 155 PO Box 607 So Gallatin Road Madison_TN 37115 868-6911 Sales ice Complete line ROYAL Electronics RIC equipment WARRANTY repairs thing sell Call Ed Venus B ran nan Repair Service HOBBY LOBBY EK LOGICTROL F UTA BA HOBBY SHACK ROYAL rM icro seiectt Walnut Basswoi Mahagc Spruce Dolihous Chrvs Airpl L No 375 Snapshot Twin$1100 RC Workhorse utility sport flier twin 35-40 engines 4-5 channel Foam wings lift up 12 lb Two sheets No 376 Auroroa$350 RC Sport/aerobatic flier 049-1 0 power uses 2-ch rudder/elevator 3-ch elevator/aileron/throttle No 377 Wingmaster$200 CL AA sport-stunter Profile fuselage sheet wing w/flaps No 131Gee Bee Model Y 40-powered RC stand-off scale great old-rime racers$500 No 169Simitar RCA spectacular flying wing 15 nose- moanted tractor$300 No 225Ole Reliable RC 70 version 38 old-timer REM controls 15-$425 No 239Sloe Birds RC Ken Willards formation plane 4-ch. 10$375 No 253Mitchell 5-25 RC 4-ft /aA twin Ace foam pannls WeII-behannd$350 No 259Chambermaid FF Bill Hesss soperlatise rsbbnr-powred scale winner.........$200 No 260Waco Custom CabinRC Don Srslis scalnr 1 5-20 REM controls$400 No 262Crashmaster CL Crash-proof trainer 2 siznst 5-30 35-40$125 No 291Cap 20 40-pownred scaln RC Frnnch aerobatic plane Low wing tail dragger 2 sheets No 295Geeflee Sr Sportster RC -scale Haffke 91 power Prototype spas 30 ft 214 sheets$11 75 No 302Mini F-iS RC Sarpolas 049 docted fan sport flier 2-oh Balsa wings tail fese stractare$275 No 307Pegasus RC Watsons giant soper sailplane featores flaps spoilers T-tail 166 wingspan$675 No 3101930 Fleet Biplane RC Sport Scale 35-40 4-ch Wingspan 56 1/6 scale Two sheets$625 No 314Drake II RC Ken Willards flying host 3-oh. 15-power Fly land removable gear$375 No 317Schweizer T63-A RC Sport Scale Sailplane Jack Hiner nan 11-ft span 3-oh Two sheets$1200 No 323Super voodoo CL Fast Combat John J0 featores built-op wing fast constraction wins1 $300 No 325Commodore RC Tesaco-class Old-Timer Onlan updates Shereshaws classic 3-oh for29-power 2sh $1000 No 326Taylor Cob RC Don Srslis Schoolyard-Scale 049s 2-3 oh Speos SO in$350 No 326BriseolScoutD RClltznchs Precision-Scale-sizespan73 bipefor91 power4 sheets$1650 No 332Zephyr RC Small 2-oh glider hand- laanch tow thermal slope soaring$200 No 335Sopwith Dolphin FF Bill Noonans Jsmbo-Rabber scale great WW I-vintage biplane$175 No 337Super Akin-i Chips RC Scale-like stunter S-ch 1 smoke salve 40-power 2 sheets$700 No 339Rearwio Jr RC Dos Mathews Sport Scale 4-ch 40-power Monoplane$525 No 340Mossie Stunter CL Twin 35-powered semi-scale based famous WW II Mosqaito bomber$400 No 341Brown 6-2 RC Scale-like sport flier 4-oh 19-29-power Race Qoickee hot 25$500 No 343Wasp vI FF Mike Stops Nats-winning Outdoor HLO$100 No 345La Jolita CL /oA Scale Racer Class also sport Moose$100 No 347Space Shuttle RC Sport-Scale glider 2-oh lasoch mother plane$1 75 No 349Onestep RC Trainer has very forgiving flying qualities 3-oh. 1 0-25 power$425 No 350Electric Spitfire RC Fun-Scale 15/25 electric 20-30 glow 3-oh spans 6 ft$750 No 353Sanitation CL Sleek 46-powered super- Saunter contest-proven$400 No 354Merlyn RC Giant 155-in span Sailplane uses 3 RC channels$750 No 355Santos-Damontl4-bis RCSpsrt-Scalecanardbipefor15-power3-Oh spansS6 2 sheets$575 No 356Maule Lunar Rocket RC -Scale spans 925 5-ch flays 12 55 iv engine$1200 No 359Pieces FF Indoor Easy B Robber-power contest-winner W Van Gorder$1 00 No 359Blank Widow RC Fun-Scaly twin two tOn 4-oh RC spans 59 WW II night fighter$675 No 360Dragon CL Slow Combat winner has foam wing uses 36-power$500 No 361Electric Country Boy FF Record-holding duration craft far 02 motor$200 No 362Supercat RC Half-A Pylon Racer/sport flier Aileron elevator control Foam wing$200 No 363Tiger Rag CL Sport Stanter biplane 36-power$400 No 364NeutronStar RCSeek 40-size Patternflierwithtail draggerretracts enclosedpipe bout-up $525 No 365Seamaster RC Wrllards40-size flying boatfor4-ch Strap-on gearmakes ira landplannl 2 sheets$1100 No 366Truant PP Pert all-balsa beginners sport model 020-gamer$2 25 No 367P-39 Airacobra CL Sport-Scale uses water-cooled 45 engine mounted aft ostensive shaft$12 75 No 369Space Shuttle II RC Larger improved version Has glider 3-oh$550 No 369Super Star CL Semi-scale Stunter 35-power Easy boild has contest-proven capability$550 No 370CAP-21 RCOrantScaleof French aerobatic craftspans7ft Osadra power 2 sheetsdoc 0 No 371Strato-Streak RC Old-Timer version Garawis famoas 41 FF design power 2-ch$500 No 372Neigheion RC Low-wing tn-gear sportoter power 4-sb$500 No 373Cassutt II CL Profile Stanter 35 power Flaps$4 75 No 374Marissa FF Rubber-powered sportster Golden Age tradition$300 eeseeo..eeeeeeeeeeeeOOOO Circle numberlsj planss wish order 131168225239 285291299302 328332335337 253259260262 307310314317 338340341343 lock washers other bolt applications Flying What forthe first flight Enjoy nothing special know about flying twin unless engine goes out lose engine quickly cut throttle about half counter roll required amount rudder Keep nose level slightly down slowly feed throttle enough power get approach window cut throttle rudder offset make typical gliding approach Im trying oversimplify engine-out problem will keep simple rule mind will usually complete flight ease Dont try climb out engine Keep air speed nose level slightly down fly large diameter turns avoid sharp control move ments should get home very nicely Due unusually close nacelle position have advantage over Scale-type twins recommend use little rudder making low-speed approach turns both engines running Have nice flight Chupps Engine/Walker Continued page 83 distributor Apparently spark plugs threads also made because original insulators made Corning Glass Works replaced Mosler insulators carburetor used Little Bitty engine miniature Zenith carburetor use complete float weights valve stem hope Mr Chupps Zenith minia ture carburetor functioned better came VW Dasher calibrate carburetor Chupp study height gasoline bowl under various conditions glass tube rubber hose connection employed make tem porary sight gauge enabled him determine correct height orifice engine weighed 45 ounces Since no dynamometer available possible determine engines power theoretical ngine did turn 20in propeller 11-in pitch 2000 rpm gave static thrust seven pounds measured spring scale bench test 5-in flywheel produced 3000 rpm possibly because tach ometer used would measure 3000 rpm After approximately 15 minutes test stopped because cylinders showed signs overheating started turn light blue final comment concerned engine should used model airplanes Because extended manifold recommended 3such delicate precision equipment used 323 25326a pusher design would well protected 345347348during landings Engines type cannot hurled against obstructions damage article closed following still great unexplored possibilities field mechanically-driven aircraft hope experimenters will found active highly specialized art Chupp Little Bitty splendid example such effort lets have about using radio control Italics added 0000 0 0 0 269 278 282 350 353 354 355 356 358 359 360 361362 363 364365366 367 375 376 377 0 Please print carefully 368 369 370 371 Enclosed $ NAME STREET ______ CITY - STATE _________________________________________ ZIP __________ Price includes first-class postago Send Chock money order payable Mode/Aviation AMA 815 Fifteenth St NW. Wgahington DC 20005 372373374 0 0 0 0 0 -- 0 1 56 Model Aviation 0 0 S 0 0 0 S 0 Pull-size Plan List Available complete listing plans previously published magazine through No 364 may obtained free charge writing enclose stamped pre-addressed business size envelope Model Aviation 815 Fif teenth St NAN washington DC 20005