Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders
Edition: Model Aviation - 1992/06
Page Numbers: 20, 21, 124, 128, 130, 132, 133, 134
Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders
Edition: Model Aviation - 1992/06
Page Numbers: 20, 21, 124, 128, 130, 132, 133, 134
Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders
Edition: Model Aviation - 1992/06
Page Numbers: 20, 21, 124, 128, 130, 132, 133, 134
Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders
Edition: Model Aviation - 1992/06
Page Numbers: 20, 21, 124, 128, 130, 132, 133, 134
Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders
Edition: Model Aviation - 1992/06
Page Numbers: 20, 21, 124, 128, 130, 132, 133, 134
Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders
Edition: Model Aviation - 1992/06
Page Numbers: 20, 21, 124, 128, 130, 132, 133, 134
Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders
Edition: Model Aviation - 1992/06
Page Numbers: 20, 21, 124, 128, 130, 132, 133, 134
Dr DB Mathews Flying Fun 909 N Maize Rd Townhouse 734 WIchita KS 67212 k . Dave Unruh above left Kenal Alaska Dennyplane powered Enya 25 two-cycle Goldberg floats cross braces Astonishingly beautiful background Photos Pat Dye Below left Olympic 650 glider homemade floats Taken altitude Fox 60-powered Stik released float about before landing water LOW Robert Thibodeau II took photo Fly Baby 150% right uses 25 two-stroke Ace 30 floats Originally designed ROW FF Pete Bowers Model photo Jack Culpepper EXITING THE TUNNEL Ive read somewhere James Michener Scandinavians refer autumn entering tunnel spring exiting tunnel Considering far northern latitudes sun neither rises winter months nor sets 5 20 Model Aviation 1 ~1 c73IDVzi~Custom Balsa Die_Cutting2 Balsa Sheets745/16X 1-4880104 l/8X 12x24613 753/8x 11/25194105 3/16x 12x24363 3648381/8x 1/4131876 1/2x 279 1051061/4x 12x24420 1 1/16x2 28 40 39 1/8x3/814 1976B107 3/32x12x481004 2 1/16x3 32 44 40 1/8x 1/217 24108 1/8x12x481149 3 1/16x453 71 41 3/16x3/1613 19 4 776C Balsa Blocks109 3/16X12X48726 3/32x23550423/16x3/817216 12110 1/4x12x48838 5 3/32x339 53 43 3/16x1/222 3177 1-/rx262 112 1108 6 3/32x467 92 44 1/4x1/418 27 71/8 x 23854451/4 x 3/81930782 x 274130110C EII 792 x 390149 uce Sticks 81/8 x 35069461/4 x 1/22034LPL5 1EVVLJIJEJ380 x 11922536 48 91/8x477104471/4x3/43445813x4160299111 1/8x 1/817 23 103/16 x 24462481/4 x 14360 ustom Cut Balsa 113/16 x 35879495/16 x 5/162432 Quality Prices 8181121/8 x 1/42128 81C1131/8x3/82333 123/16 x 491121503/8 x 3/827 42AAA Quality Ecuadorian Balsa1143/16 x 3/162939 131/4 x 25172513/8 x 1/23153 Sanded Close Tolerances Balsa Planks361151/4 x 1/43652 141/4 x 37093523/8 x 3/44863 1285 N Union Street82lx 21571161/4 x 3/84158 151/4 x 4110134533/8 x 16573 Stockton CA 95205831 x32191171/4 x 1/24766 165/16 x 26082541/2 x 1/241 55841 x42931181/4 x 16789 175/16x382110551/2x3/453711 -209-464-0180852x22311195/16x5/164362 185/16 x 4139185561/2 x 16487862x33351205/16 x 1/24875 193/8x26895575/8x5/85472 E C L872x44751215/16x3/46789 203/8 x 390128583/3 x 3/47598883x 35151223/8 x 3/85264 213/8 x 4165230593/4 X 184111 ace Lite Ply893 1233/8 x 1/26381 221/2 x 283116601 x 1104139 Low Cost Door Skin 8981241/2 x 1/26992 231/2 x 3 109 155 608torBulkheads&FuselageSides 89C1251/2 x 3/477101 241/2 X 4 230 268 60ClI8x 6 X 48 125 y Light 125B 24B1/8x12x48 225901/8x6x24 115 125C 24CBalsaTapered911/8x 12x24173 BassSticks Aileron StockBus Hours 800-500 PST M-F92 1/8x24x2434536 48 Balsa Sticks 3648We accept VISA MasterCard931/8x 6x 481731263/16 x 3/162837 3648611/4 4363 Personal Checks & COD941/8x 12x483451273/16 x 1/42430 261/16x 1/160611611/4 x 1-5070Shipping Handling $500951/4x6x242011283/16 x 3/83138 271/16 x 1/80914621/4 x 11/25782 OD add $450961/4x 12x242591293/16 x 1/23746 631/4 0 imum Order $2500971/4 x 6 x 482591303/16 x 3/44860 281/16 x 3/161016 ifornia Residents98x 12 x 485181311/4 x 1/43442 291/16x 1/41018645/16x 15984 301/16 x 3/81120655/16 x 26794 6/% Sales Tas 9881321/4 x 3/83949 311/16 x 1/214 24 66 3/8 x 1 /2659298C133 1/4 x 3/46480 134 3/8x3/84860 323/32 x 3/320711673/8 x 274105 lsa Ply Birch1353/8 x 1/25670 333/32x 1/80914683/8x2/284122 TrailingEdge993/32x6x122531363/8x3/47290 343/32 x 1/41318691/2 x 1/28011536481001/8x6x 123111371/2 x 1/27290 353/32 x 3/81419701/2 x 290125711/8 x 1/218311013/16 x 6 x 122191381/2 x 3/496120 363/32 x 1/2 17 24 708723/16 x 3/429501021/4 x 6x 12 242 1388 371/8 x 1/8 09 13 70C731/4 X 136611033/32x 12x24 503 138C 1ZIi7IILzContact Us Kitting NeedsC summer description seems appropriate doesnt Well golly spite gloomiest predictions exiting tunnel its flying time again Actually winter has second mildest areas history havent bad ride through tunnel hope part world enjoyed similar ride ON THE WATER FRONT Spring season young mens thoughts turn float flying What else Continued page 124 Ron Bush Balsa USA crew prepare lI3scale Piper J-3 Cub takeoff 1991 Ace Float Fly Higginsville MO Power Kavan four-cycle twin time year invariably get revved up over up-coming Ace Float Fly Higginsville MO Its held first weekend June Admittedly rave about activity year justifiably event wonderfully multifaceted enjoyable has become something tradition us As Ive mentioned before Float Fly great fun everyone fliers spectators alike Id suspect other areas country have similar activities bit much fun least Id certainly hope WHY ROW Rise Off Water Considering local state national parks have lakes ponds rivers creeks pronounced crik part world other forms water set aside recreational use suitable sites models flying off water plentiful As always behooves modelers considerate others sharing facility local lake part countyoperated multi-use park also includes grass runway frequency board etc wheeled RC flying have gentlemens agreement will fly during hours campers would sleeping never mix model aircraft pleasure boats try keep engines well muffled try really hard stay out fishermans territories So far because efforts park management very friendly toward us might wonder control frequencies multi-use setup like After flying off water just down road ground fliers Weve evolved system note placed frequency board advising water flying frequency someone needs share number us work out half-hour window system example may use number 1200 1230 get 1230 100 Works just fine except ground fliers usually end up watching us rather flying Weve wheels-flier complain three years Flying floats presents challenge piloting skills including learning some new ones also presents new learning experiences construction engineering As mentioned June 1991 column really think some magazine writers have made requirements sound difficult frighten some potential float fliers off Again limited experience indicates float design terribly critical need keep model sinking Well quite aligned run parallel datum line wing Continued page 128 3% 620 CRANDALL-LINDIANA 47112 ** iLISTED BELOW ness since 1973 PRICES SUBJECT TO CHANGE WITHOUT NOTICE IS JUST FEW OF THE MFG WE STOCK HOURS MONDAYTHRUTHURSDAY9AM 5PM FRIDAY 9AM-2PM CLOSED SATUR DAY& A-JUSTO JIG AMBROID ARCO RUBBERBANDS BRIDI DAVEYS SYSTEMS COVERITE DEVCON DREMEL DU-BRO DYNAFI LITE FOX FUTABA GOLDBERG GAS MODEL PROD HALLCO HOBBYPOXY HOT STUFF K & B MPG SI G SA ITO 4 5 STAFFORD AIRCOUPE $9995 SONIC-TRONiCS STERLING SULLIVAN TOP FLITE VS ENGINESMCUU LANiER MILLER NORTHEAST ZINGER PROPS complete listing etcplease send stamped self-address enve lope DEALERS WANTED 124 Model Aviation Flying Fun/Mathews Continued page 21 Limited Quantity STAFFORD SCALE B-24$300OC ENGINES 4 19-25 WINGSPAN 90 inches F K KITS IGlutCALL FOR SPECIALS OF arf/fibeigJassl oxI fuseLage1 $5995ITHE MONTH Flying FunlMathews Continued page 124 airfoil track straight through water no toe-in toe-out rigid enough flex up down side side itll work FLOAT DESIGN Admittedly some floats feature complex curvatures would challenge hull designers Americas Cup yachts yet personally dont find need complexity first adventure RC offwater flying floats developed Dr Paul Schlegel Gunnison Colorado cuts out foam flat-bottomed also neither tapered top view nor rounded anywhere Still work just fine type float design similar ones Chuck Cunnigham has written about times column RCM Paul covers Econokote rather packaging tape Chuck uses both designs akin garbage scows yachts Taint fer looks As float flying has increased popularity more commercially produced floats have come market can built-up structures like Sig Goldberg units vacuformed ABS units like Ace combination units like Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES10241 Ridgewood El Paso Texas 79925 Balsa USA floats molded polypropylene foam covered glass cloth John Sullivan others FLOAT ALIGNMENT distinct advantage comes admitting knows very little about subject discussing immunity criticism engenders note Ill try little different tack subject setting up floats tend sometimes confuse new float fliers talking about positive/negative angle wing stuff lets try clarify floats need nearly parallel wing airfoil lets consider nose gear trike-geared wheeled model set up youve ever tried get trike-geared model take off too-long nose gear can see floats shouldnt run down hill relative wing No matter much up elevator applied wing setup will never get airflow low enough angle attack generate lift Its semistalled alignment time model will just run off distance ever rising air other hand nose gear too short huge amount up must fed raise wing leading edge airflow far enough create lift course will Continued page 130 SCALE PILOTS Cv busts n and / scaje tiiua plus ti3 PH Full fgu es e $1995 plus $4 P/HCivilians 1/3 /4 /5 scale WWI Barnstormer 1/4 WWII Navy 75 WWII USAAF 1/6 /n scales Ask Officers Gentlemen pilots name favorite hobby shop call name dealer nearest ordering direct include check money order MCNISA account number exp date Officers UuntIuEnmn 908 537-7323 Box 537 RD 2 Hampton NJ 08827 128 Model Aviation 10 SPAN 30-33 LBS 50-75 L. POWER 5-10 LB PAYLOAD OPTIONAL SPREADER KIT $26995 SPDKIT$1995 FOAMAI RE 74 IN WING SPAN 6-7 LBS 45-60 POWER 4 CH PLY FOAM AND BALSA WOOD _______________________KIT_$6995_________________________ SEND $100 FOR CATALOGCART 1 NEODESHA KS 66757 OF SAC KITS AND ACC2VISA/M-2821 FREE SHIPPING ON KIT ORDERSscaASTERCARD 10 SPAN 19-22 L35-42CC POWER CHOOSE 3 OR 4 OH SLOW AND STABLE 3 CH $14995 4 CH $16495 4LATHES PRECI510N INSTRUMENTS ___MILL5 METAL5 60010 __COMPLETE CATALOO $200 IF OOs items CA MPBELL TOOLS CO 2122 MS1,Ro2 5p12,02j1O OH 45505 513 3220562 Rubber & Engine Power Free Flight Diepley Control Une Electric Power RIC Airplanes new illustrated 32 page tabloId size catalog US da $100 Foreigh $300 Penn Valley Hobby Center 637-A W Main St Lacadale PA 19446 215- 3U4770 3 7 HP PULSE JET ENGINES AVAILABLE BAtTERY MANAGEMENT System MOSFET nicad cycler $18995 MOSFET nicad cmler designed specifically planes boats helicopters 3 overnight/trickle outputs capable charging 1 9 cells infinitely adjustable RX overnight charge currenl ability discharge both fiX TX packs digital discharge timer 3 outputs allow simultaneous separate charging fiX TX AUXILIARY eg glow plug starter battery nicads riicads will charge overnight rate 17 hours 4 minutes before automatically switching trickle rate Adjustable control allows charging fiX pack up 2000 mAll capacity TX output can discharge 8 9 cell packs 300 mA RX output can discharge 4 5 cell packs 300 500 mA True Constant Current sources used charge/discharge modes power up BMS OIIE will always come up overnight charge mode ensuring fully charged batteries event momentary 110 volt power loss Utilizing Current Detection Circuitry LEDs can illuminate current aclually flowing out batteries Large digital display anti-glare filter shows fiX TX discharge times Unique CAPACITY CALCULATOR will allow milliampere-hour rating batteries determined RK ELECTRONICS ttNOVATIVE ELECTROnICS 304 rox Run Hudson New Itanupshfre 03051 882-6022 produce model tends stick surface like glue suddenly literally jump air same principle applies floats placement float step relative balance point model also best explained wheels involved float plane takes off running float portion step forward just bit Think area contact would footprint wheels broader Just wheeled model wheel axles step too far forward relative balance point model will take off fairly well jump skip badly landings Conversely axle step too far aft model will usually Pmid0derMotteyOdotoCertdeOCheCk S5vpieg 5 Hoodlotg $500 cOO Odero Cashot Cetited ChecO collected deloery Add $400 above amounts FACTORY DIRECT ONLY Prices Specifications aov Subject Charge Without Notice Designed manofactored USA oscillate wildly may ground-loop takeoff Obviously portion float contact water takeoff needs same relationship balance point wheels ahead balance point about under leading edge wing Obviously takeoff run must allow rear floats come out water model running step Just wheels model wont take off properly tail held down through takeoff run floats properly positioned relative wing balance point landings actually easier float plane wheels Now may cause stir own experience observation really believe Perhaps wider landing strip least lakes ponds allows us get absolutely head-on wind final maybe much longer floats provide lot places model touch down rate landing floater isnt nearly difficult taking off word caution however float landing approach needs higher speed needed wheels KS METAL AluminumlerasslCopper Tubing & Shapes Music Wire because additional drag weight floats Try flaring higher slow things down position model just off surface reducing power until sort slides onto water float setup will stall earlier-but jump over place landed too hot Just set up let plop dont try get wheel landing fully stalled POWER June 1991 column also stated something effect model requires full power get off grass runway youll never get off water still true Most 40-sized models will need 50 mild 60 floats rule thumb will need about 25% 35% power depending weight drag Generally smaller model floats will add weight drag percentages because additional landing gear basic float structure can reduced far Another consideration power department prop unavoidable water spray really tough wooden props causing splitting blade loss Ive seen lots successful float flights made wooden props conventional wisdom would dictate use molded fiberglass units reliable idle absolute must unless happen have boat use retrieval enjoy swimming making like tug boat try set idle stop additional 500 rpm want Continued page 132 130 Model Aviation R/C BEGINNERS hobby loses abouf half ifs potenfial fliers because fail successfully solo IT ISNT THEIR FAULT ITS THE PLANES FAULT jusf some fhe advertised trainers impossible average beginner solo seems norm crash ruin 4 5 planes before becoming successful both stupid costly mention real turn-off new student quite unnecessary YOU COULD SOLO YOUR FIRST TIME UP Thanks extensive trainer flighttesting ever conducted ibis hobby can now know advance ones fly slow handsoff stable easy enough Grandma just so-so intermediate ones deserve trainer label Send $350 plus 52 postage EASE-OF-FLYING RATINGS OF RIC TRAINERS Over 40 currently available train ers evaluated including ARFs Also grades ease of-building explains trainer aerodynamics dares address questions poor trainers good trainers marketed does no warn about Guarantee money back say eye-opening candid enlight ening time-saving money-saving frustrationsparing R/C publication have ever read Send chuck money order Jim Waterman 3818 Deerfield San Antonio TX 78218 r MASKING MAS TER JVTM * FINEST QUALITY MASKING TAPE KIT ON THE MARKET * LOW-TACK LEAKPROOF CONFORMAL PERFECTION * EACH KIT CONTAINS * ONE 36 YD ROLL OF VINYL MASK3/16 * ONE 72 YD ROLL OF POLY MASK114 * ONE 36 YD ROLL OF VINYL MASK1/4 * ONE 72 YD ROLL OF POLY MASK3/8 * FOR USE WITH LACQUERS NITRATE & BUTYRATE DOPES EPOXY POLY-U AND ENAMELS SATISFACTION GUARANTEED NH S & H INCLUD NJ RES ADD 7% SEND TOt TECHTAPE MASKING TECHNOLOGYIMITED ED PO BOX 230 LIVINGSTON NJ 07039 $1400 CHECK OR MO RIC City dM6 lull BIlL AJAIJmi Avanti Jekyll 120 Conquest VILA-i Conquest 120 Phoenix 8 CursorPhoenix 8/45 DesirePunch EU-lA _ Skybolt Eclipse Summit Ill Fresh Aire Sundowner Krier Kraft Worlds Finest Fiberglass Products Typhoon Jekyll 60 96 Railroad Ave #F Vortex Suisun Ca 94585 707-428-3119 FAX 707-421-2336 MASTERCARDNISA ACCEPTED CONQUEST VI Wing Span 66Weigfht 80-85 Lbs Wing Area 840Engine 60 TYPHOON Wing Span 73Weigfht 85-95 Lbs Wing Area 1000/900 Engine 120 SKYBOLT Wing Span T/77 B/66Weigfht 20-25 Lbs Wing Area 1625Engine QUADRA absolutely certain engine will run setting several minutes using bottom part fuel load dont use boat other recovery device local lake rather try set up shore has wind blowing toward us take off straight shore wind way engine flames out wind will eventually push model back neat RC man-carrying retrieval boats used ACE Float Fly just arent available ponds though can certainly appreciate Landings entered behind takeoff position approaching over shore wind Needless say safety considerations must observed protect others flying keep spectators sidenot directly behind WATER RUDDERS AND SUBFINS find nearly impossible keep float model headed wind takeoff using water rudder Additionally landings never good dont require some taxiing back launch site Water rudders can nothing complex section tin soldered onto lengthened tail-wheel wire can range simple setup complex servo-driven rudders back floats its done important its being done now regular readers aware am cut-and-try designer Im sure someone engineering background can show some formulas substantiate refute next statement have observed would seem float-equipped high-wing / f D&J ELECTRONICS 900 Lucy Road Howell Michigan 48843 517-546-2644 Service & Repairs Most Radio Control Systems Utilizing Calibrated Test Equipment & Spectrum Analyzer Endorsed AMA RCMA Sticker Station #105 Futaba Airtronics JR Ace HiTec Tower Cirrus World Engines & WE USE GENUINE FACTORY REPLACEMENT PARTS Complete 1991 Narrow Banding & Upgrades RCD / HITEC R/C DEALER Carry Full Line RCD RXs & Products Upgrading. ASK ABOUT THE NEW HOT FOCUS SERIES RADIO CONTROL SYSTEMS FCC Licensed Speed Control Repairs Quality Service Fast Turn Arouii Shipping & Insurance ExtraUPS ailCODs z6 VISA / MASTERCARD & DISCOVER WELCOMED AMA #256123ARRLWB8YSQ 132 Model Aviation models utilize flat-bottomed Clark Y-type airfoil usually need subfins added control yawparticularly slow flight speeds Conversely mid- low-winged symmetrical-sectioned models confuses bit since classic Charles Grant CLA theory would make conclude added weight surface floats well below center lift should make model stable An ancient free flight scale trick add weight wheels low-winged design improve yaw stability So subfins full sized Cubs should needed other side discussion series kits ACE R/C show no need additional fin area whatsoever true other manufacturers products similar configuration dont know just know fact TYPICAL SETUP order tie above observations something practical use thought Id include photo BINGO 40 prototype floats discuss bit JEKYLL Wing Span 66Weigfht 80-85 Lbs Wing Area 770Engine 60 DESIRE Wing Span 66Weigfht 85-90 Lbs Wing Area 920Engine 1 20 Electric F ight / Has Broke2 month Lightweight 12 00money hack Adjustable switching point SnIdeness tersainal easy hookup $29 ON/OFF Contra iier95 Power save weight 20 Sane 22x13a63 Very high efficiency OW loss Add $100 foe shipping Califonda eaidess odd 7255 $217 Ta Send Check money order iiHIgh Sky Fosaba coasoater 3929 Kansas St #9 othe e%s ore San DlegoCA 92104 PB- La Catalina Amphibious Flying Boat photo model high-speed taxi mode using bit up elevator keep water rudder immersed tail wheel bracket removable set up new section 1/16 wire 11/2 x 2-in piece tin has soldered Onto rightangle bend installed As shown photo water rudder should immersed model back portion step should pretty much clear water once model forward step portion model should take off running angle attack illustrated photo Ace 301l2in floats perfect particular design since right recommended 75% fuselage length also very light20 oz floats fabricated two sections molded ABS joined along midline special flanged sealer strips cyanoacrylate second aluminum gear has added behind wings trailing edge bolted /16 plywood plate epoxied inside fuselage bottom original main gear used up front Ace floats come relatively tall heavy-duty molded T-fittings axle attachment possible locate rear axle well up brackets front axle down low turn compensates shorter attachment plate location resulting taper fuselage bottom float tops set essentially parallel fuselage datum line particular design has wing set degree positive slight positive wing leading edge up relation between floats wing already built Originally did have cross braces kind between floats good Now two pieces aluminum window screen have channel-screwed glued onto bases T prevents flexing along axle holes locks things up very well 600 sqin wing power provided Fox 40 floats extra hardware model weighs 90 ounces Fox gives enough power Without Iloats hardware model flies very well K&B 28 additional observation No matter careful seal conceivable hole models exterior water finds its way blast electric hair drier inside models after flying session Water flying tough equipment behooves us keep things just dry can NEW ONE Ive used photos Dave Unruhs Dennyplane past columns something exceptionally beautiful about old-timer especially set scenery Kenai Alaska time Dave sent some beauties Denny flying off Lake Kenai last December air temperature 200F water 320 no wind Dave encountered something Id never heard model flying Spray takeoff run collected hinges froze solid De-icers models Dave 5 J 21 x 12 x 39 legs removable O Can traced cut & assembled evening O No sore backs knees U No measuring necessary jig saw drill & hammer tools required construction O Designed hold Fuel tank & pump trans starter battery fuse hold adj tools etc O Ideal remote control planes cars boats ror compiete Selecta-Products / PO Box 259/ PaJo Cedro CA 96073paneun plans Calif tax onlyl June 1992 133 45 1/2 Wing Span TH Scale PAUL K GUILLOW INC 229 WAKEFIELD MA retreated living room model after thawed out bit tried again time worked controls vigorously after takeoff order shake off spray before could freeze worked No touch-and-goes however Great fun LOW Robert Thibodeau Cheltenham Maryland has given us new term ULTRA RIC PRODUCIS INTRODUCES Record own voice pattern sequence set commands reminders Common dindle uatlythmughtheearplug provided playback remote playback button velcroed anywhere transmitter pushed Ultra Commander 100% 50101 state tape moving pants operates asingte9voit battery nut provided kiterni memo non-volatile can recorded over thousands ol times Ultra Commander measures approximately 204 inche weiglmonly5ounces hanabeltipockat dip unit comes complete following Internal microphonewith AGC Automatic Gem Control circuit veicroed remote playback button three-loot cable internal volume control earplug three-loot cable AJso availabl remote playback loot-pedal six-foot cable $1400 model doesnt take off water ROW lands shouldnt LOW lands water proper term power tug Balsa USA Super Stik 40 powered Fox 60 glider Olympic 650 uncovered foam floats attached wing saddles rubberbands As can seen photo servo used release glider tug second piloL guides glider tug landed point something really unusual happens glider set down water Id like see wouldnt Bob expresses willingness write up article mechanical flying aspects project Id certainly encourage him Looks like loads fun FLY BABY ON FLOATS mentioned August 1989 Fly Baby 50% construction article original smaller version used Pete Bowers set ROW Free Flight endurance record 1940 original drawings Model Airplane News included float design essentially balsa framework covered silk Jack Culpepper Tullahoma Tennessee wrote ask drawings original Bowers floats recommended substitute ACEs 30-in units did engine 05 25 covering Sig Koverall fuselage wing MonoKote says takeoff run 10 ft wheels 80 ft Iloats theres message Note rather marked positive angle attack wing relative floats original design subfin configuration isnt too hard understand eitherThe body water interesting Jack says its cooling pond large wind tunnel Arnold AFB SO DO IT ALREADY has generated some interest ROW flying dont put off technical jargon perceived difficulties Believe flying off water isnt tough its sure great way FLY FOR FUN Model Aviation IIJRAzT068894758 ~.wuEEuEuEEUEU 5455 LINGER LONGER ROAD ING GA 30130 fls compacf Ready fly easily Ills backseat ot car Offers solid big-plane pertormance Its small plane flies like 40 $4995 Accanft tnndrnd -1170 lAWfll11st See hohhy dealer first domt stock SNAPPER order direct Inlude 09 10 S&H direct orders