rs et4 cutor letters will carefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Di Reston VA 22090 FT Vagabond Enclosed find picture old Frei Flight Vagabond 6-ft-span mode used Ohlsson 60 power Its las flight took place 40 years ago calm clear warm day nose dived 2000 feet concrete sur made spectacular crash Up time 21 absolutely flaw less flights day still wonder wha could have caused crash Could some please enlighten Bill Spathiat 2727 Lawtherwood Ct Dallas TX 7521Z suspicion something shifted Pei haps rubberband gave out resulting changed balance point incidence settin Any other ideas 1991 beyond major con cern seems 1991 has develope demon will swoop down de stroy miniature airplanes warn ing facts say far trut use some commonsense guidelinet As modelers seem bombarde kinds gadgets will enhanc modeling capabilities Some goo needed others may frill such gadget beeping fre quency control pin board seen Ma 1990 issue Model Aviation avail able Custom Tronics Texas confused AMA sticke stations California Custom Electronics Ive flying RC since 1967 ing electronics technician have enjoye growth RC equipment Today mor Continued page 6 Model Aviation Frequency Control Satisfaction Guaranteedi EAv HINEEZZ SH-710 Pkg 24- $295 THE HIGH-TECH HINGE DESIGNED FOR THE CYANOACRYLATE AGE Easier install other hinge No gouging picking messy epoxies Simply cut single knife slot hinge slide hinges place apply few drops favorite CA glue youre done SUPER FAST SUPER EASY SUPER STRONG 74e e4t /1a9e4 e 6aa c SIG MFG CO INC.401-7 So Front St.Montezuma IA 50171 23-5154 SPORT/PATTERN FLYING FOR ENGINE OR MOTOR SIMPLE TO BUILD TO FLY DESIGNS Featuring extensive pre fabrication including pre cut fuse lage sides tail feathers accurately die machine cut parts HAMMER 20 Pocket size pattern ship 20-30 engines 25 size electric motors Wing span 50 400 sq area 31/24 lbs flying weight Symmet rical airfoil tapered wing generous side area superb perf mance Has unique simplicity design quick accurate con struction 28 KITS TO CHOOSE FROM IPAVEY675 TOWER LANE YSTEMSWEST CHESTER PA 19380 ORPORATION 215-430-8645 modelers flying RC ever before making acquisition 50 RC channels 20 kI-Iz spacing very much needed channels may work well given area now have RC channels choose last several years have learned some new terms like 31M 2IMD lIM lIM later Some interferenc beyond control Wha can club help prolong model life club can have frequency sur vey done flying site using scannei receiver will let club know what frequencies should avoided Second club can become radio wise Ra dio wise knowing what 31M 2IMD anc lIM isand what to minimize ef fects Lets review what phenomenon known 31M occurs two transmitters operating different frequency generate interfering signal third frequency right another RC channel An important factor much difference between control RF power transmitter 31M RF power must present before interferencc can affect receiver attendance major Pattern meet used ICOM-7000 receives observed 31M action Showing fellow modeler AMA President Don Lowe both amazed see 31M RC channel watch pilot turn transmitter channel pro ceed fly unaffected Hmm Receivers must work designed course some better others pilots ha no interference problems during wholi three-day meetand receivers usi dual-conversion narrow-band de signs However transmitters gob stickers indicating narrow-ban units secret pilot spacing Thi four pilot stations separated thereb reducing 31M-generated RF power enougl affect same-channel receivers case able reject inter fering signal obey controlling trans mitter system spacing pilot sta tions along assigned frequencies t station take care adjacent-channe interference solves problem Next lets deal 2IMD Second Order Intermodulation Distortion Man wideband receivers using single-conver sion superheterodyne design suscepti ble type interference interfer ence occurs two transmitters use op erate channels frequency sepa rated approximately receivers inter mediate frequency other words avoic simultaneous use RC channels 2 number apart instance using th AMAs Interim Alternate Plan 1 May Mod el Aviation page 122 along narrow band transmitters will solve Now last type interference lIM phenomenon occurs whes Continued page h 8 Model Aviation HAMMER 40 Big brother Hammer 20 attributes- plus larger size wing span 60 620 sq area 4-5 lbs flying weight 35-45 two-cycle 40-60 four-cycle engines 40 size motors Does pattern manuevers can still fly like docile trainer CESSNA 150 real pretty sport scale copy famous trainer 20-30 twocycle 30-40 four-cycle engines 25 size electric motors Wing span 50 410 sq area 3l/24 lbs flying weight semi-symmetrical airfoil optional flaps wide speed range realistic performance ones airplane seems flying very uncontrolled manner due controlling influence brain know Pilot er ror have experienced Pilot error just dumb thumbs giving up elevator making highspeed inverted low pass includes ques tions like Did fully charge batter ies Did check correct direc tion control movement Did check c etc Also included lIM guy turns transmitter frequency youre flying As RC equipment becomes reliable old lIM begins loom biggest problem above systems frequency control have tried proved times fly-ins contests currently being used home RC club Prop Nuts Highland TX have 31M 2IMD problems although occasion old lIM gets us club has questions fre quency problems contact AMA dis trict frequency coordinator names ad dresses VP column headings AMA News section Im member AMA Frequency Committee will glad help too further frequency con trol guidelines see May 1990 MA page 120 Larry Dungan Box 1254 Pasadena TX 77501 Continued page 12 10 Model Aviation Supe Pos& Pojiswk 40. FREE CATALOG jfl 04 687-1702 K&S METAL AJuminumlBrasslCopper Tubing & Shapes Music Wire sTools Soldering Irons Silk Silk Span Finishing Materials 4 catalog Pwudwet A63A WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY SALSA SHUTS 36 45 30 1633 332240 18 243 316249 14 256 132337 120337 1 1633749 31 33234458 37 18 35471 45 31636282 99 14 373 95 61 916385110 3S 388924 71 12 3110155 34 3169191 916459 7648 332470 9456 98 480106 66 31649312270 14 4110134 84 38 65225139 12 4225261 MATCHED SHEETS 42 3324100 84108 3164120 144131 SAL SAS11CKS 364 1161409 1 163810 1161214 3321410 3323812 3321216 191808 18.14II16 18381218 19121024 3163161116 316381720 316122230 14141624 14381926 14122130 14343444 14I4055 5165167128 38382737 3S123246 39344255 3815270 12123652 12344662 1215878 58584869 34346790 WHAT 00 CALL THE BEST SHEETINGTwerskins MATERIAL FOR FOAM WING CORES CHECK THESE FEATURESGyro, 0 yha fyllosong color Superyrsroglfl ll rOoWaco 04 0uyrr 505 CaybI,y Ey loamPolar 550, 001 pr sq n Ompryur,Oabyy0SSO9 01, Smofl h4fl gloss lflOSun IIow Supr,r ra,saooa O n5r0 luI Suporror rss,no 5c us,tOg Eay tO apply LOw low 0505 Cl /64 5,, Phone 3093423009 I//N6MF6t FAX 300-342-3014 OyOly50 Oraoo,aornonno,rooo,,5oon uausooynooloynoo uao uuuo,ooaonuo un,$4flpersheet SEND 9400 FOR CATALOGllnos 0,Onl 0440 1 /Oo sales 0a WING MIg 306 E Simmons Galesburg IL 61401 & & MODEL BUILDING 7SERVICE RADIO CONTPOL P1OOUCTS carry full Iinof Byron Originals Bdb Parkerson Tom Cook Bob Violet products COD Orders Accepted 718 983-9735 328 WATCHOGUE ROAD STATEN 11AM 0 NY 10314 w IALSA TRIANGLES 36 4425 383630 235 33445 55 BALSA PLANKS 36 90 257 329 4293 11/23302 11/24396 22231 23336 24476 33615 34715 TAPERED SHEETS36 14265 14385 36268 38398 123120 About Uncle SASS WOOD4 311631626 3/1611430 31163838 31611246 3163460 141442 143849 143480 3/83860 381270 383400 1211290 1234100 BUNDLE DEALS 30-116336688 201164361035 20332336860 15332436955 1618336735 1018436895 19316336920 10316 438839 10-14336655 1014438930 1039336870 538436600 512336540 INSTANT GLUE 5324361080 1 75ok 298 10332448885 ba TOrn 298 5184 48500 2, Thck 650 5316448600 2, 150 550 514448645 TRAILING EDGE 36 14132 51611439 3811246 12270 wrote poem about uncle best friend Perhaps some readers would enjoy Maybe some RC nuts too RC Nut always know whereabouts field no doubt flies plane day nothing ever keeps him away cold outside Warm clothes donned stride snow around Skis used get off ground plane does crash fixes up flash MonoKote iron instant glue makes look just like new works straight through night ready next flight Gloria Shaffer Duanesburg NY Bell-Anchor intriguing exquisite piece writing artistry Ive ever privi leged conned Bell-Anchor April 1990 issue Scratch Biltright commendeda super con artist Ole dummy sat down thought hed like build Bell-Anchor Whoa Continued page 192 SPRUCE TRIANGL ES 36 38 7 121284 34 34 5 PL VUIRCII 48 3132xt2700 1I8x12776 3I16x12626 114x12626 3/8x12726 112xt2900 GROOVED LG PII3UNTS lZIvacIme 3834/18/40 3834/532140 I234/316/45 AT LAST An Effective High Tech Engine Cleaner R/O Engines Just Brush & Carbons Gone-Guaranteed ONLY $695 CA residents add 725% tax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 Satisfaction Guaranteed Direct Only CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa HARD MAPLE 1 4 38 38 38 38 12 38 34 12 40 45 50 99 66 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 364 18 181725 SINCH DOWELS36 18 09 31611 1414 51625 3/832 18 18 18 3/8 316316 14 14 14 38 14 12 38 38 3812 12 2 3/4 LIGHT 4-6 LB WOOD36 1/22362 1/20362 1/18382 3/22374 1/8391 3/183105 1/43125 3/83158 1/23186 3/43300 13425 1/18498 3/324118 1/84135 3/164157 1/44189 3184285 1/24386 LONE STAR EPOXY81 BALSA HOT LINE9o LI895LITIPLY4 1/8x6176 Cull 806 745 6394 lOem6 pmCen8relTumeSn,598115x12360 30n,n599 114x6276 LONE STAR MODELS114x12560 Ccnt48 Handling Charge pay UPS Add $350 COD *400 exfra PP APO FPO 1623 57tl St Lubbock TX 79412Wan6jI M4jr pesonel checks orCOD6I%8axinTexaeUScurrencyonly Minimum Wood Order $1000 3026 2232 2838 3490 4055 4560 4969 6077 6688 7597 SPLYWIMCN48 t/64x12536 1132x12475 1116x12476 lIBxt2496 Matched Performance System TOP PERFORMANCE K&B ENGINES AkpksleManse K&B FUELS186 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE 186 FIBERGLASS CLOTH 180 Micro-Balloons TILLER 185 SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER 185 SUPER POXY PAINT K&B MIXING CUPS 12 Model Aviation DEALERS INQUIRES WELCOME Bill Etfinger * says OnlyPlane Pastern0 Seto give coo asserted designs voc want have selected best clasoic designs time coo choose patterns part important eacluelve feature Ducted Fans Navy F4D-1 Skyray ecZIIIIIIIeLsF 020 go 1 eoateOeIength 44h wingspan 41PtO oh 6/C eoribte Landing Gear soste ength 3-S oh CIC eK-20 2 One-Third Scale Piper Tn-Pacer PA-22 16-319 wing seen eq wing area 20 3g cid engines Por4-5 oh eic ao t2 lbs el-lie acerati coach ft 1/3 Scale Piper Cub J-3 110 wing span ength 2000sqlnwwgarss doheiC 20 ao old eegioee RC35 2$2905 Quarter Scale WW SE-SA go% span sq wing area 70 22 engines SCOS 7 5 Quarter Scale WWI Fokker D-VIINew SPAD CXIII 79Yewing span2125 sq wing area t3to 31 ettgines Copahie flyer-it captures imagination RCOS-0 0 00 wrvyupav sq inlog ama a90 2hcrd evolve SOchlt lbs FOKKER DR-i TRIPLANEo OCOS ht24 95 72 wing span sat intIIIL.a.Full cantilever wings no flying wired Removal enolno volt Shockwing area 70 tot 50 esgineuot-- mouvted landing gear Oaluaiplywood fuselage huilt-up hieso wing RCO54 $2405 N r bitt Effinger Poonding Member AMA OFFS Hall Famer SOPWITH CAMEL F1Prices Conipiete plans cub asservely ft darailed p0ev lists PLEASE ADD 44 wing span 2100 sq iv0205 tor sbppng Imalog tahel Sour 1990 PIne Sets b Ovhuic Proc wing area 11 lbs wia SIC ofundable cv t 5 Orde wood & balsa cansnuvnon overCTECHNICAL 05 sq ft drawingsWESERVICES lOCOS t t 5 Rt 1 Box2SOOA Santa Rosa Beach FL32459 r MO WNG know bl advancesix weeksOF ADDRESS LET US KNOW WHERE YOU ARE GOINGWhen move please let us appropriate box mail Chk quwed change address Attach current MA mailing label boxenclose payment E NEW SUBSCRIPTION IappropriafOflin 1810 Samuel Morse Dr Reston VA 22090 Non-AMA-member subscription rates $1800 12 months US addresses US Schools $900 Libraries $1350 elsewhere including Canada Mexico $2900 Payment must check money order US funds drawn US bank NameI AddressI City/State_______________ ZIP ____I Model Aviation 1810 Samuel Morse Dr Reston VA 22090I complete virtually identical models hang ing ceiling immediate interest classrooms dedicated photography playing musical instruments static dis play models various types dance host other subjects housed same building suppose centers could viewed great places drop chil dren off after work possibly some par ents utilize evening-care centers well think however enjoy ment places sure theres also undertone serious ness offer opportunity excel society places great emphasis its youth does succeed-ordo-something-else basis Most us have seenusually courtesy TV coverage international sporting eventhow So viet system selects very few promising youngsters among thousands thou sands intensive training say gymnas tics effort bit laid-back aeromodeling principle same Competition Soviet national contests must very intense indeed Russians perceive modeling dif ferent light us Americans view hobby Soviets view sport treat such shall soon see myself trip Leningrad such terrific fun Bob Carver wife Diana planning attend Cup Leningrad CL contest mid-May Carl Dodge FAL Speed Bob Whitley FAI Precision Aerobatics Tim Gillott/Jeff Hollfelder FAI Team Race hope join us As enticement US participation Soviets have added /2A Combat AMA Combat list scheduled events got could Carverwho sponsors annual Bladder Grabber largest US Fast Combat meetsand resist being among first fly Bad Boy Combat right Vladimir Le nins front yard Letters Editor Continued page 12 cant done says hesorry buster youve conned Nice job Ill remember next con published A G Ronay Hoffman Estates IL Ligeti Stratos Its easy understand Model Avia tion well liked took pretty good article made greatthanks no small part Bob Banka Scale Model Re search some great photos full-size Stratos Continued page 194 SAFE FLYING IS NO ACCIDENT PROMISE* Mew 42 wkie * * low Product *Full Satlstactlou Full RefundSame Lower Price 58 oz GLASS CLOTH FORM 10500Compare Prices Sport-- PLAIN CRADLE2 ide Mirror Wheels h...-i~ Same Low Price 2/e Hardened minume Treated Use Epoxy Polyester Includes 2 sets ground bearings hardened 3 de Fuselage Resin axle bolts spacers 5116 diameter bearing 114 Scale Model Fits 12 Fuselage Easy Use Instructions Included long wear Unbreakable Completely Fuelproof Fibre Glassing Producea Rock Hard Rubber Tread Will NOT Peel Offe Stores Flat Satin Smooth Surface Easy Painting Machined Polished Width Doubles Shop Use 3 yrds *1195 6 yrds $2195 No End Play Wobble STD 6 114 Scale $2095 9 yrds $3195 12 yrds $3995 81495 per set 12 $2795 12 $3196 2 $3895Send SASE Free Sample SAVE THIS AD OT ADVERTISE OFTENI NO SHIPPING CHARGES Marty Berr 84 Stonefield Trail ndsor 6074 192 Model Aviation No 657 Super Squire RO Trainer 35/40 2-stroke 53 4-stroke power spans 56 No 658 Shuriken Streak$225 CL Trainer uses 2-line Monoline control spans 17 t/2A power No659 Boom Box$400 FF Wakefield Rubber competition plane spans 54 No 193StIletto CL Stunt model McDonald winner 1976 1980 1982 PAl Wold Champs$ 375 No 262Crashmasfer CL Crash-proof trainer two sizos15/30 35/40 power$ 125 No 3101930 Fleet Biplane PC Sport Scale far 35/40 4-channel Wingspan 56 in. / scale Two sheets$ 625 No 314Drake II PC Ken Willarda flying boat far 3-channel 15-power Fly land renronable gear$ 375 No 326Taylor Cub PC Don Srulls Schoolyard-Scale 049s 2-3 channel Spans 50 in$ 350 No 332Zephyr PC Small 2-channel glider hand-launch tow thermal slope soaring$ 200 No 366Laser 200 PC Sport Scale replica championship Aerohafic flier Uses 40 power 4-5 channelTwo sheets$ 1075 No 4471/2A Miss America PC Old-Timer hA Texaco model 049 glow 2-channels$ 650 No 4604-40 RC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels 650 No 465Blue Max ii PC Fun-fly sportoter 40-size engines spans 52 Lightweight strecture S 700 No 533Cessna C-37 PC Schoolyard Scale famous 30s plane 049/10 power 2-ch spans 42 in$ 500 No 539Simitar Slow-MotIon 15 RC Tailless flying wing 15 engines spans 60 uses 3-ch PC$ 350 No 569Blectroafreak PC Electric aerobatic plane spans 44 uses 05 motorS 5 50 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-hobo built-up sorfacesS 400 No 572TR-260 RC Sport Scale Aerobafic plane 4-stroke 60/65 power spans 66 in$ 1100 No 576Serendipllyl ndoor EZ6 racord-holder spans line in$ 325 No 578schweizer 1-26B PC Quarter-scale Sailplane spans 125 Two plan sheets$ 1475 No 581Gee Model Y RC Golden Age Racer spans 72 1 scalel fur 60 power Three plan sheetsS tl75 No 586Snapdragon RC Fun-fly/sportoter 25/30 engines spans 45 in$ 600 No 568Marish PC Slope-Soaring Sailplane spans 41 in. uses 2 PC channelo$ 425 No 593Tayiorcraft PC Sport Scale light plane builds standard 2-placer clipped-wing air show stunter Spans eOhor 70 56 30/40 two-stroke 40/40 tour-otrake engine Two plan sheeto no dncumentatlonS 1000 No 595Sparrow PC Sportufer 25 engines spans 43 ro$ 650 No 596Coronet 150 PC-Assist Old-Timer enlarged 150% spans 72 uses 40-sire 4-ntmke/30-slze2-strokeS 650 No 601Nickel PC Sportoter engine 3 PC channels Spans 44 in$ 500 No 603Sparrow Hawk P-3D FF Competition robber-power plane won 87 Nato Spans 30 in$ 225 No 607Curtiss Seagull PC Giant Scale biplane spans 90 uses Quadra/Zenoah power Three plan sheets no doc$ 2400 No 609Taperwlng PC WA Pylon Pacer spans 29 Plan plus parts template sheet$ 600 No 610Profobypa PC Sport biplane spans 48 uses 45/2-cycle 60/4-cycle power$ 650 No 619Keith Rider R4 PP Scale golden Ago racer robber power spans 10 inS 300 No 620Gimlet 40 PC Sport/Puftem plane spans 6010 40/50 engine 12 oheets$ 1100 No 622Ouick P-3D PP Compehtion rubber-power P-30-class plane spans 30 in$ 325 No 623Henderson Longater PC Quarter-scale 1933 flinner spant 9gO/ 4-utreke 40/48 engine 13 plan uhf doc$ 1650 No 624Keteher Lark PC Quarter-scale homebuilt spans 6910 60/90 4-streke power 2 plan sheets no docS 1100 No 626Sweepee PC SportlPaoern canardo forward-swept wing spans 64 uses 40 power 2 plan sheets$ 1300 No 626Prime Cut PC Sport/Aerobatic plane spans 00 uses Quadra 35/40-sine power Two plan sheets$ 1300 No 630Original Fly Baby PC Old-Timer opono 72 uses 19/25 2-cycle 40 4-cycle power plan sheets$ 1150 No 632P-51H PP Lubomir Koutnys 5ncule Rubber model spans 23 in$ 325 No 633Orca PC Slope Sourer spans 75 uses twist-wing control Two-ch PC XMTR must have electronic mining$ 675 No 634SB2C Heildiver CL Profile sport/StonIer spans 54 35/40 power$ 575 No 635The Gambler PP Indoor Bostoniun rubber-power cabin plane spans 15% in$ 200 No 636Keytwo PC Tri-geored low-wing sporfoter 20125 puwer spans 44 0S 575 No 637A-B Shrtke PP Competition plane AMA Classes 6 15/23 power spans 60 I$ 675 No 638Owl Racer CL Scale Racer 049 power spans 20 in$ 225 No 639Skyvolt PC Tn-geared Electric aerobatic sportufer 05/15 power opens 50 in$ 6SO No 640BIrd 01 Pny CL AMA Pant Corlibaf plane 36 power spans 533/g in$ 550 No 641Lii Ole Reliable PC Old-Timer sport flier spans 50 engines$ 575 No 642Bipe 89 CL Partial plan upriatos deltults 48 nemiun 35cc power Spans 22 in$ 225 No 643Noctule IIB PP Batlike flying wing CO2 power spans 30 in$ 325 No 644Bellanca Columbia PC Schoolyard Scale 2 PC channels WA engine Wingspan 46 toS 575 No645Laird Solution CL Profile Scale biplane spans 36 25/35 power$ 575 No 646WInter Hawk PP Rubber-power Coupe dOiner compehtlon plane spans 47 in$ 375 No 647Coo Special CL Semiscale biplane WA engine spans 24 in$ 300 No 648Curtiss OC-2 PP SmIls Outdoor Gas Plying Scale biplane uses electric power spans 24 FurHiLine Mini-6 motor$ 325 No 649Thingamabob PC/CL Multimode trainer 25 gas 05 electric power spans SunS 475 No 65047/86 RC Special PC Aerehafic sport plane 40 power spans 611013 plan sheets $ 1075 No 651Consortium PC Hand-Launch Hi-Start Glider spans 60 in$ 650 No 652Der Fledermaus PC Low-wing sport plane 20/25 power spans 55 in$ 075 No 653Avanti CL Profile Sport Scale canard bboliner twin 049s spans 36 in$ 575 No 654Tamecat PC Trainor/sporfoter styled like P14 opans 66 40/61 power Pour plan sheetsS 1525 No 655Aatroatar PP AMA Clara A/B Gas plane spans 67 in. uses 325/350cc power$ 600 No 656XF13C CL Profile 15 Carrier plane spans 27ri in550 0 Os 0 OCtJ 0cJ s8 0 s S u0 0 08 no 80 co oE zeg 050 000 -o 0 crc -iz - t0e Os 000 0 C 0 0 - 0 0 8 0 c us 05 n 00 jnh 0 00 Os05 C0 0 0C 0 00 0 50 0 en 0 C Ec a-E CITY 00 us Circle numbers of plans YOU wish order best handling please include rel quests payment some other service plans order 193262310314326332386447 460465533539569570572576I o 81586588593595598601 07609610619620622623 624626628630632633634635 636637638639640641642643 644645646647648649650651I 0 652653654655656e657658659I Plan price includes first Class postage US delivery whiCh Air Mail over 300 miles orders non-US address iease add $250 Air Mali osta e handiin ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print CarefullyEnclosed $ _______________________ NAME _____________________________________________ AMA No ________________ STREETI couple things though should fixed explained page 196 May issue under specifications original aircraft balance point CG notation should have 47 tA ahead trailing edge main wing Maybe can explain canard airfoil model better way started out Eppler 203 cut foam main wing built-up canard structure ribs would have perpendicular leading edge pro duce airfoil shape Using foam did cutting 60 u angle wound up knows what airfoil con siderably thinner percent chord what started However being thinner helps make canard stall first desired now have good working drawings accurate 40%-scale Stratos same scale model shown article has clear canopy Id enjoy cor responding anyone interested build ing Ligeti Stratos long send pre-addressed stamped return envelope Stratos now has about 100 flights dependable maintenance free model Ive owned 18-ft-span powered Sailplane Ultimate Solitude mentioned article question mark time flies very nice 0S 61 four-stroker Its real floater 17 lb picture left Dennis Reichenbery right taken annual Jumbo event Marvin Reese 329 N Milstead Wichita KS 67212 at\-\r 8sG5 POUP HOOKY F5U3rOeUe 5 J 5 L iLF4i7LIIYRNSES P0 POX 8tOflP800IflOtknNSt7WHen SPOt ttHSHl 194 Model Aviation Bob Fiorenze Hobby Center Inc Dealer Yellow Aircraft UPS Orders Shipped Daily Now Available Feancover Covering Manerial visit Oar Showroom 135 mis Disney WarIdI NEW Custom Bulldin9 Service 420 Wean SR 43414071327-6352 Winter Springs FL 32709Fax 14071327-7148 LSTATEZIP _____________________________ [v32][b-1-10-1-10]] VEND MOUNTS88n888 Fall anO rust proof tOrso Con PO8 THE VIBRATION KILLER sotarlon 05 120 snalne. P8tH tirtuItn tirewati engine /880 mount TnpcaltlsratlonroOuctlvn ot ro5 Coo as-n nn Co conalete nnoufltH solota point rabound,,, e80ttOrs US/na lflStuCtIOnC88 585 to. send tnore ohmic monan ordor ner us aaa psoasons FO 500 Oseas SOSAsOOA FL seaaa ero 3700002 FL rHHdsnte 72* euto tat trosMAmoN sand 555*
Edition: Model Aviation - 1990/07
Page Numbers: 6, 8, 10, 12, 192, 194
rs et4 cutor letters will carefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Di Reston VA 22090 FT Vagabond Enclosed find picture old Frei Flight Vagabond 6-ft-span mode used Ohlsson 60 power Its las flight took place 40 years ago calm clear warm day nose dived 2000 feet concrete sur made spectacular crash Up time 21 absolutely flaw less flights day still wonder wha could have caused crash Could some please enlighten Bill Spathiat 2727 Lawtherwood Ct Dallas TX 7521Z suspicion something shifted Pei haps rubberband gave out resulting changed balance point incidence settin Any other ideas 1991 beyond major con cern seems 1991 has develope demon will swoop down de stroy miniature airplanes warn ing facts say far trut use some commonsense guidelinet As modelers seem bombarde kinds gadgets will enhanc modeling capabilities Some goo needed others may frill such gadget beeping fre quency control pin board seen Ma 1990 issue Model Aviation avail able Custom Tronics Texas confused AMA sticke stations California Custom Electronics Ive flying RC since 1967 ing electronics technician have enjoye growth RC equipment Today mor Continued page 6 Model Aviation Frequency Control Satisfaction Guaranteedi EAv HINEEZZ SH-710 Pkg 24- $295 THE HIGH-TECH HINGE DESIGNED FOR THE CYANOACRYLATE AGE Easier install other hinge No gouging picking messy epoxies Simply cut single knife slot hinge slide hinges place apply few drops favorite CA glue youre done SUPER FAST SUPER EASY SUPER STRONG 74e e4t /1a9e4 e 6aa c SIG MFG CO INC.401-7 So Front St.Montezuma IA 50171 23-5154 SPORT/PATTERN FLYING FOR ENGINE OR MOTOR SIMPLE TO BUILD TO FLY DESIGNS Featuring extensive pre fabrication including pre cut fuse lage sides tail feathers accurately die machine cut parts HAMMER 20 Pocket size pattern ship 20-30 engines 25 size electric motors Wing span 50 400 sq area 31/24 lbs flying weight Symmet rical airfoil tapered wing generous side area superb perf mance Has unique simplicity design quick accurate con struction 28 KITS TO CHOOSE FROM IPAVEY675 TOWER LANE YSTEMSWEST CHESTER PA 19380 ORPORATION 215-430-8645 modelers flying RC ever before making acquisition 50 RC channels 20 kI-Iz spacing very much needed channels may work well given area now have RC channels choose last several years have learned some new terms like 31M 2IMD lIM lIM later Some interferenc beyond control Wha can club help prolong model life club can have frequency sur vey done flying site using scannei receiver will let club know what frequencies should avoided Second club can become radio wise Ra dio wise knowing what 31M 2IMD anc lIM isand what to minimize ef fects Lets review what phenomenon known 31M occurs two transmitters operating different frequency generate interfering signal third frequency right another RC channel An important factor much difference between control RF power transmitter 31M RF power must present before interferencc can affect receiver attendance major Pattern meet used ICOM-7000 receives observed 31M action Showing fellow modeler AMA President Don Lowe both amazed see 31M RC channel watch pilot turn transmitter channel pro ceed fly unaffected Hmm Receivers must work designed course some better others pilots ha no interference problems during wholi three-day meetand receivers usi dual-conversion narrow-band de signs However transmitters gob stickers indicating narrow-ban units secret pilot spacing Thi four pilot stations separated thereb reducing 31M-generated RF power enougl affect same-channel receivers case able reject inter fering signal obey controlling trans mitter system spacing pilot sta tions along assigned frequencies t station take care adjacent-channe interference solves problem Next lets deal 2IMD Second Order Intermodulation Distortion Man wideband receivers using single-conver sion superheterodyne design suscepti ble type interference interfer ence occurs two transmitters use op erate channels frequency sepa rated approximately receivers inter mediate frequency other words avoic simultaneous use RC channels 2 number apart instance using th AMAs Interim Alternate Plan 1 May Mod el Aviation page 122 along narrow band transmitters will solve Now last type interference lIM phenomenon occurs whes Continued page h 8 Model Aviation HAMMER 40 Big brother Hammer 20 attributes- plus larger size wing span 60 620 sq area 4-5 lbs flying weight 35-45 two-cycle 40-60 four-cycle engines 40 size motors Does pattern manuevers can still fly like docile trainer CESSNA 150 real pretty sport scale copy famous trainer 20-30 twocycle 30-40 four-cycle engines 25 size electric motors Wing span 50 410 sq area 3l/24 lbs flying weight semi-symmetrical airfoil optional flaps wide speed range realistic performance ones airplane seems flying very uncontrolled manner due controlling influence brain know Pilot er ror have experienced Pilot error just dumb thumbs giving up elevator making highspeed inverted low pass includes ques tions like Did fully charge batter ies Did check correct direc tion control movement Did check c etc Also included lIM guy turns transmitter frequency youre flying As RC equipment becomes reliable old lIM begins loom biggest problem above systems frequency control have tried proved times fly-ins contests currently being used home RC club Prop Nuts Highland TX have 31M 2IMD problems although occasion old lIM gets us club has questions fre quency problems contact AMA dis trict frequency coordinator names ad dresses VP column headings AMA News section Im member AMA Frequency Committee will glad help too further frequency con trol guidelines see May 1990 MA page 120 Larry Dungan Box 1254 Pasadena TX 77501 Continued page 12 10 Model Aviation Supe Pos& Pojiswk 40. FREE CATALOG jfl 04 687-1702 K&S METAL AJuminumlBrasslCopper Tubing & Shapes Music Wire sTools Soldering Irons Silk Silk Span Finishing Materials 4 catalog Pwudwet A63A WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY SALSA SHUTS 36 45 30 1633 332240 18 243 316249 14 256 132337 120337 1 1633749 31 33234458 37 18 35471 45 31636282 99 14 373 95 61 916385110 3S 388924 71 12 3110155 34 3169191 916459 7648 332470 9456 98 480106 66 31649312270 14 4110134 84 38 65225139 12 4225261 MATCHED SHEETS 42 3324100 84108 3164120 144131 SAL SAS11CKS 364 1161409 1 163810 1161214 3321410 3323812 3321216 191808 18.14II16 18381218 19121024 3163161116 316381720 316122230 14141624 14381926 14122130 14343444 14I4055 5165167128 38382737 3S123246 39344255 3815270 12123652 12344662 1215878 58584869 34346790 WHAT 00 CALL THE BEST SHEETINGTwerskins MATERIAL FOR FOAM WING CORES CHECK THESE FEATURESGyro, 0 yha fyllosong color Superyrsroglfl ll rOoWaco 04 0uyrr 505 CaybI,y Ey loamPolar 550, 001 pr sq n Ompryur,Oabyy0SSO9 01, Smofl h4fl gloss lflOSun IIow Supr,r ra,saooa O n5r0 luI Suporror rss,no 5c us,tOg Eay tO apply LOw low 0505 Cl /64 5,, Phone 3093423009 I//N6MF6t FAX 300-342-3014 OyOly50 Oraoo,aornonno,rooo,,5oon uausooynooloynoo uao uuuo,ooaonuo un,$4flpersheet SEND 9400 FOR CATALOGllnos 0,Onl 0440 1 /Oo sales 0a WING MIg 306 E Simmons Galesburg IL 61401 & & MODEL BUILDING 7SERVICE RADIO CONTPOL P1OOUCTS carry full Iinof Byron Originals Bdb Parkerson Tom Cook Bob Violet products COD Orders Accepted 718 983-9735 328 WATCHOGUE ROAD STATEN 11AM 0 NY 10314 w IALSA TRIANGLES 36 4425 383630 235 33445 55 BALSA PLANKS 36 90 257 329 4293 11/23302 11/24396 22231 23336 24476 33615 34715 TAPERED SHEETS36 14265 14385 36268 38398 123120 About Uncle SASS WOOD4 311631626 3/1611430 31163838 31611246 3163460 141442 143849 143480 3/83860 381270 383400 1211290 1234100 BUNDLE DEALS 30-116336688 201164361035 20332336860 15332436955 1618336735 1018436895 19316336920 10316 438839 10-14336655 1014438930 1039336870 538436600 512336540 INSTANT GLUE 5324361080 1 75ok 298 10332448885 ba TOrn 298 5184 48500 2, Thck 650 5316448600 2, 150 550 514448645 TRAILING EDGE 36 14132 51611439 3811246 12270 wrote poem about uncle best friend Perhaps some readers would enjoy Maybe some RC nuts too RC Nut always know whereabouts field no doubt flies plane day nothing ever keeps him away cold outside Warm clothes donned stride snow around Skis used get off ground plane does crash fixes up flash MonoKote iron instant glue makes look just like new works straight through night ready next flight Gloria Shaffer Duanesburg NY Bell-Anchor intriguing exquisite piece writing artistry Ive ever privi leged conned Bell-Anchor April 1990 issue Scratch Biltright commendeda super con artist Ole dummy sat down thought hed like build Bell-Anchor Whoa Continued page 192 SPRUCE TRIANGL ES 36 38 7 121284 34 34 5 PL VUIRCII 48 3132xt2700 1I8x12776 3I16x12626 114x12626 3/8x12726 112xt2900 GROOVED LG PII3UNTS lZIvacIme 3834/18/40 3834/532140 I234/316/45 AT LAST An Effective High Tech Engine Cleaner R/O Engines Just Brush & Carbons Gone-Guaranteed ONLY $695 CA residents add 725% tax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 Satisfaction Guaranteed Direct Only CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa HARD MAPLE 1 4 38 38 38 38 12 38 34 12 40 45 50 99 66 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 364 18 181725 SINCH DOWELS36 18 09 31611 1414 51625 3/832 18 18 18 3/8 316316 14 14 14 38 14 12 38 38 3812 12 2 3/4 LIGHT 4-6 LB WOOD36 1/22362 1/20362 1/18382 3/22374 1/8391 3/183105 1/43125 3/83158 1/23186 3/43300 13425 1/18498 3/324118 1/84135 3/164157 1/44189 3184285 1/24386 LONE STAR EPOXY81 BALSA HOT LINE9o LI895LITIPLY4 1/8x6176 Cull 806 745 6394 lOem6 pmCen8relTumeSn,598115x12360 30n,n599 114x6276 LONE STAR MODELS114x12560 Ccnt48 Handling Charge pay UPS Add $350 COD *400 exfra PP APO FPO 1623 57tl St Lubbock TX 79412Wan6jI M4jr pesonel checks orCOD6I%8axinTexaeUScurrencyonly Minimum Wood Order $1000 3026 2232 2838 3490 4055 4560 4969 6077 6688 7597 SPLYWIMCN48 t/64x12536 1132x12475 1116x12476 lIBxt2496 Matched Performance System TOP PERFORMANCE K&B ENGINES AkpksleManse K&B FUELS186 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE 186 FIBERGLASS CLOTH 180 Micro-Balloons TILLER 185 SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER 185 SUPER POXY PAINT K&B MIXING CUPS 12 Model Aviation DEALERS INQUIRES WELCOME Bill Etfinger * says OnlyPlane Pastern0 Seto give coo asserted designs voc want have selected best clasoic designs time coo choose patterns part important eacluelve feature Ducted Fans Navy F4D-1 Skyray ecZIIIIIIIeLsF 020 go 1 eoateOeIength 44h wingspan 41PtO oh 6/C eoribte Landing Gear soste ength 3-S oh CIC eK-20 2 One-Third Scale Piper Tn-Pacer PA-22 16-319 wing seen eq wing area 20 3g cid engines Por4-5 oh eic ao t2 lbs el-lie acerati coach ft 1/3 Scale Piper Cub J-3 110 wing span ength 2000sqlnwwgarss doheiC 20 ao old eegioee RC35 2$2905 Quarter Scale WW SE-SA go% span sq wing area 70 22 engines SCOS 7 5 Quarter Scale WWI Fokker D-VIINew SPAD CXIII 79Yewing span2125 sq wing area t3to 31 ettgines Copahie flyer-it captures imagination RCOS-0 0 00 wrvyupav sq inlog ama a90 2hcrd evolve SOchlt lbs FOKKER DR-i TRIPLANEo OCOS ht24 95 72 wing span sat intIIIL.a.Full cantilever wings no flying wired Removal enolno volt Shockwing area 70 tot 50 esgineuot-- mouvted landing gear Oaluaiplywood fuselage huilt-up hieso wing RCO54 $2405 N r bitt Effinger Poonding Member AMA OFFS Hall Famer SOPWITH CAMEL F1Prices Conipiete plans cub asservely ft darailed p0ev lists PLEASE ADD 44 wing span 2100 sq iv0205 tor sbppng Imalog tahel Sour 1990 PIne Sets b Ovhuic Proc wing area 11 lbs wia SIC ofundable cv t 5 Orde wood & balsa cansnuvnon overCTECHNICAL 05 sq ft drawingsWESERVICES lOCOS t t 5 Rt 1 Box2SOOA Santa Rosa Beach FL32459 r MO WNG know bl advancesix weeksOF ADDRESS LET US KNOW WHERE YOU ARE GOINGWhen move please let us appropriate box mail Chk quwed change address Attach current MA mailing label boxenclose payment E NEW SUBSCRIPTION IappropriafOflin 1810 Samuel Morse Dr Reston VA 22090 Non-AMA-member subscription rates $1800 12 months US addresses US Schools $900 Libraries $1350 elsewhere including Canada Mexico $2900 Payment must check money order US funds drawn US bank NameI AddressI City/State_______________ ZIP ____I Model Aviation 1810 Samuel Morse Dr Reston VA 22090I complete virtually identical models hang ing ceiling immediate interest classrooms dedicated photography playing musical instruments static dis play models various types dance host other subjects housed same building suppose centers could viewed great places drop chil dren off after work possibly some par ents utilize evening-care centers well think however enjoy ment places sure theres also undertone serious ness offer opportunity excel society places great emphasis its youth does succeed-ordo-something-else basis Most us have seenusually courtesy TV coverage international sporting eventhow So viet system selects very few promising youngsters among thousands thou sands intensive training say gymnas tics effort bit laid-back aeromodeling principle same Competition Soviet national contests must very intense indeed Russians perceive modeling dif ferent light us Americans view hobby Soviets view sport treat such shall soon see myself trip Leningrad such terrific fun Bob Carver wife Diana planning attend Cup Leningrad CL contest mid-May Carl Dodge FAL Speed Bob Whitley FAI Precision Aerobatics Tim Gillott/Jeff Hollfelder FAI Team Race hope join us As enticement US participation Soviets have added /2A Combat AMA Combat list scheduled events got could Carverwho sponsors annual Bladder Grabber largest US Fast Combat meetsand resist being among first fly Bad Boy Combat right Vladimir Le nins front yard Letters Editor Continued page 12 cant done says hesorry buster youve conned Nice job Ill remember next con published A G Ronay Hoffman Estates IL Ligeti Stratos Its easy understand Model Avia tion well liked took pretty good article made greatthanks no small part Bob Banka Scale Model Re search some great photos full-size Stratos Continued page 194 SAFE FLYING IS NO ACCIDENT PROMISE* Mew 42 wkie * * low Product *Full Satlstactlou Full RefundSame Lower Price 58 oz GLASS CLOTH FORM 10500Compare Prices Sport-- PLAIN CRADLE2 ide Mirror Wheels h...-i~ Same Low Price 2/e Hardened minume Treated Use Epoxy Polyester Includes 2 sets ground bearings hardened 3 de Fuselage Resin axle bolts spacers 5116 diameter bearing 114 Scale Model Fits 12 Fuselage Easy Use Instructions Included long wear Unbreakable Completely Fuelproof Fibre Glassing Producea Rock Hard Rubber Tread Will NOT Peel Offe Stores Flat Satin Smooth Surface Easy Painting Machined Polished Width Doubles Shop Use 3 yrds *1195 6 yrds $2195 No End Play Wobble STD 6 114 Scale $2095 9 yrds $3195 12 yrds $3995 81495 per set 12 $2795 12 $3196 2 $3895Send SASE Free Sample SAVE THIS AD OT ADVERTISE OFTENI NO SHIPPING CHARGES Marty Berr 84 Stonefield Trail ndsor 6074 192 Model Aviation No 657 Super Squire RO Trainer 35/40 2-stroke 53 4-stroke power spans 56 No 658 Shuriken Streak$225 CL Trainer uses 2-line Monoline control spans 17 t/2A power No659 Boom Box$400 FF Wakefield Rubber competition plane spans 54 No 193StIletto CL Stunt model McDonald winner 1976 1980 1982 PAl Wold Champs$ 375 No 262Crashmasfer CL Crash-proof trainer two sizos15/30 35/40 power$ 125 No 3101930 Fleet Biplane PC Sport Scale far 35/40 4-channel Wingspan 56 in. / scale Two sheets$ 625 No 314Drake II PC Ken Willarda flying boat far 3-channel 15-power Fly land renronable gear$ 375 No 326Taylor Cub PC Don Srulls Schoolyard-Scale 049s 2-3 channel Spans 50 in$ 350 No 332Zephyr PC Small 2-channel glider hand-launch tow thermal slope soaring$ 200 No 366Laser 200 PC Sport Scale replica championship Aerohafic flier Uses 40 power 4-5 channelTwo sheets$ 1075 No 4471/2A Miss America PC Old-Timer hA Texaco model 049 glow 2-channels$ 650 No 4604-40 RC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels 650 No 465Blue Max ii PC Fun-fly sportoter 40-size engines spans 52 Lightweight strecture S 700 No 533Cessna C-37 PC Schoolyard Scale famous 30s plane 049/10 power 2-ch spans 42 in$ 500 No 539Simitar Slow-MotIon 15 RC Tailless flying wing 15 engines spans 60 uses 3-ch PC$ 350 No 569Blectroafreak PC Electric aerobatic plane spans 44 uses 05 motorS 5 50 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-hobo built-up sorfacesS 400 No 572TR-260 RC Sport Scale Aerobafic plane 4-stroke 60/65 power spans 66 in$ 1100 No 576Serendipllyl ndoor EZ6 racord-holder spans line in$ 325 No 578schweizer 1-26B PC Quarter-scale Sailplane spans 125 Two plan sheets$ 1475 No 581Gee Model Y RC Golden Age Racer spans 72 1 scalel fur 60 power Three plan sheetsS tl75 No 586Snapdragon RC Fun-fly/sportoter 25/30 engines spans 45 in$ 600 No 568Marish PC Slope-Soaring Sailplane spans 41 in. uses 2 PC channelo$ 425 No 593Tayiorcraft PC Sport Scale light plane builds standard 2-placer clipped-wing air show stunter Spans eOhor 70 56 30/40 two-stroke 40/40 tour-otrake engine Two plan sheeto no dncumentatlonS 1000 No 595Sparrow PC Sportufer 25 engines spans 43 ro$ 650 No 596Coronet 150 PC-Assist Old-Timer enlarged 150% spans 72 uses 40-sire 4-ntmke/30-slze2-strokeS 650 No 601Nickel PC Sportoter engine 3 PC channels Spans 44 in$ 500 No 603Sparrow Hawk P-3D FF Competition robber-power plane won 87 Nato Spans 30 in$ 225 No 607Curtiss Seagull PC Giant Scale biplane spans 90 uses Quadra/Zenoah power Three plan sheets no doc$ 2400 No 609Taperwlng PC WA Pylon Pacer spans 29 Plan plus parts template sheet$ 600 No 610Profobypa PC Sport biplane spans 48 uses 45/2-cycle 60/4-cycle power$ 650 No 619Keith Rider R4 PP Scale golden Ago racer robber power spans 10 inS 300 No 620Gimlet 40 PC Sport/Puftem plane spans 6010 40/50 engine 12 oheets$ 1100 No 622Ouick P-3D PP Compehtion rubber-power P-30-class plane spans 30 in$ 325 No 623Henderson Longater PC Quarter-scale 1933 flinner spant 9gO/ 4-utreke 40/48 engine 13 plan uhf doc$ 1650 No 624Keteher Lark PC Quarter-scale homebuilt spans 6910 60/90 4-streke power 2 plan sheets no docS 1100 No 626Sweepee PC SportlPaoern canardo forward-swept wing spans 64 uses 40 power 2 plan sheets$ 1300 No 626Prime Cut PC Sport/Aerobatic plane spans 00 uses Quadra 35/40-sine power Two plan sheets$ 1300 No 630Original Fly Baby PC Old-Timer opono 72 uses 19/25 2-cycle 40 4-cycle power plan sheets$ 1150 No 632P-51H PP Lubomir Koutnys 5ncule Rubber model spans 23 in$ 325 No 633Orca PC Slope Sourer spans 75 uses twist-wing control Two-ch PC XMTR must have electronic mining$ 675 No 634SB2C Heildiver CL Profile sport/StonIer spans 54 35/40 power$ 575 No 635The Gambler PP Indoor Bostoniun rubber-power cabin plane spans 15% in$ 200 No 636Keytwo PC Tri-geored low-wing sporfoter 20125 puwer spans 44 0S 575 No 637A-B Shrtke PP Competition plane AMA Classes 6 15/23 power spans 60 I$ 675 No 638Owl Racer CL Scale Racer 049 power spans 20 in$ 225 No 639Skyvolt PC Tn-geared Electric aerobatic sportufer 05/15 power opens 50 in$ 6SO No 640BIrd 01 Pny CL AMA Pant Corlibaf plane 36 power spans 533/g in$ 550 No 641Lii Ole Reliable PC Old-Timer sport flier spans 50 engines$ 575 No 642Bipe 89 CL Partial plan upriatos deltults 48 nemiun 35cc power Spans 22 in$ 225 No 643Noctule IIB PP Batlike flying wing CO2 power spans 30 in$ 325 No 644Bellanca Columbia PC Schoolyard Scale 2 PC channels WA engine Wingspan 46 toS 575 No645Laird Solution CL Profile Scale biplane spans 36 25/35 power$ 575 No 646WInter Hawk PP Rubber-power Coupe dOiner compehtlon plane spans 47 in$ 375 No 647Coo Special CL Semiscale biplane WA engine spans 24 in$ 300 No 648Curtiss OC-2 PP SmIls Outdoor Gas Plying Scale biplane uses electric power spans 24 FurHiLine Mini-6 motor$ 325 No 649Thingamabob PC/CL Multimode trainer 25 gas 05 electric power spans SunS 475 No 65047/86 RC Special PC Aerehafic sport plane 40 power spans 611013 plan sheets $ 1075 No 651Consortium PC Hand-Launch Hi-Start Glider spans 60 in$ 650 No 652Der Fledermaus PC Low-wing sport plane 20/25 power spans 55 in$ 075 No 653Avanti CL Profile Sport Scale canard bboliner twin 049s spans 36 in$ 575 No 654Tamecat PC Trainor/sporfoter styled like P14 opans 66 40/61 power Pour plan sheetsS 1525 No 655Aatroatar PP AMA Clara A/B Gas plane spans 67 in. uses 325/350cc power$ 600 No 656XF13C CL Profile 15 Carrier plane spans 27ri in550 0 Os 0 OCtJ 0cJ s8 0 s S u0 0 08 no 80 co oE zeg 050 000 -o 0 crc -iz - t0e Os 000 0 C 0 0 - 0 0 8 0 c us 05 n 00 jnh 0 00 Os05 C0 0 0C 0 00 0 50 0 en 0 C Ec a-E CITY 00 us Circle numbers of plans YOU wish order best handling please include rel quests payment some other service plans order 193262310314326332386447 460465533539569570572576I o 81586588593595598601 07609610619620622623 624626628630632633634635 636637638639640641642643 644645646647648649650651I 0 652653654655656e657658659I Plan price includes first Class postage US delivery whiCh Air Mail over 300 miles orders non-US address iease add $250 Air Mali osta e handiin ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print CarefullyEnclosed $ _______________________ NAME _____________________________________________ AMA No ________________ STREETI couple things though should fixed explained page 196 May issue under specifications original aircraft balance point CG notation should have 47 tA ahead trailing edge main wing Maybe can explain canard airfoil model better way started out Eppler 203 cut foam main wing built-up canard structure ribs would have perpendicular leading edge pro duce airfoil shape Using foam did cutting 60 u angle wound up knows what airfoil con siderably thinner percent chord what started However being thinner helps make canard stall first desired now have good working drawings accurate 40%-scale Stratos same scale model shown article has clear canopy Id enjoy cor responding anyone interested build ing Ligeti Stratos long send pre-addressed stamped return envelope Stratos now has about 100 flights dependable maintenance free model Ive owned 18-ft-span powered Sailplane Ultimate Solitude mentioned article question mark time flies very nice 0S 61 four-stroker Its real floater 17 lb picture left Dennis Reichenbery right taken annual Jumbo event Marvin Reese 329 N Milstead Wichita KS 67212 at\-\r 8sG5 POUP HOOKY F5U3rOeUe 5 J 5 L iLF4i7LIIYRNSES P0 POX 8tOflP800IflOtknNSt7WHen SPOt ttHSHl 194 Model Aviation Bob Fiorenze Hobby Center Inc Dealer Yellow Aircraft UPS Orders Shipped Daily Now Available Feancover Covering Manerial visit Oar Showroom 135 mis Disney WarIdI NEW Custom Bulldin9 Service 420 Wean SR 43414071327-6352 Winter Springs FL 32709Fax 14071327-7148 LSTATEZIP _____________________________ [v32][b-1-10-1-10]] VEND MOUNTS88n888 Fall anO rust proof tOrso Con PO8 THE VIBRATION KILLER sotarlon 05 120 snalne. P8tH tirtuItn tirewati engine /880 mount TnpcaltlsratlonroOuctlvn ot ro5 Coo as-n nn Co conalete nnoufltH solota point rabound,,, e80ttOrs US/na lflStuCtIOnC88 585 to. send tnore ohmic monan ordor ner us aaa psoasons FO 500 Oseas SOSAsOOA FL seaaa ero 3700002 FL rHHdsnte 72* euto tat trosMAmoN sand 555*
Edition: Model Aviation - 1990/07
Page Numbers: 6, 8, 10, 12, 192, 194
rs et4 cutor letters will carefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Di Reston VA 22090 FT Vagabond Enclosed find picture old Frei Flight Vagabond 6-ft-span mode used Ohlsson 60 power Its las flight took place 40 years ago calm clear warm day nose dived 2000 feet concrete sur made spectacular crash Up time 21 absolutely flaw less flights day still wonder wha could have caused crash Could some please enlighten Bill Spathiat 2727 Lawtherwood Ct Dallas TX 7521Z suspicion something shifted Pei haps rubberband gave out resulting changed balance point incidence settin Any other ideas 1991 beyond major con cern seems 1991 has develope demon will swoop down de stroy miniature airplanes warn ing facts say far trut use some commonsense guidelinet As modelers seem bombarde kinds gadgets will enhanc modeling capabilities Some goo needed others may frill such gadget beeping fre quency control pin board seen Ma 1990 issue Model Aviation avail able Custom Tronics Texas confused AMA sticke stations California Custom Electronics Ive flying RC since 1967 ing electronics technician have enjoye growth RC equipment Today mor Continued page 6 Model Aviation Frequency Control Satisfaction Guaranteedi EAv HINEEZZ SH-710 Pkg 24- $295 THE HIGH-TECH HINGE DESIGNED FOR THE CYANOACRYLATE AGE Easier install other hinge No gouging picking messy epoxies Simply cut single knife slot hinge slide hinges place apply few drops favorite CA glue youre done SUPER FAST SUPER EASY SUPER STRONG 74e e4t /1a9e4 e 6aa c SIG MFG CO INC.401-7 So Front St.Montezuma IA 50171 23-5154 SPORT/PATTERN FLYING FOR ENGINE OR MOTOR SIMPLE TO BUILD TO FLY DESIGNS Featuring extensive pre fabrication including pre cut fuse lage sides tail feathers accurately die machine cut parts HAMMER 20 Pocket size pattern ship 20-30 engines 25 size electric motors Wing span 50 400 sq area 31/24 lbs flying weight Symmet rical airfoil tapered wing generous side area superb perf mance Has unique simplicity design quick accurate con struction 28 KITS TO CHOOSE FROM IPAVEY675 TOWER LANE YSTEMSWEST CHESTER PA 19380 ORPORATION 215-430-8645 modelers flying RC ever before making acquisition 50 RC channels 20 kI-Iz spacing very much needed channels may work well given area now have RC channels choose last several years have learned some new terms like 31M 2IMD lIM lIM later Some interferenc beyond control Wha can club help prolong model life club can have frequency sur vey done flying site using scannei receiver will let club know what frequencies should avoided Second club can become radio wise Ra dio wise knowing what 31M 2IMD anc lIM isand what to minimize ef fects Lets review what phenomenon known 31M occurs two transmitters operating different frequency generate interfering signal third frequency right another RC channel An important factor much difference between control RF power transmitter 31M RF power must present before interferencc can affect receiver attendance major Pattern meet used ICOM-7000 receives observed 31M action Showing fellow modeler AMA President Don Lowe both amazed see 31M RC channel watch pilot turn transmitter channel pro ceed fly unaffected Hmm Receivers must work designed course some better others pilots ha no interference problems during wholi three-day meetand receivers usi dual-conversion narrow-band de signs However transmitters gob stickers indicating narrow-ban units secret pilot spacing Thi four pilot stations separated thereb reducing 31M-generated RF power enougl affect same-channel receivers case able reject inter fering signal obey controlling trans mitter system spacing pilot sta tions along assigned frequencies t station take care adjacent-channe interference solves problem Next lets deal 2IMD Second Order Intermodulation Distortion Man wideband receivers using single-conver sion superheterodyne design suscepti ble type interference interfer ence occurs two transmitters use op erate channels frequency sepa rated approximately receivers inter mediate frequency other words avoic simultaneous use RC channels 2 number apart instance using th AMAs Interim Alternate Plan 1 May Mod el Aviation page 122 along narrow band transmitters will solve Now last type interference lIM phenomenon occurs whes Continued page h 8 Model Aviation HAMMER 40 Big brother Hammer 20 attributes- plus larger size wing span 60 620 sq area 4-5 lbs flying weight 35-45 two-cycle 40-60 four-cycle engines 40 size motors Does pattern manuevers can still fly like docile trainer CESSNA 150 real pretty sport scale copy famous trainer 20-30 twocycle 30-40 four-cycle engines 25 size electric motors Wing span 50 410 sq area 3l/24 lbs flying weight semi-symmetrical airfoil optional flaps wide speed range realistic performance ones airplane seems flying very uncontrolled manner due controlling influence brain know Pilot er ror have experienced Pilot error just dumb thumbs giving up elevator making highspeed inverted low pass includes ques tions like Did fully charge batter ies Did check correct direc tion control movement Did check c etc Also included lIM guy turns transmitter frequency youre flying As RC equipment becomes reliable old lIM begins loom biggest problem above systems frequency control have tried proved times fly-ins contests currently being used home RC club Prop Nuts Highland TX have 31M 2IMD problems although occasion old lIM gets us club has questions fre quency problems contact AMA dis trict frequency coordinator names ad dresses VP column headings AMA News section Im member AMA Frequency Committee will glad help too further frequency con trol guidelines see May 1990 MA page 120 Larry Dungan Box 1254 Pasadena TX 77501 Continued page 12 10 Model Aviation Supe Pos& Pojiswk 40. FREE CATALOG jfl 04 687-1702 K&S METAL AJuminumlBrasslCopper Tubing & Shapes Music Wire sTools Soldering Irons Silk Silk Span Finishing Materials 4 catalog Pwudwet A63A WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY SALSA SHUTS 36 45 30 1633 332240 18 243 316249 14 256 132337 120337 1 1633749 31 33234458 37 18 35471 45 31636282 99 14 373 95 61 916385110 3S 388924 71 12 3110155 34 3169191 916459 7648 332470 9456 98 480106 66 31649312270 14 4110134 84 38 65225139 12 4225261 MATCHED SHEETS 42 3324100 84108 3164120 144131 SAL SAS11CKS 364 1161409 1 163810 1161214 3321410 3323812 3321216 191808 18.14II16 18381218 19121024 3163161116 316381720 316122230 14141624 14381926 14122130 14343444 14I4055 5165167128 38382737 3S123246 39344255 3815270 12123652 12344662 1215878 58584869 34346790 WHAT 00 CALL THE BEST SHEETINGTwerskins MATERIAL FOR FOAM WING CORES CHECK THESE FEATURESGyro, 0 yha fyllosong color Superyrsroglfl ll rOoWaco 04 0uyrr 505 CaybI,y Ey loamPolar 550, 001 pr sq n Ompryur,Oabyy0SSO9 01, Smofl h4fl gloss lflOSun IIow Supr,r ra,saooa O n5r0 luI Suporror rss,no 5c us,tOg Eay tO apply LOw low 0505 Cl /64 5,, Phone 3093423009 I//N6MF6t FAX 300-342-3014 OyOly50 Oraoo,aornonno,rooo,,5oon uausooynooloynoo uao uuuo,ooaonuo un,$4flpersheet SEND 9400 FOR CATALOGllnos 0,Onl 0440 1 /Oo sales 0a WING MIg 306 E Simmons Galesburg IL 61401 & & MODEL BUILDING 7SERVICE RADIO CONTPOL P1OOUCTS carry full Iinof Byron Originals Bdb Parkerson Tom Cook Bob Violet products COD Orders Accepted 718 983-9735 328 WATCHOGUE ROAD STATEN 11AM 0 NY 10314 w IALSA TRIANGLES 36 4425 383630 235 33445 55 BALSA PLANKS 36 90 257 329 4293 11/23302 11/24396 22231 23336 24476 33615 34715 TAPERED SHEETS36 14265 14385 36268 38398 123120 About Uncle SASS WOOD4 311631626 3/1611430 31163838 31611246 3163460 141442 143849 143480 3/83860 381270 383400 1211290 1234100 BUNDLE DEALS 30-116336688 201164361035 20332336860 15332436955 1618336735 1018436895 19316336920 10316 438839 10-14336655 1014438930 1039336870 538436600 512336540 INSTANT GLUE 5324361080 1 75ok 298 10332448885 ba TOrn 298 5184 48500 2, Thck 650 5316448600 2, 150 550 514448645 TRAILING EDGE 36 14132 51611439 3811246 12270 wrote poem about uncle best friend Perhaps some readers would enjoy Maybe some RC nuts too RC Nut always know whereabouts field no doubt flies plane day nothing ever keeps him away cold outside Warm clothes donned stride snow around Skis used get off ground plane does crash fixes up flash MonoKote iron instant glue makes look just like new works straight through night ready next flight Gloria Shaffer Duanesburg NY Bell-Anchor intriguing exquisite piece writing artistry Ive ever privi leged conned Bell-Anchor April 1990 issue Scratch Biltright commendeda super con artist Ole dummy sat down thought hed like build Bell-Anchor Whoa Continued page 192 SPRUCE TRIANGL ES 36 38 7 121284 34 34 5 PL VUIRCII 48 3132xt2700 1I8x12776 3I16x12626 114x12626 3/8x12726 112xt2900 GROOVED LG PII3UNTS lZIvacIme 3834/18/40 3834/532140 I234/316/45 AT LAST An Effective High Tech Engine Cleaner R/O Engines Just Brush & Carbons Gone-Guaranteed ONLY $695 CA residents add 725% tax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 Satisfaction Guaranteed Direct Only CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa HARD MAPLE 1 4 38 38 38 38 12 38 34 12 40 45 50 99 66 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 364 18 181725 SINCH DOWELS36 18 09 31611 1414 51625 3/832 18 18 18 3/8 316316 14 14 14 38 14 12 38 38 3812 12 2 3/4 LIGHT 4-6 LB WOOD36 1/22362 1/20362 1/18382 3/22374 1/8391 3/183105 1/43125 3/83158 1/23186 3/43300 13425 1/18498 3/324118 1/84135 3/164157 1/44189 3184285 1/24386 LONE STAR EPOXY81 BALSA HOT LINE9o LI895LITIPLY4 1/8x6176 Cull 806 745 6394 lOem6 pmCen8relTumeSn,598115x12360 30n,n599 114x6276 LONE STAR MODELS114x12560 Ccnt48 Handling Charge pay UPS Add $350 COD *400 exfra PP APO FPO 1623 57tl St Lubbock TX 79412Wan6jI M4jr pesonel checks orCOD6I%8axinTexaeUScurrencyonly Minimum Wood Order $1000 3026 2232 2838 3490 4055 4560 4969 6077 6688 7597 SPLYWIMCN48 t/64x12536 1132x12475 1116x12476 lIBxt2496 Matched Performance System TOP PERFORMANCE K&B ENGINES AkpksleManse K&B FUELS186 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE 186 FIBERGLASS CLOTH 180 Micro-Balloons TILLER 185 SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER 185 SUPER POXY PAINT K&B MIXING CUPS 12 Model Aviation DEALERS INQUIRES WELCOME Bill Etfinger * says OnlyPlane Pastern0 Seto give coo asserted designs voc want have selected best clasoic designs time coo choose patterns part important eacluelve feature Ducted Fans Navy F4D-1 Skyray ecZIIIIIIIeLsF 020 go 1 eoateOeIength 44h wingspan 41PtO oh 6/C eoribte Landing Gear soste ength 3-S oh CIC eK-20 2 One-Third Scale Piper Tn-Pacer PA-22 16-319 wing seen eq wing area 20 3g cid engines Por4-5 oh eic ao t2 lbs el-lie acerati coach ft 1/3 Scale Piper Cub J-3 110 wing span ength 2000sqlnwwgarss doheiC 20 ao old eegioee RC35 2$2905 Quarter Scale WW SE-SA go% span sq wing area 70 22 engines SCOS 7 5 Quarter Scale WWI Fokker D-VIINew SPAD CXIII 79Yewing span2125 sq wing area t3to 31 ettgines Copahie flyer-it captures imagination RCOS-0 0 00 wrvyupav sq inlog ama a90 2hcrd evolve SOchlt lbs FOKKER DR-i TRIPLANEo OCOS ht24 95 72 wing span sat intIIIL.a.Full cantilever wings no flying wired Removal enolno volt Shockwing area 70 tot 50 esgineuot-- mouvted landing gear Oaluaiplywood fuselage huilt-up hieso wing RCO54 $2405 N r bitt Effinger Poonding Member AMA OFFS Hall Famer SOPWITH CAMEL F1Prices Conipiete plans cub asservely ft darailed p0ev lists PLEASE ADD 44 wing span 2100 sq iv0205 tor sbppng Imalog tahel Sour 1990 PIne Sets b Ovhuic Proc wing area 11 lbs wia SIC ofundable cv t 5 Orde wood & balsa cansnuvnon overCTECHNICAL 05 sq ft drawingsWESERVICES lOCOS t t 5 Rt 1 Box2SOOA Santa Rosa Beach FL32459 r MO WNG know bl advancesix weeksOF ADDRESS LET US KNOW WHERE YOU ARE GOINGWhen move please let us appropriate box mail Chk quwed change address Attach current MA mailing label boxenclose payment E NEW SUBSCRIPTION IappropriafOflin 1810 Samuel Morse Dr Reston VA 22090 Non-AMA-member subscription rates $1800 12 months US addresses US Schools $900 Libraries $1350 elsewhere including Canada Mexico $2900 Payment must check money order US funds drawn US bank NameI AddressI City/State_______________ ZIP ____I Model Aviation 1810 Samuel Morse Dr Reston VA 22090I complete virtually identical models hang ing ceiling immediate interest classrooms dedicated photography playing musical instruments static dis play models various types dance host other subjects housed same building suppose centers could viewed great places drop chil dren off after work possibly some par ents utilize evening-care centers well think however enjoy ment places sure theres also undertone serious ness offer opportunity excel society places great emphasis its youth does succeed-ordo-something-else basis Most us have seenusually courtesy TV coverage international sporting eventhow So viet system selects very few promising youngsters among thousands thou sands intensive training say gymnas tics effort bit laid-back aeromodeling principle same Competition Soviet national contests must very intense indeed Russians perceive modeling dif ferent light us Americans view hobby Soviets view sport treat such shall soon see myself trip Leningrad such terrific fun Bob Carver wife Diana planning attend Cup Leningrad CL contest mid-May Carl Dodge FAL Speed Bob Whitley FAI Precision Aerobatics Tim Gillott/Jeff Hollfelder FAI Team Race hope join us As enticement US participation Soviets have added /2A Combat AMA Combat list scheduled events got could Carverwho sponsors annual Bladder Grabber largest US Fast Combat meetsand resist being among first fly Bad Boy Combat right Vladimir Le nins front yard Letters Editor Continued page 12 cant done says hesorry buster youve conned Nice job Ill remember next con published A G Ronay Hoffman Estates IL Ligeti Stratos Its easy understand Model Avia tion well liked took pretty good article made greatthanks no small part Bob Banka Scale Model Re search some great photos full-size Stratos Continued page 194 SAFE FLYING IS NO ACCIDENT PROMISE* Mew 42 wkie * * low Product *Full Satlstactlou Full RefundSame Lower Price 58 oz GLASS CLOTH FORM 10500Compare Prices Sport-- PLAIN CRADLE2 ide Mirror Wheels h...-i~ Same Low Price 2/e Hardened minume Treated Use Epoxy Polyester Includes 2 sets ground bearings hardened 3 de Fuselage Resin axle bolts spacers 5116 diameter bearing 114 Scale Model Fits 12 Fuselage Easy Use Instructions Included long wear Unbreakable Completely Fuelproof Fibre Glassing Producea Rock Hard Rubber Tread Will NOT Peel Offe Stores Flat Satin Smooth Surface Easy Painting Machined Polished Width Doubles Shop Use 3 yrds *1195 6 yrds $2195 No End Play Wobble STD 6 114 Scale $2095 9 yrds $3195 12 yrds $3995 81495 per set 12 $2795 12 $3196 2 $3895Send SASE Free Sample SAVE THIS AD OT ADVERTISE OFTENI NO SHIPPING CHARGES Marty Berr 84 Stonefield Trail ndsor 6074 192 Model Aviation No 657 Super Squire RO Trainer 35/40 2-stroke 53 4-stroke power spans 56 No 658 Shuriken Streak$225 CL Trainer uses 2-line Monoline control spans 17 t/2A power No659 Boom Box$400 FF Wakefield Rubber competition plane spans 54 No 193StIletto CL Stunt model McDonald winner 1976 1980 1982 PAl Wold Champs$ 375 No 262Crashmasfer CL Crash-proof trainer two sizos15/30 35/40 power$ 125 No 3101930 Fleet Biplane PC Sport Scale far 35/40 4-channel Wingspan 56 in. / scale Two sheets$ 625 No 314Drake II PC Ken Willarda flying boat far 3-channel 15-power Fly land renronable gear$ 375 No 326Taylor Cub PC Don Srulls Schoolyard-Scale 049s 2-3 channel Spans 50 in$ 350 No 332Zephyr PC Small 2-channel glider hand-launch tow thermal slope soaring$ 200 No 366Laser 200 PC Sport Scale replica championship Aerohafic flier Uses 40 power 4-5 channelTwo sheets$ 1075 No 4471/2A Miss America PC Old-Timer hA Texaco model 049 glow 2-channels$ 650 No 4604-40 RC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels 650 No 465Blue Max ii PC Fun-fly sportoter 40-size engines spans 52 Lightweight strecture S 700 No 533Cessna C-37 PC Schoolyard Scale famous 30s plane 049/10 power 2-ch spans 42 in$ 500 No 539Simitar Slow-MotIon 15 RC Tailless flying wing 15 engines spans 60 uses 3-ch PC$ 350 No 569Blectroafreak PC Electric aerobatic plane spans 44 uses 05 motorS 5 50 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-hobo built-up sorfacesS 400 No 572TR-260 RC Sport Scale Aerobafic plane 4-stroke 60/65 power spans 66 in$ 1100 No 576Serendipllyl ndoor EZ6 racord-holder spans line in$ 325 No 578schweizer 1-26B PC Quarter-scale Sailplane spans 125 Two plan sheets$ 1475 No 581Gee Model Y RC Golden Age Racer spans 72 1 scalel fur 60 power Three plan sheetsS tl75 No 586Snapdragon RC Fun-fly/sportoter 25/30 engines spans 45 in$ 600 No 568Marish PC Slope-Soaring Sailplane spans 41 in. uses 2 PC channelo$ 425 No 593Tayiorcraft PC Sport Scale light plane builds standard 2-placer clipped-wing air show stunter Spans eOhor 70 56 30/40 two-stroke 40/40 tour-otrake engine Two plan sheeto no dncumentatlonS 1000 No 595Sparrow PC Sportufer 25 engines spans 43 ro$ 650 No 596Coronet 150 PC-Assist Old-Timer enlarged 150% spans 72 uses 40-sire 4-ntmke/30-slze2-strokeS 650 No 601Nickel PC Sportoter engine 3 PC channels Spans 44 in$ 500 No 603Sparrow Hawk P-3D FF Competition robber-power plane won 87 Nato Spans 30 in$ 225 No 607Curtiss Seagull PC Giant Scale biplane spans 90 uses Quadra/Zenoah power Three plan sheets no doc$ 2400 No 609Taperwlng PC WA Pylon Pacer spans 29 Plan plus parts template sheet$ 600 No 610Profobypa PC Sport biplane spans 48 uses 45/2-cycle 60/4-cycle power$ 650 No 619Keith Rider R4 PP Scale golden Ago racer robber power spans 10 inS 300 No 620Gimlet 40 PC Sport/Puftem plane spans 6010 40/50 engine 12 oheets$ 1100 No 622Ouick P-3D PP Compehtion rubber-power P-30-class plane spans 30 in$ 325 No 623Henderson Longater PC Quarter-scale 1933 flinner spant 9gO/ 4-utreke 40/48 engine 13 plan uhf doc$ 1650 No 624Keteher Lark PC Quarter-scale homebuilt spans 6910 60/90 4-streke power 2 plan sheets no docS 1100 No 626Sweepee PC SportlPaoern canardo forward-swept wing spans 64 uses 40 power 2 plan sheets$ 1300 No 626Prime Cut PC Sport/Aerobatic plane spans 00 uses Quadra 35/40-sine power Two plan sheets$ 1300 No 630Original Fly Baby PC Old-Timer opono 72 uses 19/25 2-cycle 40 4-cycle power plan sheets$ 1150 No 632P-51H PP Lubomir Koutnys 5ncule Rubber model spans 23 in$ 325 No 633Orca PC Slope Sourer spans 75 uses twist-wing control Two-ch PC XMTR must have electronic mining$ 675 No 634SB2C Heildiver CL Profile sport/StonIer spans 54 35/40 power$ 575 No 635The Gambler PP Indoor Bostoniun rubber-power cabin plane spans 15% in$ 200 No 636Keytwo PC Tri-geored low-wing sporfoter 20125 puwer spans 44 0S 575 No 637A-B Shrtke PP Competition plane AMA Classes 6 15/23 power spans 60 I$ 675 No 638Owl Racer CL Scale Racer 049 power spans 20 in$ 225 No 639Skyvolt PC Tn-geared Electric aerobatic sportufer 05/15 power opens 50 in$ 6SO No 640BIrd 01 Pny CL AMA Pant Corlibaf plane 36 power spans 533/g in$ 550 No 641Lii Ole Reliable PC Old-Timer sport flier spans 50 engines$ 575 No 642Bipe 89 CL Partial plan upriatos deltults 48 nemiun 35cc power Spans 22 in$ 225 No 643Noctule IIB PP Batlike flying wing CO2 power spans 30 in$ 325 No 644Bellanca Columbia PC Schoolyard Scale 2 PC channels WA engine Wingspan 46 toS 575 No645Laird Solution CL Profile Scale biplane spans 36 25/35 power$ 575 No 646WInter Hawk PP Rubber-power Coupe dOiner compehtlon plane spans 47 in$ 375 No 647Coo Special CL Semiscale biplane WA engine spans 24 in$ 300 No 648Curtiss OC-2 PP SmIls Outdoor Gas Plying Scale biplane uses electric power spans 24 FurHiLine Mini-6 motor$ 325 No 649Thingamabob PC/CL Multimode trainer 25 gas 05 electric power spans SunS 475 No 65047/86 RC Special PC Aerehafic sport plane 40 power spans 611013 plan sheets $ 1075 No 651Consortium PC Hand-Launch Hi-Start Glider spans 60 in$ 650 No 652Der Fledermaus PC Low-wing sport plane 20/25 power spans 55 in$ 075 No 653Avanti CL Profile Sport Scale canard bboliner twin 049s spans 36 in$ 575 No 654Tamecat PC Trainor/sporfoter styled like P14 opans 66 40/61 power Pour plan sheetsS 1525 No 655Aatroatar PP AMA Clara A/B Gas plane spans 67 in. uses 325/350cc power$ 600 No 656XF13C CL Profile 15 Carrier plane spans 27ri in550 0 Os 0 OCtJ 0cJ s8 0 s S u0 0 08 no 80 co oE zeg 050 000 -o 0 crc -iz - t0e Os 000 0 C 0 0 - 0 0 8 0 c us 05 n 00 jnh 0 00 Os05 C0 0 0C 0 00 0 50 0 en 0 C Ec a-E CITY 00 us Circle numbers of plans YOU wish order best handling please include rel quests payment some other service plans order 193262310314326332386447 460465533539569570572576I o 81586588593595598601 07609610619620622623 624626628630632633634635 636637638639640641642643 644645646647648649650651I 0 652653654655656e657658659I Plan price includes first Class postage US delivery whiCh Air Mail over 300 miles orders non-US address iease add $250 Air Mali osta e handiin ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print CarefullyEnclosed $ _______________________ NAME _____________________________________________ AMA No ________________ STREETI couple things though should fixed explained page 196 May issue under specifications original aircraft balance point CG notation should have 47 tA ahead trailing edge main wing Maybe can explain canard airfoil model better way started out Eppler 203 cut foam main wing built-up canard structure ribs would have perpendicular leading edge pro duce airfoil shape Using foam did cutting 60 u angle wound up knows what airfoil con siderably thinner percent chord what started However being thinner helps make canard stall first desired now have good working drawings accurate 40%-scale Stratos same scale model shown article has clear canopy Id enjoy cor responding anyone interested build ing Ligeti Stratos long send pre-addressed stamped return envelope Stratos now has about 100 flights dependable maintenance free model Ive owned 18-ft-span powered Sailplane Ultimate Solitude mentioned article question mark time flies very nice 0S 61 four-stroker Its real floater 17 lb picture left Dennis Reichenbery right taken annual Jumbo event Marvin Reese 329 N Milstead Wichita KS 67212 at\-\r 8sG5 POUP HOOKY F5U3rOeUe 5 J 5 L iLF4i7LIIYRNSES P0 POX 8tOflP800IflOtknNSt7WHen SPOt ttHSHl 194 Model Aviation Bob Fiorenze Hobby Center Inc Dealer Yellow Aircraft UPS Orders Shipped Daily Now Available Feancover Covering Manerial visit Oar Showroom 135 mis Disney WarIdI NEW Custom Bulldin9 Service 420 Wean SR 43414071327-6352 Winter Springs FL 32709Fax 14071327-7148 LSTATEZIP _____________________________ [v32][b-1-10-1-10]] VEND MOUNTS88n888 Fall anO rust proof tOrso Con PO8 THE VIBRATION KILLER sotarlon 05 120 snalne. P8tH tirtuItn tirewati engine /880 mount TnpcaltlsratlonroOuctlvn ot ro5 Coo as-n nn Co conalete nnoufltH solota point rabound,,, e80ttOrs US/na lflStuCtIOnC88 585 to. send tnore ohmic monan ordor ner us aaa psoasons FO 500 Oseas SOSAsOOA FL seaaa ero 3700002 FL rHHdsnte 72* euto tat trosMAmoN sand 555*
Edition: Model Aviation - 1990/07
Page Numbers: 6, 8, 10, 12, 192, 194
rs et4 cutor letters will carefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Di Reston VA 22090 FT Vagabond Enclosed find picture old Frei Flight Vagabond 6-ft-span mode used Ohlsson 60 power Its las flight took place 40 years ago calm clear warm day nose dived 2000 feet concrete sur made spectacular crash Up time 21 absolutely flaw less flights day still wonder wha could have caused crash Could some please enlighten Bill Spathiat 2727 Lawtherwood Ct Dallas TX 7521Z suspicion something shifted Pei haps rubberband gave out resulting changed balance point incidence settin Any other ideas 1991 beyond major con cern seems 1991 has develope demon will swoop down de stroy miniature airplanes warn ing facts say far trut use some commonsense guidelinet As modelers seem bombarde kinds gadgets will enhanc modeling capabilities Some goo needed others may frill such gadget beeping fre quency control pin board seen Ma 1990 issue Model Aviation avail able Custom Tronics Texas confused AMA sticke stations California Custom Electronics Ive flying RC since 1967 ing electronics technician have enjoye growth RC equipment Today mor Continued page 6 Model Aviation Frequency Control Satisfaction Guaranteedi EAv HINEEZZ SH-710 Pkg 24- $295 THE HIGH-TECH HINGE DESIGNED FOR THE CYANOACRYLATE AGE Easier install other hinge No gouging picking messy epoxies Simply cut single knife slot hinge slide hinges place apply few drops favorite CA glue youre done SUPER FAST SUPER EASY SUPER STRONG 74e e4t /1a9e4 e 6aa c SIG MFG CO INC.401-7 So Front St.Montezuma IA 50171 23-5154 SPORT/PATTERN FLYING FOR ENGINE OR MOTOR SIMPLE TO BUILD TO FLY DESIGNS Featuring extensive pre fabrication including pre cut fuse lage sides tail feathers accurately die machine cut parts HAMMER 20 Pocket size pattern ship 20-30 engines 25 size electric motors Wing span 50 400 sq area 31/24 lbs flying weight Symmet rical airfoil tapered wing generous side area superb perf mance Has unique simplicity design quick accurate con struction 28 KITS TO CHOOSE FROM IPAVEY675 TOWER LANE YSTEMSWEST CHESTER PA 19380 ORPORATION 215-430-8645 modelers flying RC ever before making acquisition 50 RC channels 20 kI-Iz spacing very much needed channels may work well given area now have RC channels choose last several years have learned some new terms like 31M 2IMD lIM lIM later Some interferenc beyond control Wha can club help prolong model life club can have frequency sur vey done flying site using scannei receiver will let club know what frequencies should avoided Second club can become radio wise Ra dio wise knowing what 31M 2IMD anc lIM isand what to minimize ef fects Lets review what phenomenon known 31M occurs two transmitters operating different frequency generate interfering signal third frequency right another RC channel An important factor much difference between control RF power transmitter 31M RF power must present before interferencc can affect receiver attendance major Pattern meet used ICOM-7000 receives observed 31M action Showing fellow modeler AMA President Don Lowe both amazed see 31M RC channel watch pilot turn transmitter channel pro ceed fly unaffected Hmm Receivers must work designed course some better others pilots ha no interference problems during wholi three-day meetand receivers usi dual-conversion narrow-band de signs However transmitters gob stickers indicating narrow-ban units secret pilot spacing Thi four pilot stations separated thereb reducing 31M-generated RF power enougl affect same-channel receivers case able reject inter fering signal obey controlling trans mitter system spacing pilot sta tions along assigned frequencies t station take care adjacent-channe interference solves problem Next lets deal 2IMD Second Order Intermodulation Distortion Man wideband receivers using single-conver sion superheterodyne design suscepti ble type interference interfer ence occurs two transmitters use op erate channels frequency sepa rated approximately receivers inter mediate frequency other words avoic simultaneous use RC channels 2 number apart instance using th AMAs Interim Alternate Plan 1 May Mod el Aviation page 122 along narrow band transmitters will solve Now last type interference lIM phenomenon occurs whes Continued page h 8 Model Aviation HAMMER 40 Big brother Hammer 20 attributes- plus larger size wing span 60 620 sq area 4-5 lbs flying weight 35-45 two-cycle 40-60 four-cycle engines 40 size motors Does pattern manuevers can still fly like docile trainer CESSNA 150 real pretty sport scale copy famous trainer 20-30 twocycle 30-40 four-cycle engines 25 size electric motors Wing span 50 410 sq area 3l/24 lbs flying weight semi-symmetrical airfoil optional flaps wide speed range realistic performance ones airplane seems flying very uncontrolled manner due controlling influence brain know Pilot er ror have experienced Pilot error just dumb thumbs giving up elevator making highspeed inverted low pass includes ques tions like Did fully charge batter ies Did check correct direc tion control movement Did check c etc Also included lIM guy turns transmitter frequency youre flying As RC equipment becomes reliable old lIM begins loom biggest problem above systems frequency control have tried proved times fly-ins contests currently being used home RC club Prop Nuts Highland TX have 31M 2IMD problems although occasion old lIM gets us club has questions fre quency problems contact AMA dis trict frequency coordinator names ad dresses VP column headings AMA News section Im member AMA Frequency Committee will glad help too further frequency con trol guidelines see May 1990 MA page 120 Larry Dungan Box 1254 Pasadena TX 77501 Continued page 12 10 Model Aviation Supe Pos& Pojiswk 40. FREE CATALOG jfl 04 687-1702 K&S METAL AJuminumlBrasslCopper Tubing & Shapes Music Wire sTools Soldering Irons Silk Silk Span Finishing Materials 4 catalog Pwudwet A63A WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY SALSA SHUTS 36 45 30 1633 332240 18 243 316249 14 256 132337 120337 1 1633749 31 33234458 37 18 35471 45 31636282 99 14 373 95 61 916385110 3S 388924 71 12 3110155 34 3169191 916459 7648 332470 9456 98 480106 66 31649312270 14 4110134 84 38 65225139 12 4225261 MATCHED SHEETS 42 3324100 84108 3164120 144131 SAL SAS11CKS 364 1161409 1 163810 1161214 3321410 3323812 3321216 191808 18.14II16 18381218 19121024 3163161116 316381720 316122230 14141624 14381926 14122130 14343444 14I4055 5165167128 38382737 3S123246 39344255 3815270 12123652 12344662 1215878 58584869 34346790 WHAT 00 CALL THE BEST SHEETINGTwerskins MATERIAL FOR FOAM WING CORES CHECK THESE FEATURESGyro, 0 yha fyllosong color Superyrsroglfl ll rOoWaco 04 0uyrr 505 CaybI,y Ey loamPolar 550, 001 pr sq n Ompryur,Oabyy0SSO9 01, Smofl h4fl gloss lflOSun IIow Supr,r ra,saooa O n5r0 luI Suporror rss,no 5c us,tOg Eay tO apply LOw low 0505 Cl /64 5,, Phone 3093423009 I//N6MF6t FAX 300-342-3014 OyOly50 Oraoo,aornonno,rooo,,5oon uausooynooloynoo uao uuuo,ooaonuo un,$4flpersheet SEND 9400 FOR CATALOGllnos 0,Onl 0440 1 /Oo sales 0a WING MIg 306 E Simmons Galesburg IL 61401 & & MODEL BUILDING 7SERVICE RADIO CONTPOL P1OOUCTS carry full Iinof Byron Originals Bdb Parkerson Tom Cook Bob Violet products COD Orders Accepted 718 983-9735 328 WATCHOGUE ROAD STATEN 11AM 0 NY 10314 w IALSA TRIANGLES 36 4425 383630 235 33445 55 BALSA PLANKS 36 90 257 329 4293 11/23302 11/24396 22231 23336 24476 33615 34715 TAPERED SHEETS36 14265 14385 36268 38398 123120 About Uncle SASS WOOD4 311631626 3/1611430 31163838 31611246 3163460 141442 143849 143480 3/83860 381270 383400 1211290 1234100 BUNDLE DEALS 30-116336688 201164361035 20332336860 15332436955 1618336735 1018436895 19316336920 10316 438839 10-14336655 1014438930 1039336870 538436600 512336540 INSTANT GLUE 5324361080 1 75ok 298 10332448885 ba TOrn 298 5184 48500 2, Thck 650 5316448600 2, 150 550 514448645 TRAILING EDGE 36 14132 51611439 3811246 12270 wrote poem about uncle best friend Perhaps some readers would enjoy Maybe some RC nuts too RC Nut always know whereabouts field no doubt flies plane day nothing ever keeps him away cold outside Warm clothes donned stride snow around Skis used get off ground plane does crash fixes up flash MonoKote iron instant glue makes look just like new works straight through night ready next flight Gloria Shaffer Duanesburg NY Bell-Anchor intriguing exquisite piece writing artistry Ive ever privi leged conned Bell-Anchor April 1990 issue Scratch Biltright commendeda super con artist Ole dummy sat down thought hed like build Bell-Anchor Whoa Continued page 192 SPRUCE TRIANGL ES 36 38 7 121284 34 34 5 PL VUIRCII 48 3132xt2700 1I8x12776 3I16x12626 114x12626 3/8x12726 112xt2900 GROOVED LG PII3UNTS lZIvacIme 3834/18/40 3834/532140 I234/316/45 AT LAST An Effective High Tech Engine Cleaner R/O Engines Just Brush & Carbons Gone-Guaranteed ONLY $695 CA residents add 725% tax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 Satisfaction Guaranteed Direct Only CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa HARD MAPLE 1 4 38 38 38 38 12 38 34 12 40 45 50 99 66 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 364 18 181725 SINCH DOWELS36 18 09 31611 1414 51625 3/832 18 18 18 3/8 316316 14 14 14 38 14 12 38 38 3812 12 2 3/4 LIGHT 4-6 LB WOOD36 1/22362 1/20362 1/18382 3/22374 1/8391 3/183105 1/43125 3/83158 1/23186 3/43300 13425 1/18498 3/324118 1/84135 3/164157 1/44189 3184285 1/24386 LONE STAR EPOXY81 BALSA HOT LINE9o LI895LITIPLY4 1/8x6176 Cull 806 745 6394 lOem6 pmCen8relTumeSn,598115x12360 30n,n599 114x6276 LONE STAR MODELS114x12560 Ccnt48 Handling Charge pay UPS Add $350 COD *400 exfra PP APO FPO 1623 57tl St Lubbock TX 79412Wan6jI M4jr pesonel checks orCOD6I%8axinTexaeUScurrencyonly Minimum Wood Order $1000 3026 2232 2838 3490 4055 4560 4969 6077 6688 7597 SPLYWIMCN48 t/64x12536 1132x12475 1116x12476 lIBxt2496 Matched Performance System TOP PERFORMANCE K&B ENGINES AkpksleManse K&B FUELS186 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE 186 FIBERGLASS CLOTH 180 Micro-Balloons TILLER 185 SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER 185 SUPER POXY PAINT K&B MIXING CUPS 12 Model Aviation DEALERS INQUIRES WELCOME Bill Etfinger * says OnlyPlane Pastern0 Seto give coo asserted designs voc want have selected best clasoic designs time coo choose patterns part important eacluelve feature Ducted Fans Navy F4D-1 Skyray ecZIIIIIIIeLsF 020 go 1 eoateOeIength 44h wingspan 41PtO oh 6/C eoribte Landing Gear soste ength 3-S oh CIC eK-20 2 One-Third Scale Piper Tn-Pacer PA-22 16-319 wing seen eq wing area 20 3g cid engines Por4-5 oh eic ao t2 lbs el-lie acerati coach ft 1/3 Scale Piper Cub J-3 110 wing span ength 2000sqlnwwgarss doheiC 20 ao old eegioee RC35 2$2905 Quarter Scale WW SE-SA go% span sq wing area 70 22 engines SCOS 7 5 Quarter Scale WWI Fokker D-VIINew SPAD CXIII 79Yewing span2125 sq wing area t3to 31 ettgines Copahie flyer-it captures imagination RCOS-0 0 00 wrvyupav sq inlog ama a90 2hcrd evolve SOchlt lbs FOKKER DR-i TRIPLANEo OCOS ht24 95 72 wing span sat intIIIL.a.Full cantilever wings no flying wired Removal enolno volt Shockwing area 70 tot 50 esgineuot-- mouvted landing gear Oaluaiplywood fuselage huilt-up hieso wing RCO54 $2405 N r bitt Effinger Poonding Member AMA OFFS Hall Famer SOPWITH CAMEL F1Prices Conipiete plans cub asservely ft darailed p0ev lists PLEASE ADD 44 wing span 2100 sq iv0205 tor sbppng Imalog tahel Sour 1990 PIne Sets b Ovhuic Proc wing area 11 lbs wia SIC ofundable cv t 5 Orde wood & balsa cansnuvnon overCTECHNICAL 05 sq ft drawingsWESERVICES lOCOS t t 5 Rt 1 Box2SOOA Santa Rosa Beach FL32459 r MO WNG know bl advancesix weeksOF ADDRESS LET US KNOW WHERE YOU ARE GOINGWhen move please let us appropriate box mail Chk quwed change address Attach current MA mailing label boxenclose payment E NEW SUBSCRIPTION IappropriafOflin 1810 Samuel Morse Dr Reston VA 22090 Non-AMA-member subscription rates $1800 12 months US addresses US Schools $900 Libraries $1350 elsewhere including Canada Mexico $2900 Payment must check money order US funds drawn US bank NameI AddressI City/State_______________ ZIP ____I Model Aviation 1810 Samuel Morse Dr Reston VA 22090I complete virtually identical models hang ing ceiling immediate interest classrooms dedicated photography playing musical instruments static dis play models various types dance host other subjects housed same building suppose centers could viewed great places drop chil dren off after work possibly some par ents utilize evening-care centers well think however enjoy ment places sure theres also undertone serious ness offer opportunity excel society places great emphasis its youth does succeed-ordo-something-else basis Most us have seenusually courtesy TV coverage international sporting eventhow So viet system selects very few promising youngsters among thousands thou sands intensive training say gymnas tics effort bit laid-back aeromodeling principle same Competition Soviet national contests must very intense indeed Russians perceive modeling dif ferent light us Americans view hobby Soviets view sport treat such shall soon see myself trip Leningrad such terrific fun Bob Carver wife Diana planning attend Cup Leningrad CL contest mid-May Carl Dodge FAL Speed Bob Whitley FAI Precision Aerobatics Tim Gillott/Jeff Hollfelder FAI Team Race hope join us As enticement US participation Soviets have added /2A Combat AMA Combat list scheduled events got could Carverwho sponsors annual Bladder Grabber largest US Fast Combat meetsand resist being among first fly Bad Boy Combat right Vladimir Le nins front yard Letters Editor Continued page 12 cant done says hesorry buster youve conned Nice job Ill remember next con published A G Ronay Hoffman Estates IL Ligeti Stratos Its easy understand Model Avia tion well liked took pretty good article made greatthanks no small part Bob Banka Scale Model Re search some great photos full-size Stratos Continued page 194 SAFE FLYING IS NO ACCIDENT PROMISE* Mew 42 wkie * * low Product *Full Satlstactlou Full RefundSame Lower Price 58 oz GLASS CLOTH FORM 10500Compare Prices Sport-- PLAIN CRADLE2 ide Mirror Wheels h...-i~ Same Low Price 2/e Hardened minume Treated Use Epoxy Polyester Includes 2 sets ground bearings hardened 3 de Fuselage Resin axle bolts spacers 5116 diameter bearing 114 Scale Model Fits 12 Fuselage Easy Use Instructions Included long wear Unbreakable Completely Fuelproof Fibre Glassing Producea Rock Hard Rubber Tread Will NOT Peel Offe Stores Flat Satin Smooth Surface Easy Painting Machined Polished Width Doubles Shop Use 3 yrds *1195 6 yrds $2195 No End Play Wobble STD 6 114 Scale $2095 9 yrds $3195 12 yrds $3995 81495 per set 12 $2795 12 $3196 2 $3895Send SASE Free Sample SAVE THIS AD OT ADVERTISE OFTENI NO SHIPPING CHARGES Marty Berr 84 Stonefield Trail ndsor 6074 192 Model Aviation No 657 Super Squire RO Trainer 35/40 2-stroke 53 4-stroke power spans 56 No 658 Shuriken Streak$225 CL Trainer uses 2-line Monoline control spans 17 t/2A power No659 Boom Box$400 FF Wakefield Rubber competition plane spans 54 No 193StIletto CL Stunt model McDonald winner 1976 1980 1982 PAl Wold Champs$ 375 No 262Crashmasfer CL Crash-proof trainer two sizos15/30 35/40 power$ 125 No 3101930 Fleet Biplane PC Sport Scale far 35/40 4-channel Wingspan 56 in. / scale Two sheets$ 625 No 314Drake II PC Ken Willarda flying boat far 3-channel 15-power Fly land renronable gear$ 375 No 326Taylor Cub PC Don Srulls Schoolyard-Scale 049s 2-3 channel Spans 50 in$ 350 No 332Zephyr PC Small 2-channel glider hand-launch tow thermal slope soaring$ 200 No 366Laser 200 PC Sport Scale replica championship Aerohafic flier Uses 40 power 4-5 channelTwo sheets$ 1075 No 4471/2A Miss America PC Old-Timer hA Texaco model 049 glow 2-channels$ 650 No 4604-40 RC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels 650 No 465Blue Max ii PC Fun-fly sportoter 40-size engines spans 52 Lightweight strecture S 700 No 533Cessna C-37 PC Schoolyard Scale famous 30s plane 049/10 power 2-ch spans 42 in$ 500 No 539Simitar Slow-MotIon 15 RC Tailless flying wing 15 engines spans 60 uses 3-ch PC$ 350 No 569Blectroafreak PC Electric aerobatic plane spans 44 uses 05 motorS 5 50 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-hobo built-up sorfacesS 400 No 572TR-260 RC Sport Scale Aerobafic plane 4-stroke 60/65 power spans 66 in$ 1100 No 576Serendipllyl ndoor EZ6 racord-holder spans line in$ 325 No 578schweizer 1-26B PC Quarter-scale Sailplane spans 125 Two plan sheets$ 1475 No 581Gee Model Y RC Golden Age Racer spans 72 1 scalel fur 60 power Three plan sheetsS tl75 No 586Snapdragon RC Fun-fly/sportoter 25/30 engines spans 45 in$ 600 No 568Marish PC Slope-Soaring Sailplane spans 41 in. uses 2 PC channelo$ 425 No 593Tayiorcraft PC Sport Scale light plane builds standard 2-placer clipped-wing air show stunter Spans eOhor 70 56 30/40 two-stroke 40/40 tour-otrake engine Two plan sheeto no dncumentatlonS 1000 No 595Sparrow PC Sportufer 25 engines spans 43 ro$ 650 No 596Coronet 150 PC-Assist Old-Timer enlarged 150% spans 72 uses 40-sire 4-ntmke/30-slze2-strokeS 650 No 601Nickel PC Sportoter engine 3 PC channels Spans 44 in$ 500 No 603Sparrow Hawk P-3D FF Competition robber-power plane won 87 Nato Spans 30 in$ 225 No 607Curtiss Seagull PC Giant Scale biplane spans 90 uses Quadra/Zenoah power Three plan sheets no doc$ 2400 No 609Taperwlng PC WA Pylon Pacer spans 29 Plan plus parts template sheet$ 600 No 610Profobypa PC Sport biplane spans 48 uses 45/2-cycle 60/4-cycle power$ 650 No 619Keith Rider R4 PP Scale golden Ago racer robber power spans 10 inS 300 No 620Gimlet 40 PC Sport/Puftem plane spans 6010 40/50 engine 12 oheets$ 1100 No 622Ouick P-3D PP Compehtion rubber-power P-30-class plane spans 30 in$ 325 No 623Henderson Longater PC Quarter-scale 1933 flinner spant 9gO/ 4-utreke 40/48 engine 13 plan uhf doc$ 1650 No 624Keteher Lark PC Quarter-scale homebuilt spans 6910 60/90 4-streke power 2 plan sheets no docS 1100 No 626Sweepee PC SportlPaoern canardo forward-swept wing spans 64 uses 40 power 2 plan sheets$ 1300 No 626Prime Cut PC Sport/Aerobatic plane spans 00 uses Quadra 35/40-sine power Two plan sheets$ 1300 No 630Original Fly Baby PC Old-Timer opono 72 uses 19/25 2-cycle 40 4-cycle power plan sheets$ 1150 No 632P-51H PP Lubomir Koutnys 5ncule Rubber model spans 23 in$ 325 No 633Orca PC Slope Sourer spans 75 uses twist-wing control Two-ch PC XMTR must have electronic mining$ 675 No 634SB2C Heildiver CL Profile sport/StonIer spans 54 35/40 power$ 575 No 635The Gambler PP Indoor Bostoniun rubber-power cabin plane spans 15% in$ 200 No 636Keytwo PC Tri-geored low-wing sporfoter 20125 puwer spans 44 0S 575 No 637A-B Shrtke PP Competition plane AMA Classes 6 15/23 power spans 60 I$ 675 No 638Owl Racer CL Scale Racer 049 power spans 20 in$ 225 No 639Skyvolt PC Tn-geared Electric aerobatic sportufer 05/15 power opens 50 in$ 6SO No 640BIrd 01 Pny CL AMA Pant Corlibaf plane 36 power spans 533/g in$ 550 No 641Lii Ole Reliable PC Old-Timer sport flier spans 50 engines$ 575 No 642Bipe 89 CL Partial plan upriatos deltults 48 nemiun 35cc power Spans 22 in$ 225 No 643Noctule IIB PP Batlike flying wing CO2 power spans 30 in$ 325 No 644Bellanca Columbia PC Schoolyard Scale 2 PC channels WA engine Wingspan 46 toS 575 No645Laird Solution CL Profile Scale biplane spans 36 25/35 power$ 575 No 646WInter Hawk PP Rubber-power Coupe dOiner compehtlon plane spans 47 in$ 375 No 647Coo Special CL Semiscale biplane WA engine spans 24 in$ 300 No 648Curtiss OC-2 PP SmIls Outdoor Gas Plying Scale biplane uses electric power spans 24 FurHiLine Mini-6 motor$ 325 No 649Thingamabob PC/CL Multimode trainer 25 gas 05 electric power spans SunS 475 No 65047/86 RC Special PC Aerehafic sport plane 40 power spans 611013 plan sheets $ 1075 No 651Consortium PC Hand-Launch Hi-Start Glider spans 60 in$ 650 No 652Der Fledermaus PC Low-wing sport plane 20/25 power spans 55 in$ 075 No 653Avanti CL Profile Sport Scale canard bboliner twin 049s spans 36 in$ 575 No 654Tamecat PC Trainor/sporfoter styled like P14 opans 66 40/61 power Pour plan sheetsS 1525 No 655Aatroatar PP AMA Clara A/B Gas plane spans 67 in. uses 325/350cc power$ 600 No 656XF13C CL Profile 15 Carrier plane spans 27ri in550 0 Os 0 OCtJ 0cJ s8 0 s S u0 0 08 no 80 co oE zeg 050 000 -o 0 crc -iz - t0e Os 000 0 C 0 0 - 0 0 8 0 c us 05 n 00 jnh 0 00 Os05 C0 0 0C 0 00 0 50 0 en 0 C Ec a-E CITY 00 us Circle numbers of plans YOU wish order best handling please include rel quests payment some other service plans order 193262310314326332386447 460465533539569570572576I o 81586588593595598601 07609610619620622623 624626628630632633634635 636637638639640641642643 644645646647648649650651I 0 652653654655656e657658659I Plan price includes first Class postage US delivery whiCh Air Mail over 300 miles orders non-US address iease add $250 Air Mali osta e handiin ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print CarefullyEnclosed $ _______________________ NAME _____________________________________________ AMA No ________________ STREETI couple things though should fixed explained page 196 May issue under specifications original aircraft balance point CG notation should have 47 tA ahead trailing edge main wing Maybe can explain canard airfoil model better way started out Eppler 203 cut foam main wing built-up canard structure ribs would have perpendicular leading edge pro duce airfoil shape Using foam did cutting 60 u angle wound up knows what airfoil con siderably thinner percent chord what started However being thinner helps make canard stall first desired now have good working drawings accurate 40%-scale Stratos same scale model shown article has clear canopy Id enjoy cor responding anyone interested build ing Ligeti Stratos long send pre-addressed stamped return envelope Stratos now has about 100 flights dependable maintenance free model Ive owned 18-ft-span powered Sailplane Ultimate Solitude mentioned article question mark time flies very nice 0S 61 four-stroker Its real floater 17 lb picture left Dennis Reichenbery right taken annual Jumbo event Marvin Reese 329 N Milstead Wichita KS 67212 at\-\r 8sG5 POUP HOOKY F5U3rOeUe 5 J 5 L iLF4i7LIIYRNSES P0 POX 8tOflP800IflOtknNSt7WHen SPOt ttHSHl 194 Model Aviation Bob Fiorenze Hobby Center Inc Dealer Yellow Aircraft UPS Orders Shipped Daily Now Available Feancover Covering Manerial visit Oar Showroom 135 mis Disney WarIdI NEW Custom Bulldin9 Service 420 Wean SR 43414071327-6352 Winter Springs FL 32709Fax 14071327-7148 LSTATEZIP _____________________________ [v32][b-1-10-1-10]] VEND MOUNTS88n888 Fall anO rust proof tOrso Con PO8 THE VIBRATION KILLER sotarlon 05 120 snalne. P8tH tirtuItn tirewati engine /880 mount TnpcaltlsratlonroOuctlvn ot ro5 Coo as-n nn Co conalete nnoufltH solota point rabound,,, e80ttOrs US/na lflStuCtIOnC88 585 to. send tnore ohmic monan ordor ner us aaa psoasons FO 500 Oseas SOSAsOOA FL seaaa ero 3700002 FL rHHdsnte 72* euto tat trosMAmoN sand 555*
Edition: Model Aviation - 1990/07
Page Numbers: 6, 8, 10, 12, 192, 194
rs et4 cutor letters will carefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Di Reston VA 22090 FT Vagabond Enclosed find picture old Frei Flight Vagabond 6-ft-span mode used Ohlsson 60 power Its las flight took place 40 years ago calm clear warm day nose dived 2000 feet concrete sur made spectacular crash Up time 21 absolutely flaw less flights day still wonder wha could have caused crash Could some please enlighten Bill Spathiat 2727 Lawtherwood Ct Dallas TX 7521Z suspicion something shifted Pei haps rubberband gave out resulting changed balance point incidence settin Any other ideas 1991 beyond major con cern seems 1991 has develope demon will swoop down de stroy miniature airplanes warn ing facts say far trut use some commonsense guidelinet As modelers seem bombarde kinds gadgets will enhanc modeling capabilities Some goo needed others may frill such gadget beeping fre quency control pin board seen Ma 1990 issue Model Aviation avail able Custom Tronics Texas confused AMA sticke stations California Custom Electronics Ive flying RC since 1967 ing electronics technician have enjoye growth RC equipment Today mor Continued page 6 Model Aviation Frequency Control Satisfaction Guaranteedi EAv HINEEZZ SH-710 Pkg 24- $295 THE HIGH-TECH HINGE DESIGNED FOR THE CYANOACRYLATE AGE Easier install other hinge No gouging picking messy epoxies Simply cut single knife slot hinge slide hinges place apply few drops favorite CA glue youre done SUPER FAST SUPER EASY SUPER STRONG 74e e4t /1a9e4 e 6aa c SIG MFG CO INC.401-7 So Front St.Montezuma IA 50171 23-5154 SPORT/PATTERN FLYING FOR ENGINE OR MOTOR SIMPLE TO BUILD TO FLY DESIGNS Featuring extensive pre fabrication including pre cut fuse lage sides tail feathers accurately die machine cut parts HAMMER 20 Pocket size pattern ship 20-30 engines 25 size electric motors Wing span 50 400 sq area 31/24 lbs flying weight Symmet rical airfoil tapered wing generous side area superb perf mance Has unique simplicity design quick accurate con struction 28 KITS TO CHOOSE FROM IPAVEY675 TOWER LANE YSTEMSWEST CHESTER PA 19380 ORPORATION 215-430-8645 modelers flying RC ever before making acquisition 50 RC channels 20 kI-Iz spacing very much needed channels may work well given area now have RC channels choose last several years have learned some new terms like 31M 2IMD lIM lIM later Some interferenc beyond control Wha can club help prolong model life club can have frequency sur vey done flying site using scannei receiver will let club know what frequencies should avoided Second club can become radio wise Ra dio wise knowing what 31M 2IMD anc lIM isand what to minimize ef fects Lets review what phenomenon known 31M occurs two transmitters operating different frequency generate interfering signal third frequency right another RC channel An important factor much difference between control RF power transmitter 31M RF power must present before interferencc can affect receiver attendance major Pattern meet used ICOM-7000 receives observed 31M action Showing fellow modeler AMA President Don Lowe both amazed see 31M RC channel watch pilot turn transmitter channel pro ceed fly unaffected Hmm Receivers must work designed course some better others pilots ha no interference problems during wholi three-day meetand receivers usi dual-conversion narrow-band de signs However transmitters gob stickers indicating narrow-ban units secret pilot spacing Thi four pilot stations separated thereb reducing 31M-generated RF power enougl affect same-channel receivers case able reject inter fering signal obey controlling trans mitter system spacing pilot sta tions along assigned frequencies t station take care adjacent-channe interference solves problem Next lets deal 2IMD Second Order Intermodulation Distortion Man wideband receivers using single-conver sion superheterodyne design suscepti ble type interference interfer ence occurs two transmitters use op erate channels frequency sepa rated approximately receivers inter mediate frequency other words avoic simultaneous use RC channels 2 number apart instance using th AMAs Interim Alternate Plan 1 May Mod el Aviation page 122 along narrow band transmitters will solve Now last type interference lIM phenomenon occurs whes Continued page h 8 Model Aviation HAMMER 40 Big brother Hammer 20 attributes- plus larger size wing span 60 620 sq area 4-5 lbs flying weight 35-45 two-cycle 40-60 four-cycle engines 40 size motors Does pattern manuevers can still fly like docile trainer CESSNA 150 real pretty sport scale copy famous trainer 20-30 twocycle 30-40 four-cycle engines 25 size electric motors Wing span 50 410 sq area 3l/24 lbs flying weight semi-symmetrical airfoil optional flaps wide speed range realistic performance ones airplane seems flying very uncontrolled manner due controlling influence brain know Pilot er ror have experienced Pilot error just dumb thumbs giving up elevator making highspeed inverted low pass includes ques tions like Did fully charge batter ies Did check correct direc tion control movement Did check c etc Also included lIM guy turns transmitter frequency youre flying As RC equipment becomes reliable old lIM begins loom biggest problem above systems frequency control have tried proved times fly-ins contests currently being used home RC club Prop Nuts Highland TX have 31M 2IMD problems although occasion old lIM gets us club has questions fre quency problems contact AMA dis trict frequency coordinator names ad dresses VP column headings AMA News section Im member AMA Frequency Committee will glad help too further frequency con trol guidelines see May 1990 MA page 120 Larry Dungan Box 1254 Pasadena TX 77501 Continued page 12 10 Model Aviation Supe Pos& Pojiswk 40. FREE CATALOG jfl 04 687-1702 K&S METAL AJuminumlBrasslCopper Tubing & Shapes Music Wire sTools Soldering Irons Silk Silk Span Finishing Materials 4 catalog Pwudwet A63A WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY SALSA SHUTS 36 45 30 1633 332240 18 243 316249 14 256 132337 120337 1 1633749 31 33234458 37 18 35471 45 31636282 99 14 373 95 61 916385110 3S 388924 71 12 3110155 34 3169191 916459 7648 332470 9456 98 480106 66 31649312270 14 4110134 84 38 65225139 12 4225261 MATCHED SHEETS 42 3324100 84108 3164120 144131 SAL SAS11CKS 364 1161409 1 163810 1161214 3321410 3323812 3321216 191808 18.14II16 18381218 19121024 3163161116 316381720 316122230 14141624 14381926 14122130 14343444 14I4055 5165167128 38382737 3S123246 39344255 3815270 12123652 12344662 1215878 58584869 34346790 WHAT 00 CALL THE BEST SHEETINGTwerskins MATERIAL FOR FOAM WING CORES CHECK THESE FEATURESGyro, 0 yha fyllosong color Superyrsroglfl ll rOoWaco 04 0uyrr 505 CaybI,y Ey loamPolar 550, 001 pr sq n Ompryur,Oabyy0SSO9 01, Smofl h4fl gloss lflOSun IIow Supr,r ra,saooa O n5r0 luI Suporror rss,no 5c us,tOg Eay tO apply LOw low 0505 Cl /64 5,, Phone 3093423009 I//N6MF6t FAX 300-342-3014 OyOly50 Oraoo,aornonno,rooo,,5oon uausooynooloynoo uao uuuo,ooaonuo un,$4flpersheet SEND 9400 FOR CATALOGllnos 0,Onl 0440 1 /Oo sales 0a WING MIg 306 E Simmons Galesburg IL 61401 & & MODEL BUILDING 7SERVICE RADIO CONTPOL P1OOUCTS carry full Iinof Byron Originals Bdb Parkerson Tom Cook Bob Violet products COD Orders Accepted 718 983-9735 328 WATCHOGUE ROAD STATEN 11AM 0 NY 10314 w IALSA TRIANGLES 36 4425 383630 235 33445 55 BALSA PLANKS 36 90 257 329 4293 11/23302 11/24396 22231 23336 24476 33615 34715 TAPERED SHEETS36 14265 14385 36268 38398 123120 About Uncle SASS WOOD4 311631626 3/1611430 31163838 31611246 3163460 141442 143849 143480 3/83860 381270 383400 1211290 1234100 BUNDLE DEALS 30-116336688 201164361035 20332336860 15332436955 1618336735 1018436895 19316336920 10316 438839 10-14336655 1014438930 1039336870 538436600 512336540 INSTANT GLUE 5324361080 1 75ok 298 10332448885 ba TOrn 298 5184 48500 2, Thck 650 5316448600 2, 150 550 514448645 TRAILING EDGE 36 14132 51611439 3811246 12270 wrote poem about uncle best friend Perhaps some readers would enjoy Maybe some RC nuts too RC Nut always know whereabouts field no doubt flies plane day nothing ever keeps him away cold outside Warm clothes donned stride snow around Skis used get off ground plane does crash fixes up flash MonoKote iron instant glue makes look just like new works straight through night ready next flight Gloria Shaffer Duanesburg NY Bell-Anchor intriguing exquisite piece writing artistry Ive ever privi leged conned Bell-Anchor April 1990 issue Scratch Biltright commendeda super con artist Ole dummy sat down thought hed like build Bell-Anchor Whoa Continued page 192 SPRUCE TRIANGL ES 36 38 7 121284 34 34 5 PL VUIRCII 48 3132xt2700 1I8x12776 3I16x12626 114x12626 3/8x12726 112xt2900 GROOVED LG PII3UNTS lZIvacIme 3834/18/40 3834/532140 I234/316/45 AT LAST An Effective High Tech Engine Cleaner R/O Engines Just Brush & Carbons Gone-Guaranteed ONLY $695 CA residents add 725% tax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 Satisfaction Guaranteed Direct Only CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa HARD MAPLE 1 4 38 38 38 38 12 38 34 12 40 45 50 99 66 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 364 18 181725 SINCH DOWELS36 18 09 31611 1414 51625 3/832 18 18 18 3/8 316316 14 14 14 38 14 12 38 38 3812 12 2 3/4 LIGHT 4-6 LB WOOD36 1/22362 1/20362 1/18382 3/22374 1/8391 3/183105 1/43125 3/83158 1/23186 3/43300 13425 1/18498 3/324118 1/84135 3/164157 1/44189 3184285 1/24386 LONE STAR EPOXY81 BALSA HOT LINE9o LI895LITIPLY4 1/8x6176 Cull 806 745 6394 lOem6 pmCen8relTumeSn,598115x12360 30n,n599 114x6276 LONE STAR MODELS114x12560 Ccnt48 Handling Charge pay UPS Add $350 COD *400 exfra PP APO FPO 1623 57tl St Lubbock TX 79412Wan6jI M4jr pesonel checks orCOD6I%8axinTexaeUScurrencyonly Minimum Wood Order $1000 3026 2232 2838 3490 4055 4560 4969 6077 6688 7597 SPLYWIMCN48 t/64x12536 1132x12475 1116x12476 lIBxt2496 Matched Performance System TOP PERFORMANCE K&B ENGINES AkpksleManse K&B FUELS186 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE 186 FIBERGLASS CLOTH 180 Micro-Balloons TILLER 185 SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER 185 SUPER POXY PAINT K&B MIXING CUPS 12 Model Aviation DEALERS INQUIRES WELCOME Bill Etfinger * says OnlyPlane Pastern0 Seto give coo asserted designs voc want have selected best clasoic designs time coo choose patterns part important eacluelve feature Ducted Fans Navy F4D-1 Skyray ecZIIIIIIIeLsF 020 go 1 eoateOeIength 44h wingspan 41PtO oh 6/C eoribte Landing Gear soste ength 3-S oh CIC eK-20 2 One-Third Scale Piper Tn-Pacer PA-22 16-319 wing seen eq wing area 20 3g cid engines Por4-5 oh eic ao t2 lbs el-lie acerati coach ft 1/3 Scale Piper Cub J-3 110 wing span ength 2000sqlnwwgarss doheiC 20 ao old eegioee RC35 2$2905 Quarter Scale WW SE-SA go% span sq wing area 70 22 engines SCOS 7 5 Quarter Scale WWI Fokker D-VIINew SPAD CXIII 79Yewing span2125 sq wing area t3to 31 ettgines Copahie flyer-it captures imagination RCOS-0 0 00 wrvyupav sq inlog ama a90 2hcrd evolve SOchlt lbs FOKKER DR-i TRIPLANEo OCOS ht24 95 72 wing span sat intIIIL.a.Full cantilever wings no flying wired Removal enolno volt Shockwing area 70 tot 50 esgineuot-- mouvted landing gear Oaluaiplywood fuselage huilt-up hieso wing RCO54 $2405 N r bitt Effinger Poonding Member AMA OFFS Hall Famer SOPWITH CAMEL F1Prices Conipiete plans cub asservely ft darailed p0ev lists PLEASE ADD 44 wing span 2100 sq iv0205 tor sbppng Imalog tahel Sour 1990 PIne Sets b Ovhuic Proc wing area 11 lbs wia SIC ofundable cv t 5 Orde wood & balsa cansnuvnon overCTECHNICAL 05 sq ft drawingsWESERVICES lOCOS t t 5 Rt 1 Box2SOOA Santa Rosa Beach FL32459 r MO WNG know bl advancesix weeksOF ADDRESS LET US KNOW WHERE YOU ARE GOINGWhen move please let us appropriate box mail Chk quwed change address Attach current MA mailing label boxenclose payment E NEW SUBSCRIPTION IappropriafOflin 1810 Samuel Morse Dr Reston VA 22090 Non-AMA-member subscription rates $1800 12 months US addresses US Schools $900 Libraries $1350 elsewhere including Canada Mexico $2900 Payment must check money order US funds drawn US bank NameI AddressI City/State_______________ ZIP ____I Model Aviation 1810 Samuel Morse Dr Reston VA 22090I complete virtually identical models hang ing ceiling immediate interest classrooms dedicated photography playing musical instruments static dis play models various types dance host other subjects housed same building suppose centers could viewed great places drop chil dren off after work possibly some par ents utilize evening-care centers well think however enjoy ment places sure theres also undertone serious ness offer opportunity excel society places great emphasis its youth does succeed-ordo-something-else basis Most us have seenusually courtesy TV coverage international sporting eventhow So viet system selects very few promising youngsters among thousands thou sands intensive training say gymnas tics effort bit laid-back aeromodeling principle same Competition Soviet national contests must very intense indeed Russians perceive modeling dif ferent light us Americans view hobby Soviets view sport treat such shall soon see myself trip Leningrad such terrific fun Bob Carver wife Diana planning attend Cup Leningrad CL contest mid-May Carl Dodge FAL Speed Bob Whitley FAI Precision Aerobatics Tim Gillott/Jeff Hollfelder FAI Team Race hope join us As enticement US participation Soviets have added /2A Combat AMA Combat list scheduled events got could Carverwho sponsors annual Bladder Grabber largest US Fast Combat meetsand resist being among first fly Bad Boy Combat right Vladimir Le nins front yard Letters Editor Continued page 12 cant done says hesorry buster youve conned Nice job Ill remember next con published A G Ronay Hoffman Estates IL Ligeti Stratos Its easy understand Model Avia tion well liked took pretty good article made greatthanks no small part Bob Banka Scale Model Re search some great photos full-size Stratos Continued page 194 SAFE FLYING IS NO ACCIDENT PROMISE* Mew 42 wkie * * low Product *Full Satlstactlou Full RefundSame Lower Price 58 oz GLASS CLOTH FORM 10500Compare Prices Sport-- PLAIN CRADLE2 ide Mirror Wheels h...-i~ Same Low Price 2/e Hardened minume Treated Use Epoxy Polyester Includes 2 sets ground bearings hardened 3 de Fuselage Resin axle bolts spacers 5116 diameter bearing 114 Scale Model Fits 12 Fuselage Easy Use Instructions Included long wear Unbreakable Completely Fuelproof Fibre Glassing Producea Rock Hard Rubber Tread Will NOT Peel Offe Stores Flat Satin Smooth Surface Easy Painting Machined Polished Width Doubles Shop Use 3 yrds *1195 6 yrds $2195 No End Play Wobble STD 6 114 Scale $2095 9 yrds $3195 12 yrds $3995 81495 per set 12 $2795 12 $3196 2 $3895Send SASE Free Sample SAVE THIS AD OT ADVERTISE OFTENI NO SHIPPING CHARGES Marty Berr 84 Stonefield Trail ndsor 6074 192 Model Aviation No 657 Super Squire RO Trainer 35/40 2-stroke 53 4-stroke power spans 56 No 658 Shuriken Streak$225 CL Trainer uses 2-line Monoline control spans 17 t/2A power No659 Boom Box$400 FF Wakefield Rubber competition plane spans 54 No 193StIletto CL Stunt model McDonald winner 1976 1980 1982 PAl Wold Champs$ 375 No 262Crashmasfer CL Crash-proof trainer two sizos15/30 35/40 power$ 125 No 3101930 Fleet Biplane PC Sport Scale far 35/40 4-channel Wingspan 56 in. / scale Two sheets$ 625 No 314Drake II PC Ken Willarda flying boat far 3-channel 15-power Fly land renronable gear$ 375 No 326Taylor Cub PC Don Srulls Schoolyard-Scale 049s 2-3 channel Spans 50 in$ 350 No 332Zephyr PC Small 2-channel glider hand-launch tow thermal slope soaring$ 200 No 366Laser 200 PC Sport Scale replica championship Aerohafic flier Uses 40 power 4-5 channelTwo sheets$ 1075 No 4471/2A Miss America PC Old-Timer hA Texaco model 049 glow 2-channels$ 650 No 4604-40 RC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels 650 No 465Blue Max ii PC Fun-fly sportoter 40-size engines spans 52 Lightweight strecture S 700 No 533Cessna C-37 PC Schoolyard Scale famous 30s plane 049/10 power 2-ch spans 42 in$ 500 No 539Simitar Slow-MotIon 15 RC Tailless flying wing 15 engines spans 60 uses 3-ch PC$ 350 No 569Blectroafreak PC Electric aerobatic plane spans 44 uses 05 motorS 5 50 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-hobo built-up sorfacesS 400 No 572TR-260 RC Sport Scale Aerobafic plane 4-stroke 60/65 power spans 66 in$ 1100 No 576Serendipllyl ndoor EZ6 racord-holder spans line in$ 325 No 578schweizer 1-26B PC Quarter-scale Sailplane spans 125 Two plan sheets$ 1475 No 581Gee Model Y RC Golden Age Racer spans 72 1 scalel fur 60 power Three plan sheetsS tl75 No 586Snapdragon RC Fun-fly/sportoter 25/30 engines spans 45 in$ 600 No 568Marish PC Slope-Soaring Sailplane spans 41 in. uses 2 PC channelo$ 425 No 593Tayiorcraft PC Sport Scale light plane builds standard 2-placer clipped-wing air show stunter Spans eOhor 70 56 30/40 two-stroke 40/40 tour-otrake engine Two plan sheeto no dncumentatlonS 1000 No 595Sparrow PC Sportufer 25 engines spans 43 ro$ 650 No 596Coronet 150 PC-Assist Old-Timer enlarged 150% spans 72 uses 40-sire 4-ntmke/30-slze2-strokeS 650 No 601Nickel PC Sportoter engine 3 PC channels Spans 44 in$ 500 No 603Sparrow Hawk P-3D FF Competition robber-power plane won 87 Nato Spans 30 in$ 225 No 607Curtiss Seagull PC Giant Scale biplane spans 90 uses Quadra/Zenoah power Three plan sheets no doc$ 2400 No 609Taperwlng PC WA Pylon Pacer spans 29 Plan plus parts template sheet$ 600 No 610Profobypa PC Sport biplane spans 48 uses 45/2-cycle 60/4-cycle power$ 650 No 619Keith Rider R4 PP Scale golden Ago racer robber power spans 10 inS 300 No 620Gimlet 40 PC Sport/Puftem plane spans 6010 40/50 engine 12 oheets$ 1100 No 622Ouick P-3D PP Compehtion rubber-power P-30-class plane spans 30 in$ 325 No 623Henderson Longater PC Quarter-scale 1933 flinner spant 9gO/ 4-utreke 40/48 engine 13 plan uhf doc$ 1650 No 624Keteher Lark PC Quarter-scale homebuilt spans 6910 60/90 4-streke power 2 plan sheets no docS 1100 No 626Sweepee PC SportlPaoern canardo forward-swept wing spans 64 uses 40 power 2 plan sheets$ 1300 No 626Prime Cut PC Sport/Aerobatic plane spans 00 uses Quadra 35/40-sine power Two plan sheets$ 1300 No 630Original Fly Baby PC Old-Timer opono 72 uses 19/25 2-cycle 40 4-cycle power plan sheets$ 1150 No 632P-51H PP Lubomir Koutnys 5ncule Rubber model spans 23 in$ 325 No 633Orca PC Slope Sourer spans 75 uses twist-wing control Two-ch PC XMTR must have electronic mining$ 675 No 634SB2C Heildiver CL Profile sport/StonIer spans 54 35/40 power$ 575 No 635The Gambler PP Indoor Bostoniun rubber-power cabin plane spans 15% in$ 200 No 636Keytwo PC Tri-geored low-wing sporfoter 20125 puwer spans 44 0S 575 No 637A-B Shrtke PP Competition plane AMA Classes 6 15/23 power spans 60 I$ 675 No 638Owl Racer CL Scale Racer 049 power spans 20 in$ 225 No 639Skyvolt PC Tn-geared Electric aerobatic sportufer 05/15 power opens 50 in$ 6SO No 640BIrd 01 Pny CL AMA Pant Corlibaf plane 36 power spans 533/g in$ 550 No 641Lii Ole Reliable PC Old-Timer sport flier spans 50 engines$ 575 No 642Bipe 89 CL Partial plan upriatos deltults 48 nemiun 35cc power Spans 22 in$ 225 No 643Noctule IIB PP Batlike flying wing CO2 power spans 30 in$ 325 No 644Bellanca Columbia PC Schoolyard Scale 2 PC channels WA engine Wingspan 46 toS 575 No645Laird Solution CL Profile Scale biplane spans 36 25/35 power$ 575 No 646WInter Hawk PP Rubber-power Coupe dOiner compehtlon plane spans 47 in$ 375 No 647Coo Special CL Semiscale biplane WA engine spans 24 in$ 300 No 648Curtiss OC-2 PP SmIls Outdoor Gas Plying Scale biplane uses electric power spans 24 FurHiLine Mini-6 motor$ 325 No 649Thingamabob PC/CL Multimode trainer 25 gas 05 electric power spans SunS 475 No 65047/86 RC Special PC Aerehafic sport plane 40 power spans 611013 plan sheets $ 1075 No 651Consortium PC Hand-Launch Hi-Start Glider spans 60 in$ 650 No 652Der Fledermaus PC Low-wing sport plane 20/25 power spans 55 in$ 075 No 653Avanti CL Profile Sport Scale canard bboliner twin 049s spans 36 in$ 575 No 654Tamecat PC Trainor/sporfoter styled like P14 opans 66 40/61 power Pour plan sheetsS 1525 No 655Aatroatar PP AMA Clara A/B Gas plane spans 67 in. uses 325/350cc power$ 600 No 656XF13C CL Profile 15 Carrier plane spans 27ri in550 0 Os 0 OCtJ 0cJ s8 0 s S u0 0 08 no 80 co oE zeg 050 000 -o 0 crc -iz - t0e Os 000 0 C 0 0 - 0 0 8 0 c us 05 n 00 jnh 0 00 Os05 C0 0 0C 0 00 0 50 0 en 0 C Ec a-E CITY 00 us Circle numbers of plans YOU wish order best handling please include rel quests payment some other service plans order 193262310314326332386447 460465533539569570572576I o 81586588593595598601 07609610619620622623 624626628630632633634635 636637638639640641642643 644645646647648649650651I 0 652653654655656e657658659I Plan price includes first Class postage US delivery whiCh Air Mail over 300 miles orders non-US address iease add $250 Air Mali osta e handiin ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print CarefullyEnclosed $ _______________________ NAME _____________________________________________ AMA No ________________ STREETI couple things though should fixed explained page 196 May issue under specifications original aircraft balance point CG notation should have 47 tA ahead trailing edge main wing Maybe can explain canard airfoil model better way started out Eppler 203 cut foam main wing built-up canard structure ribs would have perpendicular leading edge pro duce airfoil shape Using foam did cutting 60 u angle wound up knows what airfoil con siderably thinner percent chord what started However being thinner helps make canard stall first desired now have good working drawings accurate 40%-scale Stratos same scale model shown article has clear canopy Id enjoy cor responding anyone interested build ing Ligeti Stratos long send pre-addressed stamped return envelope Stratos now has about 100 flights dependable maintenance free model Ive owned 18-ft-span powered Sailplane Ultimate Solitude mentioned article question mark time flies very nice 0S 61 four-stroker Its real floater 17 lb picture left Dennis Reichenbery right taken annual Jumbo event Marvin Reese 329 N Milstead Wichita KS 67212 at\-\r 8sG5 POUP HOOKY F5U3rOeUe 5 J 5 L iLF4i7LIIYRNSES P0 POX 8tOflP800IflOtknNSt7WHen SPOt ttHSHl 194 Model Aviation Bob Fiorenze Hobby Center Inc Dealer Yellow Aircraft UPS Orders Shipped Daily Now Available Feancover Covering Manerial visit Oar Showroom 135 mis Disney WarIdI NEW Custom Bulldin9 Service 420 Wean SR 43414071327-6352 Winter Springs FL 32709Fax 14071327-7148 LSTATEZIP _____________________________ [v32][b-1-10-1-10]] VEND MOUNTS88n888 Fall anO rust proof tOrso Con PO8 THE VIBRATION KILLER sotarlon 05 120 snalne. P8tH tirtuItn tirewati engine /880 mount TnpcaltlsratlonroOuctlvn ot ro5 Coo as-n nn Co conalete nnoufltH solota point rabound,,, e80ttOrs US/na lflStuCtIOnC88 585 to. send tnore ohmic monan ordor ner us aaa psoasons FO 500 Oseas SOSAsOOA FL seaaa ero 3700002 FL rHHdsnte 72* euto tat trosMAmoN sand 555*
Edition: Model Aviation - 1990/07
Page Numbers: 6, 8, 10, 12, 192, 194
rs et4 cutor letters will carefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Di Reston VA 22090 FT Vagabond Enclosed find picture old Frei Flight Vagabond 6-ft-span mode used Ohlsson 60 power Its las flight took place 40 years ago calm clear warm day nose dived 2000 feet concrete sur made spectacular crash Up time 21 absolutely flaw less flights day still wonder wha could have caused crash Could some please enlighten Bill Spathiat 2727 Lawtherwood Ct Dallas TX 7521Z suspicion something shifted Pei haps rubberband gave out resulting changed balance point incidence settin Any other ideas 1991 beyond major con cern seems 1991 has develope demon will swoop down de stroy miniature airplanes warn ing facts say far trut use some commonsense guidelinet As modelers seem bombarde kinds gadgets will enhanc modeling capabilities Some goo needed others may frill such gadget beeping fre quency control pin board seen Ma 1990 issue Model Aviation avail able Custom Tronics Texas confused AMA sticke stations California Custom Electronics Ive flying RC since 1967 ing electronics technician have enjoye growth RC equipment Today mor Continued page 6 Model Aviation Frequency Control Satisfaction Guaranteedi EAv HINEEZZ SH-710 Pkg 24- $295 THE HIGH-TECH HINGE DESIGNED FOR THE CYANOACRYLATE AGE Easier install other hinge No gouging picking messy epoxies Simply cut single knife slot hinge slide hinges place apply few drops favorite CA glue youre done SUPER FAST SUPER EASY SUPER STRONG 74e e4t /1a9e4 e 6aa c SIG MFG CO INC.401-7 So Front St.Montezuma IA 50171 23-5154 SPORT/PATTERN FLYING FOR ENGINE OR MOTOR SIMPLE TO BUILD TO FLY DESIGNS Featuring extensive pre fabrication including pre cut fuse lage sides tail feathers accurately die machine cut parts HAMMER 20 Pocket size pattern ship 20-30 engines 25 size electric motors Wing span 50 400 sq area 31/24 lbs flying weight Symmet rical airfoil tapered wing generous side area superb perf mance Has unique simplicity design quick accurate con struction 28 KITS TO CHOOSE FROM IPAVEY675 TOWER LANE YSTEMSWEST CHESTER PA 19380 ORPORATION 215-430-8645 modelers flying RC ever before making acquisition 50 RC channels 20 kI-Iz spacing very much needed channels may work well given area now have RC channels choose last several years have learned some new terms like 31M 2IMD lIM lIM later Some interferenc beyond control Wha can club help prolong model life club can have frequency sur vey done flying site using scannei receiver will let club know what frequencies should avoided Second club can become radio wise Ra dio wise knowing what 31M 2IMD anc lIM isand what to minimize ef fects Lets review what phenomenon known 31M occurs two transmitters operating different frequency generate interfering signal third frequency right another RC channel An important factor much difference between control RF power transmitter 31M RF power must present before interferencc can affect receiver attendance major Pattern meet used ICOM-7000 receives observed 31M action Showing fellow modeler AMA President Don Lowe both amazed see 31M RC channel watch pilot turn transmitter channel pro ceed fly unaffected Hmm Receivers must work designed course some better others pilots ha no interference problems during wholi three-day meetand receivers usi dual-conversion narrow-band de signs However transmitters gob stickers indicating narrow-ban units secret pilot spacing Thi four pilot stations separated thereb reducing 31M-generated RF power enougl affect same-channel receivers case able reject inter fering signal obey controlling trans mitter system spacing pilot sta tions along assigned frequencies t station take care adjacent-channe interference solves problem Next lets deal 2IMD Second Order Intermodulation Distortion Man wideband receivers using single-conver sion superheterodyne design suscepti ble type interference interfer ence occurs two transmitters use op erate channels frequency sepa rated approximately receivers inter mediate frequency other words avoic simultaneous use RC channels 2 number apart instance using th AMAs Interim Alternate Plan 1 May Mod el Aviation page 122 along narrow band transmitters will solve Now last type interference lIM phenomenon occurs whes Continued page h 8 Model Aviation HAMMER 40 Big brother Hammer 20 attributes- plus larger size wing span 60 620 sq area 4-5 lbs flying weight 35-45 two-cycle 40-60 four-cycle engines 40 size motors Does pattern manuevers can still fly like docile trainer CESSNA 150 real pretty sport scale copy famous trainer 20-30 twocycle 30-40 four-cycle engines 25 size electric motors Wing span 50 410 sq area 3l/24 lbs flying weight semi-symmetrical airfoil optional flaps wide speed range realistic performance ones airplane seems flying very uncontrolled manner due controlling influence brain know Pilot er ror have experienced Pilot error just dumb thumbs giving up elevator making highspeed inverted low pass includes ques tions like Did fully charge batter ies Did check correct direc tion control movement Did check c etc Also included lIM guy turns transmitter frequency youre flying As RC equipment becomes reliable old lIM begins loom biggest problem above systems frequency control have tried proved times fly-ins contests currently being used home RC club Prop Nuts Highland TX have 31M 2IMD problems although occasion old lIM gets us club has questions fre quency problems contact AMA dis trict frequency coordinator names ad dresses VP column headings AMA News section Im member AMA Frequency Committee will glad help too further frequency con trol guidelines see May 1990 MA page 120 Larry Dungan Box 1254 Pasadena TX 77501 Continued page 12 10 Model Aviation Supe Pos& Pojiswk 40. FREE CATALOG jfl 04 687-1702 K&S METAL AJuminumlBrasslCopper Tubing & Shapes Music Wire sTools Soldering Irons Silk Silk Span Finishing Materials 4 catalog Pwudwet A63A WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY SALSA SHUTS 36 45 30 1633 332240 18 243 316249 14 256 132337 120337 1 1633749 31 33234458 37 18 35471 45 31636282 99 14 373 95 61 916385110 3S 388924 71 12 3110155 34 3169191 916459 7648 332470 9456 98 480106 66 31649312270 14 4110134 84 38 65225139 12 4225261 MATCHED SHEETS 42 3324100 84108 3164120 144131 SAL SAS11CKS 364 1161409 1 163810 1161214 3321410 3323812 3321216 191808 18.14II16 18381218 19121024 3163161116 316381720 316122230 14141624 14381926 14122130 14343444 14I4055 5165167128 38382737 3S123246 39344255 3815270 12123652 12344662 1215878 58584869 34346790 WHAT 00 CALL THE BEST SHEETINGTwerskins MATERIAL FOR FOAM WING CORES CHECK THESE FEATURESGyro, 0 yha fyllosong color Superyrsroglfl ll rOoWaco 04 0uyrr 505 CaybI,y Ey loamPolar 550, 001 pr sq n Ompryur,Oabyy0SSO9 01, Smofl h4fl gloss lflOSun IIow Supr,r ra,saooa O n5r0 luI Suporror rss,no 5c us,tOg Eay tO apply LOw low 0505 Cl /64 5,, Phone 3093423009 I//N6MF6t FAX 300-342-3014 OyOly50 Oraoo,aornonno,rooo,,5oon uausooynooloynoo uao uuuo,ooaonuo un,$4flpersheet SEND 9400 FOR CATALOGllnos 0,Onl 0440 1 /Oo sales 0a WING MIg 306 E Simmons Galesburg IL 61401 & & MODEL BUILDING 7SERVICE RADIO CONTPOL P1OOUCTS carry full Iinof Byron Originals Bdb Parkerson Tom Cook Bob Violet products COD Orders Accepted 718 983-9735 328 WATCHOGUE ROAD STATEN 11AM 0 NY 10314 w IALSA TRIANGLES 36 4425 383630 235 33445 55 BALSA PLANKS 36 90 257 329 4293 11/23302 11/24396 22231 23336 24476 33615 34715 TAPERED SHEETS36 14265 14385 36268 38398 123120 About Uncle SASS WOOD4 311631626 3/1611430 31163838 31611246 3163460 141442 143849 143480 3/83860 381270 383400 1211290 1234100 BUNDLE DEALS 30-116336688 201164361035 20332336860 15332436955 1618336735 1018436895 19316336920 10316 438839 10-14336655 1014438930 1039336870 538436600 512336540 INSTANT GLUE 5324361080 1 75ok 298 10332448885 ba TOrn 298 5184 48500 2, Thck 650 5316448600 2, 150 550 514448645 TRAILING EDGE 36 14132 51611439 3811246 12270 wrote poem about uncle best friend Perhaps some readers would enjoy Maybe some RC nuts too RC Nut always know whereabouts field no doubt flies plane day nothing ever keeps him away cold outside Warm clothes donned stride snow around Skis used get off ground plane does crash fixes up flash MonoKote iron instant glue makes look just like new works straight through night ready next flight Gloria Shaffer Duanesburg NY Bell-Anchor intriguing exquisite piece writing artistry Ive ever privi leged conned Bell-Anchor April 1990 issue Scratch Biltright commendeda super con artist Ole dummy sat down thought hed like build Bell-Anchor Whoa Continued page 192 SPRUCE TRIANGL ES 36 38 7 121284 34 34 5 PL VUIRCII 48 3132xt2700 1I8x12776 3I16x12626 114x12626 3/8x12726 112xt2900 GROOVED LG PII3UNTS lZIvacIme 3834/18/40 3834/532140 I234/316/45 AT LAST An Effective High Tech Engine Cleaner R/O Engines Just Brush & Carbons Gone-Guaranteed ONLY $695 CA residents add 725% tax Clean Engines-Run Cooler-Last Longer Send Check Money OrderTo AIRBORNE HOBBIES 3764 30TH ST SAN DIEGO CA 92104 619543-9703 Satisfaction Guaranteed Direct Only CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa HARD MAPLE 1 4 38 38 38 38 12 38 34 12 40 45 50 99 66 * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 364 18 181725 SINCH DOWELS36 18 09 31611 1414 51625 3/832 18 18 18 3/8 316316 14 14 14 38 14 12 38 38 3812 12 2 3/4 LIGHT 4-6 LB WOOD36 1/22362 1/20362 1/18382 3/22374 1/8391 3/183105 1/43125 3/83158 1/23186 3/43300 13425 1/18498 3/324118 1/84135 3/164157 1/44189 3184285 1/24386 LONE STAR EPOXY81 BALSA HOT LINE9o LI895LITIPLY4 1/8x6176 Cull 806 745 6394 lOem6 pmCen8relTumeSn,598115x12360 30n,n599 114x6276 LONE STAR MODELS114x12560 Ccnt48 Handling Charge pay UPS Add $350 COD *400 exfra PP APO FPO 1623 57tl St Lubbock TX 79412Wan6jI M4jr pesonel checks orCOD6I%8axinTexaeUScurrencyonly Minimum Wood Order $1000 3026 2232 2838 3490 4055 4560 4969 6077 6688 7597 SPLYWIMCN48 t/64x12536 1132x12475 1116x12476 lIBxt2496 Matched Performance System TOP PERFORMANCE K&B ENGINES AkpksleManse K&B FUELS186 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE 186 FIBERGLASS CLOTH 180 Micro-Balloons TILLER 185 SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMER 185 SUPER POXY PAINT K&B MIXING CUPS 12 Model Aviation DEALERS INQUIRES WELCOME Bill Etfinger * says OnlyPlane Pastern0 Seto give coo asserted designs voc want have selected best clasoic designs time coo choose patterns part important eacluelve feature Ducted Fans Navy F4D-1 Skyray ecZIIIIIIIeLsF 020 go 1 eoateOeIength 44h wingspan 41PtO oh 6/C eoribte Landing Gear soste ength 3-S oh CIC eK-20 2 One-Third Scale Piper Tn-Pacer PA-22 16-319 wing seen eq wing area 20 3g cid engines Por4-5 oh eic ao t2 lbs el-lie acerati coach ft 1/3 Scale Piper Cub J-3 110 wing span ength 2000sqlnwwgarss doheiC 20 ao old eegioee RC35 2$2905 Quarter Scale WW SE-SA go% span sq wing area 70 22 engines SCOS 7 5 Quarter Scale WWI Fokker D-VIINew SPAD CXIII 79Yewing span2125 sq wing area t3to 31 ettgines Copahie flyer-it captures imagination RCOS-0 0 00 wrvyupav sq inlog ama a90 2hcrd evolve SOchlt lbs FOKKER DR-i TRIPLANEo OCOS ht24 95 72 wing span sat intIIIL.a.Full cantilever wings no flying wired Removal enolno volt Shockwing area 70 tot 50 esgineuot-- mouvted landing gear Oaluaiplywood fuselage huilt-up hieso wing RCO54 $2405 N r bitt Effinger Poonding Member AMA OFFS Hall Famer SOPWITH CAMEL F1Prices Conipiete plans cub asservely ft darailed p0ev lists PLEASE ADD 44 wing span 2100 sq iv0205 tor sbppng Imalog tahel Sour 1990 PIne Sets b Ovhuic Proc wing area 11 lbs wia SIC ofundable cv t 5 Orde wood & balsa cansnuvnon overCTECHNICAL 05 sq ft drawingsWESERVICES lOCOS t t 5 Rt 1 Box2SOOA Santa Rosa Beach FL32459 r MO WNG know bl advancesix weeksOF ADDRESS LET US KNOW WHERE YOU ARE GOINGWhen move please let us appropriate box mail Chk quwed change address Attach current MA mailing label boxenclose payment E NEW SUBSCRIPTION IappropriafOflin 1810 Samuel Morse Dr Reston VA 22090 Non-AMA-member subscription rates $1800 12 months US addresses US Schools $900 Libraries $1350 elsewhere including Canada Mexico $2900 Payment must check money order US funds drawn US bank NameI AddressI City/State_______________ ZIP ____I Model Aviation 1810 Samuel Morse Dr Reston VA 22090I complete virtually identical models hang ing ceiling immediate interest classrooms dedicated photography playing musical instruments static dis play models various types dance host other subjects housed same building suppose centers could viewed great places drop chil dren off after work possibly some par ents utilize evening-care centers well think however enjoy ment places sure theres also undertone serious ness offer opportunity excel society places great emphasis its youth does succeed-ordo-something-else basis Most us have seenusually courtesy TV coverage international sporting eventhow So viet system selects very few promising youngsters among thousands thou sands intensive training say gymnas tics effort bit laid-back aeromodeling principle same Competition Soviet national contests must very intense indeed Russians perceive modeling dif ferent light us Americans view hobby Soviets view sport treat such shall soon see myself trip Leningrad such terrific fun Bob Carver wife Diana planning attend Cup Leningrad CL contest mid-May Carl Dodge FAL Speed Bob Whitley FAI Precision Aerobatics Tim Gillott/Jeff Hollfelder FAI Team Race hope join us As enticement US participation Soviets have added /2A Combat AMA Combat list scheduled events got could Carverwho sponsors annual Bladder Grabber largest US Fast Combat meetsand resist being among first fly Bad Boy Combat right Vladimir Le nins front yard Letters Editor Continued page 12 cant done says hesorry buster youve conned Nice job Ill remember next con published A G Ronay Hoffman Estates IL Ligeti Stratos Its easy understand Model Avia tion well liked took pretty good article made greatthanks no small part Bob Banka Scale Model Re search some great photos full-size Stratos Continued page 194 SAFE FLYING IS NO ACCIDENT PROMISE* Mew 42 wkie * * low Product *Full Satlstactlou Full RefundSame Lower Price 58 oz GLASS CLOTH FORM 10500Compare Prices Sport-- PLAIN CRADLE2 ide Mirror Wheels h...-i~ Same Low Price 2/e Hardened minume Treated Use Epoxy Polyester Includes 2 sets ground bearings hardened 3 de Fuselage Resin axle bolts spacers 5116 diameter bearing 114 Scale Model Fits 12 Fuselage Easy Use Instructions Included long wear Unbreakable Completely Fuelproof Fibre Glassing Producea Rock Hard Rubber Tread Will NOT Peel Offe Stores Flat Satin Smooth Surface Easy Painting Machined Polished Width Doubles Shop Use 3 yrds *1195 6 yrds $2195 No End Play Wobble STD 6 114 Scale $2095 9 yrds $3195 12 yrds $3995 81495 per set 12 $2795 12 $3196 2 $3895Send SASE Free Sample SAVE THIS AD OT ADVERTISE OFTENI NO SHIPPING CHARGES Marty Berr 84 Stonefield Trail ndsor 6074 192 Model Aviation No 657 Super Squire RO Trainer 35/40 2-stroke 53 4-stroke power spans 56 No 658 Shuriken Streak$225 CL Trainer uses 2-line Monoline control spans 17 t/2A power No659 Boom Box$400 FF Wakefield Rubber competition plane spans 54 No 193StIletto CL Stunt model McDonald winner 1976 1980 1982 PAl Wold Champs$ 375 No 262Crashmasfer CL Crash-proof trainer two sizos15/30 35/40 power$ 125 No 3101930 Fleet Biplane PC Sport Scale far 35/40 4-channel Wingspan 56 in. / scale Two sheets$ 625 No 314Drake II PC Ken Willarda flying boat far 3-channel 15-power Fly land renronable gear$ 375 No 326Taylor Cub PC Don Srulls Schoolyard-Scale 049s 2-3 channel Spans 50 in$ 350 No 332Zephyr PC Small 2-channel glider hand-launch tow thermal slope soaring$ 200 No 366Laser 200 PC Sport Scale replica championship Aerohafic flier Uses 40 power 4-5 channelTwo sheets$ 1075 No 4471/2A Miss America PC Old-Timer hA Texaco model 049 glow 2-channels$ 650 No 4604-40 RC Shoulder-wing sport flier 4-cycle 40-size engine 4 channels 650 No 465Blue Max ii PC Fun-fly sportoter 40-size engines spans 52 Lightweight strecture S 700 No 533Cessna C-37 PC Schoolyard Scale famous 30s plane 049/10 power 2-ch spans 42 in$ 500 No 539Simitar Slow-MotIon 15 RC Tailless flying wing 15 engines spans 60 uses 3-ch PC$ 350 No 569Blectroafreak PC Electric aerobatic plane spans 44 uses 05 motorS 5 50 No 570Busy Bee FF Pee Wee-30 plane 02 power spans 30 has either sheet-hobo built-up sorfacesS 400 No 572TR-260 RC Sport Scale Aerobafic plane 4-stroke 60/65 power spans 66 in$ 1100 No 576Serendipllyl ndoor EZ6 racord-holder spans line in$ 325 No 578schweizer 1-26B PC Quarter-scale Sailplane spans 125 Two plan sheets$ 1475 No 581Gee Model Y RC Golden Age Racer spans 72 1 scalel fur 60 power Three plan sheetsS tl75 No 586Snapdragon RC Fun-fly/sportoter 25/30 engines spans 45 in$ 600 No 568Marish PC Slope-Soaring Sailplane spans 41 in. uses 2 PC channelo$ 425 No 593Tayiorcraft PC Sport Scale light plane builds standard 2-placer clipped-wing air show stunter Spans eOhor 70 56 30/40 two-stroke 40/40 tour-otrake engine Two plan sheeto no dncumentatlonS 1000 No 595Sparrow PC Sportufer 25 engines spans 43 ro$ 650 No 596Coronet 150 PC-Assist Old-Timer enlarged 150% spans 72 uses 40-sire 4-ntmke/30-slze2-strokeS 650 No 601Nickel PC Sportoter engine 3 PC channels Spans 44 in$ 500 No 603Sparrow Hawk P-3D FF Competition robber-power plane won 87 Nato Spans 30 in$ 225 No 607Curtiss Seagull PC Giant Scale biplane spans 90 uses Quadra/Zenoah power Three plan sheets no doc$ 2400 No 609Taperwlng PC WA Pylon Pacer spans 29 Plan plus parts template sheet$ 600 No 610Profobypa PC Sport biplane spans 48 uses 45/2-cycle 60/4-cycle power$ 650 No 619Keith Rider R4 PP Scale golden Ago racer robber power spans 10 inS 300 No 620Gimlet 40 PC Sport/Puftem plane spans 6010 40/50 engine 12 oheets$ 1100 No 622Ouick P-3D PP Compehtion rubber-power P-30-class plane spans 30 in$ 325 No 623Henderson Longater PC Quarter-scale 1933 flinner spant 9gO/ 4-utreke 40/48 engine 13 plan uhf doc$ 1650 No 624Keteher Lark PC Quarter-scale homebuilt spans 6910 60/90 4-streke power 2 plan sheets no docS 1100 No 626Sweepee PC SportlPaoern canardo forward-swept wing spans 64 uses 40 power 2 plan sheets$ 1300 No 626Prime Cut PC Sport/Aerobatic plane spans 00 uses Quadra 35/40-sine power Two plan sheets$ 1300 No 630Original Fly Baby PC Old-Timer opono 72 uses 19/25 2-cycle 40 4-cycle power plan sheets$ 1150 No 632P-51H PP Lubomir Koutnys 5ncule Rubber model spans 23 in$ 325 No 633Orca PC Slope Sourer spans 75 uses twist-wing control Two-ch PC XMTR must have electronic mining$ 675 No 634SB2C Heildiver CL Profile sport/StonIer spans 54 35/40 power$ 575 No 635The Gambler PP Indoor Bostoniun rubber-power cabin plane spans 15% in$ 200 No 636Keytwo PC Tri-geored low-wing sporfoter 20125 puwer spans 44 0S 575 No 637A-B Shrtke PP Competition plane AMA Classes 6 15/23 power spans 60 I$ 675 No 638Owl Racer CL Scale Racer 049 power spans 20 in$ 225 No 639Skyvolt PC Tn-geared Electric aerobatic sportufer 05/15 power opens 50 in$ 6SO No 640BIrd 01 Pny CL AMA Pant Corlibaf plane 36 power spans 533/g in$ 550 No 641Lii Ole Reliable PC Old-Timer sport flier spans 50 engines$ 575 No 642Bipe 89 CL Partial plan upriatos deltults 48 nemiun 35cc power Spans 22 in$ 225 No 643Noctule IIB PP Batlike flying wing CO2 power spans 30 in$ 325 No 644Bellanca Columbia PC Schoolyard Scale 2 PC channels WA engine Wingspan 46 toS 575 No645Laird Solution CL Profile Scale biplane spans 36 25/35 power$ 575 No 646WInter Hawk PP Rubber-power Coupe dOiner compehtlon plane spans 47 in$ 375 No 647Coo Special CL Semiscale biplane WA engine spans 24 in$ 300 No 648Curtiss OC-2 PP SmIls Outdoor Gas Plying Scale biplane uses electric power spans 24 FurHiLine Mini-6 motor$ 325 No 649Thingamabob PC/CL Multimode trainer 25 gas 05 electric power spans SunS 475 No 65047/86 RC Special PC Aerehafic sport plane 40 power spans 611013 plan sheets $ 1075 No 651Consortium PC Hand-Launch Hi-Start Glider spans 60 in$ 650 No 652Der Fledermaus PC Low-wing sport plane 20/25 power spans 55 in$ 075 No 653Avanti CL Profile Sport Scale canard bboliner twin 049s spans 36 in$ 575 No 654Tamecat PC Trainor/sporfoter styled like P14 opans 66 40/61 power Pour plan sheetsS 1525 No 655Aatroatar PP AMA Clara A/B Gas plane spans 67 in. uses 325/350cc power$ 600 No 656XF13C CL Profile 15 Carrier plane spans 27ri in550 0 Os 0 OCtJ 0cJ s8 0 s S u0 0 08 no 80 co oE zeg 050 000 -o 0 crc -iz - t0e Os 000 0 C 0 0 - 0 0 8 0 c us 05 n 00 jnh 0 00 Os05 C0 0 0C 0 00 0 50 0 en 0 C Ec a-E CITY 00 us Circle numbers of plans YOU wish order best handling please include rel quests payment some other service plans order 193262310314326332386447 460465533539569570572576I o 81586588593595598601 07609610619620622623 624626628630632633634635 636637638639640641642643 644645646647648649650651I 0 652653654655656e657658659I Plan price includes first Class postage US delivery whiCh Air Mail over 300 miles orders non-US address iease add $250 Air Mali osta e handiin ian Make check money order payable US funds drawn US bank Model Aviation AMA 1810 Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print CarefullyEnclosed $ _______________________ NAME _____________________________________________ AMA No ________________ STREETI couple things though should fixed explained page 196 May issue under specifications original aircraft balance point CG notation should have 47 tA ahead trailing edge main wing Maybe can explain canard airfoil model better way started out Eppler 203 cut foam main wing built-up canard structure ribs would have perpendicular leading edge pro duce airfoil shape Using foam did cutting 60 u angle wound up knows what airfoil con siderably thinner percent chord what started However being thinner helps make canard stall first desired now have good working drawings accurate 40%-scale Stratos same scale model shown article has clear canopy Id enjoy cor responding anyone interested build ing Ligeti Stratos long send pre-addressed stamped return envelope Stratos now has about 100 flights dependable maintenance free model Ive owned 18-ft-span powered Sailplane Ultimate Solitude mentioned article question mark time flies very nice 0S 61 four-stroker Its real floater 17 lb picture left Dennis Reichenbery right taken annual Jumbo event Marvin Reese 329 N Milstead Wichita KS 67212 at\-\r 8sG5 POUP HOOKY F5U3rOeUe 5 J 5 L iLF4i7LIIYRNSES P0 POX 8tOflP800IflOtknNSt7WHen SPOt ttHSHl 194 Model Aviation Bob Fiorenze Hobby Center Inc Dealer Yellow Aircraft UPS Orders Shipped Daily Now Available Feancover Covering Manerial visit Oar Showroom 135 mis Disney WarIdI NEW Custom Bulldin9 Service 420 Wean SR 43414071327-6352 Winter Springs FL 32709Fax 14071327-7148 LSTATEZIP _____________________________ [v32][b-1-10-1-10]] VEND MOUNTS88n888 Fall anO rust proof tOrso Con PO8 THE VIBRATION KILLER sotarlon 05 120 snalne. P8tH tirtuItn tirewati engine /880 mount TnpcaltlsratlonroOuctlvn ot ro5 Coo as-n nn Co conalete nnoufltH solota point rabound,,, e80ttOrs US/na lflStuCtIOnC88 585 to. send tnore ohmic monan ordor ner us aaa psoasons FO 500 Oseas SOSAsOOA FL seaaa ero 3700002 FL rHHdsnte 72* euto tat trosMAmoN sand 555*