Just for the Fun of It

NOISE IS DOWNER flying sites lost put together could outstretch Great Chi nese Wall dismay over unreasonable neighbors acute ever Weve study after study persist thinking weve done part Horsefeathers have never really faced up prob lem may have some relatively good mufflers pure luck happen pur chase engine reasonably quiet wonders about because pipes noisy proves engine can run quietly think noisy old lady lives 4Yz miles away lost site true bomber-raid cacaphony lawn mowers fact decibel readings show local traffic louder models distance Thats irrelevant engines have distinc tive tonesand citizens large dont share love heavenly sound mufflers first decreed modelers sought mufflers decreased power least legal frequently cri terion still muffler widely used eloquentiy proves philosophy still us does point sound propelled vast distances sharp bark bedeviled manufacturer caught between rock hard place because cus tomers oppose efforts quiet down too much power loss know loss flying sites something happens other guy never us Until. muffler engine manufacturers fail produce reasonably quiet engines have learned would buy engines would turn competitive brand shall first modelers fault manu facturers problem curable dont hold breath probably realistic starting point officialdom pro gram effort comparable devotion pursue things like new RC fre quencies Are safe site secure People dont know safe sites gone Will next consumer industry might try getting heads straight am involved folks distant flying place save site first flew housing area com plaints came pointed out No overflies indeed distant barely sees houses Worse noise complalnts also questioned safety site remain active may fliers will have police model decibel meter given distance run safety checks like state auto inspection plane must bear sticker related items have checked off Nat urally such situation some members react persecution lets nuke-em attitude including chicken feliow mem bers would rather fly dead Touch-andgoes Its early Wednesday morning late November stare out window Hermes rattles alongnoting straight-up plume wood smoke neighbors chimney motionless trees leaden gray sky weatherman says will warm up later Vagabond RC Assist primed go am thinking King Arthur Knights Round Table galloped off noble missions Raiders Lost Ark Since began editor Bill Barnes 1936 until very moment mail has dominated people looking plans accur ate mind strange all-but-forgot ten airplanes sources information clues things pub lished An unending stream people write sight magazines column ists folks get mentioned print Find ing what want life-and-death matter desperate researchers mention some guys needbecause cant help another wave letters follows guys over world have plans back issues know something saw print feels like marriage broker since nature abhors vacuum won der some model air museum library reference service has established Rubber Scalers really have grapevine know about real plane ever existed swap plans pictures old articles clippings sit librariesyoud sur prised sits dreams National Air & Space Museums library ferret out color chips pieces genuine fabric preeminent historians find old kits have plans collectively just about 16 Model Aviation just fun Bill Winter George Meyer Shortly after columns coverage George Meyers Lii Toot array magnificent home-built model en gines George passed away George bril liant career aviation lodestone wisdom attracted people world wide George mechanical genius merely extraordinary machinist can see famous Lii Toot Experimental Aircraft Assn Museum family estab lishing trophy-award EAA Winter sug gests clubs would well generate events genuine community service contributing Cancer Fund stuff dreams made Merely typical master Rubber Scaler Bill Noonan 1-in-scale de Havilland Hawk Moth rewards look closelyscale drag wires wing dummy tanks though hidden covered spoked wheels mud spray shield de tailed exhaust cowling sliced ribs lightness cant see him pic pilot wears peaked cap has startling life-like expression Noonan fine artist too Ultimate RC-Assist content sitting duffs between FF meets Hunters Bill Bob installed three-channel Micro mini RC ABC Rossi 65 Satellite operate small rudder elevator actuate K&B snap-off chop engine Bill launches RC-Assist 80-degree climb dad Bob tries keep knees knocking Climb slightly left-wing-lowbut turn angle crate bores up rock-steady Bob chops power pushes over glide trims elevator lift-finding circles ship distant speck brings back anotherand anotherflight way have cake eat too / Above Left Bill Hunter left Bob Huntereach high-soaring eagle Bills pure FF VIT AR Bobs RC-Assist Above Right Large air-flow exit rear widened venturi-type pylon wing mount Bills FF both similar respect Below Left Another view venturi pylon latest Satellitesand powerful Rossi 65 Fingers go 1/64 ply tube provide hold hand-launching Below Right Small rudder elevator provide flight control needed Bobs fast RC-Assist Satellite models clothes Bob Benjamin would 10 best-dressed men Since devotes much flying time showing kidsand curious adults toohow different kinds aircraft fly show some offbeat craft operate out schoolyards Above Left Veco Brave CL restored friends pile junk So old unknown whether Veco kit later Dumas release Its Stunter early 1950s Appropriately engine Forster G29bought Ray Chalker local MECA coordinator MECA engine collectors outfit Right Powered spark-ignition O&R 60 Bobs first Old-Timer really gets attention kids schoolyard flying Above Benjamins 54-in Comet Taylorcratt reinforced covered colored silk clear butyrate Three servos Enya 09 After 40 flights being converted scale dihedral tail surfaces 4-channel scale paint scheme Comet 50-in series great Left Original Y2A CL along lines famous Magician demonstrates kids what can done 049 plastic RTF does inside outside maneuvers light breeze AIR OUT THRU BATTERY AS EXAMPLE ONLY WRAP WITH IRON-ON CLOTH ___ RLK METAL OR PLASTIC MOTORTOP VIEW MOUNT STRAPS USE 4-40 X3/I6 IN MOTOR JF1 #2 SHEET METAL INIIt=4LiL PLYWOOD FORMERAM~UJ JLf ML 12 SIDE VIEW KRC RECOMMENDED MOTOR MOUNT 12 CUT SNUG-FITTING HOLES IN I/B PLYNOTE REAR FORMER MAY BE POSI FORMERS TO SUPPORT MOTOR OFFSETTIONED AT OR AT 2 IN FRONT OR MOTOR HOLE IN REAR FORMER FORIN BACK OF MOTOR COOLING HOLE DESIRED SIDE AND/OR DOWN THRUSTRE SURE THERE IS I/2DIA AIR SHOWN EXAGGERATED HEREEXIE HOLE MIN IN FUSE BOTTOM TYPICAL ELECTRIC MOTOR-BATTERY WIRING DIAGRAM FOR MOTORS TO15 SIZE 8 BATTERY PACKS OF UP TO 12-12 AMP HR CELLS RAPID INTERFERENCE CAPACITOR PARTS LIST-PARTS LIST ICwetI WIREIAor lB GA stranded copperMICRO SWITCHI5 AMP-250 VAC-Unjnoo 3 TMT 15-4 RADIO INTERFERENCE CAPACITOR- 01 MPG lnicroeqoinolent IRADIO SHACK 275-OIBI forodl redoce high frequency radio isterfereeceCHARGE SOCKET Switcltoraft #712A egoloolent Note low frequency interference occoro odd toCHARGE PLUG SwtcBcroft *160 eqoioolent notor o 47 MPG eloctrolylic sore obseronARMING SWITCH- Sohniniatore single pole single polorily portthrow ISPSTI 10 AMP125 VAC ROOIO SHACK #275524 MOTOR BRAKE RESISTOR25 124 27ok1 non wottor eqojooleet FUSE ATC 20 AMP adopt B flog connectorsCONN. MOTOR B BATTERY Moles 2 pin sloe per CONN. MICRO SWITCH B FUSE IBT flog type Waldotorecommended motor nonoyactorer Copied firsl SEAM newsletter ISOCIETY OF ELECTRIC AIRCRAFT MODELERS Scale model ever kitted before born Aeronca K comes mind Since early post-WW II days series 50-in Scale flying models Comet has remained popular Comet its early days designer tal ent subsequent producers lumped gether Monogram Top Flite Carl Gold berg models generated ex-Comet people Comet great creators worked like Joe Konefes Bombshell fame Started three guys during late 1920s legend has total starting capital about $200 principals laundry manby WW II 500 em ployees biggest model plane manufact urer world has seen Among 50-in fliers T-Craft alone has great Rubber FF Gas Radio Control has flown indoors RC mentioned Hurst Bowers modi fied Aeronca K Came letter artist Bob Benjamin gifted modeler full-scale plot wanted build Quarter Scaler Sources given pre cise enough other readers told us Bob Lopshire definitive Quarter Scale plan turned out given wellknown Scale flier Bob Karlsson real K check out plans general distribution told you ran Bob Karlsson might try bended-knee approach So Karlsson sent plansI just opened Three readers sent help Benjamin Hobby Helpers plans actual tearsheets early American Modeler Which bit tearing because often flown talented late Ed Yulke designed knew crate quite well beautifullyengineered airplane Ed engineer Luscombe later Republic cas caded escapements No cant send plans alas prompted letter Dick Glea son Gleason Enterprises 1704 29th Ave SE Rt 2 Box 125 Austin MN 55912 Dick operates plans-finder service offers information cost 560 different makes 1600 models line draw ings have published over past 50 years plan form During 1935 writer published rubber-powered Waco D So prove Dicks point plan redrawn sheet number plates MAN Dick claims corrects errors clarifies construction did excellent job believe Enclosed 3-view mysterious Stin son PT tandem low wingI drawn published somewhere What scale asked dont remember doing drawing real plane existed Dick has doing five yearsand never heard him Three years ago 50 old kit plans plus 42 RC projectsinked Mylarwere des troyed fire like Phoenix rose ashes Bob Benjamin incidentally Cessna 140 owner chided us confusion about flying 120 days yore Seems confused 140 flaps subconsciously assuming 170 140 have several occasions after careful checkout flown 140 Bob tells us being abandoned grass field air port now RC site give guys dont often get near big ones chance check out emphasizelots Continued page 20 18 Model Aviation KRC RECOMMENDED BATTERY INSTALLATION 1/16 PLY OR 1/16 HARD BALSA 0 Top Quality Name Can Depend 4-40 STEEL KWIK-LINKS 9 4 4-40 links con structed top quality spring steel control linkage hook-ups Cat No 3042 $100 / / Cat No 306$75 ea NICKEL PLATED SOLDER LINKS new nickel soldering Cat No 305 4-40 solder links plated easy 2 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY 1/4 scale HINGES Easy install precisionStrong smooth andBuilt heavy load DUBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free locked --the small the1/4 scale applications checked for-heavy duty hinges smoothness theCsixThey use removable eLIjj3/64 dia cotter pin tory-holes eacho side max imum holding o 0 0 60 000 Cat No 118 6 per pkg $100 Cat No 116 6 per pkg Cat No 257 Cat No 119 l5perpkg $195Cat No 117 l5perpkg l5perpkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED DURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 -1/4243 7/32 141 3/16 139-1/4 136 3/32 1371/16 455/32 k Heavy duty $1 00 2 per set -J--------------------------- $80 per set sets 4 J HEAVY DUTY 4-40 BALL LINK IIflT/nl Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse age minutes dr ing 3/16 hole Cat No 203$1 /*fsl MO DUeBRO SNAP-ON BALL LINKS V Bolt S85 Threaded $85 Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight Excellent offset steering servo throttle hook-ups Cat No 180 Cat No 181 Cat No 182 DUeBRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 DU-BRO 4-40 KWIK-LINKS 12 rod included Fun/Winter Continued page 18 care taken operating big little close proximity Last time happened fel low stuck transmitter hand standing airplane started tak ing pictures Lets hope some mag doesnt run gag picture anti-super-monster people will blow stacks Bob has cathoilc interests own modeling show pix portion mixed fleet really fly big Buzzard RC-Assist out little schoolyard Bob goes lots attention neighborhood kids have comments model press about getting types models areas kids non-modelers can see idea right markfor modelers know what doing Seeing newcomer wipe out RC trainer against side school what want show general public make practice flying something like OldTimer Control Line job small Scaletype RC schoolyard least once week weather permitting making practice take much time necessary talk kids Occasionally homeown ers walks over chat three years have never negative comment will send some stuff couple sport Free Flights hopefully Pea nut rubber job wife building loves full-scale 140 dislikes model engines has get near thinks Trexler wheels super beginning some nice work small Rubber Scale building projects hear Bob doing some model mag cover paintings too Just saw Model Builder man seasons Which prop recent interest comments others concerning engine stroke torque prop size etc says Richard Aley Honolulu what ics worth would like add comments engine has its own unique set horsepower torque vs rpm curves Gen erally rpm peak horsepower same peak torque So what say have use prop will allow engine run its peak horsepower rpm live happily ever after Right Yes youre running engine bench What seems have overlooked Dick continues much horse power torque engine capable pro ducing much converted thrust given airplane propeller combina tion other words propeller efficiency airplane given flight condi tion will propeller will give maximum efficiency converting horse power thrust order make har monious relationship engine used must able turn efficient propeller engines peak horsepower rpm have Schnuerle-ported 60 must turn around 15000 rpm develop close peak horsepower mount con temporary Pattern airplane use 11-7 11-8 prop engine will develop close its peak horsepower air prop will fairly efficient converting horsepower thrust airplane will perform very well aithough will fly quite fast Continued page 84 20 Model Aviation NEW Discriminate Scale Fliers Demand Dave Platt m perfectionist.my kits prove reputation finest models RC scale has founded upon careful attention detail period over twenty years fact Im particular about kits theyre available personally make kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly THE ULTIMATE legendary beauty efficiency Spitfire 1/5 scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 gIn engine Maximizer ultimate Spitfire provide intense experience sophisticated R/C $ 47 -delerSpan 88 Length 78Weight 1520 lbs e%er%cjmnitt melO9% Grand bold flies great staying easily transportable 11/5 scale 7 span over 1000 sq ins gg engines Bucker Jungmeister regular direct drive engines 60 gg 65 span 11/4 scalel ace aerobatic biplane time Still fits car $139 $179 New 1/4 Scale Pilot &$139 Supplied unpaint- o ed comes in- Available struction booklet 1/5 116 scale WorldRetracting $3 War II Fighter Pilots full Conspietesysterri $t39 figure515heavie ships 110W TO ORDERDireci rnannfacturer mo markapi Write caliwe accepi check money order Master Charge Visa cards pay UPS anysshere ike USA fFforida residenis add 40 safes raxl Yes accept foreign orders yos pay freighi information ash modef send seff addressed envefope nave Dlatt iviodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 rporated 615 So Gallatin Rd son TN 371 615 868-6811 Mon thru Sat am 500 pm R/C SALES AND SERVICE SPECIALPURPOSE* BATTERIES & CHARGERS SALES RADIO SYSTEMS FUTABA ROYAL ACCESSORIES FOR MOST RADIOS J Safety/Preston Continued page 14 model buddys model buddy kind enough hold pride joy start tt ask would foolish use stuff favorite airplane Well new fuel shossing up costs about $132 gallon can hought filling station guessed its gasoline fuel used almost i i-scale models Quad ras etc conclude months safety column relate incident constant threat RC modeler no matter proficient well takes care equipment came us via Go/il Coast Flier edited Art Charlotte Johnson Delrav Beach FL happened Florida Air Show Team about perform Florida Atlantic University An incident ten minutes before show time gives pause thought sound model engine starting parking lot couple hun dred yards takeoff site unexpected check Airtronics frequency monitor revealed transmitter 756411 mHz turned out couple young fellows readybuilt bad given no thought conse quences operating radio could hope see Shots Team models ready takeoff ease irresponsible ignorance cooperative ssbcn explained problem invited watch show come Out regrilar club field later wanted help putting models away after show again heard engine startup short time later very loud thud model destroyed itself Sure bard get across some people RC models just toys incident sound engine alerted Show Team members pres ence other modelers However intruders out earshot team would still have learned presence radio signal Aictronics frequency monitor other teams have wisdom purchase frequency monitor An ounce prevention ts worth pound cure John Preston 70/2 EIrira Ci. Falls Church VA 22042 Fun/Winter Continued page 20 take same engine propelter put -scale J-3 airplane will fly slower will cause engine lug down somewhat less peak horse power rpm prop will inefficient will produce less thrust given horsepower output could install dif ferent prop give efficient prop/air plane match probably 18 20-in diam eter would lug engine down would produce less horsepower answer problem either chain saw engine turn larger prop directly belt drive Author gear drive will turn larger prop yet allow engine run its peak horsepower rpm What means Dick concludes engine/airplane/propeller combination compromise larger slower sport-type Continued page 116 84 Model Aviation REPAIR SERVICE FOR HOBBY LOBBY EK LOG ICTROL F UTA BA HOBBY SHACK ROYAL PRO LINE TOLEDOI83 TWENTY-NINTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featuring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days APRIL10 lo presented Weak Signals RIC Club PO Box5772 Toledo Ohio 43613 FRIDAYgamto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm Fun/Winter Continued page 84 models may necessary use larger en gine turning larger prop below peak horsepower rpm order get adequate per formance out model significant point airplane/propeller/engine combination must selected give performance desire Because variables involved usually accom OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING INTRODUCING THE NISTARTERTM Pat Pending new cornpferly rvofrrtronary concept power gf ow pfugs modef cars foats airpfanes helicopters anything using tfre 15 ut Standard pfug glow engines Rechargable lOft tOOO tirrresl Fits pocket Works srdeways rr inverted Fits through cowfings Uses Head Lock TM plug adapter Stays pfug rrot irr propeffer lncf charger & instructiorts 90 day guarantee After rfrar anything faifs normal usagef wif repair replace $6 up hf full year! SEE DEALER OR CALL US BANK CARDS OK COD OK PAY SHfP PING SERVICE $2195 See Deafer 13506 Gfundundee Dr Herndon VA 22071 703f 435-5805 pUshed trial error Prop/plane combinations truly infinite Running engine ground best relative indication Dick doesnt mention prop unloading hut implicit said know prop turns up air sometimes hy 1000 rpm Only plane moves forward ap propriate airspeed does prop blade like wing section meet air proper angle attack 116 Model Aviation GONTULIKI TANKS PROFILEtCOM8A7RAT WIDE ft NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Gustrn Dliii lush Ingredients detailed brochure 50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road charleston Hgts. sc 29405 803-553-7169 GRANDE SCALE 21% ct lMZi- Retracting Landing Gear sa o Flaps FIberglass Cowl Tail Cone Flyingwires. 04 m S SEND TO LEE RICHTER I4O26 W MapleRidge Rood New Berlin WiecONLY SET S Sereow leaded OstartSSET 100 aq ft ineirrdrng Ptrset arrest Shipirert UPS Jolly Ray Marlstrom Britains Bill Hannan cant tell aint lookin Rays Altaira l3Yz-in.span rubber job has lifting-body 19%-in fuselage Weighs 125 oz plane dirty too big too heavy its prop power prop may par tially unload never unload labors like hod carrier just flails air Small en gines must scream props tend small diameters low pitch typical sport models 5 6-in pitches common 6-in generally considered dividing line between low high pitches Try counting 10-6 props see engines approxi mately 40 co displacement know high pitches get high gear like overdrive ship clean fast crate dived descending leg maneuver Low pitch low gear climbing hills accelerating quicklybut like roaring along Autobahn second gear High pitches keep socalled trainer coming fast under power lower pitch brakes approach DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP DEALER DISTRIBUTOR INQUIRIES INVITED 54, FNUINES THE BEGINNERS KITTEN AND EXPERTS TIGER 3Revolutionary snap wing eliminates bolts rubber bands GEMINI MODELS INC Complete kit $5495 dealer direct P0 Bo t t 68 Pnsac NJ 07055 Engine rpm prop diameter play veri table duet terms prop wash strikes against port side fuselage fin etc side profile calls shots high cabin low thrust line may lean right under power like pylon FF note effect slightly battered Kadet being expert find ship gets run ning right takeoff much heavier rudder applications needed especially crosswind left ailerons plus rudder required get zig-zagging runs left easily corrected crosswinds dont matter much nose wheel pro duces wide left turn taxiing takeoff true after occasional brief early touch two right rudder big Sniffer RC-Assist very high cabin leans right regardless torque Vagabond RC Assist turns left torque regardless prop wash Pylon Free Flights normally cant turn left safely under power some RC ships designed go pointed like lowwing Pattern jobs prop wash problem pilots argue never need offset engine thrust typical trainers usually demand right thrust sometimes offset thrust reversal big Sniffer turned right under power removed its right thrust ship became vicious rightit worse Apparently angle prop wash agalnst port side cabin encountered profile smaller angle right thrust present Continued page 120 PRODUCTS von ruc ntrcohh&ufl flflrI PA March 1983 117 speed making things less hectic coming over fence Flying Near Airports Careful Free Flight Radio Control flying near airports situation might involve Ihe possibility models being vicinity ot full-scale aircraft operations must avoidedor conducted eliminate dangerous situations Models should flown proximity full-scale aircraft operations unless flyer has someone else him sole purpose watching full-scale aircraft supervising flying prevent accident possibilities PROTECT YOUR RIGHT TO FLY Safe Flying No Accident Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers * Venturi Mufflers * Expansion Mufflers Helicopter Ball Mufflers Specialized Exhaust Systems Unsurpassed Wnrkmehin ormance Fun/Winter Continued page 116 Once tested fun effects props pylon IT Firecracker MAN circa 1950 Results contrary books tiny one-bladed prop K&B Infant 02 first 02 OK Cub 049 leaned pyloned Firecracker tight left sweeping turn Progressively increasing diame ters and/or pitch opened left power turn end line crate lean ing bard right Luckily missed prop would have looped ship ground full-octave torque prop wash effects Prop wash increases rapidly diameter friend delightful cabin-type rubberFine Quality Flying Models 4 Catalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 powered sport model preferred left/right patterns FF Gas produce S-transition minimized drift wind added rubber torque would tighten left increase climb argued would go right insteadand prop wash would effective torque did Prop wash mighty force given some surface work Such crude test methods used Citizen RC published MAN late 1940s know what improvement glow Arden 09 glow just coming would show over ignition tied crate long rubber strand aliowed accel erate stretching band perhaps 25 feet before crate snubbed stop wee bit unloading difference stretch tangible taching rpm rest Recommended prop sizes find engine best engine reach its max rpm peak power Richard Aley said hut put proper size crate displacement may make much noise go nowhere An inch diameter 7-4 8-4 15 may prove best plane comes alive Power thrust right engine/plane combination through engine may developing its ideal performance planes will fly better engines developing torque prop luggers buy en gines scream crate pleases thats counts works dont fix it doesnt cut mustard know lead sled properly balanced grossly mismatched its engine fine-tune props try extremely modest changes pitch and/or diameter Overpropping tricky thing infinitely likely ruin engine sustained use season high humidity and/or temperature nitro content fuel hot cold glow plugs other jazz have effects example once heavy 6-ft Live Wire Veco 29 summer required mighty heave 11-4 prop Alas since low pitch downthrust will make crate sometimes nose down before wing generates lift increasing speed ia square lift formula ship grazed ground rigid flight path before heading skyward winter 12-5 prop same ship would float off hand taking step climb steeply rocking gently like some huge rubber-powered ROG surprised see Bob Thompsons 120 Model Aviation Its FCS-4 Radio Designed Canadian governments target drone program approved US Armed Forces Training Command Full Command Systems has now brought cut ting edge Radio Control technology hobbiest N FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easeier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack 600mAH & 1200mAH extra Expandable F Full Command Systems 908 E Rosewood Spokane WA 99207 509 487-2122 Get install dont take off -- Ken Willard RCM SERVO GARD SERVO GARO monitors airborne flight battery pack voltage well radio signal received transmitter receiver malfunction detected part che system SERVO GARD reduces throttle automatically ample time before battery failure I safely land nodel SPECIFICATIONS size unit installed KPS-1 4 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Puise Unit shipped positive pulse systems negative pulse available upon request SERVO GARD comes complete pro-wired pigtails servo connectors choice installed Ispecify connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordoringl ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 6311 SW 2nd Street Margate FL 33063 ENGINEERING13051 910-0611 THE LANDING GEAR PEOPLE TIred kit landing gears dont lit year higgis prfpftly o & 0 Engineering can sflfC ynsr prohiemnl * Custuln built tour needs & specs gsaranteed fit * Streng & durable withstand toughest landing * 0 & 0 Engineering gear will wurk & keep higgie hying * In slack replacement gear tsr mast pspslsr models Byrnn Pills Christen Eagle CAP 21 Balsa USA J3 CUB Air Tech Pawnee Eagle Nasen Big Stick Chump Citabna B & mudels Snapper Stinger Snapper Tao photo page 18 December 1982 MA says Mark Fineman Fun won dered what Bob doing several rubber loops attached various fingers like some string puzzle taken 1980 FAC Nats Wright Field Dayton plane Keystone Bomber taken Cleveland plans Keystone Pirate Bomber original plan engine nacelles profiles Bob made three-dimensional Bob appears back-winding Mark goes unfamiliar prac flee pull out two loops rubber holding wind other backwards few turns loops placed prop hook automatically wind up something like braided motor automatically taking up slack might otherwise cause CG problems glide classy rubber stooge conven tional auto photo both Bob shared both stooge car Plans stooge appeared FAC News about year ago Bob tipped off well-kept secret mentioned years Maxecuter Meet will include Bill Winter event Last year Earl StahL Mark expressed diffi culty choosing between plans Mr Mulligan advised top longerons square corners rounded off assumed years ago before accurate drawings released Grumman F3F short-nosed pot-bellied Grumman does permit much rubber weve advised Mark wanted bipe era gay Navy markings might better swept-winged both wings Curtiss SOC-l lightened up modern techniques Any way should weird experience watching what good fliers FF Rubber Scale jobsour bread-and-butter mag projects days no could lift $15 worth groceries Eureka am really building two electrics Im beginnerif want answers follow Poling MB three great features issue saw last night As beginner Ill pass own experiences First Astro Flight has new hot armature two reduction-belt iSs have 13-8 prop 5500 rpm Don SrulIs magnificent Spitfire expect 1000 rpm boost possibly duration Well test fly Spit anon second updated system goes 6-ft Old Square Sides Antique Last night joined John Worth flew Buzzard Bombshell pack 16 sub-C cells old Astro 15 belt drive 14-6 prop OS 90 less full charge flew cold dusk 12 minutes Bill Poythress timed made altitude evaluation crude triangulation calculated got up least 800-plus feet maybe much 1100 feet power shut off glide about sport engine-powered RCjob bit noticeable sink flight 15 min quite possible aid warm air lift New Astro motors coming up will sur pass hot-winds just now appearing Skybo am using geared 05 Leisure electric motor swings 11-8 six sub-C cells look thermalling flights Leisure can give beyond 50% increase motor run 30% increase rpm geared 05 six perhaps March 1983 121 2 ff415 QUARTER MIDGEL Tiff NELSON 15 1st th & 1OVh complete brochure great engine & other quality competition products send 50 cents KUS TOM KRAFTSMANSHIP Box 2699 Laguna HWs CA 92653 Call 714 830-5162 Dealer inquiries invited riiroiuii DRLRIILt El MLL UIfltII IUN Heres equipment yoo need give yoor prop , balance--balance directions Carefully crafted top grade materials BUBBLE BALANCER accomodates 3/101/49/32 prop holes Other sizes available special order Dealers invited $1695 Add $t5B HOWARD B HUEBL DEPT ROS postage handling Mino add 4%sales taa No ttlBs Bo 02 Rt 0 Mankoto MN 00001 rOROER TOLL FREE 800-854-8411 IN CALIFORNIA 800-472-8456 IN LOS ANGELES 714963-9881 UnY p mall 18480 EANDILIER CIRCLE FOUNTAIN VALLEY CA 92708 Super Discounts Now PRICES GOOD THRU FEB 1983 POWER-START STARTER Powerful 12 VDC electric starter 049 ng ines planes cars & boats NO 1153862499 LIST $4995 FUTABA FP-4L 4 channel sysyam w th 3 servos full Nm-Cd operat servo reversing switches trays hardware frequency flag nasruct book $1999511999 &IL5 P-51 Mustang NO 526327 P-51Mustang Fun ScaleLIST $4495 R/C wood kit Span 51 Area 490 sqin. Engine 19 40 Radio 4 ch name address city I I statezipI mail order catalogs 18480 BANDILIEE CIRCLE I I FOUNTAIN VALLEY CA 928708 • UPEANUT SCALE UODEU I/ ZERO PIETENPOL PIPER CUB ANDRESON MUSTANGLACEY M-10 jPowred PRAIRIE BIRD 4 KIT $595 Kit $596 MILES M-18 ORUINE COUGAR GIPSY MOTH GANAGOBIE SPORT MODElS BABY ACE$649 ONE NITE 28$696 ONE NITE 16$596 STRINGLESS$496 PECK ROG$196 RADIO BLIMPS CONTROLLED II nd 13 FOOT LONGKITS OR READY TO FLY Now IN THREE COLORS GRAY ORANGE YELLOW Low PRICES seven sub-C cells new generation mo tors being developed both manufac turers Theres lots month Id like show some tips Bob Kopski appeared info sheet gave out Annual Electric Fly Hatfield PA wiring diagram SEAM Newsletter remarkable publication join SEAM want keep up $1000 Society Electric Aircraft Modelers 11632 Flamingo Dr Garden Grove CA 92644 Youll shocked Bill Winter 4426 Altura Ct Fairfax VA 22030 Zephyr 1100/Owens Continued page 30 nose fairing add F20 / 16 ply tongue slip-fit between fuselage sides Remove F 17 install wing now carve F17 match wing upper surface Install F17 hatch using 4-40 screw Finish carving F16 F17 obtain rounded smooth contour blends fuselage Install reinforcement blocks tow hook sport flying prefer simple bent screw hook can made cup hangers prefer compete use capture/releaseable hook shown August 1982 Model Aviation uses Fourmost hook easy-adjust method Install fuselage F12 filler F6 top sheeting Trial-fit tail permit alignment tail skid dorsal fin Carve sand fuselage corners rounded section shownjust enough expose FD- triangular stock Leave wing tail saddles flat extra strength competition fiber glass entire fuselage Starting tail apply layer l-oz cloth up F6 layer 4-oz cloth F6 F3 two layers 4-os cloth F4 nose block Use toilet paper soak up excess resin before cures minimize weight gain Sand resin/glass coating #120 grit wet-or-dry paper resin tends clog paper add little dishwashing detergent water wetsand Apply thin final coat resin plan paint fuselage recommend Sand final coating #180 wet-or-dry Spray-paint favorite color material Install servo solder threaded end-fittings control wire Trial-fit tail surfaces control horns cutting wires length Covering encouraged use little imagination selecting color scheme Use several colors have large areas contrasting dark light tones underside prefer have fuselage inner wing panels vertical tail light shade wing tips horizontal tail dark get big boomer three dark areas spaced wide apart sepa rated light tones will help maintain visual contact MonoKote preferred covering material However new Coverite Micafilm will save couple ounces considerably tougher Micafilm seal down edges CA glue before shrinking not-so-hot iron tempera ture Omit covering time lower extension fin spar also stab center line attaches fuselage Separately cover rudder ele vator spoilers attach yet After shrinking covering go over ribs other framework seal down truly necessary wing undercamber Tail assembly Temporarily bolt wing fuselage serve reference cor rect alignment horizontal vertical stabilizers Place horiontal stab posi tion aft fuselage view rear fair distance aligned sand high side fuselage Apply 5-mm epoxy stab saddle clamp place viewing angles adjusting necessary perfect alignment including fin slot should straight ahead Connect elevator control clevis elevator horn Apply heavy coat Vaso line mid-portion elevator joiner wire apply 5-mm epoxy stab around slot joinerin area Vasoline cured epoxy serves zero-slop bushing 122 Model Aviation IN STOCK POR iavumuisei c mir-iviEii New 22 CID QUADRA$10495 Rag 22 QUADRA *6496 wIlt Brtslgheila Flywheel *11496 Reg 22 QUADRA POWER ASSEMBLY ONLY*5496 QUADRA REPAIR*1000 pins parts PEsW RADIAL ENGINES Fleet*2296 JIm Messer ERCOUPSPLANS $2296 KIT *22996 Jim Memr TOMAHAWKPLANS $2296 KIT *24996 BALSA BASSWOOD 111 slasal36% OFF Concept FLEETKIT $17996 FG COWL $1996 QUADRA Snal tanksiSo *69622oz *796 vICKERS LEWIS MACHINE GUN KITS$1496 ALL CECONITE PRODUCTS10% OFF PLANS SUPER STEARMAN IGodfrsyl*3600 STARDUSTER TOO IBrIsIghelial*2996 scala J3 CUB mallS FLEET IConcept*2996 VOLKSPLANE IChlckan Charilel*2296 FLY BABY $1596 SE-B IRanechl *2496 COCKPIT KITS Tomahawk F4U-1 SpItfire $2196 Ercoupa *1996 Stearmnan *2096 Citabns *2496 J3 Cab *1995 ME109 $2150 Flees *2096 FIBERGLASS ARROW SHAFTS W16~ 622 1g61*1000 24-Hour ServIce. Add $250 postage Send Bank Check Money Order t JIM MESSERS QUALITY MODEL PRODUCTS 106 Valley View Dr. Allegany NY 14706 $100 NE 6194424636 eta 4695075 LA MESA CA 92041 FGK SERIES FP-5FGK 1U3 NEW NEW YEARS ready-HA j POSTAGE AND HANDLING CHARGES 1U I$000 $2500 add $300I I$2501 0 add $400I Over $5000 add $500I El California retidents add 6% state sales tax I

NOISE IS DOWNER flying sites lost put together could outstretch Great Chi nese Wall dismay over unreasonable neighbors acute ever Weve study after study persist thinking weve done part Horsefeathers have never really faced up prob lem may have some relatively good mufflers pure luck happen pur chase engine reasonably quiet wonders about because pipes noisy proves engine can run quietly think noisy old lady lives 4Yz miles away lost site true bomber-raid cacaphony lawn mowers fact decibel readings show local traffic louder models distance Thats irrelevant engines have distinc tive tonesand citizens large dont share love heavenly sound mufflers first decreed modelers sought mufflers decreased power least legal frequently cri terion still muffler widely used eloquentiy proves philosophy still us does point sound propelled vast distances sharp bark bedeviled manufacturer caught between rock hard place because cus tomers oppose efforts quiet down too much power loss know loss flying sites something happens other guy never us Until. muffler engine manufacturers fail produce reasonably quiet engines have learned would buy engines would turn competitive brand shall first modelers fault manu facturers problem curable dont hold breath probably realistic starting point officialdom pro gram effort comparable devotion pursue things like new RC fre quencies Are safe site secure People dont know safe sites gone Will next consumer industry might try getting heads straight am involved folks distant flying place save site first flew housing area com plaints came pointed out No overflies indeed distant barely sees houses Worse noise complalnts also questioned safety site remain active may fliers will have police model decibel meter given distance run safety checks like state auto inspection plane must bear sticker related items have checked off Nat urally such situation some members react persecution lets nuke-em attitude including chicken feliow mem bers would rather fly dead Touch-andgoes Its early Wednesday morning late November stare out window Hermes rattles alongnoting straight-up plume wood smoke neighbors chimney motionless trees leaden gray sky weatherman says will warm up later Vagabond RC Assist primed go am thinking King Arthur Knights Round Table galloped off noble missions Raiders Lost Ark Since began editor Bill Barnes 1936 until very moment mail has dominated people looking plans accur ate mind strange all-but-forgot ten airplanes sources information clues things pub lished An unending stream people write sight magazines column ists folks get mentioned print Find ing what want life-and-death matter desperate researchers mention some guys needbecause cant help another wave letters follows guys over world have plans back issues know something saw print feels like marriage broker since nature abhors vacuum won der some model air museum library reference service has established Rubber Scalers really have grapevine know about real plane ever existed swap plans pictures old articles clippings sit librariesyoud sur prised sits dreams National Air & Space Museums library ferret out color chips pieces genuine fabric preeminent historians find old kits have plans collectively just about 16 Model Aviation just fun Bill Winter George Meyer Shortly after columns coverage George Meyers Lii Toot array magnificent home-built model en gines George passed away George bril liant career aviation lodestone wisdom attracted people world wide George mechanical genius merely extraordinary machinist can see famous Lii Toot Experimental Aircraft Assn Museum family estab lishing trophy-award EAA Winter sug gests clubs would well generate events genuine community service contributing Cancer Fund stuff dreams made Merely typical master Rubber Scaler Bill Noonan 1-in-scale de Havilland Hawk Moth rewards look closelyscale drag wires wing dummy tanks though hidden covered spoked wheels mud spray shield de tailed exhaust cowling sliced ribs lightness cant see him pic pilot wears peaked cap has startling life-like expression Noonan fine artist too Ultimate RC-Assist content sitting duffs between FF meets Hunters Bill Bob installed three-channel Micro mini RC ABC Rossi 65 Satellite operate small rudder elevator actuate K&B snap-off chop engine Bill launches RC-Assist 80-degree climb dad Bob tries keep knees knocking Climb slightly left-wing-lowbut turn angle crate bores up rock-steady Bob chops power pushes over glide trims elevator lift-finding circles ship distant speck brings back anotherand anotherflight way have cake eat too / Above Left Bill Hunter left Bob Huntereach high-soaring eagle Bills pure FF VIT AR Bobs RC-Assist Above Right Large air-flow exit rear widened venturi-type pylon wing mount Bills FF both similar respect Below Left Another view venturi pylon latest Satellitesand powerful Rossi 65 Fingers go 1/64 ply tube provide hold hand-launching Below Right Small rudder elevator provide flight control needed Bobs fast RC-Assist Satellite models clothes Bob Benjamin would 10 best-dressed men Since devotes much flying time showing kidsand curious adults toohow different kinds aircraft fly show some offbeat craft operate out schoolyards Above Left Veco Brave CL restored friends pile junk So old unknown whether Veco kit later Dumas release Its Stunter early 1950s Appropriately engine Forster G29bought Ray Chalker local MECA coordinator MECA engine collectors outfit Right Powered spark-ignition O&R 60 Bobs first Old-Timer really gets attention kids schoolyard flying Above Benjamins 54-in Comet Taylorcratt reinforced covered colored silk clear butyrate Three servos Enya 09 After 40 flights being converted scale dihedral tail surfaces 4-channel scale paint scheme Comet 50-in series great Left Original Y2A CL along lines famous Magician demonstrates kids what can done 049 plastic RTF does inside outside maneuvers light breeze AIR OUT THRU BATTERY AS EXAMPLE ONLY WRAP WITH IRON-ON CLOTH ___ RLK METAL OR PLASTIC MOTORTOP VIEW MOUNT STRAPS USE 4-40 X3/I6 IN MOTOR JF1 #2 SHEET METAL INIIt=4LiL PLYWOOD FORMERAM~UJ JLf ML 12 SIDE VIEW KRC RECOMMENDED MOTOR MOUNT 12 CUT SNUG-FITTING HOLES IN I/B PLYNOTE REAR FORMER MAY BE POSI FORMERS TO SUPPORT MOTOR OFFSETTIONED AT OR AT 2 IN FRONT OR MOTOR HOLE IN REAR FORMER FORIN BACK OF MOTOR COOLING HOLE DESIRED SIDE AND/OR DOWN THRUSTRE SURE THERE IS I/2DIA AIR SHOWN EXAGGERATED HEREEXIE HOLE MIN IN FUSE BOTTOM TYPICAL ELECTRIC MOTOR-BATTERY WIRING DIAGRAM FOR MOTORS TO15 SIZE 8 BATTERY PACKS OF UP TO 12-12 AMP HR CELLS RAPID INTERFERENCE CAPACITOR PARTS LIST-PARTS LIST ICwetI WIREIAor lB GA stranded copperMICRO SWITCHI5 AMP-250 VAC-Unjnoo 3 TMT 15-4 RADIO INTERFERENCE CAPACITOR- 01 MPG lnicroeqoinolent IRADIO SHACK 275-OIBI forodl redoce high frequency radio isterfereeceCHARGE SOCKET Switcltoraft #712A egoloolent Note low frequency interference occoro odd toCHARGE PLUG SwtcBcroft *160 eqoioolent notor o 47 MPG eloctrolylic sore obseronARMING SWITCH- Sohniniatore single pole single polorily portthrow ISPSTI 10 AMP125 VAC ROOIO SHACK #275524 MOTOR BRAKE RESISTOR25 124 27ok1 non wottor eqojooleet FUSE ATC 20 AMP adopt B flog connectorsCONN. MOTOR B BATTERY Moles 2 pin sloe per CONN. MICRO SWITCH B FUSE IBT flog type Waldotorecommended motor nonoyactorer Copied firsl SEAM newsletter ISOCIETY OF ELECTRIC AIRCRAFT MODELERS Scale model ever kitted before born Aeronca K comes mind Since early post-WW II days series 50-in Scale flying models Comet has remained popular Comet its early days designer tal ent subsequent producers lumped gether Monogram Top Flite Carl Gold berg models generated ex-Comet people Comet great creators worked like Joe Konefes Bombshell fame Started three guys during late 1920s legend has total starting capital about $200 principals laundry manby WW II 500 em ployees biggest model plane manufact urer world has seen Among 50-in fliers T-Craft alone has great Rubber FF Gas Radio Control has flown indoors RC mentioned Hurst Bowers modi fied Aeronca K Came letter artist Bob Benjamin gifted modeler full-scale plot wanted build Quarter Scaler Sources given pre cise enough other readers told us Bob Lopshire definitive Quarter Scale plan turned out given wellknown Scale flier Bob Karlsson real K check out plans general distribution told you ran Bob Karlsson might try bended-knee approach So Karlsson sent plansI just opened Three readers sent help Benjamin Hobby Helpers plans actual tearsheets early American Modeler Which bit tearing because often flown talented late Ed Yulke designed knew crate quite well beautifullyengineered airplane Ed engineer Luscombe later Republic cas caded escapements No cant send plans alas prompted letter Dick Glea son Gleason Enterprises 1704 29th Ave SE Rt 2 Box 125 Austin MN 55912 Dick operates plans-finder service offers information cost 560 different makes 1600 models line draw ings have published over past 50 years plan form During 1935 writer published rubber-powered Waco D So prove Dicks point plan redrawn sheet number plates MAN Dick claims corrects errors clarifies construction did excellent job believe Enclosed 3-view mysterious Stin son PT tandem low wingI drawn published somewhere What scale asked dont remember doing drawing real plane existed Dick has doing five yearsand never heard him Three years ago 50 old kit plans plus 42 RC projectsinked Mylarwere des troyed fire like Phoenix rose ashes Bob Benjamin incidentally Cessna 140 owner chided us confusion about flying 120 days yore Seems confused 140 flaps subconsciously assuming 170 140 have several occasions after careful checkout flown 140 Bob tells us being abandoned grass field air port now RC site give guys dont often get near big ones chance check out emphasizelots Continued page 20 18 Model Aviation KRC RECOMMENDED BATTERY INSTALLATION 1/16 PLY OR 1/16 HARD BALSA 0 Top Quality Name Can Depend 4-40 STEEL KWIK-LINKS 9 4 4-40 links con structed top quality spring steel control linkage hook-ups Cat No 3042 $100 / / Cat No 306$75 ea NICKEL PLATED SOLDER LINKS new nickel soldering Cat No 305 4-40 solder links plated easy 2 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY 1/4 scale HINGES Easy install precisionStrong smooth andBuilt heavy load DUBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free locked --the small the1/4 scale applications checked for-heavy duty hinges smoothness theCsixThey use removable eLIjj3/64 dia cotter pin tory-holes eacho side max imum holding o 0 0 60 000 Cat No 118 6 per pkg $100 Cat No 116 6 per pkg Cat No 257 Cat No 119 l5perpkg $195Cat No 117 l5perpkg l5perpkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED DURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 -1/4243 7/32 141 3/16 139-1/4 136 3/32 1371/16 455/32 k Heavy duty $1 00 2 per set -J--------------------------- $80 per set sets 4 J HEAVY DUTY 4-40 BALL LINK IIflT/nl Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse age minutes dr ing 3/16 hole Cat No 203$1 /*fsl MO DUeBRO SNAP-ON BALL LINKS V Bolt S85 Threaded $85 Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight Excellent offset steering servo throttle hook-ups Cat No 180 Cat No 181 Cat No 182 DUeBRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 DU-BRO 4-40 KWIK-LINKS 12 rod included Fun/Winter Continued page 18 care taken operating big little close proximity Last time happened fel low stuck transmitter hand standing airplane started tak ing pictures Lets hope some mag doesnt run gag picture anti-super-monster people will blow stacks Bob has cathoilc interests own modeling show pix portion mixed fleet really fly big Buzzard RC-Assist out little schoolyard Bob goes lots attention neighborhood kids have comments model press about getting types models areas kids non-modelers can see idea right markfor modelers know what doing Seeing newcomer wipe out RC trainer against side school what want show general public make practice flying something like OldTimer Control Line job small Scaletype RC schoolyard least once week weather permitting making practice take much time necessary talk kids Occasionally homeown ers walks over chat three years have never negative comment will send some stuff couple sport Free Flights hopefully Pea nut rubber job wife building loves full-scale 140 dislikes model engines has get near thinks Trexler wheels super beginning some nice work small Rubber Scale building projects hear Bob doing some model mag cover paintings too Just saw Model Builder man seasons Which prop recent interest comments others concerning engine stroke torque prop size etc says Richard Aley Honolulu what ics worth would like add comments engine has its own unique set horsepower torque vs rpm curves Gen erally rpm peak horsepower same peak torque So what say have use prop will allow engine run its peak horsepower rpm live happily ever after Right Yes youre running engine bench What seems have overlooked Dick continues much horse power torque engine capable pro ducing much converted thrust given airplane propeller combina tion other words propeller efficiency airplane given flight condi tion will propeller will give maximum efficiency converting horse power thrust order make har monious relationship engine used must able turn efficient propeller engines peak horsepower rpm have Schnuerle-ported 60 must turn around 15000 rpm develop close peak horsepower mount con temporary Pattern airplane use 11-7 11-8 prop engine will develop close its peak horsepower air prop will fairly efficient converting horsepower thrust airplane will perform very well aithough will fly quite fast Continued page 84 20 Model Aviation NEW Discriminate Scale Fliers Demand Dave Platt m perfectionist.my kits prove reputation finest models RC scale has founded upon careful attention detail period over twenty years fact Im particular about kits theyre available personally make kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly THE ULTIMATE legendary beauty efficiency Spitfire 1/5 scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 gIn engine Maximizer ultimate Spitfire provide intense experience sophisticated R/C $ 47 -delerSpan 88 Length 78Weight 1520 lbs e%er%cjmnitt melO9% Grand bold flies great staying easily transportable 11/5 scale 7 span over 1000 sq ins gg engines Bucker Jungmeister regular direct drive engines 60 gg 65 span 11/4 scalel ace aerobatic biplane time Still fits car $139 $179 New 1/4 Scale Pilot &$139 Supplied unpaint- o ed comes in- Available struction booklet 1/5 116 scale WorldRetracting $3 War II Fighter Pilots full Conspietesysterri $t39 figure515heavie ships 110W TO ORDERDireci rnannfacturer mo markapi Write caliwe accepi check money order Master Charge Visa cards pay UPS anysshere ike USA fFforida residenis add 40 safes raxl Yes accept foreign orders yos pay freighi information ash modef send seff addressed envefope nave Dlatt iviodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 rporated 615 So Gallatin Rd son TN 371 615 868-6811 Mon thru Sat am 500 pm R/C SALES AND SERVICE SPECIALPURPOSE* BATTERIES & CHARGERS SALES RADIO SYSTEMS FUTABA ROYAL ACCESSORIES FOR MOST RADIOS J Safety/Preston Continued page 14 model buddys model buddy kind enough hold pride joy start tt ask would foolish use stuff favorite airplane Well new fuel shossing up costs about $132 gallon can hought filling station guessed its gasoline fuel used almost i i-scale models Quad ras etc conclude months safety column relate incident constant threat RC modeler no matter proficient well takes care equipment came us via Go/il Coast Flier edited Art Charlotte Johnson Delrav Beach FL happened Florida Air Show Team about perform Florida Atlantic University An incident ten minutes before show time gives pause thought sound model engine starting parking lot couple hun dred yards takeoff site unexpected check Airtronics frequency monitor revealed transmitter 756411 mHz turned out couple young fellows readybuilt bad given no thought conse quences operating radio could hope see Shots Team models ready takeoff ease irresponsible ignorance cooperative ssbcn explained problem invited watch show come Out regrilar club field later wanted help putting models away after show again heard engine startup short time later very loud thud model destroyed itself Sure bard get across some people RC models just toys incident sound engine alerted Show Team members pres ence other modelers However intruders out earshot team would still have learned presence radio signal Aictronics frequency monitor other teams have wisdom purchase frequency monitor An ounce prevention ts worth pound cure John Preston 70/2 EIrira Ci. Falls Church VA 22042 Fun/Winter Continued page 20 take same engine propelter put -scale J-3 airplane will fly slower will cause engine lug down somewhat less peak horse power rpm prop will inefficient will produce less thrust given horsepower output could install dif ferent prop give efficient prop/air plane match probably 18 20-in diam eter would lug engine down would produce less horsepower answer problem either chain saw engine turn larger prop directly belt drive Author gear drive will turn larger prop yet allow engine run its peak horsepower rpm What means Dick concludes engine/airplane/propeller combination compromise larger slower sport-type Continued page 116 84 Model Aviation REPAIR SERVICE FOR HOBBY LOBBY EK LOG ICTROL F UTA BA HOBBY SHACK ROYAL PRO LINE TOLEDOI83 TWENTY-NINTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featuring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days APRIL10 lo presented Weak Signals RIC Club PO Box5772 Toledo Ohio 43613 FRIDAYgamto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm Fun/Winter Continued page 84 models may necessary use larger en gine turning larger prop below peak horsepower rpm order get adequate per formance out model significant point airplane/propeller/engine combination must selected give performance desire Because variables involved usually accom OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING INTRODUCING THE NISTARTERTM Pat Pending new cornpferly rvofrrtronary concept power gf ow pfugs modef cars foats airpfanes helicopters anything using tfre 15 ut Standard pfug glow engines Rechargable lOft tOOO tirrresl Fits pocket Works srdeways rr inverted Fits through cowfings Uses Head Lock TM plug adapter Stays pfug rrot irr propeffer lncf charger & instructiorts 90 day guarantee After rfrar anything faifs normal usagef wif repair replace $6 up hf full year! SEE DEALER OR CALL US BANK CARDS OK COD OK PAY SHfP PING SERVICE $2195 See Deafer 13506 Gfundundee Dr Herndon VA 22071 703f 435-5805 pUshed trial error Prop/plane combinations truly infinite Running engine ground best relative indication Dick doesnt mention prop unloading hut implicit said know prop turns up air sometimes hy 1000 rpm Only plane moves forward ap propriate airspeed does prop blade like wing section meet air proper angle attack 116 Model Aviation GONTULIKI TANKS PROFILEtCOM8A7RAT WIDE ft NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Gustrn Dliii lush Ingredients detailed brochure 50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road charleston Hgts. sc 29405 803-553-7169 GRANDE SCALE 21% ct lMZi- Retracting Landing Gear sa o Flaps FIberglass Cowl Tail Cone Flyingwires. 04 m S SEND TO LEE RICHTER I4O26 W MapleRidge Rood New Berlin WiecONLY SET S Sereow leaded OstartSSET 100 aq ft ineirrdrng Ptrset arrest Shipirert UPS Jolly Ray Marlstrom Britains Bill Hannan cant tell aint lookin Rays Altaira l3Yz-in.span rubber job has lifting-body 19%-in fuselage Weighs 125 oz plane dirty too big too heavy its prop power prop may par tially unload never unload labors like hod carrier just flails air Small en gines must scream props tend small diameters low pitch typical sport models 5 6-in pitches common 6-in generally considered dividing line between low high pitches Try counting 10-6 props see engines approxi mately 40 co displacement know high pitches get high gear like overdrive ship clean fast crate dived descending leg maneuver Low pitch low gear climbing hills accelerating quicklybut like roaring along Autobahn second gear High pitches keep socalled trainer coming fast under power lower pitch brakes approach DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP DEALER DISTRIBUTOR INQUIRIES INVITED 54, FNUINES THE BEGINNERS KITTEN AND EXPERTS TIGER 3Revolutionary snap wing eliminates bolts rubber bands GEMINI MODELS INC Complete kit $5495 dealer direct P0 Bo t t 68 Pnsac NJ 07055 Engine rpm prop diameter play veri table duet terms prop wash strikes against port side fuselage fin etc side profile calls shots high cabin low thrust line may lean right under power like pylon FF note effect slightly battered Kadet being expert find ship gets run ning right takeoff much heavier rudder applications needed especially crosswind left ailerons plus rudder required get zig-zagging runs left easily corrected crosswinds dont matter much nose wheel pro duces wide left turn taxiing takeoff true after occasional brief early touch two right rudder big Sniffer RC-Assist very high cabin leans right regardless torque Vagabond RC Assist turns left torque regardless prop wash Pylon Free Flights normally cant turn left safely under power some RC ships designed go pointed like lowwing Pattern jobs prop wash problem pilots argue never need offset engine thrust typical trainers usually demand right thrust sometimes offset thrust reversal big Sniffer turned right under power removed its right thrust ship became vicious rightit worse Apparently angle prop wash agalnst port side cabin encountered profile smaller angle right thrust present Continued page 120 PRODUCTS von ruc ntrcohh&ufl flflrI PA March 1983 117 speed making things less hectic coming over fence Flying Near Airports Careful Free Flight Radio Control flying near airports situation might involve Ihe possibility models being vicinity ot full-scale aircraft operations must avoidedor conducted eliminate dangerous situations Models should flown proximity full-scale aircraft operations unless flyer has someone else him sole purpose watching full-scale aircraft supervising flying prevent accident possibilities PROTECT YOUR RIGHT TO FLY Safe Flying No Accident Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers * Venturi Mufflers * Expansion Mufflers Helicopter Ball Mufflers Specialized Exhaust Systems Unsurpassed Wnrkmehin ormance Fun/Winter Continued page 116 Once tested fun effects props pylon IT Firecracker MAN circa 1950 Results contrary books tiny one-bladed prop K&B Infant 02 first 02 OK Cub 049 leaned pyloned Firecracker tight left sweeping turn Progressively increasing diame ters and/or pitch opened left power turn end line crate lean ing bard right Luckily missed prop would have looped ship ground full-octave torque prop wash effects Prop wash increases rapidly diameter friend delightful cabin-type rubberFine Quality Flying Models 4 Catalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 powered sport model preferred left/right patterns FF Gas produce S-transition minimized drift wind added rubber torque would tighten left increase climb argued would go right insteadand prop wash would effective torque did Prop wash mighty force given some surface work Such crude test methods used Citizen RC published MAN late 1940s know what improvement glow Arden 09 glow just coming would show over ignition tied crate long rubber strand aliowed accel erate stretching band perhaps 25 feet before crate snubbed stop wee bit unloading difference stretch tangible taching rpm rest Recommended prop sizes find engine best engine reach its max rpm peak power Richard Aley said hut put proper size crate displacement may make much noise go nowhere An inch diameter 7-4 8-4 15 may prove best plane comes alive Power thrust right engine/plane combination through engine may developing its ideal performance planes will fly better engines developing torque prop luggers buy en gines scream crate pleases thats counts works dont fix it doesnt cut mustard know lead sled properly balanced grossly mismatched its engine fine-tune props try extremely modest changes pitch and/or diameter Overpropping tricky thing infinitely likely ruin engine sustained use season high humidity and/or temperature nitro content fuel hot cold glow plugs other jazz have effects example once heavy 6-ft Live Wire Veco 29 summer required mighty heave 11-4 prop Alas since low pitch downthrust will make crate sometimes nose down before wing generates lift increasing speed ia square lift formula ship grazed ground rigid flight path before heading skyward winter 12-5 prop same ship would float off hand taking step climb steeply rocking gently like some huge rubber-powered ROG surprised see Bob Thompsons 120 Model Aviation Its FCS-4 Radio Designed Canadian governments target drone program approved US Armed Forces Training Command Full Command Systems has now brought cut ting edge Radio Control technology hobbiest N FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easeier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack 600mAH & 1200mAH extra Expandable F Full Command Systems 908 E Rosewood Spokane WA 99207 509 487-2122 Get install dont take off -- Ken Willard RCM SERVO GARD SERVO GARO monitors airborne flight battery pack voltage well radio signal received transmitter receiver malfunction detected part che system SERVO GARD reduces throttle automatically ample time before battery failure I safely land nodel SPECIFICATIONS size unit installed KPS-1 4 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Puise Unit shipped positive pulse systems negative pulse available upon request SERVO GARD comes complete pro-wired pigtails servo connectors choice installed Ispecify connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordoringl ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 6311 SW 2nd Street Margate FL 33063 ENGINEERING13051 910-0611 THE LANDING GEAR PEOPLE TIred kit landing gears dont lit year higgis prfpftly o & 0 Engineering can sflfC ynsr prohiemnl * Custuln built tour needs & specs gsaranteed fit * Streng & durable withstand toughest landing * 0 & 0 Engineering gear will wurk & keep higgie hying * In slack replacement gear tsr mast pspslsr models Byrnn Pills Christen Eagle CAP 21 Balsa USA J3 CUB Air Tech Pawnee Eagle Nasen Big Stick Chump Citabna B & mudels Snapper Stinger Snapper Tao photo page 18 December 1982 MA says Mark Fineman Fun won dered what Bob doing several rubber loops attached various fingers like some string puzzle taken 1980 FAC Nats Wright Field Dayton plane Keystone Bomber taken Cleveland plans Keystone Pirate Bomber original plan engine nacelles profiles Bob made three-dimensional Bob appears back-winding Mark goes unfamiliar prac flee pull out two loops rubber holding wind other backwards few turns loops placed prop hook automatically wind up something like braided motor automatically taking up slack might otherwise cause CG problems glide classy rubber stooge conven tional auto photo both Bob shared both stooge car Plans stooge appeared FAC News about year ago Bob tipped off well-kept secret mentioned years Maxecuter Meet will include Bill Winter event Last year Earl StahL Mark expressed diffi culty choosing between plans Mr Mulligan advised top longerons square corners rounded off assumed years ago before accurate drawings released Grumman F3F short-nosed pot-bellied Grumman does permit much rubber weve advised Mark wanted bipe era gay Navy markings might better swept-winged both wings Curtiss SOC-l lightened up modern techniques Any way should weird experience watching what good fliers FF Rubber Scale jobsour bread-and-butter mag projects days no could lift $15 worth groceries Eureka am really building two electrics Im beginnerif want answers follow Poling MB three great features issue saw last night As beginner Ill pass own experiences First Astro Flight has new hot armature two reduction-belt iSs have 13-8 prop 5500 rpm Don SrulIs magnificent Spitfire expect 1000 rpm boost possibly duration Well test fly Spit anon second updated system goes 6-ft Old Square Sides Antique Last night joined John Worth flew Buzzard Bombshell pack 16 sub-C cells old Astro 15 belt drive 14-6 prop OS 90 less full charge flew cold dusk 12 minutes Bill Poythress timed made altitude evaluation crude triangulation calculated got up least 800-plus feet maybe much 1100 feet power shut off glide about sport engine-powered RCjob bit noticeable sink flight 15 min quite possible aid warm air lift New Astro motors coming up will sur pass hot-winds just now appearing Skybo am using geared 05 Leisure electric motor swings 11-8 six sub-C cells look thermalling flights Leisure can give beyond 50% increase motor run 30% increase rpm geared 05 six perhaps March 1983 121 2 ff415 QUARTER MIDGEL Tiff NELSON 15 1st th & 1OVh complete brochure great engine & other quality competition products send 50 cents KUS TOM KRAFTSMANSHIP Box 2699 Laguna HWs CA 92653 Call 714 830-5162 Dealer inquiries invited riiroiuii DRLRIILt El MLL UIfltII IUN Heres equipment yoo need give yoor prop , balance--balance directions Carefully crafted top grade materials BUBBLE BALANCER accomodates 3/101/49/32 prop holes Other sizes available special order Dealers invited $1695 Add $t5B HOWARD B HUEBL DEPT ROS postage handling Mino add 4%sales taa No ttlBs Bo 02 Rt 0 Mankoto MN 00001 rOROER TOLL FREE 800-854-8411 IN CALIFORNIA 800-472-8456 IN LOS ANGELES 714963-9881 UnY p mall 18480 EANDILIER CIRCLE FOUNTAIN VALLEY CA 92708 Super Discounts Now PRICES GOOD THRU FEB 1983 POWER-START STARTER Powerful 12 VDC electric starter 049 ng ines planes cars & boats NO 1153862499 LIST $4995 FUTABA FP-4L 4 channel sysyam w th 3 servos full Nm-Cd operat servo reversing switches trays hardware frequency flag nasruct book $1999511999 &IL5 P-51 Mustang NO 526327 P-51Mustang Fun ScaleLIST $4495 R/C wood kit Span 51 Area 490 sqin. Engine 19 40 Radio 4 ch name address city I I statezipI mail order catalogs 18480 BANDILIEE CIRCLE I I FOUNTAIN VALLEY CA 928708 • UPEANUT SCALE UODEU I/ ZERO PIETENPOL PIPER CUB ANDRESON MUSTANGLACEY M-10 jPowred PRAIRIE BIRD 4 KIT $595 Kit $596 MILES M-18 ORUINE COUGAR GIPSY MOTH GANAGOBIE SPORT MODElS BABY ACE$649 ONE NITE 28$696 ONE NITE 16$596 STRINGLESS$496 PECK ROG$196 RADIO BLIMPS CONTROLLED II nd 13 FOOT LONGKITS OR READY TO FLY Now IN THREE COLORS GRAY ORANGE YELLOW Low PRICES seven sub-C cells new generation mo tors being developed both manufac turers Theres lots month Id like show some tips Bob Kopski appeared info sheet gave out Annual Electric Fly Hatfield PA wiring diagram SEAM Newsletter remarkable publication join SEAM want keep up $1000 Society Electric Aircraft Modelers 11632 Flamingo Dr Garden Grove CA 92644 Youll shocked Bill Winter 4426 Altura Ct Fairfax VA 22030 Zephyr 1100/Owens Continued page 30 nose fairing add F20 / 16 ply tongue slip-fit between fuselage sides Remove F 17 install wing now carve F17 match wing upper surface Install F17 hatch using 4-40 screw Finish carving F16 F17 obtain rounded smooth contour blends fuselage Install reinforcement blocks tow hook sport flying prefer simple bent screw hook can made cup hangers prefer compete use capture/releaseable hook shown August 1982 Model Aviation uses Fourmost hook easy-adjust method Install fuselage F12 filler F6 top sheeting Trial-fit tail permit alignment tail skid dorsal fin Carve sand fuselage corners rounded section shownjust enough expose FD- triangular stock Leave wing tail saddles flat extra strength competition fiber glass entire fuselage Starting tail apply layer l-oz cloth up F6 layer 4-oz cloth F6 F3 two layers 4-os cloth F4 nose block Use toilet paper soak up excess resin before cures minimize weight gain Sand resin/glass coating #120 grit wet-or-dry paper resin tends clog paper add little dishwashing detergent water wetsand Apply thin final coat resin plan paint fuselage recommend Sand final coating #180 wet-or-dry Spray-paint favorite color material Install servo solder threaded end-fittings control wire Trial-fit tail surfaces control horns cutting wires length Covering encouraged use little imagination selecting color scheme Use several colors have large areas contrasting dark light tones underside prefer have fuselage inner wing panels vertical tail light shade wing tips horizontal tail dark get big boomer three dark areas spaced wide apart sepa rated light tones will help maintain visual contact MonoKote preferred covering material However new Coverite Micafilm will save couple ounces considerably tougher Micafilm seal down edges CA glue before shrinking not-so-hot iron tempera ture Omit covering time lower extension fin spar also stab center line attaches fuselage Separately cover rudder ele vator spoilers attach yet After shrinking covering go over ribs other framework seal down truly necessary wing undercamber Tail assembly Temporarily bolt wing fuselage serve reference cor rect alignment horizontal vertical stabilizers Place horiontal stab posi tion aft fuselage view rear fair distance aligned sand high side fuselage Apply 5-mm epoxy stab saddle clamp place viewing angles adjusting necessary perfect alignment including fin slot should straight ahead Connect elevator control clevis elevator horn Apply heavy coat Vaso line mid-portion elevator joiner wire apply 5-mm epoxy stab around slot joinerin area Vasoline cured epoxy serves zero-slop bushing 122 Model Aviation IN STOCK POR iavumuisei c mir-iviEii New 22 CID QUADRA$10495 Rag 22 QUADRA *6496 wIlt Brtslgheila Flywheel *11496 Reg 22 QUADRA POWER ASSEMBLY ONLY*5496 QUADRA REPAIR*1000 pins parts PEsW RADIAL ENGINES Fleet*2296 JIm Messer ERCOUPSPLANS $2296 KIT *22996 Jim Memr TOMAHAWKPLANS $2296 KIT *24996 BALSA BASSWOOD 111 slasal36% OFF Concept FLEETKIT $17996 FG COWL $1996 QUADRA Snal tanksiSo *69622oz *796 vICKERS LEWIS MACHINE GUN KITS$1496 ALL CECONITE PRODUCTS10% OFF PLANS SUPER STEARMAN IGodfrsyl*3600 STARDUSTER TOO IBrIsIghelial*2996 scala J3 CUB mallS FLEET IConcept*2996 VOLKSPLANE IChlckan Charilel*2296 FLY BABY $1596 SE-B IRanechl *2496 COCKPIT KITS Tomahawk F4U-1 SpItfire $2196 Ercoupa *1996 Stearmnan *2096 Citabns *2496 J3 Cab *1995 ME109 $2150 Flees *2096 FIBERGLASS ARROW SHAFTS W16~ 622 1g61*1000 24-Hour ServIce. Add $250 postage Send Bank Check Money Order t JIM MESSERS QUALITY MODEL PRODUCTS 106 Valley View Dr. Allegany NY 14706 $100 NE 6194424636 eta 4695075 LA MESA CA 92041 FGK SERIES FP-5FGK 1U3 NEW NEW YEARS ready-HA j POSTAGE AND HANDLING CHARGES 1U I$000 $2500 add $300I I$2501 0 add $400I Over $5000 add $500I El California retidents add 6% state sales tax I

NOISE IS DOWNER flying sites lost put together could outstretch Great Chi nese Wall dismay over unreasonable neighbors acute ever Weve study after study persist thinking weve done part Horsefeathers have never really faced up prob lem may have some relatively good mufflers pure luck happen pur chase engine reasonably quiet wonders about because pipes noisy proves engine can run quietly think noisy old lady lives 4Yz miles away lost site true bomber-raid cacaphony lawn mowers fact decibel readings show local traffic louder models distance Thats irrelevant engines have distinc tive tonesand citizens large dont share love heavenly sound mufflers first decreed modelers sought mufflers decreased power least legal frequently cri terion still muffler widely used eloquentiy proves philosophy still us does point sound propelled vast distances sharp bark bedeviled manufacturer caught between rock hard place because cus tomers oppose efforts quiet down too much power loss know loss flying sites something happens other guy never us Until. muffler engine manufacturers fail produce reasonably quiet engines have learned would buy engines would turn competitive brand shall first modelers fault manu facturers problem curable dont hold breath probably realistic starting point officialdom pro gram effort comparable devotion pursue things like new RC fre quencies Are safe site secure People dont know safe sites gone Will next consumer industry might try getting heads straight am involved folks distant flying place save site first flew housing area com plaints came pointed out No overflies indeed distant barely sees houses Worse noise complalnts also questioned safety site remain active may fliers will have police model decibel meter given distance run safety checks like state auto inspection plane must bear sticker related items have checked off Nat urally such situation some members react persecution lets nuke-em attitude including chicken feliow mem bers would rather fly dead Touch-andgoes Its early Wednesday morning late November stare out window Hermes rattles alongnoting straight-up plume wood smoke neighbors chimney motionless trees leaden gray sky weatherman says will warm up later Vagabond RC Assist primed go am thinking King Arthur Knights Round Table galloped off noble missions Raiders Lost Ark Since began editor Bill Barnes 1936 until very moment mail has dominated people looking plans accur ate mind strange all-but-forgot ten airplanes sources information clues things pub lished An unending stream people write sight magazines column ists folks get mentioned print Find ing what want life-and-death matter desperate researchers mention some guys needbecause cant help another wave letters follows guys over world have plans back issues know something saw print feels like marriage broker since nature abhors vacuum won der some model air museum library reference service has established Rubber Scalers really have grapevine know about real plane ever existed swap plans pictures old articles clippings sit librariesyoud sur prised sits dreams National Air & Space Museums library ferret out color chips pieces genuine fabric preeminent historians find old kits have plans collectively just about 16 Model Aviation just fun Bill Winter George Meyer Shortly after columns coverage George Meyers Lii Toot array magnificent home-built model en gines George passed away George bril liant career aviation lodestone wisdom attracted people world wide George mechanical genius merely extraordinary machinist can see famous Lii Toot Experimental Aircraft Assn Museum family estab lishing trophy-award EAA Winter sug gests clubs would well generate events genuine community service contributing Cancer Fund stuff dreams made Merely typical master Rubber Scaler Bill Noonan 1-in-scale de Havilland Hawk Moth rewards look closelyscale drag wires wing dummy tanks though hidden covered spoked wheels mud spray shield de tailed exhaust cowling sliced ribs lightness cant see him pic pilot wears peaked cap has startling life-like expression Noonan fine artist too Ultimate RC-Assist content sitting duffs between FF meets Hunters Bill Bob installed three-channel Micro mini RC ABC Rossi 65 Satellite operate small rudder elevator actuate K&B snap-off chop engine Bill launches RC-Assist 80-degree climb dad Bob tries keep knees knocking Climb slightly left-wing-lowbut turn angle crate bores up rock-steady Bob chops power pushes over glide trims elevator lift-finding circles ship distant speck brings back anotherand anotherflight way have cake eat too / Above Left Bill Hunter left Bob Huntereach high-soaring eagle Bills pure FF VIT AR Bobs RC-Assist Above Right Large air-flow exit rear widened venturi-type pylon wing mount Bills FF both similar respect Below Left Another view venturi pylon latest Satellitesand powerful Rossi 65 Fingers go 1/64 ply tube provide hold hand-launching Below Right Small rudder elevator provide flight control needed Bobs fast RC-Assist Satellite models clothes Bob Benjamin would 10 best-dressed men Since devotes much flying time showing kidsand curious adults toohow different kinds aircraft fly show some offbeat craft operate out schoolyards Above Left Veco Brave CL restored friends pile junk So old unknown whether Veco kit later Dumas release Its Stunter early 1950s Appropriately engine Forster G29bought Ray Chalker local MECA coordinator MECA engine collectors outfit Right Powered spark-ignition O&R 60 Bobs first Old-Timer really gets attention kids schoolyard flying Above Benjamins 54-in Comet Taylorcratt reinforced covered colored silk clear butyrate Three servos Enya 09 After 40 flights being converted scale dihedral tail surfaces 4-channel scale paint scheme Comet 50-in series great Left Original Y2A CL along lines famous Magician demonstrates kids what can done 049 plastic RTF does inside outside maneuvers light breeze AIR OUT THRU BATTERY AS EXAMPLE ONLY WRAP WITH IRON-ON CLOTH ___ RLK METAL OR PLASTIC MOTORTOP VIEW MOUNT STRAPS USE 4-40 X3/I6 IN MOTOR JF1 #2 SHEET METAL INIIt=4LiL PLYWOOD FORMERAM~UJ JLf ML 12 SIDE VIEW KRC RECOMMENDED MOTOR MOUNT 12 CUT SNUG-FITTING HOLES IN I/B PLYNOTE REAR FORMER MAY BE POSI FORMERS TO SUPPORT MOTOR OFFSETTIONED AT OR AT 2 IN FRONT OR MOTOR HOLE IN REAR FORMER FORIN BACK OF MOTOR COOLING HOLE DESIRED SIDE AND/OR DOWN THRUSTRE SURE THERE IS I/2DIA AIR SHOWN EXAGGERATED HEREEXIE HOLE MIN IN FUSE BOTTOM TYPICAL ELECTRIC MOTOR-BATTERY WIRING DIAGRAM FOR MOTORS TO15 SIZE 8 BATTERY PACKS OF UP TO 12-12 AMP HR CELLS RAPID INTERFERENCE CAPACITOR PARTS LIST-PARTS LIST ICwetI WIREIAor lB GA stranded copperMICRO SWITCHI5 AMP-250 VAC-Unjnoo 3 TMT 15-4 RADIO INTERFERENCE CAPACITOR- 01 MPG lnicroeqoinolent IRADIO SHACK 275-OIBI forodl redoce high frequency radio isterfereeceCHARGE SOCKET Switcltoraft #712A egoloolent Note low frequency interference occoro odd toCHARGE PLUG SwtcBcroft *160 eqoioolent notor o 47 MPG eloctrolylic sore obseronARMING SWITCH- Sohniniatore single pole single polorily portthrow ISPSTI 10 AMP125 VAC ROOIO SHACK #275524 MOTOR BRAKE RESISTOR25 124 27ok1 non wottor eqojooleet FUSE ATC 20 AMP adopt B flog connectorsCONN. MOTOR B BATTERY Moles 2 pin sloe per CONN. MICRO SWITCH B FUSE IBT flog type Waldotorecommended motor nonoyactorer Copied firsl SEAM newsletter ISOCIETY OF ELECTRIC AIRCRAFT MODELERS Scale model ever kitted before born Aeronca K comes mind Since early post-WW II days series 50-in Scale flying models Comet has remained popular Comet its early days designer tal ent subsequent producers lumped gether Monogram Top Flite Carl Gold berg models generated ex-Comet people Comet great creators worked like Joe Konefes Bombshell fame Started three guys during late 1920s legend has total starting capital about $200 principals laundry manby WW II 500 em ployees biggest model plane manufact urer world has seen Among 50-in fliers T-Craft alone has great Rubber FF Gas Radio Control has flown indoors RC mentioned Hurst Bowers modi fied Aeronca K Came letter artist Bob Benjamin gifted modeler full-scale plot wanted build Quarter Scaler Sources given pre cise enough other readers told us Bob Lopshire definitive Quarter Scale plan turned out given wellknown Scale flier Bob Karlsson real K check out plans general distribution told you ran Bob Karlsson might try bended-knee approach So Karlsson sent plansI just opened Three readers sent help Benjamin Hobby Helpers plans actual tearsheets early American Modeler Which bit tearing because often flown talented late Ed Yulke designed knew crate quite well beautifullyengineered airplane Ed engineer Luscombe later Republic cas caded escapements No cant send plans alas prompted letter Dick Glea son Gleason Enterprises 1704 29th Ave SE Rt 2 Box 125 Austin MN 55912 Dick operates plans-finder service offers information cost 560 different makes 1600 models line draw ings have published over past 50 years plan form During 1935 writer published rubber-powered Waco D So prove Dicks point plan redrawn sheet number plates MAN Dick claims corrects errors clarifies construction did excellent job believe Enclosed 3-view mysterious Stin son PT tandem low wingI drawn published somewhere What scale asked dont remember doing drawing real plane existed Dick has doing five yearsand never heard him Three years ago 50 old kit plans plus 42 RC projectsinked Mylarwere des troyed fire like Phoenix rose ashes Bob Benjamin incidentally Cessna 140 owner chided us confusion about flying 120 days yore Seems confused 140 flaps subconsciously assuming 170 140 have several occasions after careful checkout flown 140 Bob tells us being abandoned grass field air port now RC site give guys dont often get near big ones chance check out emphasizelots Continued page 20 18 Model Aviation KRC RECOMMENDED BATTERY INSTALLATION 1/16 PLY OR 1/16 HARD BALSA 0 Top Quality Name Can Depend 4-40 STEEL KWIK-LINKS 9 4 4-40 links con structed top quality spring steel control linkage hook-ups Cat No 3042 $100 / / Cat No 306$75 ea NICKEL PLATED SOLDER LINKS new nickel soldering Cat No 305 4-40 solder links plated easy 2 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY 1/4 scale HINGES Easy install precisionStrong smooth andBuilt heavy load DUBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free locked --the small the1/4 scale applications checked for-heavy duty hinges smoothness theCsixThey use removable eLIjj3/64 dia cotter pin tory-holes eacho side max imum holding o 0 0 60 000 Cat No 118 6 per pkg $100 Cat No 116 6 per pkg Cat No 257 Cat No 119 l5perpkg $195Cat No 117 l5perpkg l5perpkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED DURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 -1/4243 7/32 141 3/16 139-1/4 136 3/32 1371/16 455/32 k Heavy duty $1 00 2 per set -J--------------------------- $80 per set sets 4 J HEAVY DUTY 4-40 BALL LINK IIflT/nl Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse age minutes dr ing 3/16 hole Cat No 203$1 /*fsl MO DUeBRO SNAP-ON BALL LINKS V Bolt S85 Threaded $85 Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight Excellent offset steering servo throttle hook-ups Cat No 180 Cat No 181 Cat No 182 DUeBRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 DU-BRO 4-40 KWIK-LINKS 12 rod included Fun/Winter Continued page 18 care taken operating big little close proximity Last time happened fel low stuck transmitter hand standing airplane started tak ing pictures Lets hope some mag doesnt run gag picture anti-super-monster people will blow stacks Bob has cathoilc interests own modeling show pix portion mixed fleet really fly big Buzzard RC-Assist out little schoolyard Bob goes lots attention neighborhood kids have comments model press about getting types models areas kids non-modelers can see idea right markfor modelers know what doing Seeing newcomer wipe out RC trainer against side school what want show general public make practice flying something like OldTimer Control Line job small Scaletype RC schoolyard least once week weather permitting making practice take much time necessary talk kids Occasionally homeown ers walks over chat three years have never negative comment will send some stuff couple sport Free Flights hopefully Pea nut rubber job wife building loves full-scale 140 dislikes model engines has get near thinks Trexler wheels super beginning some nice work small Rubber Scale building projects hear Bob doing some model mag cover paintings too Just saw Model Builder man seasons Which prop recent interest comments others concerning engine stroke torque prop size etc says Richard Aley Honolulu what ics worth would like add comments engine has its own unique set horsepower torque vs rpm curves Gen erally rpm peak horsepower same peak torque So what say have use prop will allow engine run its peak horsepower rpm live happily ever after Right Yes youre running engine bench What seems have overlooked Dick continues much horse power torque engine capable pro ducing much converted thrust given airplane propeller combina tion other words propeller efficiency airplane given flight condi tion will propeller will give maximum efficiency converting horse power thrust order make har monious relationship engine used must able turn efficient propeller engines peak horsepower rpm have Schnuerle-ported 60 must turn around 15000 rpm develop close peak horsepower mount con temporary Pattern airplane use 11-7 11-8 prop engine will develop close its peak horsepower air prop will fairly efficient converting horsepower thrust airplane will perform very well aithough will fly quite fast Continued page 84 20 Model Aviation NEW Discriminate Scale Fliers Demand Dave Platt m perfectionist.my kits prove reputation finest models RC scale has founded upon careful attention detail period over twenty years fact Im particular about kits theyre available personally make kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly THE ULTIMATE legendary beauty efficiency Spitfire 1/5 scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 gIn engine Maximizer ultimate Spitfire provide intense experience sophisticated R/C $ 47 -delerSpan 88 Length 78Weight 1520 lbs e%er%cjmnitt melO9% Grand bold flies great staying easily transportable 11/5 scale 7 span over 1000 sq ins gg engines Bucker Jungmeister regular direct drive engines 60 gg 65 span 11/4 scalel ace aerobatic biplane time Still fits car $139 $179 New 1/4 Scale Pilot &$139 Supplied unpaint- o ed comes in- Available struction booklet 1/5 116 scale WorldRetracting $3 War II Fighter Pilots full Conspietesysterri $t39 figure515heavie ships 110W TO ORDERDireci rnannfacturer mo markapi Write caliwe accepi check money order Master Charge Visa cards pay UPS anysshere ike USA fFforida residenis add 40 safes raxl Yes accept foreign orders yos pay freighi information ash modef send seff addressed envefope nave Dlatt iviodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 rporated 615 So Gallatin Rd son TN 371 615 868-6811 Mon thru Sat am 500 pm R/C SALES AND SERVICE SPECIALPURPOSE* BATTERIES & CHARGERS SALES RADIO SYSTEMS FUTABA ROYAL ACCESSORIES FOR MOST RADIOS J Safety/Preston Continued page 14 model buddys model buddy kind enough hold pride joy start tt ask would foolish use stuff favorite airplane Well new fuel shossing up costs about $132 gallon can hought filling station guessed its gasoline fuel used almost i i-scale models Quad ras etc conclude months safety column relate incident constant threat RC modeler no matter proficient well takes care equipment came us via Go/il Coast Flier edited Art Charlotte Johnson Delrav Beach FL happened Florida Air Show Team about perform Florida Atlantic University An incident ten minutes before show time gives pause thought sound model engine starting parking lot couple hun dred yards takeoff site unexpected check Airtronics frequency monitor revealed transmitter 756411 mHz turned out couple young fellows readybuilt bad given no thought conse quences operating radio could hope see Shots Team models ready takeoff ease irresponsible ignorance cooperative ssbcn explained problem invited watch show come Out regrilar club field later wanted help putting models away after show again heard engine startup short time later very loud thud model destroyed itself Sure bard get across some people RC models just toys incident sound engine alerted Show Team members pres ence other modelers However intruders out earshot team would still have learned presence radio signal Aictronics frequency monitor other teams have wisdom purchase frequency monitor An ounce prevention ts worth pound cure John Preston 70/2 EIrira Ci. Falls Church VA 22042 Fun/Winter Continued page 20 take same engine propelter put -scale J-3 airplane will fly slower will cause engine lug down somewhat less peak horse power rpm prop will inefficient will produce less thrust given horsepower output could install dif ferent prop give efficient prop/air plane match probably 18 20-in diam eter would lug engine down would produce less horsepower answer problem either chain saw engine turn larger prop directly belt drive Author gear drive will turn larger prop yet allow engine run its peak horsepower rpm What means Dick concludes engine/airplane/propeller combination compromise larger slower sport-type Continued page 116 84 Model Aviation REPAIR SERVICE FOR HOBBY LOBBY EK LOG ICTROL F UTA BA HOBBY SHACK ROYAL PRO LINE TOLEDOI83 TWENTY-NINTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featuring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days APRIL10 lo presented Weak Signals RIC Club PO Box5772 Toledo Ohio 43613 FRIDAYgamto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm Fun/Winter Continued page 84 models may necessary use larger en gine turning larger prop below peak horsepower rpm order get adequate per formance out model significant point airplane/propeller/engine combination must selected give performance desire Because variables involved usually accom OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING INTRODUCING THE NISTARTERTM Pat Pending new cornpferly rvofrrtronary concept power gf ow pfugs modef cars foats airpfanes helicopters anything using tfre 15 ut Standard pfug glow engines Rechargable lOft tOOO tirrresl Fits pocket Works srdeways rr inverted Fits through cowfings Uses Head Lock TM plug adapter Stays pfug rrot irr propeffer lncf charger & instructiorts 90 day guarantee After rfrar anything faifs normal usagef wif repair replace $6 up hf full year! SEE DEALER OR CALL US BANK CARDS OK COD OK PAY SHfP PING SERVICE $2195 See Deafer 13506 Gfundundee Dr Herndon VA 22071 703f 435-5805 pUshed trial error Prop/plane combinations truly infinite Running engine ground best relative indication Dick doesnt mention prop unloading hut implicit said know prop turns up air sometimes hy 1000 rpm Only plane moves forward ap propriate airspeed does prop blade like wing section meet air proper angle attack 116 Model Aviation GONTULIKI TANKS PROFILEtCOM8A7RAT WIDE ft NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Gustrn Dliii lush Ingredients detailed brochure 50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road charleston Hgts. sc 29405 803-553-7169 GRANDE SCALE 21% ct lMZi- Retracting Landing Gear sa o Flaps FIberglass Cowl Tail Cone Flyingwires. 04 m S SEND TO LEE RICHTER I4O26 W MapleRidge Rood New Berlin WiecONLY SET S Sereow leaded OstartSSET 100 aq ft ineirrdrng Ptrset arrest Shipirert UPS Jolly Ray Marlstrom Britains Bill Hannan cant tell aint lookin Rays Altaira l3Yz-in.span rubber job has lifting-body 19%-in fuselage Weighs 125 oz plane dirty too big too heavy its prop power prop may par tially unload never unload labors like hod carrier just flails air Small en gines must scream props tend small diameters low pitch typical sport models 5 6-in pitches common 6-in generally considered dividing line between low high pitches Try counting 10-6 props see engines approxi mately 40 co displacement know high pitches get high gear like overdrive ship clean fast crate dived descending leg maneuver Low pitch low gear climbing hills accelerating quicklybut like roaring along Autobahn second gear High pitches keep socalled trainer coming fast under power lower pitch brakes approach DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP DEALER DISTRIBUTOR INQUIRIES INVITED 54, FNUINES THE BEGINNERS KITTEN AND EXPERTS TIGER 3Revolutionary snap wing eliminates bolts rubber bands GEMINI MODELS INC Complete kit $5495 dealer direct P0 Bo t t 68 Pnsac NJ 07055 Engine rpm prop diameter play veri table duet terms prop wash strikes against port side fuselage fin etc side profile calls shots high cabin low thrust line may lean right under power like pylon FF note effect slightly battered Kadet being expert find ship gets run ning right takeoff much heavier rudder applications needed especially crosswind left ailerons plus rudder required get zig-zagging runs left easily corrected crosswinds dont matter much nose wheel pro duces wide left turn taxiing takeoff true after occasional brief early touch two right rudder big Sniffer RC-Assist very high cabin leans right regardless torque Vagabond RC Assist turns left torque regardless prop wash Pylon Free Flights normally cant turn left safely under power some RC ships designed go pointed like lowwing Pattern jobs prop wash problem pilots argue never need offset engine thrust typical trainers usually demand right thrust sometimes offset thrust reversal big Sniffer turned right under power removed its right thrust ship became vicious rightit worse Apparently angle prop wash agalnst port side cabin encountered profile smaller angle right thrust present Continued page 120 PRODUCTS von ruc ntrcohh&ufl flflrI PA March 1983 117 speed making things less hectic coming over fence Flying Near Airports Careful Free Flight Radio Control flying near airports situation might involve Ihe possibility models being vicinity ot full-scale aircraft operations must avoidedor conducted eliminate dangerous situations Models should flown proximity full-scale aircraft operations unless flyer has someone else him sole purpose watching full-scale aircraft supervising flying prevent accident possibilities PROTECT YOUR RIGHT TO FLY Safe Flying No Accident Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers * Venturi Mufflers * Expansion Mufflers Helicopter Ball Mufflers Specialized Exhaust Systems Unsurpassed Wnrkmehin ormance Fun/Winter Continued page 116 Once tested fun effects props pylon IT Firecracker MAN circa 1950 Results contrary books tiny one-bladed prop K&B Infant 02 first 02 OK Cub 049 leaned pyloned Firecracker tight left sweeping turn Progressively increasing diame ters and/or pitch opened left power turn end line crate lean ing bard right Luckily missed prop would have looped ship ground full-octave torque prop wash effects Prop wash increases rapidly diameter friend delightful cabin-type rubberFine Quality Flying Models 4 Catalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 powered sport model preferred left/right patterns FF Gas produce S-transition minimized drift wind added rubber torque would tighten left increase climb argued would go right insteadand prop wash would effective torque did Prop wash mighty force given some surface work Such crude test methods used Citizen RC published MAN late 1940s know what improvement glow Arden 09 glow just coming would show over ignition tied crate long rubber strand aliowed accel erate stretching band perhaps 25 feet before crate snubbed stop wee bit unloading difference stretch tangible taching rpm rest Recommended prop sizes find engine best engine reach its max rpm peak power Richard Aley said hut put proper size crate displacement may make much noise go nowhere An inch diameter 7-4 8-4 15 may prove best plane comes alive Power thrust right engine/plane combination through engine may developing its ideal performance planes will fly better engines developing torque prop luggers buy en gines scream crate pleases thats counts works dont fix it doesnt cut mustard know lead sled properly balanced grossly mismatched its engine fine-tune props try extremely modest changes pitch and/or diameter Overpropping tricky thing infinitely likely ruin engine sustained use season high humidity and/or temperature nitro content fuel hot cold glow plugs other jazz have effects example once heavy 6-ft Live Wire Veco 29 summer required mighty heave 11-4 prop Alas since low pitch downthrust will make crate sometimes nose down before wing generates lift increasing speed ia square lift formula ship grazed ground rigid flight path before heading skyward winter 12-5 prop same ship would float off hand taking step climb steeply rocking gently like some huge rubber-powered ROG surprised see Bob Thompsons 120 Model Aviation Its FCS-4 Radio Designed Canadian governments target drone program approved US Armed Forces Training Command Full Command Systems has now brought cut ting edge Radio Control technology hobbiest N FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easeier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack 600mAH & 1200mAH extra Expandable F Full Command Systems 908 E Rosewood Spokane WA 99207 509 487-2122 Get install dont take off -- Ken Willard RCM SERVO GARD SERVO GARO monitors airborne flight battery pack voltage well radio signal received transmitter receiver malfunction detected part che system SERVO GARD reduces throttle automatically ample time before battery failure I safely land nodel SPECIFICATIONS size unit installed KPS-1 4 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Puise Unit shipped positive pulse systems negative pulse available upon request SERVO GARD comes complete pro-wired pigtails servo connectors choice installed Ispecify connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordoringl ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 6311 SW 2nd Street Margate FL 33063 ENGINEERING13051 910-0611 THE LANDING GEAR PEOPLE TIred kit landing gears dont lit year higgis prfpftly o & 0 Engineering can sflfC ynsr prohiemnl * Custuln built tour needs & specs gsaranteed fit * Streng & durable withstand toughest landing * 0 & 0 Engineering gear will wurk & keep higgie hying * In slack replacement gear tsr mast pspslsr models Byrnn Pills Christen Eagle CAP 21 Balsa USA J3 CUB Air Tech Pawnee Eagle Nasen Big Stick Chump Citabna B & mudels Snapper Stinger Snapper Tao photo page 18 December 1982 MA says Mark Fineman Fun won dered what Bob doing several rubber loops attached various fingers like some string puzzle taken 1980 FAC Nats Wright Field Dayton plane Keystone Bomber taken Cleveland plans Keystone Pirate Bomber original plan engine nacelles profiles Bob made three-dimensional Bob appears back-winding Mark goes unfamiliar prac flee pull out two loops rubber holding wind other backwards few turns loops placed prop hook automatically wind up something like braided motor automatically taking up slack might otherwise cause CG problems glide classy rubber stooge conven tional auto photo both Bob shared both stooge car Plans stooge appeared FAC News about year ago Bob tipped off well-kept secret mentioned years Maxecuter Meet will include Bill Winter event Last year Earl StahL Mark expressed diffi culty choosing between plans Mr Mulligan advised top longerons square corners rounded off assumed years ago before accurate drawings released Grumman F3F short-nosed pot-bellied Grumman does permit much rubber weve advised Mark wanted bipe era gay Navy markings might better swept-winged both wings Curtiss SOC-l lightened up modern techniques Any way should weird experience watching what good fliers FF Rubber Scale jobsour bread-and-butter mag projects days no could lift $15 worth groceries Eureka am really building two electrics Im beginnerif want answers follow Poling MB three great features issue saw last night As beginner Ill pass own experiences First Astro Flight has new hot armature two reduction-belt iSs have 13-8 prop 5500 rpm Don SrulIs magnificent Spitfire expect 1000 rpm boost possibly duration Well test fly Spit anon second updated system goes 6-ft Old Square Sides Antique Last night joined John Worth flew Buzzard Bombshell pack 16 sub-C cells old Astro 15 belt drive 14-6 prop OS 90 less full charge flew cold dusk 12 minutes Bill Poythress timed made altitude evaluation crude triangulation calculated got up least 800-plus feet maybe much 1100 feet power shut off glide about sport engine-powered RCjob bit noticeable sink flight 15 min quite possible aid warm air lift New Astro motors coming up will sur pass hot-winds just now appearing Skybo am using geared 05 Leisure electric motor swings 11-8 six sub-C cells look thermalling flights Leisure can give beyond 50% increase motor run 30% increase rpm geared 05 six perhaps March 1983 121 2 ff415 QUARTER MIDGEL Tiff NELSON 15 1st th & 1OVh complete brochure great engine & other quality competition products send 50 cents KUS TOM KRAFTSMANSHIP Box 2699 Laguna HWs CA 92653 Call 714 830-5162 Dealer inquiries invited riiroiuii DRLRIILt El MLL UIfltII IUN Heres equipment yoo need give yoor prop , balance--balance directions Carefully crafted top grade materials BUBBLE BALANCER accomodates 3/101/49/32 prop holes Other sizes available special order Dealers invited $1695 Add $t5B HOWARD B HUEBL DEPT ROS postage handling Mino add 4%sales taa No ttlBs Bo 02 Rt 0 Mankoto MN 00001 rOROER TOLL FREE 800-854-8411 IN CALIFORNIA 800-472-8456 IN LOS ANGELES 714963-9881 UnY p mall 18480 EANDILIER CIRCLE FOUNTAIN VALLEY CA 92708 Super Discounts Now PRICES GOOD THRU FEB 1983 POWER-START STARTER Powerful 12 VDC electric starter 049 ng ines planes cars & boats NO 1153862499 LIST $4995 FUTABA FP-4L 4 channel sysyam w th 3 servos full Nm-Cd operat servo reversing switches trays hardware frequency flag nasruct book $1999511999 &IL5 P-51 Mustang NO 526327 P-51Mustang Fun ScaleLIST $4495 R/C wood kit Span 51 Area 490 sqin. Engine 19 40 Radio 4 ch name address city I I statezipI mail order catalogs 18480 BANDILIEE CIRCLE I I FOUNTAIN VALLEY CA 928708 • UPEANUT SCALE UODEU I/ ZERO PIETENPOL PIPER CUB ANDRESON MUSTANGLACEY M-10 jPowred PRAIRIE BIRD 4 KIT $595 Kit $596 MILES M-18 ORUINE COUGAR GIPSY MOTH GANAGOBIE SPORT MODElS BABY ACE$649 ONE NITE 28$696 ONE NITE 16$596 STRINGLESS$496 PECK ROG$196 RADIO BLIMPS CONTROLLED II nd 13 FOOT LONGKITS OR READY TO FLY Now IN THREE COLORS GRAY ORANGE YELLOW Low PRICES seven sub-C cells new generation mo tors being developed both manufac turers Theres lots month Id like show some tips Bob Kopski appeared info sheet gave out Annual Electric Fly Hatfield PA wiring diagram SEAM Newsletter remarkable publication join SEAM want keep up $1000 Society Electric Aircraft Modelers 11632 Flamingo Dr Garden Grove CA 92644 Youll shocked Bill Winter 4426 Altura Ct Fairfax VA 22030 Zephyr 1100/Owens Continued page 30 nose fairing add F20 / 16 ply tongue slip-fit between fuselage sides Remove F 17 install wing now carve F17 match wing upper surface Install F17 hatch using 4-40 screw Finish carving F16 F17 obtain rounded smooth contour blends fuselage Install reinforcement blocks tow hook sport flying prefer simple bent screw hook can made cup hangers prefer compete use capture/releaseable hook shown August 1982 Model Aviation uses Fourmost hook easy-adjust method Install fuselage F12 filler F6 top sheeting Trial-fit tail permit alignment tail skid dorsal fin Carve sand fuselage corners rounded section shownjust enough expose FD- triangular stock Leave wing tail saddles flat extra strength competition fiber glass entire fuselage Starting tail apply layer l-oz cloth up F6 layer 4-oz cloth F6 F3 two layers 4-os cloth F4 nose block Use toilet paper soak up excess resin before cures minimize weight gain Sand resin/glass coating #120 grit wet-or-dry paper resin tends clog paper add little dishwashing detergent water wetsand Apply thin final coat resin plan paint fuselage recommend Sand final coating #180 wet-or-dry Spray-paint favorite color material Install servo solder threaded end-fittings control wire Trial-fit tail surfaces control horns cutting wires length Covering encouraged use little imagination selecting color scheme Use several colors have large areas contrasting dark light tones underside prefer have fuselage inner wing panels vertical tail light shade wing tips horizontal tail dark get big boomer three dark areas spaced wide apart sepa rated light tones will help maintain visual contact MonoKote preferred covering material However new Coverite Micafilm will save couple ounces considerably tougher Micafilm seal down edges CA glue before shrinking not-so-hot iron tempera ture Omit covering time lower extension fin spar also stab center line attaches fuselage Separately cover rudder ele vator spoilers attach yet After shrinking covering go over ribs other framework seal down truly necessary wing undercamber Tail assembly Temporarily bolt wing fuselage serve reference cor rect alignment horizontal vertical stabilizers Place horiontal stab posi tion aft fuselage view rear fair distance aligned sand high side fuselage Apply 5-mm epoxy stab saddle clamp place viewing angles adjusting necessary perfect alignment including fin slot should straight ahead Connect elevator control clevis elevator horn Apply heavy coat Vaso line mid-portion elevator joiner wire apply 5-mm epoxy stab around slot joinerin area Vasoline cured epoxy serves zero-slop bushing 122 Model Aviation IN STOCK POR iavumuisei c mir-iviEii New 22 CID QUADRA$10495 Rag 22 QUADRA *6496 wIlt Brtslgheila Flywheel *11496 Reg 22 QUADRA POWER ASSEMBLY ONLY*5496 QUADRA REPAIR*1000 pins parts PEsW RADIAL ENGINES Fleet*2296 JIm Messer ERCOUPSPLANS $2296 KIT *22996 Jim Memr TOMAHAWKPLANS $2296 KIT *24996 BALSA BASSWOOD 111 slasal36% OFF Concept FLEETKIT $17996 FG COWL $1996 QUADRA Snal tanksiSo *69622oz *796 vICKERS LEWIS MACHINE GUN KITS$1496 ALL CECONITE PRODUCTS10% OFF PLANS SUPER STEARMAN IGodfrsyl*3600 STARDUSTER TOO IBrIsIghelial*2996 scala J3 CUB mallS FLEET IConcept*2996 VOLKSPLANE IChlckan Charilel*2296 FLY BABY $1596 SE-B IRanechl *2496 COCKPIT KITS Tomahawk F4U-1 SpItfire $2196 Ercoupa *1996 Stearmnan *2096 Citabns *2496 J3 Cab *1995 ME109 $2150 Flees *2096 FIBERGLASS ARROW SHAFTS W16~ 622 1g61*1000 24-Hour ServIce. Add $250 postage Send Bank Check Money Order t JIM MESSERS QUALITY MODEL PRODUCTS 106 Valley View Dr. Allegany NY 14706 $100 NE 6194424636 eta 4695075 LA MESA CA 92041 FGK SERIES FP-5FGK 1U3 NEW NEW YEARS ready-HA j POSTAGE AND HANDLING CHARGES 1U I$000 $2500 add $300I I$2501 0 add $400I Over $5000 add $500I El California retidents add 6% state sales tax I

NOISE IS DOWNER flying sites lost put together could outstretch Great Chi nese Wall dismay over unreasonable neighbors acute ever Weve study after study persist thinking weve done part Horsefeathers have never really faced up prob lem may have some relatively good mufflers pure luck happen pur chase engine reasonably quiet wonders about because pipes noisy proves engine can run quietly think noisy old lady lives 4Yz miles away lost site true bomber-raid cacaphony lawn mowers fact decibel readings show local traffic louder models distance Thats irrelevant engines have distinc tive tonesand citizens large dont share love heavenly sound mufflers first decreed modelers sought mufflers decreased power least legal frequently cri terion still muffler widely used eloquentiy proves philosophy still us does point sound propelled vast distances sharp bark bedeviled manufacturer caught between rock hard place because cus tomers oppose efforts quiet down too much power loss know loss flying sites something happens other guy never us Until. muffler engine manufacturers fail produce reasonably quiet engines have learned would buy engines would turn competitive brand shall first modelers fault manu facturers problem curable dont hold breath probably realistic starting point officialdom pro gram effort comparable devotion pursue things like new RC fre quencies Are safe site secure People dont know safe sites gone Will next consumer industry might try getting heads straight am involved folks distant flying place save site first flew housing area com plaints came pointed out No overflies indeed distant barely sees houses Worse noise complalnts also questioned safety site remain active may fliers will have police model decibel meter given distance run safety checks like state auto inspection plane must bear sticker related items have checked off Nat urally such situation some members react persecution lets nuke-em attitude including chicken feliow mem bers would rather fly dead Touch-andgoes Its early Wednesday morning late November stare out window Hermes rattles alongnoting straight-up plume wood smoke neighbors chimney motionless trees leaden gray sky weatherman says will warm up later Vagabond RC Assist primed go am thinking King Arthur Knights Round Table galloped off noble missions Raiders Lost Ark Since began editor Bill Barnes 1936 until very moment mail has dominated people looking plans accur ate mind strange all-but-forgot ten airplanes sources information clues things pub lished An unending stream people write sight magazines column ists folks get mentioned print Find ing what want life-and-death matter desperate researchers mention some guys needbecause cant help another wave letters follows guys over world have plans back issues know something saw print feels like marriage broker since nature abhors vacuum won der some model air museum library reference service has established Rubber Scalers really have grapevine know about real plane ever existed swap plans pictures old articles clippings sit librariesyoud sur prised sits dreams National Air & Space Museums library ferret out color chips pieces genuine fabric preeminent historians find old kits have plans collectively just about 16 Model Aviation just fun Bill Winter George Meyer Shortly after columns coverage George Meyers Lii Toot array magnificent home-built model en gines George passed away George bril liant career aviation lodestone wisdom attracted people world wide George mechanical genius merely extraordinary machinist can see famous Lii Toot Experimental Aircraft Assn Museum family estab lishing trophy-award EAA Winter sug gests clubs would well generate events genuine community service contributing Cancer Fund stuff dreams made Merely typical master Rubber Scaler Bill Noonan 1-in-scale de Havilland Hawk Moth rewards look closelyscale drag wires wing dummy tanks though hidden covered spoked wheels mud spray shield de tailed exhaust cowling sliced ribs lightness cant see him pic pilot wears peaked cap has startling life-like expression Noonan fine artist too Ultimate RC-Assist content sitting duffs between FF meets Hunters Bill Bob installed three-channel Micro mini RC ABC Rossi 65 Satellite operate small rudder elevator actuate K&B snap-off chop engine Bill launches RC-Assist 80-degree climb dad Bob tries keep knees knocking Climb slightly left-wing-lowbut turn angle crate bores up rock-steady Bob chops power pushes over glide trims elevator lift-finding circles ship distant speck brings back anotherand anotherflight way have cake eat too / Above Left Bill Hunter left Bob Huntereach high-soaring eagle Bills pure FF VIT AR Bobs RC-Assist Above Right Large air-flow exit rear widened venturi-type pylon wing mount Bills FF both similar respect Below Left Another view venturi pylon latest Satellitesand powerful Rossi 65 Fingers go 1/64 ply tube provide hold hand-launching Below Right Small rudder elevator provide flight control needed Bobs fast RC-Assist Satellite models clothes Bob Benjamin would 10 best-dressed men Since devotes much flying time showing kidsand curious adults toohow different kinds aircraft fly show some offbeat craft operate out schoolyards Above Left Veco Brave CL restored friends pile junk So old unknown whether Veco kit later Dumas release Its Stunter early 1950s Appropriately engine Forster G29bought Ray Chalker local MECA coordinator MECA engine collectors outfit Right Powered spark-ignition O&R 60 Bobs first Old-Timer really gets attention kids schoolyard flying Above Benjamins 54-in Comet Taylorcratt reinforced covered colored silk clear butyrate Three servos Enya 09 After 40 flights being converted scale dihedral tail surfaces 4-channel scale paint scheme Comet 50-in series great Left Original Y2A CL along lines famous Magician demonstrates kids what can done 049 plastic RTF does inside outside maneuvers light breeze AIR OUT THRU BATTERY AS EXAMPLE ONLY WRAP WITH IRON-ON CLOTH ___ RLK METAL OR PLASTIC MOTORTOP VIEW MOUNT STRAPS USE 4-40 X3/I6 IN MOTOR JF1 #2 SHEET METAL INIIt=4LiL PLYWOOD FORMERAM~UJ JLf ML 12 SIDE VIEW KRC RECOMMENDED MOTOR MOUNT 12 CUT SNUG-FITTING HOLES IN I/B PLYNOTE REAR FORMER MAY BE POSI FORMERS TO SUPPORT MOTOR OFFSETTIONED AT OR AT 2 IN FRONT OR MOTOR HOLE IN REAR FORMER FORIN BACK OF MOTOR COOLING HOLE DESIRED SIDE AND/OR DOWN THRUSTRE SURE THERE IS I/2DIA AIR SHOWN EXAGGERATED HEREEXIE HOLE MIN IN FUSE BOTTOM TYPICAL ELECTRIC MOTOR-BATTERY WIRING DIAGRAM FOR MOTORS TO15 SIZE 8 BATTERY PACKS OF UP TO 12-12 AMP HR CELLS RAPID INTERFERENCE CAPACITOR PARTS LIST-PARTS LIST ICwetI WIREIAor lB GA stranded copperMICRO SWITCHI5 AMP-250 VAC-Unjnoo 3 TMT 15-4 RADIO INTERFERENCE CAPACITOR- 01 MPG lnicroeqoinolent IRADIO SHACK 275-OIBI forodl redoce high frequency radio isterfereeceCHARGE SOCKET Switcltoraft #712A egoloolent Note low frequency interference occoro odd toCHARGE PLUG SwtcBcroft *160 eqoioolent notor o 47 MPG eloctrolylic sore obseronARMING SWITCH- Sohniniatore single pole single polorily portthrow ISPSTI 10 AMP125 VAC ROOIO SHACK #275524 MOTOR BRAKE RESISTOR25 124 27ok1 non wottor eqojooleet FUSE ATC 20 AMP adopt B flog connectorsCONN. MOTOR B BATTERY Moles 2 pin sloe per CONN. MICRO SWITCH B FUSE IBT flog type Waldotorecommended motor nonoyactorer Copied firsl SEAM newsletter ISOCIETY OF ELECTRIC AIRCRAFT MODELERS Scale model ever kitted before born Aeronca K comes mind Since early post-WW II days series 50-in Scale flying models Comet has remained popular Comet its early days designer tal ent subsequent producers lumped gether Monogram Top Flite Carl Gold berg models generated ex-Comet people Comet great creators worked like Joe Konefes Bombshell fame Started three guys during late 1920s legend has total starting capital about $200 principals laundry manby WW II 500 em ployees biggest model plane manufact urer world has seen Among 50-in fliers T-Craft alone has great Rubber FF Gas Radio Control has flown indoors RC mentioned Hurst Bowers modi fied Aeronca K Came letter artist Bob Benjamin gifted modeler full-scale plot wanted build Quarter Scaler Sources given pre cise enough other readers told us Bob Lopshire definitive Quarter Scale plan turned out given wellknown Scale flier Bob Karlsson real K check out plans general distribution told you ran Bob Karlsson might try bended-knee approach So Karlsson sent plansI just opened Three readers sent help Benjamin Hobby Helpers plans actual tearsheets early American Modeler Which bit tearing because often flown talented late Ed Yulke designed knew crate quite well beautifullyengineered airplane Ed engineer Luscombe later Republic cas caded escapements No cant send plans alas prompted letter Dick Glea son Gleason Enterprises 1704 29th Ave SE Rt 2 Box 125 Austin MN 55912 Dick operates plans-finder service offers information cost 560 different makes 1600 models line draw ings have published over past 50 years plan form During 1935 writer published rubber-powered Waco D So prove Dicks point plan redrawn sheet number plates MAN Dick claims corrects errors clarifies construction did excellent job believe Enclosed 3-view mysterious Stin son PT tandem low wingI drawn published somewhere What scale asked dont remember doing drawing real plane existed Dick has doing five yearsand never heard him Three years ago 50 old kit plans plus 42 RC projectsinked Mylarwere des troyed fire like Phoenix rose ashes Bob Benjamin incidentally Cessna 140 owner chided us confusion about flying 120 days yore Seems confused 140 flaps subconsciously assuming 170 140 have several occasions after careful checkout flown 140 Bob tells us being abandoned grass field air port now RC site give guys dont often get near big ones chance check out emphasizelots Continued page 20 18 Model Aviation KRC RECOMMENDED BATTERY INSTALLATION 1/16 PLY OR 1/16 HARD BALSA 0 Top Quality Name Can Depend 4-40 STEEL KWIK-LINKS 9 4 4-40 links con structed top quality spring steel control linkage hook-ups Cat No 3042 $100 / / Cat No 306$75 ea NICKEL PLATED SOLDER LINKS new nickel soldering Cat No 305 4-40 solder links plated easy 2 $100 SMALL NYLON HINGESSTANDARD NYLON HINGESHEAVY DUTY 1/4 scale HINGES Easy install precisionStrong smooth andBuilt heavy load DUBRO molded rigid nylon hingesas easy install asheavy duty hinges ideal flash free locked --the small the1/4 scale applications checked for-heavy duty hinges smoothness theCsixThey use removable eLIjj3/64 dia cotter pin tory-holes eacho side max imum holding o 0 0 60 000 Cat No 118 6 per pkg $100 Cat No 116 6 per pkg Cat No 257 Cat No 119 l5perpkg $195Cat No 117 l5perpkg l5perpkg$375 DUeBROS COMPLETE SELECTION OF BRASS PLATED DURA-COLLARS Enough stock threads will strip can re-worked other uses Both heavy duty regular collar sets complete Allen Wrench Cat No 244 -1/4243 7/32 141 3/16 139-1/4 136 3/32 1371/16 455/32 k Heavy duty $1 00 2 per set -J--------------------------- $80 per set sets 4 J HEAVY DUTY 4-40 BALL LINK IIflT/nl Cat No 259 Shown actual size new hefty ball link perfect 1/4 scale application Set includes heavy duty nylon socket 5 piece set $125 complete switch KWIK-SWITCH MOUNT mounting set Install battery switch anywhere fuse age minutes dr ing 3/16 hole Cat No 203$1 /*fsl MO DUeBRO SNAP-ON BALL LINKS V Bolt S85 Threaded $85 Bolt-on links threaded links links rivit shafts take care misalignment Tough nylon link snaps holds tight Excellent offset steering servo throttle hook-ups Cat No 180 Cat No 181 Cat No 182 DUeBRO PRODUCTS INC 480 Banner Road Wauconda Illinois 60084 DU-BRO 4-40 KWIK-LINKS 12 rod included Fun/Winter Continued page 18 care taken operating big little close proximity Last time happened fel low stuck transmitter hand standing airplane started tak ing pictures Lets hope some mag doesnt run gag picture anti-super-monster people will blow stacks Bob has cathoilc interests own modeling show pix portion mixed fleet really fly big Buzzard RC-Assist out little schoolyard Bob goes lots attention neighborhood kids have comments model press about getting types models areas kids non-modelers can see idea right markfor modelers know what doing Seeing newcomer wipe out RC trainer against side school what want show general public make practice flying something like OldTimer Control Line job small Scaletype RC schoolyard least once week weather permitting making practice take much time necessary talk kids Occasionally homeown ers walks over chat three years have never negative comment will send some stuff couple sport Free Flights hopefully Pea nut rubber job wife building loves full-scale 140 dislikes model engines has get near thinks Trexler wheels super beginning some nice work small Rubber Scale building projects hear Bob doing some model mag cover paintings too Just saw Model Builder man seasons Which prop recent interest comments others concerning engine stroke torque prop size etc says Richard Aley Honolulu what ics worth would like add comments engine has its own unique set horsepower torque vs rpm curves Gen erally rpm peak horsepower same peak torque So what say have use prop will allow engine run its peak horsepower rpm live happily ever after Right Yes youre running engine bench What seems have overlooked Dick continues much horse power torque engine capable pro ducing much converted thrust given airplane propeller combina tion other words propeller efficiency airplane given flight condi tion will propeller will give maximum efficiency converting horse power thrust order make har monious relationship engine used must able turn efficient propeller engines peak horsepower rpm have Schnuerle-ported 60 must turn around 15000 rpm develop close peak horsepower mount con temporary Pattern airplane use 11-7 11-8 prop engine will develop close its peak horsepower air prop will fairly efficient converting horsepower thrust airplane will perform very well aithough will fly quite fast Continued page 84 20 Model Aviation NEW Discriminate Scale Fliers Demand Dave Platt m perfectionist.my kits prove reputation finest models RC scale has founded upon careful attention detail period over twenty years fact Im particular about kits theyre available personally make kit sign hold myself responsible reproductions genuine Dave Platt kit guarantee true outline combined force arrangement flies properly THE ULTIMATE legendary beauty efficiency Spitfire 1/5 scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 gIn engine Maximizer ultimate Spitfire provide intense experience sophisticated R/C $ 47 -delerSpan 88 Length 78Weight 1520 lbs e%er%cjmnitt melO9% Grand bold flies great staying easily transportable 11/5 scale 7 span over 1000 sq ins gg engines Bucker Jungmeister regular direct drive engines 60 gg 65 span 11/4 scalel ace aerobatic biplane time Still fits car $139 $179 New 1/4 Scale Pilot &$139 Supplied unpaint- o ed comes in- Available struction booklet 1/5 116 scale WorldRetracting $3 War II Fighter Pilots full Conspietesysterri $t39 figure515heavie ships 110W TO ORDERDireci rnannfacturer mo markapi Write caliwe accepi check money order Master Charge Visa cards pay UPS anysshere ike USA fFforida residenis add 40 safes raxl Yes accept foreign orders yos pay freighi information ash modef send seff addressed envefope nave Dlatt iviodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 rporated 615 So Gallatin Rd son TN 371 615 868-6811 Mon thru Sat am 500 pm R/C SALES AND SERVICE SPECIALPURPOSE* BATTERIES & CHARGERS SALES RADIO SYSTEMS FUTABA ROYAL ACCESSORIES FOR MOST RADIOS J Safety/Preston Continued page 14 model buddys model buddy kind enough hold pride joy start tt ask would foolish use stuff favorite airplane Well new fuel shossing up costs about $132 gallon can hought filling station guessed its gasoline fuel used almost i i-scale models Quad ras etc conclude months safety column relate incident constant threat RC modeler no matter proficient well takes care equipment came us via Go/il Coast Flier edited Art Charlotte Johnson Delrav Beach FL happened Florida Air Show Team about perform Florida Atlantic University An incident ten minutes before show time gives pause thought sound model engine starting parking lot couple hun dred yards takeoff site unexpected check Airtronics frequency monitor revealed transmitter 756411 mHz turned out couple young fellows readybuilt bad given no thought conse quences operating radio could hope see Shots Team models ready takeoff ease irresponsible ignorance cooperative ssbcn explained problem invited watch show come Out regrilar club field later wanted help putting models away after show again heard engine startup short time later very loud thud model destroyed itself Sure bard get across some people RC models just toys incident sound engine alerted Show Team members pres ence other modelers However intruders out earshot team would still have learned presence radio signal Aictronics frequency monitor other teams have wisdom purchase frequency monitor An ounce prevention ts worth pound cure John Preston 70/2 EIrira Ci. Falls Church VA 22042 Fun/Winter Continued page 20 take same engine propelter put -scale J-3 airplane will fly slower will cause engine lug down somewhat less peak horse power rpm prop will inefficient will produce less thrust given horsepower output could install dif ferent prop give efficient prop/air plane match probably 18 20-in diam eter would lug engine down would produce less horsepower answer problem either chain saw engine turn larger prop directly belt drive Author gear drive will turn larger prop yet allow engine run its peak horsepower rpm What means Dick concludes engine/airplane/propeller combination compromise larger slower sport-type Continued page 116 84 Model Aviation REPAIR SERVICE FOR HOBBY LOBBY EK LOG ICTROL F UTA BA HOBBY SHACK ROYAL PRO LINE TOLEDOI83 TWENTY-NINTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featuring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days APRIL10 lo presented Weak Signals RIC Club PO Box5772 Toledo Ohio 43613 FRIDAYgamto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm Fun/Winter Continued page 84 models may necessary use larger en gine turning larger prop below peak horsepower rpm order get adequate per formance out model significant point airplane/propeller/engine combination must selected give performance desire Because variables involved usually accom OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING INTRODUCING THE NISTARTERTM Pat Pending new cornpferly rvofrrtronary concept power gf ow pfugs modef cars foats airpfanes helicopters anything using tfre 15 ut Standard pfug glow engines Rechargable lOft tOOO tirrresl Fits pocket Works srdeways rr inverted Fits through cowfings Uses Head Lock TM plug adapter Stays pfug rrot irr propeffer lncf charger & instructiorts 90 day guarantee After rfrar anything faifs normal usagef wif repair replace $6 up hf full year! SEE DEALER OR CALL US BANK CARDS OK COD OK PAY SHfP PING SERVICE $2195 See Deafer 13506 Gfundundee Dr Herndon VA 22071 703f 435-5805 pUshed trial error Prop/plane combinations truly infinite Running engine ground best relative indication Dick doesnt mention prop unloading hut implicit said know prop turns up air sometimes hy 1000 rpm Only plane moves forward ap propriate airspeed does prop blade like wing section meet air proper angle attack 116 Model Aviation GONTULIKI TANKS PROFILEtCOM8A7RAT WIDE ft NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Gustrn Dliii lush Ingredients detailed brochure 50C stamps/check oni CAROLINA-TAFFINDER 8345 Delhi Road charleston Hgts. sc 29405 803-553-7169 GRANDE SCALE 21% ct lMZi- Retracting Landing Gear sa o Flaps FIberglass Cowl Tail Cone Flyingwires. 04 m S SEND TO LEE RICHTER I4O26 W MapleRidge Rood New Berlin WiecONLY SET S Sereow leaded OstartSSET 100 aq ft ineirrdrng Ptrset arrest Shipirert UPS Jolly Ray Marlstrom Britains Bill Hannan cant tell aint lookin Rays Altaira l3Yz-in.span rubber job has lifting-body 19%-in fuselage Weighs 125 oz plane dirty too big too heavy its prop power prop may par tially unload never unload labors like hod carrier just flails air Small en gines must scream props tend small diameters low pitch typical sport models 5 6-in pitches common 6-in generally considered dividing line between low high pitches Try counting 10-6 props see engines approxi mately 40 co displacement know high pitches get high gear like overdrive ship clean fast crate dived descending leg maneuver Low pitch low gear climbing hills accelerating quicklybut like roaring along Autobahn second gear High pitches keep socalled trainer coming fast under power lower pitch brakes approach DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP DEALER DISTRIBUTOR INQUIRIES INVITED 54, FNUINES THE BEGINNERS KITTEN AND EXPERTS TIGER 3Revolutionary snap wing eliminates bolts rubber bands GEMINI MODELS INC Complete kit $5495 dealer direct P0 Bo t t 68 Pnsac NJ 07055 Engine rpm prop diameter play veri table duet terms prop wash strikes against port side fuselage fin etc side profile calls shots high cabin low thrust line may lean right under power like pylon FF note effect slightly battered Kadet being expert find ship gets run ning right takeoff much heavier rudder applications needed especially crosswind left ailerons plus rudder required get zig-zagging runs left easily corrected crosswinds dont matter much nose wheel pro duces wide left turn taxiing takeoff true after occasional brief early touch two right rudder big Sniffer RC-Assist very high cabin leans right regardless torque Vagabond RC Assist turns left torque regardless prop wash Pylon Free Flights normally cant turn left safely under power some RC ships designed go pointed like lowwing Pattern jobs prop wash problem pilots argue never need offset engine thrust typical trainers usually demand right thrust sometimes offset thrust reversal big Sniffer turned right under power removed its right thrust ship became vicious rightit worse Apparently angle prop wash agalnst port side cabin encountered profile smaller angle right thrust present Continued page 120 PRODUCTS von ruc ntrcohh&ufl flflrI PA March 1983 117 speed making things less hectic coming over fence Flying Near Airports Careful Free Flight Radio Control flying near airports situation might involve Ihe possibility models being vicinity ot full-scale aircraft operations must avoidedor conducted eliminate dangerous situations Models should flown proximity full-scale aircraft operations unless flyer has someone else him sole purpose watching full-scale aircraft supervising flying prevent accident possibilities PROTECT YOUR RIGHT TO FLY Safe Flying No Accident Complete Line Exhaust Systems * Tuned Pipes * Muffled Tuned Pipes * Headers * Venturi Mufflers * Expansion Mufflers Helicopter Ball Mufflers Specialized Exhaust Systems Unsurpassed Wnrkmehin ormance Fun/Winter Continued page 116 Once tested fun effects props pylon IT Firecracker MAN circa 1950 Results contrary books tiny one-bladed prop K&B Infant 02 first 02 OK Cub 049 leaned pyloned Firecracker tight left sweeping turn Progressively increasing diame ters and/or pitch opened left power turn end line crate lean ing bard right Luckily missed prop would have looped ship ground full-octave torque prop wash effects Prop wash increases rapidly diameter friend delightful cabin-type rubberFine Quality Flying Models 4 Catalog $150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 powered sport model preferred left/right patterns FF Gas produce S-transition minimized drift wind added rubber torque would tighten left increase climb argued would go right insteadand prop wash would effective torque did Prop wash mighty force given some surface work Such crude test methods used Citizen RC published MAN late 1940s know what improvement glow Arden 09 glow just coming would show over ignition tied crate long rubber strand aliowed accel erate stretching band perhaps 25 feet before crate snubbed stop wee bit unloading difference stretch tangible taching rpm rest Recommended prop sizes find engine best engine reach its max rpm peak power Richard Aley said hut put proper size crate displacement may make much noise go nowhere An inch diameter 7-4 8-4 15 may prove best plane comes alive Power thrust right engine/plane combination through engine may developing its ideal performance planes will fly better engines developing torque prop luggers buy en gines scream crate pleases thats counts works dont fix it doesnt cut mustard know lead sled properly balanced grossly mismatched its engine fine-tune props try extremely modest changes pitch and/or diameter Overpropping tricky thing infinitely likely ruin engine sustained use season high humidity and/or temperature nitro content fuel hot cold glow plugs other jazz have effects example once heavy 6-ft Live Wire Veco 29 summer required mighty heave 11-4 prop Alas since low pitch downthrust will make crate sometimes nose down before wing generates lift increasing speed ia square lift formula ship grazed ground rigid flight path before heading skyward winter 12-5 prop same ship would float off hand taking step climb steeply rocking gently like some huge rubber-powered ROG surprised see Bob Thompsons 120 Model Aviation Its FCS-4 Radio Designed Canadian governments target drone program approved US Armed Forces Training Command Full Command Systems has now brought cut ting edge Radio Control technology hobbiest N FCS-4 Four Channel Radio Wider body ends aching shoulder muscles Angled easeier monitering battery charge Designed easily accept new frequencies Servo reversing simply reversing plug Adjustable stick tension Inexpensive replacement servos 45OmAH battery pack 600mAH & 1200mAH extra Expandable F Full Command Systems 908 E Rosewood Spokane WA 99207 509 487-2122 Get install dont take off -- Ken Willard RCM SERVO GARD SERVO GARO monitors airborne flight battery pack voltage well radio signal received transmitter receiver malfunction detected part che system SERVO GARD reduces throttle automatically ample time before battery failure I safely land nodel SPECIFICATIONS size unit installed KPS-1 4 servo case easy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Puise Unit shipped positive pulse systems negative pulse available upon request SERVO GARD comes complete pro-wired pigtails servo connectors choice installed Ispecify connector type orderl SEE YOUR DEALER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordoringl ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 6311 SW 2nd Street Margate FL 33063 ENGINEERING13051 910-0611 THE LANDING GEAR PEOPLE TIred kit landing gears dont lit year higgis prfpftly o & 0 Engineering can sflfC ynsr prohiemnl * Custuln built tour needs & specs gsaranteed fit * Streng & durable withstand toughest landing * 0 & 0 Engineering gear will wurk & keep higgie hying * In slack replacement gear tsr mast pspslsr models Byrnn Pills Christen Eagle CAP 21 Balsa USA J3 CUB Air Tech Pawnee Eagle Nasen Big Stick Chump Citabna B & mudels Snapper Stinger Snapper Tao photo page 18 December 1982 MA says Mark Fineman Fun won dered what Bob doing several rubber loops attached various fingers like some string puzzle taken 1980 FAC Nats Wright Field Dayton plane Keystone Bomber taken Cleveland plans Keystone Pirate Bomber original plan engine nacelles profiles Bob made three-dimensional Bob appears back-winding Mark goes unfamiliar prac flee pull out two loops rubber holding wind other backwards few turns loops placed prop hook automatically wind up something like braided motor automatically taking up slack might otherwise cause CG problems glide classy rubber stooge conven tional auto photo both Bob shared both stooge car Plans stooge appeared FAC News about year ago Bob tipped off well-kept secret mentioned years Maxecuter Meet will include Bill Winter event Last year Earl StahL Mark expressed diffi culty choosing between plans Mr Mulligan advised top longerons square corners rounded off assumed years ago before accurate drawings released Grumman F3F short-nosed pot-bellied Grumman does permit much rubber weve advised Mark wanted bipe era gay Navy markings might better swept-winged both wings Curtiss SOC-l lightened up modern techniques Any way should weird experience watching what good fliers FF Rubber Scale jobsour bread-and-butter mag projects days no could lift $15 worth groceries Eureka am really building two electrics Im beginnerif want answers follow Poling MB three great features issue saw last night As beginner Ill pass own experiences First Astro Flight has new hot armature two reduction-belt iSs have 13-8 prop 5500 rpm Don SrulIs magnificent Spitfire expect 1000 rpm boost possibly duration Well test fly Spit anon second updated system goes 6-ft Old Square Sides Antique Last night joined John Worth flew Buzzard Bombshell pack 16 sub-C cells old Astro 15 belt drive 14-6 prop OS 90 less full charge flew cold dusk 12 minutes Bill Poythress timed made altitude evaluation crude triangulation calculated got up least 800-plus feet maybe much 1100 feet power shut off glide about sport engine-powered RCjob bit noticeable sink flight 15 min quite possible aid warm air lift New Astro motors coming up will sur pass hot-winds just now appearing Skybo am using geared 05 Leisure electric motor swings 11-8 six sub-C cells look thermalling flights Leisure can give beyond 50% increase motor run 30% increase rpm geared 05 six perhaps March 1983 121 2 ff415 QUARTER MIDGEL Tiff NELSON 15 1st th & 1OVh complete brochure great engine & other quality competition products send 50 cents KUS TOM KRAFTSMANSHIP Box 2699 Laguna HWs CA 92653 Call 714 830-5162 Dealer inquiries invited riiroiuii DRLRIILt El MLL UIfltII IUN Heres equipment yoo need give yoor prop , balance--balance directions Carefully crafted top grade materials BUBBLE BALANCER accomodates 3/101/49/32 prop holes Other sizes available special order Dealers invited $1695 Add $t5B HOWARD B HUEBL DEPT ROS postage handling Mino add 4%sales taa No ttlBs Bo 02 Rt 0 Mankoto MN 00001 rOROER TOLL FREE 800-854-8411 IN CALIFORNIA 800-472-8456 IN LOS ANGELES 714963-9881 UnY p mall 18480 EANDILIER CIRCLE FOUNTAIN VALLEY CA 92708 Super Discounts Now PRICES GOOD THRU FEB 1983 POWER-START STARTER Powerful 12 VDC electric starter 049 ng ines planes cars & boats NO 1153862499 LIST $4995 FUTABA FP-4L 4 channel sysyam w th 3 servos full Nm-Cd operat servo reversing switches trays hardware frequency flag nasruct book $1999511999 &IL5 P-51 Mustang NO 526327 P-51Mustang Fun ScaleLIST $4495 R/C wood kit Span 51 Area 490 sqin. Engine 19 40 Radio 4 ch name address city I I statezipI mail order catalogs 18480 BANDILIEE CIRCLE I I FOUNTAIN VALLEY CA 928708 • UPEANUT SCALE UODEU I/ ZERO PIETENPOL PIPER CUB ANDRESON MUSTANGLACEY M-10 jPowred PRAIRIE BIRD 4 KIT $595 Kit $596 MILES M-18 ORUINE COUGAR GIPSY MOTH GANAGOBIE SPORT MODElS BABY ACE$649 ONE NITE 28$696 ONE NITE 16$596 STRINGLESS$496 PECK ROG$196 RADIO BLIMPS CONTROLLED II nd 13 FOOT LONGKITS OR READY TO FLY Now IN THREE COLORS GRAY ORANGE YELLOW Low PRICES seven sub-C cells new generation mo tors being developed both manufac turers Theres lots month Id like show some tips Bob Kopski appeared info sheet gave out Annual Electric Fly Hatfield PA wiring diagram SEAM Newsletter remarkable publication join SEAM want keep up $1000 Society Electric Aircraft Modelers 11632 Flamingo Dr Garden Grove CA 92644 Youll shocked Bill Winter 4426 Altura Ct Fairfax VA 22030 Zephyr 1100/Owens Continued page 30 nose fairing add F20 / 16 ply tongue slip-fit between fuselage sides Remove F 17 install wing now carve F17 match wing upper surface Install F17 hatch using 4-40 screw Finish carving F16 F17 obtain rounded smooth contour blends fuselage Install reinforcement blocks tow hook sport flying prefer simple bent screw hook can made cup hangers prefer compete use capture/releaseable hook shown August 1982 Model Aviation uses Fourmost hook easy-adjust method Install fuselage F12 filler F6 top sheeting Trial-fit tail permit alignment tail skid dorsal fin Carve sand fuselage corners rounded section shownjust enough expose FD- triangular stock Leave wing tail saddles flat extra strength competition fiber glass entire fuselage Starting tail apply layer l-oz cloth up F6 layer 4-oz cloth F6 F3 two layers 4-os cloth F4 nose block Use toilet paper soak up excess resin before cures minimize weight gain Sand resin/glass coating #120 grit wet-or-dry paper resin tends clog paper add little dishwashing detergent water wetsand Apply thin final coat resin plan paint fuselage recommend Sand final coating #180 wet-or-dry Spray-paint favorite color material Install servo solder threaded end-fittings control wire Trial-fit tail surfaces control horns cutting wires length Covering encouraged use little imagination selecting color scheme Use several colors have large areas contrasting dark light tones underside prefer have fuselage inner wing panels vertical tail light shade wing tips horizontal tail dark get big boomer three dark areas spaced wide apart sepa rated light tones will help maintain visual contact MonoKote preferred covering material However new Coverite Micafilm will save couple ounces considerably tougher Micafilm seal down edges CA glue before shrinking not-so-hot iron tempera ture Omit covering time lower extension fin spar also stab center line attaches fuselage Separately cover rudder ele vator spoilers attach yet After shrinking covering go over ribs other framework seal down truly necessary wing undercamber Tail assembly Temporarily bolt wing fuselage serve reference cor rect alignment horizontal vertical stabilizers Place horiontal stab posi tion aft fuselage view rear fair distance aligned sand high side fuselage Apply 5-mm epoxy stab saddle clamp place viewing angles adjusting necessary perfect alignment including fin slot should straight ahead Connect elevator control clevis elevator horn Apply heavy coat Vaso line mid-portion elevator joiner wire apply 5-mm epoxy stab around slot joinerin area Vasoline cured epoxy serves zero-slop bushing 122 Model Aviation IN STOCK POR iavumuisei c mir-iviEii New 22 CID QUADRA$10495 Rag 22 QUADRA *6496 wIlt Brtslgheila Flywheel *11496 Reg 22 QUADRA POWER ASSEMBLY ONLY*5496 QUADRA REPAIR*1000 pins parts PEsW RADIAL ENGINES Fleet*2296 JIm Messer ERCOUPSPLANS $2296 KIT *22996 Jim Memr TOMAHAWKPLANS $2296 KIT *24996 BALSA BASSWOOD 111 slasal36% OFF Concept FLEETKIT $17996 FG COWL $1996 QUADRA Snal tanksiSo *69622oz *796 vICKERS LEWIS MACHINE GUN KITS$1496 ALL CECONITE PRODUCTS10% OFF PLANS SUPER STEARMAN IGodfrsyl*3600 STARDUSTER TOO IBrIsIghelial*2996 scala J3 CUB mallS FLEET IConcept*2996 VOLKSPLANE IChlckan Charilel*2296 FLY BABY $1596 SE-B IRanechl *2496 COCKPIT KITS Tomahawk F4U-1 SpItfire $2196 Ercoupa *1996 Stearmnan *2096 Citabns *2496 J3 Cab *1995 ME109 $2150 Flees *2096 FIBERGLASS ARROW SHAFTS W16~ 622 1g61*1000 24-Hour ServIce. Add $250 postage Send Bank Check Money Order t JIM MESSERS QUALITY MODEL PRODUCTS 106 Valley View Dr. Allegany NY 14706 $100 NE 6194424636 eta 4695075 LA MESA CA 92041 FGK SERIES FP-5FGK 1U3 NEW NEW YEARS ready-HA j POSTAGE AND HANDLING CHARGES 1U I$000 $2500 add $300I I$2501 0 add $400I Over $5000 add $500I El California retidents add 6% state sales tax I