MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA
Edition: Model Aviation - 1984/03
Page Numbers: 18, 19, 20, 21, 22, 24, 26, 28, 126, 127, 130
MARTIN BUNN terrifying math professor George Patton mold read Congressional Record Students passed deserved Congressional Medal Honor got Purple Hearts Bunn never called far out dubbed Perfessor might begin drawing line end blackboard having told us no such thing straight lineand isnt fill boards around two sides room some incredible adventure logi cal wizardry As Bunn would say Lets assume straight line straight line request Dick Kordas address Bob Nevin Bob old-timer Hes AMA mem ber has brother Baltimore Like thousands others gray area Bob gets see Model via don Nevin lived Cleveland flew Korda once took Nats second Mulvihill Akron 1934 twin pusher flew FF CL before turning Scale modelswith differ ence began endless proces sion fabulous Cleveland rubberpowered Scale models intended flyalthough never saw did Cleveland models delicate made beautiful repli cas people like Bob loaded details hung up admire Now builds incredible models Smithsonians National Air Space Museum Bob spent 37 years Glenn L Martin Flight Test Experi mental Departments mechani cal engineer Special Test Section loves Pietenpols talks Ber nie just finished after 18 years showcase full-size airplane fly about later Nevins Curtiss 1911 Hydro singie seat -in-to-the-ft scale just de livered museum Bobs 9th muse um project model required mere 500 hours build first project Martin MB-l bomber twinengined biplane forest struts wires required 1200 hours Assign hourly rate think craftsman deserves youll have inkling what things cost once helped referee [a committee] deciding fee another mans museum modelwhich ran modest $7000 valuable Bob says have engineering mind order visualize constructional methods early aircraft occasions complete data pictures available past experi ence mechanical design background important wont find display models main floor National Air Space Museum will have ask visiting see ex tensive collection housed upstairs large glass display cases under atmos pheric-controlled conditions Ordinary modeling techniques used museum models because normal model would deteriorate wing flying surfaces have very strong no balsa can used Nevin begins An ideal material 1/16 OD brass tubing can formed shape soldered together give final structure duplicates thin double-covered wings early Curtiss Wright Bleriot similar machines Generally covering silk dope sealing proper colors Other Curtiss 1911 Hydro two views shown latest series superdetailed models built National Air Space Museum Bob Nevin Materials methods totally different used Scale models common us because deterioration age must mini mized models kept under atmospheric control sealed glass display cases took Bob 500 working hours build has down science An avid general modeler too retired engineer pilot yen home-builts spell Pietenpol 18 Model Aviation U lust fun Bill Winter Bob Nevins pristine Piet took 18 years scratch takeoff Its fullsize model powered Ford Model engine Modifications include longer wingspan f use lageand added aileron area two-holer flown Denvers 5300-ft altitudehence changes Nevin friend Bernie take mean Mr Pietenpol raves about hop Bernies 25th last PieS Aside heavy-duty stuff Nevin built himself materials hardwoods like maple ma hoganysometimes spruce white pine depending application use 010 brass sheet fittings cutting drilling filing shape Small copper wire can flattened bent soldered make parts rigging find drawn nichrome wire ideal bright never seems tarnish control cables nylon sewing thread works well After installation does loosen weather some cases new quick-dry cements epoxy fillers helpful General assembly follows original aircraft closely Nevin goes using final flying landing drift wires get rigid structure same original Bobs MB-l complete detail controls work cockpit including stabilizer trim Constructed exactly like original can disassembled same way addition Martin Curtiss Hydro other museum projects Nevin include DeHavilland DH-4 Curtiss A-l first Navy hydro two models con structed Curtiss 1911 Flying Boat uses Wright twin-tractor design chain drive Wright H5 Twin Pusher full fuselage side-by-side seating swingover control engine front wing warp ing Bleriot Penguin Trainer Since models cant removed display cases NASM folks have searching out photos us made earlier gems now show photo early Hydro snapped Bob Nevin prior its delivery photo doesnt justice Back May Bob said Ford Model A-powered Air Camper would fly two months photo taken last year during taxi tests mag timing problemthe Model now runs sweetly mag operating OK Bob re ports gained 200 rpm top end can idle down about 400 rpm experience tells am going need 2000 rpm top ground static get airborne 5300-ft Denver altitude think will OK pilot no passenger Piet has under construction long whilebut well worth min ute time exception engine Bernies specs March 1984 1 Q French Farman 400 appeared 1933 Paris Air Show Winter has visions mod eling six-footer 05 40 four-cycle Span original 38 ft 5 power inverted Renault 120 hp three-seater pilot plus two-abreast passengers its maximum speed 121 mph range 497 miles efficient tourist design Despite early vintage flaps general compared such postwar types three-place Piper Super Cruiser did 128 mph 104 hp flaps later added late-40s Piper others such Cessna 120 140 Photo Smithsonian Institution Tom Mahon former Air Force pilot VIP squadron toted mysterious comings goings big models Giant Scalers could counted fingers hand Winter says once puzzled Tom demonstrating rudder-only deBolt Rebel Long Island sandpit Pictures show Toms latest Giant Scale Fokker D-VIII authentic markings has 20-year-old giant KG now getting Enya 90 four-stroke Royal Quarter Scale Super Cub Moki 15 D-VI D-VII need restoring midway 12-ft Fairchild F-22 enlarged Flyline kit-plan details added Left You probably didnt see pic reports Nationals What Don SruIls Alco Sportwhich won Outdoor Rubber Scale tvent Fulton Hungerford spoked wheels greatand look scale engine hanging out breeze remember rubber-powered nodel Its future MA construction project Tom Schmitt photo Right Whats kind picture skin doing family nagazine Its Hank Clark skimming water Lake George conditioning himself midnight-oil-burning session next MA cutaway Above Left Described Bill Hannan human dynamo Emanuel Fillon France has worlds truly great modelers least two generations winning Wakefield Cup days Korda Cahill Copland etc versatile ever thinking nothing successfully flying tiny rubber-powered ducted fans photos photo/tape presentation San Diego R Aime 1982 shot labeled simply Monsieur Fillon E Above Right Fillon thrives frontiers state art witness Solar Challenger electric motor solar panels doesnt appear RC Does fly day Below Left Fillon Coupe dHiver contest 1979 detaches hk winder high-tech model Below Riqht Versatility about Spanish Hawker Fury Peanut sizein foam sticks tissue screen door stock since requires no aerodynamic loading stress struments antique due age necessary gut airspeed unit install new old case New dial looks old used plans originally pub lished Modern Mechanics Inven tions other few changes Piet close stock modelers ones use downthrust such Piet has four degrees down works fine After Oshkosh few years ago Nevin goes stopped see Bernie home took out air port showed Piet working 25th last would build Corvair en gine 90% complete Two years later saw completed project get name young man proud owner did get ride super little gem will top out 100 mph still come over fence 40 mphsome ship Bob Nevin types virtually really active flying site large club includes unknown surprising number remarkable people never let Often fliers much interesting models have such things crank grinding block boring etc construct ed part myself did own welding Most wood Douglas fir marine-grade birch plywood required As projects made few 20 Mnd~I Auiatinn changes wing three pieces spans 30 ft instead 28 fuselage 12 longer ailerons about 1 sq ft larger area used light-gauge galvanized steel fire wall instead aluminum engine cowl other aluminum what call turn Arabian Nights know cant survive tales Vir ginia Outback Two good flying days made up nothing summer glow engine flying also some cool eve nings nearby schoolyards parking lots mesmerizing myself spooky Electrics cant find time buildor maintainanything fuss end lessly drawing board type writer could find ready once ancient Vagabond RC-as sist wonderful last-forever K&B Veco 19 4-oz tank 9-5 nylon prop put down add pow er presently moves skims off WW stylein direc tion depending wind across strip does lazy circles half throttle flies nearly 20 minutes near idleand glide frozen time stand cross-legged mo tionless Someone comes out ask am awake snores pits sound like distant seashore somehow got courage fly big Krackerjac spoilers Freder icksburg first 15 flights liked what saw problem re member am bleary-eyed rooster overshooting short fields hence spoilers now approaches erratic Gawd what now wanted float suddenly throttled back too much Sure enough forgotten 1/16-in shim behind top mountused very first test flight know downthrust syn dromePattern fliers avoid like plague sport cabin models flat-bottom wings may actually necessity have never seen ny ship sensitive such small downthrust own cabin modeL unflown Eaglet OS 15 Master Airscrew 8-4 built stages order make photos recent book Duty said should flown once least am glad did Its three channel wanted see something myself watched guys snowplowing Eaglets others grass 1 5 engine insisted have 25 least Rubbish always use one-size-larger wheels grass pull down nose gear strut ship sitting nose down arent problems Some people claim wings flutter break Strength adequate kits acquire sad reputations well-built powered flown directed can see ships flown double triple speci fied displacement go violent aerobatics what should docile trainer may require 2 x 4 spar pictures show structural things related Eag let two turbulator spars aft antiwarp spar plus rib diagonals guys dive pull out yanked full elevator ship would stay togeth er engine could manage lovely 1 5character istics just beautiful coordinates per fectly follows stick zips along fine power landing patterns perfect didnt have think about Guys startled What happened asked replied Carl Goldberg designed designed other Carl Goldberg tells investiga tion has isolated insufficient rubberbands cause five out six complaints spar strength has increased Dont crunch wing rubberbands throwing around ship excess power careful unable hold down big Krackerjac wing rubber ropes though fly gently 40 60for its 6-ft span add front wing dowel like Pattern jobs know little RTF guys Continued page 22 Msurh IQA4 21 Left Hobby Lobbys German-made Klemm classic near-poweredglider 20s 30s has mentioned often columns readers Winter asked Bill Kaluf show hit word youd better have slow idle because youll never get ground otherwise big low-pitched club prop prevents overdrive approaches has Saito 30 four-cycle engine Right Jim Smith first model has built since kid own kids snookered him action sending engines electric motors kits etc until broke down Its also first RC plane opted Leisure Playboy 05 electric motor ran Winter Srull first time out spiral down high altitude first model thats nifty piece work Winter wonders anyone ever has fun Control Line modeling nas caranoara ooxes Tuli letters about CL Stu Richmond sent shot friend Peter Zawada Posnan Poland latest F2B CL Aerobatics model Stu says model lost practicing Polish Nats extremely bad weather conditions Comments Stu us have humbling experience least ready accept Yea verily Gal Price Drum Price TypeNitro 0/oLubricantFreight PaidFreight-Collect FAI0%Synthetic $ 675 995 5s50/0Synthetic $ 775 995 Sc50/aCastor $ 775 995 4cyI70/0Castor $ 850 995 lOs10%Synthetic $ 895 995 lOc10/oCastor $ 895 995 RIG120/oSyn & Castor $ 995 995 iSs150/0Synthetic $ 995 995 20c200/aCastor 5 995 25s250/aSynthetic 5 995 40400/0iSSyn-SCastor 5 995 5050o/oSynthetic 5 595 60600/0Synthetic 5 595 tIe contl5uous US EXCEPT 54 GAL DRUMS MINIMUM ORDER 4 Gal Asst OK DISCOUNTS 24 63 Gal Deduct 50/a Asstd OK 64 Gal Orders Deduct lOots Asstd OK SHELDONS HOBBY SHOP 3157 Alum Rock Avenue M/C VISA San Jose California 95127 UPS COD $165 408 251-0787 Charges up two transmitter four receiver packs simultaneously overnight Charge rate programmable up 120 ma Can switched trickle rate contin uous charging 34K55Ace Chargemaster Kit $3695 34K55C Ace Chargemaster Asbid $4695 Send $200 complete catalog Ace items available dealer must order direct add $100 handling fee Hours Mon-Wed Fri & Sat 930-530 Thur 930-900 Sun 1200-500 insisted flying 40s man ufacturer put Brooklyn Bridge join er stop collapses now plane mongrel due its weight Inspiration bigger Eagle ailerons just what need 1984 40 four-cycle too already volved highly modified Sig Kadet Farman 400 6-ft-plus Scale job another truly crazy Electric cant build what Lets begin Kadet son Mike up north offered build another Kadet first still goes demolition derby survivor So am having him cus tomize new mimic certain full-size planea tail-dragger flaps Farman 400 Several outlines rubber model plans exist notably Hurst Bowers plans late George Meyer Texas built now hanging AMA Muse um Its green silver high-wing cantilever cabin early 30s vintage huge flaps inexplic able things Very little information exists French aircraft because destruc tion during WW II occupation Bow ers found 1933 Janes Worlds Aircraft rather early flapped private aircraftwhich exist before 1932 400 fixed tail skid obviously grass-field airplane Examining single photo un der magnification faint line suggested strip ailerons la Fairchild 22 French model plan Hursts file showed broken outline flap implied split did exist wider chord barndoor aileron shown bottom fuselage rounded off AMA Museum modeL Surely Bill Hannan Farman specialist could help Nothing Warren Shipp didnt know either thats first Hannan sug gested contacting Alain Parmentier French modeler proves seems know much about big museum France Alain returned accurate wing planform measurements meters flap much longer span ail eron both have same chords both tapering proportion canti lever wing outline fuselage bottom flat board extended ex haust ran under cabin far aft centerline much starboard side Smithsonian photo printed taken long-ago French Air Show 400 first appeared Tail cross sections finally determined copies old French photos have slight sym metrical camber ground shot suggests stab flat-bottomed model-type lifting tail Alains examina tion early magazine appears confirm no absolutely Continued page 24 99 Mndpl Aiwtit-n High film strength lubricant increased power long engine life Detergents cut performance robbing varnish Highest quality ingredients insure top engine performance reliability CIrIe IIlc3SLer [AU E/ mci P0 BOX SitE HIOOIN5VILLE MO 64037 816684-7121 Discriminate Scale Fliers Demand Dave PlattI m perfectionist 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/S scale Accurate last subtle curve Magnificient indeed just sitting simply awe inspiring flight Powered 90 120 glo engine br Maximizer ultimate Spitfire ll provide intense experience sophisticated RIG -Span 8W Length 76Weight 15-20 lbs $ 47modeler Grand bold flies great staying easily transportable 1/5 scale 79 span over 1000 sq ins 90 engines / Bucker Jungmeister regular direct drive engines 60 90 65 span 1/4 scale ace aerobatic biplane time Still fits car $139 79 New 1/4 Scale Pilot___$139 Supplied unpaintAlso ed comes anAvaI1ab1e 1/5 1/6 scale World Retracting struction booklet Pilots full Landing Gear $30 War II FighterNow Strengthened $25heavier ships figureCompleie system $139 HOW TO ORDERDireci manufaciurer Ino markup Write call.ise accept check money order Master Charge Visa cards pay UPS anywhere USA ltlorida residents add 4% sales tax Yes accept toreigo orders pay treight niormal on model send sell addressed envelope nave Dlatt ivuodels inc 6940 NW 15th Street Plantation Florida 33313 Phone 305 587-4861 Nvi ojlilivrvd ih uric viSa comvvvs 384 TESCONI COURT sure 400 also has very wide strut axle up cabin top Janes says upper portion rotat able drag brake Imagine before flaps addition days manufacturers rarely built two civil craft row exactly alike search truth about old airplanes adventure filled gee-whiz surprises Don Berliner frequents Na tional Air Space Museum pitched located photo brochure 400 created stir since 400 brochure known exist after war Berliner arranged Xerox copies us Parmentier presum ably museum France Bill Kaluf took fancy 400 builds like cabinetmaker So traded Hed build would sup ply materials 0S four-cycle will hangared south suppose will fly occasionally Eagle Another trade Kaluf airplane factory takes old Futaba systems gets keep four-cycle Farman probably year 2001 Since Kaluf has four-cycle Doug Pratt lends MRC 35 four-cycle supply power system Doug build test model new Electric still Fellow modelers let tell some wild things about Electrics have Control-Liners viewpoint model Theyre supposed fly want no nonsense hate tweak low-speed needles trouble shoot anything just expect per formand refuse become nuclear physicist So dont expect textbook stuff Electrics remind comedian Red Buttons used say Strange things happening days tons says deserves dinner Red great roasts Electrics deserve din ner Churchill once said Russia mystery wrapped inside enigma etc Electric modeling like series toy eggs fit inside otherto infinity aircraft jet fighter lightplane models Rubber Gas Electric CO-2 have level flight maximum duration capability depends among other things percentage weight energy source gross weight wing loading Electric crates having sim ilar attributes come down earth about same flight time Precisely same thing true Indoor models devine Rubber Scale jobsif forget artificial inputs chancy lift same laws apply glowpowered RC virtually unlimit ed energy dont worry much Continued page 26 TOM BRIGHIBILL out 125 pilots WON NATIONS HIGHEST SOARING HONOR TROPHY HIGHEST OVERALL SCORE 1983 NATIONALS based 24 seven minute flights per pilot eliminating luck factor Tom flying 3 DODGSON DESIGNS MultiChannel gliders achieved victory 3 ships feature incredible Eppler 214 airfoil SIX WINOSONGS flown 1983 Nationa]s FOUR FINISHED IN THE TROPHIES including BOB DODGSONS 2nd PLACE OPEN CLASS WIN WINDSONG has CAUGHT STARTLED SOARING WORLD NAPPING its 205 have seen what can KNOW WINOSONG clearly has NOTICE ABLE PERFORMANCE ADVANTAGE over best thermal competition ships features 134 wing span foam core wing stab & rudder flap control -6 80 degrees elevator compensation rudder coupled trimable ailerons can reflexed like flaps cruising reflexed 30 degrees serve spoilers flying stab See NEWLY REVISED 1 hr VHS VIDEO TAPE showing 3 PLANES ACTION CONTROL SYSTEMS LINKAGES APPLICATION FIBERGLASS FIN/TURTLE DECK FOAM WING building sequence Send $25 $20 deposit/$5 ship/han Send 2 stamps complete catalog three multichannel gliders featuring SOLIDCORE WINGS SEAMLESS FIBERGLASS FUSELAGES EPPLER 214 AIRFOIL FLAP AND AILERON CONTROL AND NEW STANDARD OF PERFORMANCE Windsong $19995 Camano 100 $15995 2904 SW Camano Drive Camano Island WA 98292 K-Minnow $14995 206 387-7412 JJ about weight dump energy wild rates howling Schnuerles pipes can design Gas model spends energy slowly can fly two days Limit RCM 40 2 oz fuel youll driven clever ideas Bob Davis diesel man turns 7-in prop good rpm CO-2 02 conversion has turned 11-8 An 02 11-8no way Davis Diesel has good support stuff now new tanks etc can fly RC CO-2 duration indoorsand possibly outdoors Gus Munich flies 300 sq plane 5-to-l geared 05 electric motor huge folders gets 10 mm 1 0-mm charge spectrum credible same combo will fly sixfooter over 700 squares weighing much 80 oz still over 10 mm full charge Suppose nice little 05 15 25 available gear ratios reduction up 51 101 Will 25 turn Quarter Scale-size 18-6 Take off lots fat wood prop Lord knows what sort designs might fly direct-drive glow 25 wiil turn Eaglet inside out 40 turns Falcon 56 demonbut Electric varied energy consumption used high reduction ratios wee engines would manage task dont sug gest Lightly-built giants would fit station wagon unless came apart Bob Boucher kept asking please least try Astro Cobalt 05 directdrive 7-4 prop put Le Crate astounded find duration about equal 05 2l reduction 11-7 prop guess kind proves equal battery weight equal wing loadings should give equal duration could go smaller motor still have bomb ailerons flaps hot old man could handle itand yet 8 mm suppose 51 reduction 40 co balt could carry small sonif pilot please dont try special Astro 40 has carried man Don Sruil scientist once en gineer Convairyou probably know about modelingopens tantalizing vistas Now before tell about odd Electric have boards let try report magic formula will extract few things four pages notes First know achieve reason able duration Electric RC model 25 35% battery weight forget motor gross good 20% borderline dog higher percent age greater duration up 66% B-36 bomber no matter whether spent burst over long flight tough build airContinued page 28 26 Model Aviation Magic Dragon Trainer Fox PreBuilt Price $9995 Engine 25 Cu Pre-Built Price $1 2495 Engine 40 Cu Wing Span 55 Radio 3 4 Channels ng Span 52V2 Radio 4 Channels balsa construction Ready fine sand coverAll balsa construction Ready fine sand cover Control surfaces hinged Hallco landing gear 5/32 nose Control surfaces hinged Has holton wing HalIco Ian gear strut Fitted canopy Instruction booklet hard- ding gear ABS wheel pants mounted axels installed ware includedFitted canopy Instruction booklet hardware included ADEALER INQUIRIES INVITED6 Other ModelsSend Free Brochure Send check M0 Credit Cards accepted Add $850 UPS shipping 3SOPSI carton FL ms add 5% tan 3ECH RIC990 16th Street Palm Harbor Florida 335638131785-8560 1973 DAE Revolutionized Modeling Statement Now Battery Can ALL AGAIN DAE ADVANCES THE ART OF ELECTRONIC ENGINE STARTING LOW POWER CONSUMPTIONOnly 800 milliamps maximum battery drain SOLID 15v PLUG OUTPUTMaintains 15v starter LIGHTS ANY 1/2V PLUGAutomatically adjusts current plug needs EFFICIENT OPERATIONNo Starter MARK Vlcan also run 6v battery FEATURES AMERICAN MADE QUALITY PULSE DRIVER FOR ANY 1v PLUG 6v 12v FUEL PUMP SUPPLY DIRECTIONAL PUMP FLOW SWITCHES 48v 96v FAST CHARGER AMMETER MONITORING PLUG CHARGER CONNECTING HARDWARE INCLUDED Only $4795 SEE DEALER FIRSTADA Entelpilses unavaIlableOrder DirectI4PA4 Phs N. sa 7g40U WINNERS Fiat platinum coil element Ceramic core Idle Bar Idle cap frame light enough allow such high percentages formula applies thing example shows Bob Whites great Twin Fin Rubber job 50% its weight energy should about 5 mm dead air does incorrect think terms reducing battery weight Electrics since added battery weight increases duration though wing loading would higher Consider have Ranger 42 Goldberg foamie among efficient models ever designed ideal electric motors well glow RC 42 span tiny Astro Super Ferrite 05 Srull installed six-pack sub-C cells grosses incredible 38 oz giving wing load ing 228 oz per sq ft Thats prob ably equivalent very roughiy 50oz loading Quarter Scale hard heave 8-4 nylon did 6-mmplus wood TF Power Prop 7-5 did over 8 mm easier launch high would wish get glided bit fast clean about like RCM 40 landing just fine probably would ROG off long strip pavement An 035 motor would correct Seemingly vio lates rules common sense Yet Incidentally Electric nuts draws static 106 amps 8400 rpm higher-pitched smal ler-diameter wood prop 136 amps 8000 rpm nylon fig ures tell story 8-min-plus ap proaches 460 sq floater Super Ferrite Astro 05 075 seven cellssame motorand low er-priced sleeper Dons formula tells us Ranger 42 doing about 24 mph Le Crate 16 mph six-cell load 18 mph seven cells Nowthe formula Maximum Duration equals 132 times battery weight over total weight ounces times 1 over square root wing loading ounces per sq ft answer duration minutes equations 1 32 factor calibrated Srull Sparky LeCrate test flights during last year typical sport models ultra-clean powered sailplanes factor 150 may closer draggy Scale jobs bi planes factor could drop low 110 108 oz per sq ft 38 oz gross six-cell battery weight 28% gross Now take wing loading square root equals 329 divide 28 329 multiply 132 swer about 11 mm maximum flight so-so flights average about 9 mm have done 1045 under ideal conditions heavy cool air after sundown sons 05 Leisure very heavy con verted Midwest Champion originally glow 15 predicts 8 mm its seven cells get about 81/4 minI Continued page 126 28 Model Aviation ADVANCED INTEGRATED CIRCUITRY Send Sl catalogue ox 31228 lndpls IN 46231 Er holder near plane sud denly No 2 engine inboard engine left wing started sag due trash cold castor something fuel instinc tively reached around No 2 engine pro peller quickly adjust needleright through No 1 propeller screaming full bore Ow Extremely severe lacerations incurred back right hand impact killed No 1 No 2 died anyway wing helpers came over killed No 3 No 4 did later complete exhibition flight though considerable pain wrapped hand myself didnt go doctor until Mondayand after noticed some unusual bone movement placed little pressure fingers right hand Lets look what caused accident First delayed getting plane ready until last day didnt have act together second didnt give myself enough time day demo too much hurry third too much concerned tying up circle too long preoccupied fourth coordinated helpers should what therefore leaving insufficient help up until launch fifth stupidity previous four items re sulted wrong move could have let die got helper back restarted Fifth stupidity again though knew injured quite badly bleeding long deep gashes back hand deep pain armpit slight nausea neglected go doctor have treated also told stupid analysis going some thing used doing regu larly prepare well advance let desire get job done cause hurry point forgetting careful Al ways coordinate helpers will know what sure have enough help last probably important have ac cident injured self-diagnose injuries doubt serious see doctor should constantly aware adja cent engines running hand-starting careful get running engine either starting flip passing through after flip best use electric starter multi-engine air craft Marvin included pictures scratched safety glasses letter However came time write column couldnt find have recently moved new home will no doubt remember takes find everything again Have safe month John Preston Model Aviation 1810 Samuel Morse Dr Reston VA 22090 Fun/Winter Continued page 28 used 11-8 prop though manufac turer Leisure recommends 11-7 LeCrate seven cells 41 oz 134 wing loading should 1006 accord ing formula Thats exact average dont come up formulas prediction something wronglike prop cant go Dons prop work too much relates best propel ler diameter airplane flight speed wing loading LeCrate 12 14 An efficient pitch/diameter figure region 60 70% indicating 7 10-in pitch am using 11-7/2 Rev-Up 21/21 reduction am now flying 12-7 deBolt-modified Y-O seven cells 381 reduction guessing right direction glide find LeCrate two different airplanes depending whether use direct drive reduction drive because dont have folder 21/21 381 larger props really change glide seven cells glide faster Thats wing loading factor work though terms max duration important advantage battery weight prop free* * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse $225 Cat No 202 Air Cleaner Fine $225 Replacement Inserts Cat No 104 Pk/2 Inserts Coarse $195 Cat No204 Pk/2 Inserts Fine $195 FITS MOST ENGINES 25 UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 U orasriU man nru lar inquIres/For. ncr .nisnfls ROOKIE Super beginner di 60 wing span $2799 CITARRIA65 wing span25-40 power$3399 SCALE KITS CHAMPION CITABRIA Owing span 60 pwr & up $6499 BUD NOSEN TRAINER 102 wing span 60 pwr-up $5599 PIPER CUP J3 9 wing span 60 power & up $7588 P51-B 102 wing span quadra power $10899 P-5 1-0 102 wing span quadra power $10899 1933 GERE SPORT 8 wing span 60 power & up $8999 CESSNA 310 TWIN lOwing span twin 60 pwr $12299 MR MULLIGAN 9 wing span 60 power $8499 F4-U CORSAIR 109 wing span quadra powerwrite/caII Other kits & accessories available for price Catalog $200 126 Model Aviation Safety/Preston Continued page 123 wheels against motor magnets speedup glide can hear gear whine claim freewheeler costs 40% glide top seven cells allow glide fast glide duration cut 50% compared holding nearmush glide normally spells unac ceptable sink far better freewheeling rpm driven higher fast glide speed Also freewheeler plane extremely insensi tive glide trim slow large up elevator movements small 7-4 direct drive drag way down glide big freewheel er evidently dampener control sensitivity stalls 7-4 trim quite sensitive surprising easy partial-stall mush through turn Thats largely due being able permit ship glide efficient airspeed resulting greater control sensitivity Remember said performance about same both direct geared 05 suggests crossover somewhere between modes power whether either can better worse depending big airplane loaded Probably main conclusion use geared motor efficient large prop plan fold goes Free Flight well Mad Test Pilot Srull re minds amperes times volts equal power watts rate energy expen diture motor hate jazz Heat loss Electric system proportional current squared halve current loss decreases four times So says cells voltage suggesting maybe smaller cellslike new 800s allows use less current drain unless load things up screwball prop still keep same power probably direction will go try improve efficiency Elec trics varies fiddle way want machine fly skyrockets floaters oversimplify Continued page 130 JOIN THE MINIATURE AIRCRAFT COM BAT ASSOCIATION Only Voice Combat Monthly Newsletter Establishing Top 10 Flyers Category Top 20 Flyers Overall T-Shirts National Placing Numbers Available Technical Reviews Specialty Equipment Advertised Get Started What Buy TO JOINSEND TO Send *9 ApplicationGARY FROST Name ___________________________________ 1012 Bedford Lane Baliwin MO 63011 Address __________________________________ N Y March 1984 127 RADIO RIG nErgonomically designed maximum comfort aAllows greater stick sensitivity aStraps transmitters nonpermanently aConstructed lightweight aluminum pad ded soft durable neoprene rubber Fully adjustable neck strap *Fits radios except Kraft Gold Spectrum Series single-stick radios Hand-made USA Only $2295 Order Specify transmitters Send money order certified check allow 3-4 weeks personal checks clear fast order cailfor COD cash Shipping handling charge $295 per order plus $ t 65 C 0 D N Y state residents add 9% sales tax Patent Pending Send orders Jeremy Waltzer Designs PO Box 532 Jericho NY 11753 call 516626-1128 Dealer Inquiries Welcomed cells probably means cost complex charging need balance cells trickle charging Nice know dont expect Im ever going get far new airplane paper predict ed formula 8 min-plus six cells direct-drive 05 Co balt between 9 10 mm seven cells 7-4 prop wonder about 7-5 wood prop Super Ferrite 05 turning its 8-6 surprisingly-rea sonable drain may interesting went down LeCrates 460 squares 405 squares Heinkel look-alike low-winger flat center section Contender-type flap approach landing ailerons no rudder hot pilot could fly 10 15-size motor direct drive test ship OK plans can blown up re duced size several ranges motors large sizes either direct reduction drive Things can furth er juggled size choice anything bomb near-sailplane perform ance Doug Pratt will build size Bill Kaluf another will make third Motor cells under wing low C G mounted radiator-like detach able tunnels Its thin paper dart larger sizes cells could ternal Also rudder versionstwo dif ferent dihedrals rudder ailerons news next spring Always Gas modeler think proposed Electric would make tremen dous sport Gassieaggressive looking simple Now feel like building too never easy answers Wanna trade Bill Winter 4426 Altura Ct Fairfax VA 22030 writing advertisers mention read about Model Aviation Watts Up/Marron Continued page 36 motor power pack avoid having motor switch accidentally turned expected perhaps causing accident pack permanently wired kill switch should installed CG should just forward spar first flights Range-check radio Assuming checks okay hand glide model pushing away wing level nose down slightly flight path should long flat needing little control input elevator adjustment required im portant note servo arm must centered neutral ON/OFF switch work properly Therefore make adjustments pushrod ends elevator trim satisfied glide switch action connect motor power pack Cau tion please point make sure clear prop Turn motor blip full-down elevator firmly throw plane its nose pointed slightly downward ship will pick up speed start climb respectable rate 1 mm should high hi-start Sailplane launch still climbing although slowly After about 3 mm battery will fairly well used up another quick blip down used shut off motor ending free ride Now will have find thermal want keep up wild blue Watts Up thermals beautifully long lazy summer afternoons trims can adjusted wide circling flight lie grass watch show As gliders plane lands self fairly well perhaps 20 ft high just turn wind keeping wing level will settle needing just little down elevator breezy keep nose down until foot ground Go neutral little up will slide right After becoming acquainted ship slightly rearward CG position will flatten glide somewhat try out dif ferent props MFG O NISTARIIR $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERINGI TORK-STARTER revolutionary concept power 1 5V glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting supplies power doing comes new CIlO charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handling TORK-STARTER $2995 Charger ltlOV220V 12V Fast Char gerl 92095 Without Charger CHARGERS $1295 Charger Only Ii tOy 220V 12V Fast Chargerl 13011464-2260 12721 HASKELL LANE BOWIE MARYLAND 20716 130 Model Aviation Fun/Winter Continued page 127 Continued page 132 55PWtfl TARLOISa-fl Ar-a EX*524 RR OR-ISt Na CORSAIRSA cURnISS -raeSn S BRARCArSW Fiberglass cowling & canoties avallaale aena mr detailed grechures Giant scale Acce Oar Plans ara sect Post-Paid Aithin USA Nick Ziroli 29 Edger Dries 5eiihfee NY 11757 USA