ONE OF THE things modelers have al ways dreamed big beautiful scale model Picture example onethird life-size Stearman sailing overhead Sunlight sparkles off huge wings steadily spinning prop big biplane pulls up gracefully completes loop rolls majestically dream longer day big model has fi nally arrived always few people felt achieve dreams cost Bill Bertrand often heard comments -scale Fokker D-VII flights highlights Nats Ed Morgan Las Vegas flying nine-foot J-3 Cub engine made out two McCoy 60s us thought plane Torpedo 45 monster Everyone enthralled big birds far out reach average modeler machine work modify engines insurmountable task designing own airplane anything go structural tech nique flight dynamic requirements usable materials mention poor reliabil ity radios time too much supermen changed now Nine-foot J-3s Champs Citabrias becoming almost commonplace far-out designs popping up over catalyst explosion arrival mar ket really big bolt-in engines re quire no work other model engine get run have lifting power Atlas biggest problem has always lack power Regardless what some people have preached nine-foot airplane 60 power does have gener ally acceptable performance can done isnt good enough day fun big OS 80 struggled As big Ed Morgans Custom van Tom Bunkers huge Learliner displayed Morgan Pat Bunker powered two pusher 60s rear nacelles About make some adjustments big white jet Tom Bunker seems praying Manitou 8 Model Aviation Floppy-hatted Bob Haight expert pilot Pfalz Bob Mickelsen WW-l fighter powered convered Cox chain-saw engine Right told Dicture Pfalz real thing Western Front wed bet youd buy it isnt birds about two years ago things started fall place Radios developed point no longer limiting factor Really good builders pilots becoming bored same old sized models everyone has building years Competition de veloped point superdedicated bad chance winning People started remembering spar kling daydreams asking themselves scene appeared Ron Shettler quietly saying marketing 20 cid converted chain-saw engine especially adapted model use called Quadra say Ron vision ary would have stretched point Everyone sneered idea men tioned said Yeah Suurre few people tried Quadra liked big-airplane movement got off ground Manufacturers actually started making products intended mon sters Suddenly Quarter-Scale bigEd Morgan readies Mooney Mite its fateful last flight much time expense invested monster big-model pilot becomes orderly well-disciplined operator Right Size makes detailing easier Mites cockpit complete keys ignition Lee Taylors Quadra engine completely fills firewall Nosen Champion its sound life-like Although big powerful Quadra economical its gas-and-oil mixture ger arrived New very good engines made appearance real announcement birth Quarter-Scale came last year Las Vegas Eddie Morgan brought dream lifetime fruition first-annual Quarter-Scale National FlyIn little advertising 32 monster models over 100 modelers showed up form Quarter-Scale Association America later Most appealing diversity en gines becoming available range way some newer little 60s earning reputa tion being excellent luggers lighter biggies up through 80s 90s 1 4s 15s finally Shettlers big 20 cid Quadra course exactly cheap Prices start $50 uncon verted industrial engine go rapidly up Most follow standard glow engine concept some converted indus trial engines some like Quadra retain ignition such industrial en gines Several manufacturers have come out reduction drives allow standard proven 60s swing much bigger prop Large propellers available quite reasonable prices Wheels hardware new accessory products showing up fast hard keep up just exactly what avail able general monster scale has arrived course being new baby man about become firsttime parent faced whole new set bewildering problems techniques has learned past need modified gotten new ones learned What ma terials use What strong enough Can find cheaper way ing What engine will work best model want God turkey going weigh 25 pounds Once serious work begins almost unanimous reaction panicky call help no way per son can take upon himself answer questions everyone has concerning models size will attempt de scribe what think good way go see two major problems almost has faced starting big birds First course what will work building Second very important pilot ability big birds fly very very well also fly quite differently regular models little thought practice beforehand will save some anxious moments air can stand waiting just little before starting big bird have method will save some grief long run Buy Sig J-3 Cub kitthe long-wing original Hazels clippedwing build Mentally make ninefooter out take time study construction go think vari ous ways might change things strengthen Think 10 Model Aviation Paul Sims beautiful modified Nosen Champion powered K&B 61 pumper essen tial consideration projecting biggie landing gear really absorb heavy impacts Little Chrissy Calmy proud grandaddys Fleet biplaneas no doubt Stan Design executed feeling shows through Wonder Chrissy will remember Frank Comys Fokker Eindecker feaiurs mu triai engine cable-actuated wing warping aileron control swiveling pilots head would like rig wires terms thin plywood instead balsa Cub designed years ago Its construction very similar what used biggies can visual ize problem areas might crop up later biggie example look closely kit analyze might see corner longerons balsa ex posed bumps bangs Wouldnt better made small hardwood dowel might break easily what about wing strut attachment Sure good enough plane flew virtually free flight 09 will stand up stresses modern-day engine pulling through snap rolls spins cabin structure looks flimsy windows make very little structure hold wing fuselage Dowels spliced window posts running way up wing root area down fuselage tie everything together will add immeasurably strength tubing structure windshield can made out wire running down deep corners help tie front cabin together helping lot struc tural rigidity forward section quick reminder As ing experimental building little J-3 sure mentally blow up monster size Get used thinking about what kind forces strengths shortly will dealing Remember will no longer dealing just fairly moderate forces engines will use put out fearsome power big heavy get much metal charging up down cylinder swinging 16 18 20 props vibra tions stresses no longer something simple balsawood model cement can handle have start thinking about structure can designed help out once arent going worrying much about weight least nose Cover model silk doublecovered Silkspan Get used idea building covering model again rather just wrapping up like pack age plastic wrap bigger birds little J-3 also designed covering mind add structural strength rigidity plastic films use big gie going lose great deal strength designed model As doing covering paint ing aware what doing point can really pile pounds become sloppy point get good finish hare minimum number coats Start structure very well finished bumps dents will need fill later lead putty Put covering smoothly evenly taking time pull out wrinkles smooth out seams little extra time will save hours sanding filling importantly pounds weight What brush stroke Cub model will bottle paint biggie Practice doing things right first time dont have worry about repairing goofs later Plan powering plane good 19 25 1 can recommend either OS 25 Fox 25 use power you will negate training aspects bird Use full 4-channel radio normal controls Stick parachute drop fun Now comes fun part some hardest work must learn fly beast Remember stick controls rudder Yeah use steering ground have always forgotten about once air now cannot forget about air going become just important elevator important ailerons Yep will have learn fly both sticks time built little J-3 excellent trainer purpose Continued page 82 July1978 11 say bgplane bug bit Tom Bunker putting mildly camera just caught him magic moment releases Nosen Citabria hand fin line up Las Vegas WW-1 squadron R Bob Haight Pfalz Tom Mahon Fokker D-VII Ernie Muller D-V II Frank Comyn Eindecker size flying site worth noting ambroid Dont give good old days model buildingI like whats around today Dick Henderson Phoenix AZ Thinking Big/Taylor continued page 71 bird flies rather poorly dont properly will start learn about taildraggers nice gentle landings Any other kind will get much trouble little bird muffed landing will bruise ego assum ing did beefing up talked about earlier biggies 15-30 pounds crashing ground will bend something major blow land ing something minor noseup becomes catastrophe biggie big props cost minimum $4 friend wiped out $36 worth props making two flights Ill tell little secret have used several years will learn wheel-land 1-3 will use knowledge biggies landings will much less sweaty proposition use standard full-stall touch-down Reason full-stall land ing control lost moment stall hopefully exact same instant wheels hit ground timing doesnt happen rare does left bird ticklish atti tude out control no airspeed really super pilot can sometimes recover situation Mostly poor plane its own flop down way can will wheel-land bird plane literally flown down ground Air speed maintained way through touch-down through initial part roll-out Therefore should things get out whack last second still have some airspeed bank can use speed give ex tra edge get out trouble Im say ing now can get out situa tion still have have cool head least have little something ex tra work secret good wheel landing little extra airspeed Carry airspeed right down flare instead try ing hold plane off concentrate getting level attitude just about inch off ground other words stead flaring just break glide ground level Now comes scary part need skill plane one-inch altitude level attitude tap about quarter-inch down ele vator hold until plane loses fly ing speed everything works out right plane will just gently tap its wheels down down elevator will glue onto runway As speed drops off come back easily full up elevator avoid nosing over Practice maneuver over over Cub skills developed will stand good stead rest flying career Fail people get serious taildrag gers especially biggies will spend time repairing flying fullstall landing airplane killer Thats full-scale flying perfect threepoint landing considered beautiful darned hard wheel landing much safer tail-high rollout thing turns crowds OK youve built little learning about basic techniques type model Youve mentally prepared self engineering beef required powerful biggie flying beautiful time show up field buddies put away planes shame youre hot trot What going build Im afraid tlat have turn loose So far just arent kits available few plans very few actually designed kind power will using As matter fact three sets plans currently available specifically de signed big engines know Andy Shebers Pitts Special Kraft Super-Fli plans available both A-scale Jim Follines Y4-scale Quadra-designed PT-19 Jims plans available Andys address end article kits plans way Im sure Im going taken task time printed right now products specific new powerplants have seen almost Nosen kits am flying heavily-modified Nosen Champ very good starting points anyone However advised Buds kits designed fly maximum 80 engine doesnt put out power good Schnuerle 60 consequently very light construction kind power now norm fly very well good basic kits require considerable beefing-up some outright redesign big engines Since almost everyone starts Buds kits will go out limb men tion some things have done flying models bigger powerplants First off Nosen planes have wing struts design inadequate big engines just about single important change can make struts virtually take full load airplane Redesign mind Metal fittings strut end bolted strong metal tach points both wing fuselage way go struts have metal cable shackle ends tied together c wire running length struts little overkill have no compunction about snap-rolling spinning 18-lb bird Second would well advised re place fuselage longerons /4 hardwood dowel balsawood structure just wont take banging heavier birds invariably get repairing major project nose area isnt too bad still needs can stiffen up Look over carefully wood supplied section replace soft pieces wood good hard density bird covered inside out layer 8-oz fiberglass back rear landing gear outside Since cut out door make operational stiffened cabin area replace strength lost mod biggest things did imbed 1/8 wire door win dow posts make forward pipe structure windshild brass tub ing wire splice pieces soldered joints ends tied heavily structure latter mod alone greatly stiffened up nose-cabin-wing area landing gear has have some pro vision flexing As designed almost totally rigid Since gear cant flex hard landing will bend something wheels alone arent sufficient ab sorb shock something havent fully cured yet several solutions work still ultimate have leave just make some modification have some flex gear dont like acetate windows trip local plastics store Taps Plastics will net l/l6 plexiglass Careful cutting RC-56 glue will get some very nice windows scale thickness pick up some very thick acetate butyrate sheet 040 thereabouts front windshield Use RC-56 glue also Now engine choice area can really cause howls cause isnt anyone know really has broad experience have Quadra access 15 cid Moki have seen DuBro belt drive run plane Therefore advised what am about say open controversy have modeling business 82 Model Aviation prnlrn INDUSTRIES INC 7060 HOIIywc.. .,. .. te think ideas valid general two types en gines available today glow engines follow standard modeling layout converted industrial en gines Im going out limb make two statements First glow engines follow stand ard model design much different engines have grown know love just bigger what have seen very power ful swing big props scream best suited smaller biggies ones modern faster planes no reason can used older bigger planes dont match character planes very light biggies such Nosen J-3 Champ will satisfactory smaller glow engines such Webra 90 reduction drive units several Really good 60s give solid extremely scale-like performance planes keeping mind real planes en gines also howled out guts fly Most people will opt something provides little extra spare bigger glow engines usable lighter biggies home something like Nosen Citabria Pitts would very interested see would perform something like Nosens new Mustang kind plane performance designed howling high speed secondly come pkce de resistance Quadra class big hulking monster prop-swingers Quadra can used virtually air plane home plane matches its own bulk such Nosen Mr Mulligan 1/3rd Pitts impressive sights have seen Jim Jacobsons 23-lb Mr Mulligan taking off its maiden flight big Quadra growling away up front airplane rolled about 75 feet pointed its snout up about 300 angle just scratched clawed its way growling sky wasnt real speed just awe some feeling power closest com parison can make 3000-hp Bearcat snarling away Reno runway kind bird Quadra born sounds good have Quadra Champ flies plane very well However en gine completely fills firewall cowling slightly oversize scale engines would better match just dont have class engines havent mentioned new multi-cylinder engines have seen Hargrave Radials offered Model Builder magazine have seen multi-cylinder engines run Opinion dont think engines going adaptable size models total displacement huge shudder think sticking $1000 front airplane Hargrave way gorgeous piece work Now Im going talk briefly about something has become near dear Quarter-Scale Asso ciation America group formed first Las Vegas National Fly-In last October devoted building flying Quarter-Scale very large models believe huge model built unique special unto itself therefore competition between would sacrilege Competition automatically implies rules rules restrictive dont want restrictions what beasts Basically bunch rugged individualists wish build what want want to get together others share joy achievements pick others brains dont want efforts mally judged because us winner minds primary purpose provide rallying point anyone interested can get information share has want get together fly-ins QS picnics barbeques have blast biggies enjoy company July1978 83 WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities R/C construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH US. SUBSCRIBE NOW AND GET 3 FREE ISSUES Fill out send coupon check Money Order year subscription $1600 will re ceive 3 additional FREE ISSUES total savings $750 Mail MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v33][b116127901210930]] REGULAR SUBSCRIPTION IS Name __________________________________________ $1500 SUBSCRIBE NOW AND Address ____________________________________________ SAVE $750! RECEIVE 15 ISSUESATONE-THIRDOFF! City __________________State ________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount other guys like us newsletter being published rapidly growing mini-magazine concentrates type information darned hard come interested QSAA send double-stamped large self-addressed envelope Ill send copy first newsletter Remember Big Beautiful QSAA motto SOME SUPPLY SOURCES Kits 3-3 Champ Citabria Mr Mulligan several others Bud Nosen Models PO Bos 105 Two Harbors MN 55616 Several WWl types Aerotec Model Engineering Co Box 116 Lincoindale NY 10540 Engines Quadra 20 cid converted chain-sass engine ignition Most hobby sbops can order Fine Star Specialties 3125 wilkins way Carmichael CA 95608 EWH Specialties Inc. 607 E Abrams Suite 410 Arlington TX 76010 MRCSuevia 25cc 15 cid glo Schenerle ported Most bobby shops can order MRC 2500 woodbridge Ave. Edison NJ 08817 MOKI 25cc glow Most hobby shops can order imported Polks Hobbies Five Star Specialties Isee address above Webra 90 05 80 Fox 78 Pro6 76 order through hobby sbops Plans parts Specifically designed large engines -also parts accessories Quadra engines accessories 1/3rd Pitts & Kraft Super-Fli Big Arts Models 20620 Emmett Taylor MI 48180 33 Cuh 90 PBY Stinson Vovoger others Sid Morgau Plans 13157 Ormond Belleville MI 48111 Fairchild PT19 spec6cally Quadra Jim Folline Lee Taylor 329 C St Roseville CA 95678 Curtiss Hawk PhE Stinsor Reliant 5R9 Barronss Scale Classics 1213 Holly Spring Lane Grand Blanc MI 48439 Bob Holmar Plans PO Box 714S San Bernardino C 2 Old Time Plan Sers Jobe Pond PO Bus 3113 San Jose CA 9556 Lee Taylor 329 C St Roseville CA 95678 RC Technique/Myers continued page 13 can operated position Jerry Jarvis MEN has hint car boat helicopter drivers re gard limiting maximum current drawn Add flywheel starter spin up starter before engaging belt flywheel will store up some energy will give internal combustion motor just time peak energy demand takes some strain off battery gives stronger starting jolt Storage Gel cells store well Ive telling recharge nickle-cad mium batteries once month whether use Vince Calouri Boe ing Hawks told just last month talk given Hawks Boeing bat tery expert name carelessly got write down rate mes sage Put little load battery just before recharge optimum results Exercising RC system few minutes will sufficient re charge Now back gel cells Stored room temperature fully charged gel cell will drop half its capacity about nine months Thats pretty good So recharge stored gel cells twice year whether use Failure keep fully charged leads sulfation plates permanently reduces battery capacity Connectors If gel cell has tabs like some Astro Flight batteries Fig Radio Shack has push-on connector can installed wire just pair pliers Id give part number change too fast just look around among blister packs ask help Molex con nectors can sometimes found auto parts stores Fig 6 shows another alterna tive Concepts Unlimited 36C Carlough Place Bohemia NY 11716 distributing Anderson Power Products kit shown connectors mate Gelyte battery distributed CU UL Canadian standard certified contacts wipe together recommen ded both battery manufacturers shells color coded keyed sides can assemble just about kind special plug might want Use substitutes wire nuts installing electrical fixtures local wiring code permits simplify job lot No holding up fixture hand try turn wire nut other also work well making connections car like CB cuss cuss stereo See dealer first What else can tell about gel cells Keep cool operate range 40nF 140F trunk car gets up l40F hot sun temperature hastens self-discharge kinds batteries Gel cells rated 20-hour rate reason yield greatest ca pacity rate starter motor draws lot short time dont worry about Charge gel cell soon get because theres no way knowing left factory fully charged stored interim Capacity will crease during first few charge/dis charge cycles gel cell considered expended its available capacity measured 20-hour rate C/20 ps 6-amp-hour pack drops half its original value George M Myers 70 Froehlich Farm Rd Hicks yule NY 1180] Agrivation/Haught continued page 18 thoroughly Fit center ribs cutting out sec tions needed Install leading edge sheet ing center-section planking Shape sheet wing tips shown typical sec tion Cap tops ribs 2 strips Sand wing structure rounding lead ing trailing edge members final shape Cut ailerons trailing edge stock sand shape Install 3/32 wire horns Klett AB-4 bearings hinge wing Horns should bent forward shown insure up aileron travel down necessary insure smooth entry turns high lifting airfoil Fabricate plywood servo doubler fit servo used install shown Cut out planking accommodate servo Standard Du-Bro aileron linkage recom mended completes basic structure Give components final sanding proceed favorite covering finishing procedure iron-on coverings satis factory prefer traditional methods suggest fabric wings either ironed-on Coverite doped-on silk Silron doped-on Silkspan over bare wood parts Silkspan easily applied 75% thinner-25% dope mixture brushed through paper after preparing wood application two coats clear dope 84 Model Aviation 4 NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM ~LYLINE utlsi,tOnp,hO upRa,au,nAiid 2345RPRAdRI , EXiRla i,,,5 Run n2X p.$1295 XuXflb. PXR, Sig StO IXAL XiApe9 flIZhi XR5A P,r,XX Send 254 catalog See dealer oIl FLYLINEa cloaaic kita NOW FLYLINE MODELS INC 031 5734335 HEINKEL 1000 ninsata RAXR * flX3 RfRXR, XAA, PAR Rlii33XSIXOiPRX2X P32 Flu, PAhiin 12
Edition: Model Aviation - 1978/07
Page Numbers: 8, 9, 10, 11, 82, 83, 84
ONE OF THE things modelers have al ways dreamed big beautiful scale model Picture example onethird life-size Stearman sailing overhead Sunlight sparkles off huge wings steadily spinning prop big biplane pulls up gracefully completes loop rolls majestically dream longer day big model has fi nally arrived always few people felt achieve dreams cost Bill Bertrand often heard comments -scale Fokker D-VII flights highlights Nats Ed Morgan Las Vegas flying nine-foot J-3 Cub engine made out two McCoy 60s us thought plane Torpedo 45 monster Everyone enthralled big birds far out reach average modeler machine work modify engines insurmountable task designing own airplane anything go structural tech nique flight dynamic requirements usable materials mention poor reliabil ity radios time too much supermen changed now Nine-foot J-3s Champs Citabrias becoming almost commonplace far-out designs popping up over catalyst explosion arrival mar ket really big bolt-in engines re quire no work other model engine get run have lifting power Atlas biggest problem has always lack power Regardless what some people have preached nine-foot airplane 60 power does have gener ally acceptable performance can done isnt good enough day fun big OS 80 struggled As big Ed Morgans Custom van Tom Bunkers huge Learliner displayed Morgan Pat Bunker powered two pusher 60s rear nacelles About make some adjustments big white jet Tom Bunker seems praying Manitou 8 Model Aviation Floppy-hatted Bob Haight expert pilot Pfalz Bob Mickelsen WW-l fighter powered convered Cox chain-saw engine Right told Dicture Pfalz real thing Western Front wed bet youd buy it isnt birds about two years ago things started fall place Radios developed point no longer limiting factor Really good builders pilots becoming bored same old sized models everyone has building years Competition de veloped point superdedicated bad chance winning People started remembering spar kling daydreams asking themselves scene appeared Ron Shettler quietly saying marketing 20 cid converted chain-saw engine especially adapted model use called Quadra say Ron vision ary would have stretched point Everyone sneered idea men tioned said Yeah Suurre few people tried Quadra liked big-airplane movement got off ground Manufacturers actually started making products intended mon sters Suddenly Quarter-Scale bigEd Morgan readies Mooney Mite its fateful last flight much time expense invested monster big-model pilot becomes orderly well-disciplined operator Right Size makes detailing easier Mites cockpit complete keys ignition Lee Taylors Quadra engine completely fills firewall Nosen Champion its sound life-like Although big powerful Quadra economical its gas-and-oil mixture ger arrived New very good engines made appearance real announcement birth Quarter-Scale came last year Las Vegas Eddie Morgan brought dream lifetime fruition first-annual Quarter-Scale National FlyIn little advertising 32 monster models over 100 modelers showed up form Quarter-Scale Association America later Most appealing diversity en gines becoming available range way some newer little 60s earning reputa tion being excellent luggers lighter biggies up through 80s 90s 1 4s 15s finally Shettlers big 20 cid Quadra course exactly cheap Prices start $50 uncon verted industrial engine go rapidly up Most follow standard glow engine concept some converted indus trial engines some like Quadra retain ignition such industrial en gines Several manufacturers have come out reduction drives allow standard proven 60s swing much bigger prop Large propellers available quite reasonable prices Wheels hardware new accessory products showing up fast hard keep up just exactly what avail able general monster scale has arrived course being new baby man about become firsttime parent faced whole new set bewildering problems techniques has learned past need modified gotten new ones learned What ma terials use What strong enough Can find cheaper way ing What engine will work best model want God turkey going weigh 25 pounds Once serious work begins almost unanimous reaction panicky call help no way per son can take upon himself answer questions everyone has concerning models size will attempt de scribe what think good way go see two major problems almost has faced starting big birds First course what will work building Second very important pilot ability big birds fly very very well also fly quite differently regular models little thought practice beforehand will save some anxious moments air can stand waiting just little before starting big bird have method will save some grief long run Buy Sig J-3 Cub kitthe long-wing original Hazels clippedwing build Mentally make ninefooter out take time study construction go think vari ous ways might change things strengthen Think 10 Model Aviation Paul Sims beautiful modified Nosen Champion powered K&B 61 pumper essen tial consideration projecting biggie landing gear really absorb heavy impacts Little Chrissy Calmy proud grandaddys Fleet biplaneas no doubt Stan Design executed feeling shows through Wonder Chrissy will remember Frank Comys Fokker Eindecker feaiurs mu triai engine cable-actuated wing warping aileron control swiveling pilots head would like rig wires terms thin plywood instead balsa Cub designed years ago Its construction very similar what used biggies can visual ize problem areas might crop up later biggie example look closely kit analyze might see corner longerons balsa ex posed bumps bangs Wouldnt better made small hardwood dowel might break easily what about wing strut attachment Sure good enough plane flew virtually free flight 09 will stand up stresses modern-day engine pulling through snap rolls spins cabin structure looks flimsy windows make very little structure hold wing fuselage Dowels spliced window posts running way up wing root area down fuselage tie everything together will add immeasurably strength tubing structure windshield can made out wire running down deep corners help tie front cabin together helping lot struc tural rigidity forward section quick reminder As ing experimental building little J-3 sure mentally blow up monster size Get used thinking about what kind forces strengths shortly will dealing Remember will no longer dealing just fairly moderate forces engines will use put out fearsome power big heavy get much metal charging up down cylinder swinging 16 18 20 props vibra tions stresses no longer something simple balsawood model cement can handle have start thinking about structure can designed help out once arent going worrying much about weight least nose Cover model silk doublecovered Silkspan Get used idea building covering model again rather just wrapping up like pack age plastic wrap bigger birds little J-3 also designed covering mind add structural strength rigidity plastic films use big gie going lose great deal strength designed model As doing covering paint ing aware what doing point can really pile pounds become sloppy point get good finish hare minimum number coats Start structure very well finished bumps dents will need fill later lead putty Put covering smoothly evenly taking time pull out wrinkles smooth out seams little extra time will save hours sanding filling importantly pounds weight What brush stroke Cub model will bottle paint biggie Practice doing things right first time dont have worry about repairing goofs later Plan powering plane good 19 25 1 can recommend either OS 25 Fox 25 use power you will negate training aspects bird Use full 4-channel radio normal controls Stick parachute drop fun Now comes fun part some hardest work must learn fly beast Remember stick controls rudder Yeah use steering ground have always forgotten about once air now cannot forget about air going become just important elevator important ailerons Yep will have learn fly both sticks time built little J-3 excellent trainer purpose Continued page 82 July1978 11 say bgplane bug bit Tom Bunker putting mildly camera just caught him magic moment releases Nosen Citabria hand fin line up Las Vegas WW-1 squadron R Bob Haight Pfalz Tom Mahon Fokker D-VII Ernie Muller D-V II Frank Comyn Eindecker size flying site worth noting ambroid Dont give good old days model buildingI like whats around today Dick Henderson Phoenix AZ Thinking Big/Taylor continued page 71 bird flies rather poorly dont properly will start learn about taildraggers nice gentle landings Any other kind will get much trouble little bird muffed landing will bruise ego assum ing did beefing up talked about earlier biggies 15-30 pounds crashing ground will bend something major blow land ing something minor noseup becomes catastrophe biggie big props cost minimum $4 friend wiped out $36 worth props making two flights Ill tell little secret have used several years will learn wheel-land 1-3 will use knowledge biggies landings will much less sweaty proposition use standard full-stall touch-down Reason full-stall land ing control lost moment stall hopefully exact same instant wheels hit ground timing doesnt happen rare does left bird ticklish atti tude out control no airspeed really super pilot can sometimes recover situation Mostly poor plane its own flop down way can will wheel-land bird plane literally flown down ground Air speed maintained way through touch-down through initial part roll-out Therefore should things get out whack last second still have some airspeed bank can use speed give ex tra edge get out trouble Im say ing now can get out situa tion still have have cool head least have little something ex tra work secret good wheel landing little extra airspeed Carry airspeed right down flare instead try ing hold plane off concentrate getting level attitude just about inch off ground other words stead flaring just break glide ground level Now comes scary part need skill plane one-inch altitude level attitude tap about quarter-inch down ele vator hold until plane loses fly ing speed everything works out right plane will just gently tap its wheels down down elevator will glue onto runway As speed drops off come back easily full up elevator avoid nosing over Practice maneuver over over Cub skills developed will stand good stead rest flying career Fail people get serious taildrag gers especially biggies will spend time repairing flying fullstall landing airplane killer Thats full-scale flying perfect threepoint landing considered beautiful darned hard wheel landing much safer tail-high rollout thing turns crowds OK youve built little learning about basic techniques type model Youve mentally prepared self engineering beef required powerful biggie flying beautiful time show up field buddies put away planes shame youre hot trot What going build Im afraid tlat have turn loose So far just arent kits available few plans very few actually designed kind power will using As matter fact three sets plans currently available specifically de signed big engines know Andy Shebers Pitts Special Kraft Super-Fli plans available both A-scale Jim Follines Y4-scale Quadra-designed PT-19 Jims plans available Andys address end article kits plans way Im sure Im going taken task time printed right now products specific new powerplants have seen almost Nosen kits am flying heavily-modified Nosen Champ very good starting points anyone However advised Buds kits designed fly maximum 80 engine doesnt put out power good Schnuerle 60 consequently very light construction kind power now norm fly very well good basic kits require considerable beefing-up some outright redesign big engines Since almost everyone starts Buds kits will go out limb men tion some things have done flying models bigger powerplants First off Nosen planes have wing struts design inadequate big engines just about single important change can make struts virtually take full load airplane Redesign mind Metal fittings strut end bolted strong metal tach points both wing fuselage way go struts have metal cable shackle ends tied together c wire running length struts little overkill have no compunction about snap-rolling spinning 18-lb bird Second would well advised re place fuselage longerons /4 hardwood dowel balsawood structure just wont take banging heavier birds invariably get repairing major project nose area isnt too bad still needs can stiffen up Look over carefully wood supplied section replace soft pieces wood good hard density bird covered inside out layer 8-oz fiberglass back rear landing gear outside Since cut out door make operational stiffened cabin area replace strength lost mod biggest things did imbed 1/8 wire door win dow posts make forward pipe structure windshild brass tub ing wire splice pieces soldered joints ends tied heavily structure latter mod alone greatly stiffened up nose-cabin-wing area landing gear has have some pro vision flexing As designed almost totally rigid Since gear cant flex hard landing will bend something wheels alone arent sufficient ab sorb shock something havent fully cured yet several solutions work still ultimate have leave just make some modification have some flex gear dont like acetate windows trip local plastics store Taps Plastics will net l/l6 plexiglass Careful cutting RC-56 glue will get some very nice windows scale thickness pick up some very thick acetate butyrate sheet 040 thereabouts front windshield Use RC-56 glue also Now engine choice area can really cause howls cause isnt anyone know really has broad experience have Quadra access 15 cid Moki have seen DuBro belt drive run plane Therefore advised what am about say open controversy have modeling business 82 Model Aviation prnlrn INDUSTRIES INC 7060 HOIIywc.. .,. .. te think ideas valid general two types en gines available today glow engines follow standard modeling layout converted industrial en gines Im going out limb make two statements First glow engines follow stand ard model design much different engines have grown know love just bigger what have seen very power ful swing big props scream best suited smaller biggies ones modern faster planes no reason can used older bigger planes dont match character planes very light biggies such Nosen J-3 Champ will satisfactory smaller glow engines such Webra 90 reduction drive units several Really good 60s give solid extremely scale-like performance planes keeping mind real planes en gines also howled out guts fly Most people will opt something provides little extra spare bigger glow engines usable lighter biggies home something like Nosen Citabria Pitts would very interested see would perform something like Nosens new Mustang kind plane performance designed howling high speed secondly come pkce de resistance Quadra class big hulking monster prop-swingers Quadra can used virtually air plane home plane matches its own bulk such Nosen Mr Mulligan 1/3rd Pitts impressive sights have seen Jim Jacobsons 23-lb Mr Mulligan taking off its maiden flight big Quadra growling away up front airplane rolled about 75 feet pointed its snout up about 300 angle just scratched clawed its way growling sky wasnt real speed just awe some feeling power closest com parison can make 3000-hp Bearcat snarling away Reno runway kind bird Quadra born sounds good have Quadra Champ flies plane very well However en gine completely fills firewall cowling slightly oversize scale engines would better match just dont have class engines havent mentioned new multi-cylinder engines have seen Hargrave Radials offered Model Builder magazine have seen multi-cylinder engines run Opinion dont think engines going adaptable size models total displacement huge shudder think sticking $1000 front airplane Hargrave way gorgeous piece work Now Im going talk briefly about something has become near dear Quarter-Scale Asso ciation America group formed first Las Vegas National Fly-In last October devoted building flying Quarter-Scale very large models believe huge model built unique special unto itself therefore competition between would sacrilege Competition automatically implies rules rules restrictive dont want restrictions what beasts Basically bunch rugged individualists wish build what want want to get together others share joy achievements pick others brains dont want efforts mally judged because us winner minds primary purpose provide rallying point anyone interested can get information share has want get together fly-ins QS picnics barbeques have blast biggies enjoy company July1978 83 WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities R/C construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH US. SUBSCRIBE NOW AND GET 3 FREE ISSUES Fill out send coupon check Money Order year subscription $1600 will re ceive 3 additional FREE ISSUES total savings $750 Mail MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v33][b116127901210930]] REGULAR SUBSCRIPTION IS Name __________________________________________ $1500 SUBSCRIBE NOW AND Address ____________________________________________ SAVE $750! RECEIVE 15 ISSUESATONE-THIRDOFF! City __________________State ________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount other guys like us newsletter being published rapidly growing mini-magazine concentrates type information darned hard come interested QSAA send double-stamped large self-addressed envelope Ill send copy first newsletter Remember Big Beautiful QSAA motto SOME SUPPLY SOURCES Kits 3-3 Champ Citabria Mr Mulligan several others Bud Nosen Models PO Bos 105 Two Harbors MN 55616 Several WWl types Aerotec Model Engineering Co Box 116 Lincoindale NY 10540 Engines Quadra 20 cid converted chain-sass engine ignition Most hobby sbops can order Fine Star Specialties 3125 wilkins way Carmichael CA 95608 EWH Specialties Inc. 607 E Abrams Suite 410 Arlington TX 76010 MRCSuevia 25cc 15 cid glo Schenerle ported Most bobby shops can order MRC 2500 woodbridge Ave. Edison NJ 08817 MOKI 25cc glow Most hobby shops can order imported Polks Hobbies Five Star Specialties Isee address above Webra 90 05 80 Fox 78 Pro6 76 order through hobby sbops Plans parts Specifically designed large engines -also parts accessories Quadra engines accessories 1/3rd Pitts & Kraft Super-Fli Big Arts Models 20620 Emmett Taylor MI 48180 33 Cuh 90 PBY Stinson Vovoger others Sid Morgau Plans 13157 Ormond Belleville MI 48111 Fairchild PT19 spec6cally Quadra Jim Folline Lee Taylor 329 C St Roseville CA 95678 Curtiss Hawk PhE Stinsor Reliant 5R9 Barronss Scale Classics 1213 Holly Spring Lane Grand Blanc MI 48439 Bob Holmar Plans PO Box 714S San Bernardino C 2 Old Time Plan Sers Jobe Pond PO Bus 3113 San Jose CA 9556 Lee Taylor 329 C St Roseville CA 95678 RC Technique/Myers continued page 13 can operated position Jerry Jarvis MEN has hint car boat helicopter drivers re gard limiting maximum current drawn Add flywheel starter spin up starter before engaging belt flywheel will store up some energy will give internal combustion motor just time peak energy demand takes some strain off battery gives stronger starting jolt Storage Gel cells store well Ive telling recharge nickle-cad mium batteries once month whether use Vince Calouri Boe ing Hawks told just last month talk given Hawks Boeing bat tery expert name carelessly got write down rate mes sage Put little load battery just before recharge optimum results Exercising RC system few minutes will sufficient re charge Now back gel cells Stored room temperature fully charged gel cell will drop half its capacity about nine months Thats pretty good So recharge stored gel cells twice year whether use Failure keep fully charged leads sulfation plates permanently reduces battery capacity Connectors If gel cell has tabs like some Astro Flight batteries Fig Radio Shack has push-on connector can installed wire just pair pliers Id give part number change too fast just look around among blister packs ask help Molex con nectors can sometimes found auto parts stores Fig 6 shows another alterna tive Concepts Unlimited 36C Carlough Place Bohemia NY 11716 distributing Anderson Power Products kit shown connectors mate Gelyte battery distributed CU UL Canadian standard certified contacts wipe together recommen ded both battery manufacturers shells color coded keyed sides can assemble just about kind special plug might want Use substitutes wire nuts installing electrical fixtures local wiring code permits simplify job lot No holding up fixture hand try turn wire nut other also work well making connections car like CB cuss cuss stereo See dealer first What else can tell about gel cells Keep cool operate range 40nF 140F trunk car gets up l40F hot sun temperature hastens self-discharge kinds batteries Gel cells rated 20-hour rate reason yield greatest ca pacity rate starter motor draws lot short time dont worry about Charge gel cell soon get because theres no way knowing left factory fully charged stored interim Capacity will crease during first few charge/dis charge cycles gel cell considered expended its available capacity measured 20-hour rate C/20 ps 6-amp-hour pack drops half its original value George M Myers 70 Froehlich Farm Rd Hicks yule NY 1180] Agrivation/Haught continued page 18 thoroughly Fit center ribs cutting out sec tions needed Install leading edge sheet ing center-section planking Shape sheet wing tips shown typical sec tion Cap tops ribs 2 strips Sand wing structure rounding lead ing trailing edge members final shape Cut ailerons trailing edge stock sand shape Install 3/32 wire horns Klett AB-4 bearings hinge wing Horns should bent forward shown insure up aileron travel down necessary insure smooth entry turns high lifting airfoil Fabricate plywood servo doubler fit servo used install shown Cut out planking accommodate servo Standard Du-Bro aileron linkage recom mended completes basic structure Give components final sanding proceed favorite covering finishing procedure iron-on coverings satis factory prefer traditional methods suggest fabric wings either ironed-on Coverite doped-on silk Silron doped-on Silkspan over bare wood parts Silkspan easily applied 75% thinner-25% dope mixture brushed through paper after preparing wood application two coats clear dope 84 Model Aviation 4 NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM ~LYLINE utlsi,tOnp,hO upRa,au,nAiid 2345RPRAdRI , EXiRla i,,,5 Run n2X p.$1295 XuXflb. PXR, Sig StO IXAL XiApe9 flIZhi XR5A P,r,XX Send 254 catalog See dealer oIl FLYLINEa cloaaic kita NOW FLYLINE MODELS INC 031 5734335 HEINKEL 1000 ninsata RAXR * flX3 RfRXR, XAA, PAR Rlii33XSIXOiPRX2X P32 Flu, PAhiin 12
Edition: Model Aviation - 1978/07
Page Numbers: 8, 9, 10, 11, 82, 83, 84
ONE OF THE things modelers have al ways dreamed big beautiful scale model Picture example onethird life-size Stearman sailing overhead Sunlight sparkles off huge wings steadily spinning prop big biplane pulls up gracefully completes loop rolls majestically dream longer day big model has fi nally arrived always few people felt achieve dreams cost Bill Bertrand often heard comments -scale Fokker D-VII flights highlights Nats Ed Morgan Las Vegas flying nine-foot J-3 Cub engine made out two McCoy 60s us thought plane Torpedo 45 monster Everyone enthralled big birds far out reach average modeler machine work modify engines insurmountable task designing own airplane anything go structural tech nique flight dynamic requirements usable materials mention poor reliabil ity radios time too much supermen changed now Nine-foot J-3s Champs Citabrias becoming almost commonplace far-out designs popping up over catalyst explosion arrival mar ket really big bolt-in engines re quire no work other model engine get run have lifting power Atlas biggest problem has always lack power Regardless what some people have preached nine-foot airplane 60 power does have gener ally acceptable performance can done isnt good enough day fun big OS 80 struggled As big Ed Morgans Custom van Tom Bunkers huge Learliner displayed Morgan Pat Bunker powered two pusher 60s rear nacelles About make some adjustments big white jet Tom Bunker seems praying Manitou 8 Model Aviation Floppy-hatted Bob Haight expert pilot Pfalz Bob Mickelsen WW-l fighter powered convered Cox chain-saw engine Right told Dicture Pfalz real thing Western Front wed bet youd buy it isnt birds about two years ago things started fall place Radios developed point no longer limiting factor Really good builders pilots becoming bored same old sized models everyone has building years Competition de veloped point superdedicated bad chance winning People started remembering spar kling daydreams asking themselves scene appeared Ron Shettler quietly saying marketing 20 cid converted chain-saw engine especially adapted model use called Quadra say Ron vision ary would have stretched point Everyone sneered idea men tioned said Yeah Suurre few people tried Quadra liked big-airplane movement got off ground Manufacturers actually started making products intended mon sters Suddenly Quarter-Scale bigEd Morgan readies Mooney Mite its fateful last flight much time expense invested monster big-model pilot becomes orderly well-disciplined operator Right Size makes detailing easier Mites cockpit complete keys ignition Lee Taylors Quadra engine completely fills firewall Nosen Champion its sound life-like Although big powerful Quadra economical its gas-and-oil mixture ger arrived New very good engines made appearance real announcement birth Quarter-Scale came last year Las Vegas Eddie Morgan brought dream lifetime fruition first-annual Quarter-Scale National FlyIn little advertising 32 monster models over 100 modelers showed up form Quarter-Scale Association America later Most appealing diversity en gines becoming available range way some newer little 60s earning reputa tion being excellent luggers lighter biggies up through 80s 90s 1 4s 15s finally Shettlers big 20 cid Quadra course exactly cheap Prices start $50 uncon verted industrial engine go rapidly up Most follow standard glow engine concept some converted indus trial engines some like Quadra retain ignition such industrial en gines Several manufacturers have come out reduction drives allow standard proven 60s swing much bigger prop Large propellers available quite reasonable prices Wheels hardware new accessory products showing up fast hard keep up just exactly what avail able general monster scale has arrived course being new baby man about become firsttime parent faced whole new set bewildering problems techniques has learned past need modified gotten new ones learned What ma terials use What strong enough Can find cheaper way ing What engine will work best model want God turkey going weigh 25 pounds Once serious work begins almost unanimous reaction panicky call help no way per son can take upon himself answer questions everyone has concerning models size will attempt de scribe what think good way go see two major problems almost has faced starting big birds First course what will work building Second very important pilot ability big birds fly very very well also fly quite differently regular models little thought practice beforehand will save some anxious moments air can stand waiting just little before starting big bird have method will save some grief long run Buy Sig J-3 Cub kitthe long-wing original Hazels clippedwing build Mentally make ninefooter out take time study construction go think vari ous ways might change things strengthen Think 10 Model Aviation Paul Sims beautiful modified Nosen Champion powered K&B 61 pumper essen tial consideration projecting biggie landing gear really absorb heavy impacts Little Chrissy Calmy proud grandaddys Fleet biplaneas no doubt Stan Design executed feeling shows through Wonder Chrissy will remember Frank Comys Fokker Eindecker feaiurs mu triai engine cable-actuated wing warping aileron control swiveling pilots head would like rig wires terms thin plywood instead balsa Cub designed years ago Its construction very similar what used biggies can visual ize problem areas might crop up later biggie example look closely kit analyze might see corner longerons balsa ex posed bumps bangs Wouldnt better made small hardwood dowel might break easily what about wing strut attachment Sure good enough plane flew virtually free flight 09 will stand up stresses modern-day engine pulling through snap rolls spins cabin structure looks flimsy windows make very little structure hold wing fuselage Dowels spliced window posts running way up wing root area down fuselage tie everything together will add immeasurably strength tubing structure windshield can made out wire running down deep corners help tie front cabin together helping lot struc tural rigidity forward section quick reminder As ing experimental building little J-3 sure mentally blow up monster size Get used thinking about what kind forces strengths shortly will dealing Remember will no longer dealing just fairly moderate forces engines will use put out fearsome power big heavy get much metal charging up down cylinder swinging 16 18 20 props vibra tions stresses no longer something simple balsawood model cement can handle have start thinking about structure can designed help out once arent going worrying much about weight least nose Cover model silk doublecovered Silkspan Get used idea building covering model again rather just wrapping up like pack age plastic wrap bigger birds little J-3 also designed covering mind add structural strength rigidity plastic films use big gie going lose great deal strength designed model As doing covering paint ing aware what doing point can really pile pounds become sloppy point get good finish hare minimum number coats Start structure very well finished bumps dents will need fill later lead putty Put covering smoothly evenly taking time pull out wrinkles smooth out seams little extra time will save hours sanding filling importantly pounds weight What brush stroke Cub model will bottle paint biggie Practice doing things right first time dont have worry about repairing goofs later Plan powering plane good 19 25 1 can recommend either OS 25 Fox 25 use power you will negate training aspects bird Use full 4-channel radio normal controls Stick parachute drop fun Now comes fun part some hardest work must learn fly beast Remember stick controls rudder Yeah use steering ground have always forgotten about once air now cannot forget about air going become just important elevator important ailerons Yep will have learn fly both sticks time built little J-3 excellent trainer purpose Continued page 82 July1978 11 say bgplane bug bit Tom Bunker putting mildly camera just caught him magic moment releases Nosen Citabria hand fin line up Las Vegas WW-1 squadron R Bob Haight Pfalz Tom Mahon Fokker D-VII Ernie Muller D-V II Frank Comyn Eindecker size flying site worth noting ambroid Dont give good old days model buildingI like whats around today Dick Henderson Phoenix AZ Thinking Big/Taylor continued page 71 bird flies rather poorly dont properly will start learn about taildraggers nice gentle landings Any other kind will get much trouble little bird muffed landing will bruise ego assum ing did beefing up talked about earlier biggies 15-30 pounds crashing ground will bend something major blow land ing something minor noseup becomes catastrophe biggie big props cost minimum $4 friend wiped out $36 worth props making two flights Ill tell little secret have used several years will learn wheel-land 1-3 will use knowledge biggies landings will much less sweaty proposition use standard full-stall touch-down Reason full-stall land ing control lost moment stall hopefully exact same instant wheels hit ground timing doesnt happen rare does left bird ticklish atti tude out control no airspeed really super pilot can sometimes recover situation Mostly poor plane its own flop down way can will wheel-land bird plane literally flown down ground Air speed maintained way through touch-down through initial part roll-out Therefore should things get out whack last second still have some airspeed bank can use speed give ex tra edge get out trouble Im say ing now can get out situa tion still have have cool head least have little something ex tra work secret good wheel landing little extra airspeed Carry airspeed right down flare instead try ing hold plane off concentrate getting level attitude just about inch off ground other words stead flaring just break glide ground level Now comes scary part need skill plane one-inch altitude level attitude tap about quarter-inch down ele vator hold until plane loses fly ing speed everything works out right plane will just gently tap its wheels down down elevator will glue onto runway As speed drops off come back easily full up elevator avoid nosing over Practice maneuver over over Cub skills developed will stand good stead rest flying career Fail people get serious taildrag gers especially biggies will spend time repairing flying fullstall landing airplane killer Thats full-scale flying perfect threepoint landing considered beautiful darned hard wheel landing much safer tail-high rollout thing turns crowds OK youve built little learning about basic techniques type model Youve mentally prepared self engineering beef required powerful biggie flying beautiful time show up field buddies put away planes shame youre hot trot What going build Im afraid tlat have turn loose So far just arent kits available few plans very few actually designed kind power will using As matter fact three sets plans currently available specifically de signed big engines know Andy Shebers Pitts Special Kraft Super-Fli plans available both A-scale Jim Follines Y4-scale Quadra-designed PT-19 Jims plans available Andys address end article kits plans way Im sure Im going taken task time printed right now products specific new powerplants have seen almost Nosen kits am flying heavily-modified Nosen Champ very good starting points anyone However advised Buds kits designed fly maximum 80 engine doesnt put out power good Schnuerle 60 consequently very light construction kind power now norm fly very well good basic kits require considerable beefing-up some outright redesign big engines Since almost everyone starts Buds kits will go out limb men tion some things have done flying models bigger powerplants First off Nosen planes have wing struts design inadequate big engines just about single important change can make struts virtually take full load airplane Redesign mind Metal fittings strut end bolted strong metal tach points both wing fuselage way go struts have metal cable shackle ends tied together c wire running length struts little overkill have no compunction about snap-rolling spinning 18-lb bird Second would well advised re place fuselage longerons /4 hardwood dowel balsawood structure just wont take banging heavier birds invariably get repairing major project nose area isnt too bad still needs can stiffen up Look over carefully wood supplied section replace soft pieces wood good hard density bird covered inside out layer 8-oz fiberglass back rear landing gear outside Since cut out door make operational stiffened cabin area replace strength lost mod biggest things did imbed 1/8 wire door win dow posts make forward pipe structure windshild brass tub ing wire splice pieces soldered joints ends tied heavily structure latter mod alone greatly stiffened up nose-cabin-wing area landing gear has have some pro vision flexing As designed almost totally rigid Since gear cant flex hard landing will bend something wheels alone arent sufficient ab sorb shock something havent fully cured yet several solutions work still ultimate have leave just make some modification have some flex gear dont like acetate windows trip local plastics store Taps Plastics will net l/l6 plexiglass Careful cutting RC-56 glue will get some very nice windows scale thickness pick up some very thick acetate butyrate sheet 040 thereabouts front windshield Use RC-56 glue also Now engine choice area can really cause howls cause isnt anyone know really has broad experience have Quadra access 15 cid Moki have seen DuBro belt drive run plane Therefore advised what am about say open controversy have modeling business 82 Model Aviation prnlrn INDUSTRIES INC 7060 HOIIywc.. .,. .. te think ideas valid general two types en gines available today glow engines follow standard modeling layout converted industrial en gines Im going out limb make two statements First glow engines follow stand ard model design much different engines have grown know love just bigger what have seen very power ful swing big props scream best suited smaller biggies ones modern faster planes no reason can used older bigger planes dont match character planes very light biggies such Nosen J-3 Champ will satisfactory smaller glow engines such Webra 90 reduction drive units several Really good 60s give solid extremely scale-like performance planes keeping mind real planes en gines also howled out guts fly Most people will opt something provides little extra spare bigger glow engines usable lighter biggies home something like Nosen Citabria Pitts would very interested see would perform something like Nosens new Mustang kind plane performance designed howling high speed secondly come pkce de resistance Quadra class big hulking monster prop-swingers Quadra can used virtually air plane home plane matches its own bulk such Nosen Mr Mulligan 1/3rd Pitts impressive sights have seen Jim Jacobsons 23-lb Mr Mulligan taking off its maiden flight big Quadra growling away up front airplane rolled about 75 feet pointed its snout up about 300 angle just scratched clawed its way growling sky wasnt real speed just awe some feeling power closest com parison can make 3000-hp Bearcat snarling away Reno runway kind bird Quadra born sounds good have Quadra Champ flies plane very well However en gine completely fills firewall cowling slightly oversize scale engines would better match just dont have class engines havent mentioned new multi-cylinder engines have seen Hargrave Radials offered Model Builder magazine have seen multi-cylinder engines run Opinion dont think engines going adaptable size models total displacement huge shudder think sticking $1000 front airplane Hargrave way gorgeous piece work Now Im going talk briefly about something has become near dear Quarter-Scale Asso ciation America group formed first Las Vegas National Fly-In last October devoted building flying Quarter-Scale very large models believe huge model built unique special unto itself therefore competition between would sacrilege Competition automatically implies rules rules restrictive dont want restrictions what beasts Basically bunch rugged individualists wish build what want want to get together others share joy achievements pick others brains dont want efforts mally judged because us winner minds primary purpose provide rallying point anyone interested can get information share has want get together fly-ins QS picnics barbeques have blast biggies enjoy company July1978 83 WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities R/C construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH US. SUBSCRIBE NOW AND GET 3 FREE ISSUES Fill out send coupon check Money Order year subscription $1600 will re ceive 3 additional FREE ISSUES total savings $750 Mail MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v33][b116127901210930]] REGULAR SUBSCRIPTION IS Name __________________________________________ $1500 SUBSCRIBE NOW AND Address ____________________________________________ SAVE $750! RECEIVE 15 ISSUESATONE-THIRDOFF! City __________________State ________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount other guys like us newsletter being published rapidly growing mini-magazine concentrates type information darned hard come interested QSAA send double-stamped large self-addressed envelope Ill send copy first newsletter Remember Big Beautiful QSAA motto SOME SUPPLY SOURCES Kits 3-3 Champ Citabria Mr Mulligan several others Bud Nosen Models PO Bos 105 Two Harbors MN 55616 Several WWl types Aerotec Model Engineering Co Box 116 Lincoindale NY 10540 Engines Quadra 20 cid converted chain-sass engine ignition Most hobby sbops can order Fine Star Specialties 3125 wilkins way Carmichael CA 95608 EWH Specialties Inc. 607 E Abrams Suite 410 Arlington TX 76010 MRCSuevia 25cc 15 cid glo Schenerle ported Most bobby shops can order MRC 2500 woodbridge Ave. Edison NJ 08817 MOKI 25cc glow Most hobby shops can order imported Polks Hobbies Five Star Specialties Isee address above Webra 90 05 80 Fox 78 Pro6 76 order through hobby sbops Plans parts Specifically designed large engines -also parts accessories Quadra engines accessories 1/3rd Pitts & Kraft Super-Fli Big Arts Models 20620 Emmett Taylor MI 48180 33 Cuh 90 PBY Stinson Vovoger others Sid Morgau Plans 13157 Ormond Belleville MI 48111 Fairchild PT19 spec6cally Quadra Jim Folline Lee Taylor 329 C St Roseville CA 95678 Curtiss Hawk PhE Stinsor Reliant 5R9 Barronss Scale Classics 1213 Holly Spring Lane Grand Blanc MI 48439 Bob Holmar Plans PO Box 714S San Bernardino C 2 Old Time Plan Sers Jobe Pond PO Bus 3113 San Jose CA 9556 Lee Taylor 329 C St Roseville CA 95678 RC Technique/Myers continued page 13 can operated position Jerry Jarvis MEN has hint car boat helicopter drivers re gard limiting maximum current drawn Add flywheel starter spin up starter before engaging belt flywheel will store up some energy will give internal combustion motor just time peak energy demand takes some strain off battery gives stronger starting jolt Storage Gel cells store well Ive telling recharge nickle-cad mium batteries once month whether use Vince Calouri Boe ing Hawks told just last month talk given Hawks Boeing bat tery expert name carelessly got write down rate mes sage Put little load battery just before recharge optimum results Exercising RC system few minutes will sufficient re charge Now back gel cells Stored room temperature fully charged gel cell will drop half its capacity about nine months Thats pretty good So recharge stored gel cells twice year whether use Failure keep fully charged leads sulfation plates permanently reduces battery capacity Connectors If gel cell has tabs like some Astro Flight batteries Fig Radio Shack has push-on connector can installed wire just pair pliers Id give part number change too fast just look around among blister packs ask help Molex con nectors can sometimes found auto parts stores Fig 6 shows another alterna tive Concepts Unlimited 36C Carlough Place Bohemia NY 11716 distributing Anderson Power Products kit shown connectors mate Gelyte battery distributed CU UL Canadian standard certified contacts wipe together recommen ded both battery manufacturers shells color coded keyed sides can assemble just about kind special plug might want Use substitutes wire nuts installing electrical fixtures local wiring code permits simplify job lot No holding up fixture hand try turn wire nut other also work well making connections car like CB cuss cuss stereo See dealer first What else can tell about gel cells Keep cool operate range 40nF 140F trunk car gets up l40F hot sun temperature hastens self-discharge kinds batteries Gel cells rated 20-hour rate reason yield greatest ca pacity rate starter motor draws lot short time dont worry about Charge gel cell soon get because theres no way knowing left factory fully charged stored interim Capacity will crease during first few charge/dis charge cycles gel cell considered expended its available capacity measured 20-hour rate C/20 ps 6-amp-hour pack drops half its original value George M Myers 70 Froehlich Farm Rd Hicks yule NY 1180] Agrivation/Haught continued page 18 thoroughly Fit center ribs cutting out sec tions needed Install leading edge sheet ing center-section planking Shape sheet wing tips shown typical sec tion Cap tops ribs 2 strips Sand wing structure rounding lead ing trailing edge members final shape Cut ailerons trailing edge stock sand shape Install 3/32 wire horns Klett AB-4 bearings hinge wing Horns should bent forward shown insure up aileron travel down necessary insure smooth entry turns high lifting airfoil Fabricate plywood servo doubler fit servo used install shown Cut out planking accommodate servo Standard Du-Bro aileron linkage recom mended completes basic structure Give components final sanding proceed favorite covering finishing procedure iron-on coverings satis factory prefer traditional methods suggest fabric wings either ironed-on Coverite doped-on silk Silron doped-on Silkspan over bare wood parts Silkspan easily applied 75% thinner-25% dope mixture brushed through paper after preparing wood application two coats clear dope 84 Model Aviation 4 NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM ~LYLINE utlsi,tOnp,hO upRa,au,nAiid 2345RPRAdRI , EXiRla i,,,5 Run n2X p.$1295 XuXflb. PXR, Sig StO IXAL XiApe9 flIZhi XR5A P,r,XX Send 254 catalog See dealer oIl FLYLINEa cloaaic kita NOW FLYLINE MODELS INC 031 5734335 HEINKEL 1000 ninsata RAXR * flX3 RfRXR, XAA, PAR Rlii33XSIXOiPRX2X P32 Flu, PAhiin 12
Edition: Model Aviation - 1978/07
Page Numbers: 8, 9, 10, 11, 82, 83, 84
ONE OF THE things modelers have al ways dreamed big beautiful scale model Picture example onethird life-size Stearman sailing overhead Sunlight sparkles off huge wings steadily spinning prop big biplane pulls up gracefully completes loop rolls majestically dream longer day big model has fi nally arrived always few people felt achieve dreams cost Bill Bertrand often heard comments -scale Fokker D-VII flights highlights Nats Ed Morgan Las Vegas flying nine-foot J-3 Cub engine made out two McCoy 60s us thought plane Torpedo 45 monster Everyone enthralled big birds far out reach average modeler machine work modify engines insurmountable task designing own airplane anything go structural tech nique flight dynamic requirements usable materials mention poor reliabil ity radios time too much supermen changed now Nine-foot J-3s Champs Citabrias becoming almost commonplace far-out designs popping up over catalyst explosion arrival mar ket really big bolt-in engines re quire no work other model engine get run have lifting power Atlas biggest problem has always lack power Regardless what some people have preached nine-foot airplane 60 power does have gener ally acceptable performance can done isnt good enough day fun big OS 80 struggled As big Ed Morgans Custom van Tom Bunkers huge Learliner displayed Morgan Pat Bunker powered two pusher 60s rear nacelles About make some adjustments big white jet Tom Bunker seems praying Manitou 8 Model Aviation Floppy-hatted Bob Haight expert pilot Pfalz Bob Mickelsen WW-l fighter powered convered Cox chain-saw engine Right told Dicture Pfalz real thing Western Front wed bet youd buy it isnt birds about two years ago things started fall place Radios developed point no longer limiting factor Really good builders pilots becoming bored same old sized models everyone has building years Competition de veloped point superdedicated bad chance winning People started remembering spar kling daydreams asking themselves scene appeared Ron Shettler quietly saying marketing 20 cid converted chain-saw engine especially adapted model use called Quadra say Ron vision ary would have stretched point Everyone sneered idea men tioned said Yeah Suurre few people tried Quadra liked big-airplane movement got off ground Manufacturers actually started making products intended mon sters Suddenly Quarter-Scale bigEd Morgan readies Mooney Mite its fateful last flight much time expense invested monster big-model pilot becomes orderly well-disciplined operator Right Size makes detailing easier Mites cockpit complete keys ignition Lee Taylors Quadra engine completely fills firewall Nosen Champion its sound life-like Although big powerful Quadra economical its gas-and-oil mixture ger arrived New very good engines made appearance real announcement birth Quarter-Scale came last year Las Vegas Eddie Morgan brought dream lifetime fruition first-annual Quarter-Scale National FlyIn little advertising 32 monster models over 100 modelers showed up form Quarter-Scale Association America later Most appealing diversity en gines becoming available range way some newer little 60s earning reputa tion being excellent luggers lighter biggies up through 80s 90s 1 4s 15s finally Shettlers big 20 cid Quadra course exactly cheap Prices start $50 uncon verted industrial engine go rapidly up Most follow standard glow engine concept some converted indus trial engines some like Quadra retain ignition such industrial en gines Several manufacturers have come out reduction drives allow standard proven 60s swing much bigger prop Large propellers available quite reasonable prices Wheels hardware new accessory products showing up fast hard keep up just exactly what avail able general monster scale has arrived course being new baby man about become firsttime parent faced whole new set bewildering problems techniques has learned past need modified gotten new ones learned What ma terials use What strong enough Can find cheaper way ing What engine will work best model want God turkey going weigh 25 pounds Once serious work begins almost unanimous reaction panicky call help no way per son can take upon himself answer questions everyone has concerning models size will attempt de scribe what think good way go see two major problems almost has faced starting big birds First course what will work building Second very important pilot ability big birds fly very very well also fly quite differently regular models little thought practice beforehand will save some anxious moments air can stand waiting just little before starting big bird have method will save some grief long run Buy Sig J-3 Cub kitthe long-wing original Hazels clippedwing build Mentally make ninefooter out take time study construction go think vari ous ways might change things strengthen Think 10 Model Aviation Paul Sims beautiful modified Nosen Champion powered K&B 61 pumper essen tial consideration projecting biggie landing gear really absorb heavy impacts Little Chrissy Calmy proud grandaddys Fleet biplaneas no doubt Stan Design executed feeling shows through Wonder Chrissy will remember Frank Comys Fokker Eindecker feaiurs mu triai engine cable-actuated wing warping aileron control swiveling pilots head would like rig wires terms thin plywood instead balsa Cub designed years ago Its construction very similar what used biggies can visual ize problem areas might crop up later biggie example look closely kit analyze might see corner longerons balsa ex posed bumps bangs Wouldnt better made small hardwood dowel might break easily what about wing strut attachment Sure good enough plane flew virtually free flight 09 will stand up stresses modern-day engine pulling through snap rolls spins cabin structure looks flimsy windows make very little structure hold wing fuselage Dowels spliced window posts running way up wing root area down fuselage tie everything together will add immeasurably strength tubing structure windshield can made out wire running down deep corners help tie front cabin together helping lot struc tural rigidity forward section quick reminder As ing experimental building little J-3 sure mentally blow up monster size Get used thinking about what kind forces strengths shortly will dealing Remember will no longer dealing just fairly moderate forces engines will use put out fearsome power big heavy get much metal charging up down cylinder swinging 16 18 20 props vibra tions stresses no longer something simple balsawood model cement can handle have start thinking about structure can designed help out once arent going worrying much about weight least nose Cover model silk doublecovered Silkspan Get used idea building covering model again rather just wrapping up like pack age plastic wrap bigger birds little J-3 also designed covering mind add structural strength rigidity plastic films use big gie going lose great deal strength designed model As doing covering paint ing aware what doing point can really pile pounds become sloppy point get good finish hare minimum number coats Start structure very well finished bumps dents will need fill later lead putty Put covering smoothly evenly taking time pull out wrinkles smooth out seams little extra time will save hours sanding filling importantly pounds weight What brush stroke Cub model will bottle paint biggie Practice doing things right first time dont have worry about repairing goofs later Plan powering plane good 19 25 1 can recommend either OS 25 Fox 25 use power you will negate training aspects bird Use full 4-channel radio normal controls Stick parachute drop fun Now comes fun part some hardest work must learn fly beast Remember stick controls rudder Yeah use steering ground have always forgotten about once air now cannot forget about air going become just important elevator important ailerons Yep will have learn fly both sticks time built little J-3 excellent trainer purpose Continued page 82 July1978 11 say bgplane bug bit Tom Bunker putting mildly camera just caught him magic moment releases Nosen Citabria hand fin line up Las Vegas WW-1 squadron R Bob Haight Pfalz Tom Mahon Fokker D-VII Ernie Muller D-V II Frank Comyn Eindecker size flying site worth noting ambroid Dont give good old days model buildingI like whats around today Dick Henderson Phoenix AZ Thinking Big/Taylor continued page 71 bird flies rather poorly dont properly will start learn about taildraggers nice gentle landings Any other kind will get much trouble little bird muffed landing will bruise ego assum ing did beefing up talked about earlier biggies 15-30 pounds crashing ground will bend something major blow land ing something minor noseup becomes catastrophe biggie big props cost minimum $4 friend wiped out $36 worth props making two flights Ill tell little secret have used several years will learn wheel-land 1-3 will use knowledge biggies landings will much less sweaty proposition use standard full-stall touch-down Reason full-stall land ing control lost moment stall hopefully exact same instant wheels hit ground timing doesnt happen rare does left bird ticklish atti tude out control no airspeed really super pilot can sometimes recover situation Mostly poor plane its own flop down way can will wheel-land bird plane literally flown down ground Air speed maintained way through touch-down through initial part roll-out Therefore should things get out whack last second still have some airspeed bank can use speed give ex tra edge get out trouble Im say ing now can get out situa tion still have have cool head least have little something ex tra work secret good wheel landing little extra airspeed Carry airspeed right down flare instead try ing hold plane off concentrate getting level attitude just about inch off ground other words stead flaring just break glide ground level Now comes scary part need skill plane one-inch altitude level attitude tap about quarter-inch down ele vator hold until plane loses fly ing speed everything works out right plane will just gently tap its wheels down down elevator will glue onto runway As speed drops off come back easily full up elevator avoid nosing over Practice maneuver over over Cub skills developed will stand good stead rest flying career Fail people get serious taildrag gers especially biggies will spend time repairing flying fullstall landing airplane killer Thats full-scale flying perfect threepoint landing considered beautiful darned hard wheel landing much safer tail-high rollout thing turns crowds OK youve built little learning about basic techniques type model Youve mentally prepared self engineering beef required powerful biggie flying beautiful time show up field buddies put away planes shame youre hot trot What going build Im afraid tlat have turn loose So far just arent kits available few plans very few actually designed kind power will using As matter fact three sets plans currently available specifically de signed big engines know Andy Shebers Pitts Special Kraft Super-Fli plans available both A-scale Jim Follines Y4-scale Quadra-designed PT-19 Jims plans available Andys address end article kits plans way Im sure Im going taken task time printed right now products specific new powerplants have seen almost Nosen kits am flying heavily-modified Nosen Champ very good starting points anyone However advised Buds kits designed fly maximum 80 engine doesnt put out power good Schnuerle 60 consequently very light construction kind power now norm fly very well good basic kits require considerable beefing-up some outright redesign big engines Since almost everyone starts Buds kits will go out limb men tion some things have done flying models bigger powerplants First off Nosen planes have wing struts design inadequate big engines just about single important change can make struts virtually take full load airplane Redesign mind Metal fittings strut end bolted strong metal tach points both wing fuselage way go struts have metal cable shackle ends tied together c wire running length struts little overkill have no compunction about snap-rolling spinning 18-lb bird Second would well advised re place fuselage longerons /4 hardwood dowel balsawood structure just wont take banging heavier birds invariably get repairing major project nose area isnt too bad still needs can stiffen up Look over carefully wood supplied section replace soft pieces wood good hard density bird covered inside out layer 8-oz fiberglass back rear landing gear outside Since cut out door make operational stiffened cabin area replace strength lost mod biggest things did imbed 1/8 wire door win dow posts make forward pipe structure windshild brass tub ing wire splice pieces soldered joints ends tied heavily structure latter mod alone greatly stiffened up nose-cabin-wing area landing gear has have some pro vision flexing As designed almost totally rigid Since gear cant flex hard landing will bend something wheels alone arent sufficient ab sorb shock something havent fully cured yet several solutions work still ultimate have leave just make some modification have some flex gear dont like acetate windows trip local plastics store Taps Plastics will net l/l6 plexiglass Careful cutting RC-56 glue will get some very nice windows scale thickness pick up some very thick acetate butyrate sheet 040 thereabouts front windshield Use RC-56 glue also Now engine choice area can really cause howls cause isnt anyone know really has broad experience have Quadra access 15 cid Moki have seen DuBro belt drive run plane Therefore advised what am about say open controversy have modeling business 82 Model Aviation prnlrn INDUSTRIES INC 7060 HOIIywc.. .,. .. te think ideas valid general two types en gines available today glow engines follow standard modeling layout converted industrial en gines Im going out limb make two statements First glow engines follow stand ard model design much different engines have grown know love just bigger what have seen very power ful swing big props scream best suited smaller biggies ones modern faster planes no reason can used older bigger planes dont match character planes very light biggies such Nosen J-3 Champ will satisfactory smaller glow engines such Webra 90 reduction drive units several Really good 60s give solid extremely scale-like performance planes keeping mind real planes en gines also howled out guts fly Most people will opt something provides little extra spare bigger glow engines usable lighter biggies home something like Nosen Citabria Pitts would very interested see would perform something like Nosens new Mustang kind plane performance designed howling high speed secondly come pkce de resistance Quadra class big hulking monster prop-swingers Quadra can used virtually air plane home plane matches its own bulk such Nosen Mr Mulligan 1/3rd Pitts impressive sights have seen Jim Jacobsons 23-lb Mr Mulligan taking off its maiden flight big Quadra growling away up front airplane rolled about 75 feet pointed its snout up about 300 angle just scratched clawed its way growling sky wasnt real speed just awe some feeling power closest com parison can make 3000-hp Bearcat snarling away Reno runway kind bird Quadra born sounds good have Quadra Champ flies plane very well However en gine completely fills firewall cowling slightly oversize scale engines would better match just dont have class engines havent mentioned new multi-cylinder engines have seen Hargrave Radials offered Model Builder magazine have seen multi-cylinder engines run Opinion dont think engines going adaptable size models total displacement huge shudder think sticking $1000 front airplane Hargrave way gorgeous piece work Now Im going talk briefly about something has become near dear Quarter-Scale Asso ciation America group formed first Las Vegas National Fly-In last October devoted building flying Quarter-Scale very large models believe huge model built unique special unto itself therefore competition between would sacrilege Competition automatically implies rules rules restrictive dont want restrictions what beasts Basically bunch rugged individualists wish build what want want to get together others share joy achievements pick others brains dont want efforts mally judged because us winner minds primary purpose provide rallying point anyone interested can get information share has want get together fly-ins QS picnics barbeques have blast biggies enjoy company July1978 83 WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities R/C construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH US. SUBSCRIBE NOW AND GET 3 FREE ISSUES Fill out send coupon check Money Order year subscription $1600 will re ceive 3 additional FREE ISSUES total savings $750 Mail MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v33][b116127901210930]] REGULAR SUBSCRIPTION IS Name __________________________________________ $1500 SUBSCRIBE NOW AND Address ____________________________________________ SAVE $750! RECEIVE 15 ISSUESATONE-THIRDOFF! City __________________State ________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount other guys like us newsletter being published rapidly growing mini-magazine concentrates type information darned hard come interested QSAA send double-stamped large self-addressed envelope Ill send copy first newsletter Remember Big Beautiful QSAA motto SOME SUPPLY SOURCES Kits 3-3 Champ Citabria Mr Mulligan several others Bud Nosen Models PO Bos 105 Two Harbors MN 55616 Several WWl types Aerotec Model Engineering Co Box 116 Lincoindale NY 10540 Engines Quadra 20 cid converted chain-sass engine ignition Most hobby sbops can order Fine Star Specialties 3125 wilkins way Carmichael CA 95608 EWH Specialties Inc. 607 E Abrams Suite 410 Arlington TX 76010 MRCSuevia 25cc 15 cid glo Schenerle ported Most bobby shops can order MRC 2500 woodbridge Ave. Edison NJ 08817 MOKI 25cc glow Most hobby shops can order imported Polks Hobbies Five Star Specialties Isee address above Webra 90 05 80 Fox 78 Pro6 76 order through hobby sbops Plans parts Specifically designed large engines -also parts accessories Quadra engines accessories 1/3rd Pitts & Kraft Super-Fli Big Arts Models 20620 Emmett Taylor MI 48180 33 Cuh 90 PBY Stinson Vovoger others Sid Morgau Plans 13157 Ormond Belleville MI 48111 Fairchild PT19 spec6cally Quadra Jim Folline Lee Taylor 329 C St Roseville CA 95678 Curtiss Hawk PhE Stinsor Reliant 5R9 Barronss Scale Classics 1213 Holly Spring Lane Grand Blanc MI 48439 Bob Holmar Plans PO Box 714S San Bernardino C 2 Old Time Plan Sers Jobe Pond PO Bus 3113 San Jose CA 9556 Lee Taylor 329 C St Roseville CA 95678 RC Technique/Myers continued page 13 can operated position Jerry Jarvis MEN has hint car boat helicopter drivers re gard limiting maximum current drawn Add flywheel starter spin up starter before engaging belt flywheel will store up some energy will give internal combustion motor just time peak energy demand takes some strain off battery gives stronger starting jolt Storage Gel cells store well Ive telling recharge nickle-cad mium batteries once month whether use Vince Calouri Boe ing Hawks told just last month talk given Hawks Boeing bat tery expert name carelessly got write down rate mes sage Put little load battery just before recharge optimum results Exercising RC system few minutes will sufficient re charge Now back gel cells Stored room temperature fully charged gel cell will drop half its capacity about nine months Thats pretty good So recharge stored gel cells twice year whether use Failure keep fully charged leads sulfation plates permanently reduces battery capacity Connectors If gel cell has tabs like some Astro Flight batteries Fig Radio Shack has push-on connector can installed wire just pair pliers Id give part number change too fast just look around among blister packs ask help Molex con nectors can sometimes found auto parts stores Fig 6 shows another alterna tive Concepts Unlimited 36C Carlough Place Bohemia NY 11716 distributing Anderson Power Products kit shown connectors mate Gelyte battery distributed CU UL Canadian standard certified contacts wipe together recommen ded both battery manufacturers shells color coded keyed sides can assemble just about kind special plug might want Use substitutes wire nuts installing electrical fixtures local wiring code permits simplify job lot No holding up fixture hand try turn wire nut other also work well making connections car like CB cuss cuss stereo See dealer first What else can tell about gel cells Keep cool operate range 40nF 140F trunk car gets up l40F hot sun temperature hastens self-discharge kinds batteries Gel cells rated 20-hour rate reason yield greatest ca pacity rate starter motor draws lot short time dont worry about Charge gel cell soon get because theres no way knowing left factory fully charged stored interim Capacity will crease during first few charge/dis charge cycles gel cell considered expended its available capacity measured 20-hour rate C/20 ps 6-amp-hour pack drops half its original value George M Myers 70 Froehlich Farm Rd Hicks yule NY 1180] Agrivation/Haught continued page 18 thoroughly Fit center ribs cutting out sec tions needed Install leading edge sheet ing center-section planking Shape sheet wing tips shown typical sec tion Cap tops ribs 2 strips Sand wing structure rounding lead ing trailing edge members final shape Cut ailerons trailing edge stock sand shape Install 3/32 wire horns Klett AB-4 bearings hinge wing Horns should bent forward shown insure up aileron travel down necessary insure smooth entry turns high lifting airfoil Fabricate plywood servo doubler fit servo used install shown Cut out planking accommodate servo Standard Du-Bro aileron linkage recom mended completes basic structure Give components final sanding proceed favorite covering finishing procedure iron-on coverings satis factory prefer traditional methods suggest fabric wings either ironed-on Coverite doped-on silk Silron doped-on Silkspan over bare wood parts Silkspan easily applied 75% thinner-25% dope mixture brushed through paper after preparing wood application two coats clear dope 84 Model Aviation 4 NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM ~LYLINE utlsi,tOnp,hO upRa,au,nAiid 2345RPRAdRI , EXiRla i,,,5 Run n2X p.$1295 XuXflb. PXR, Sig StO IXAL XiApe9 flIZhi XR5A P,r,XX Send 254 catalog See dealer oIl FLYLINEa cloaaic kita NOW FLYLINE MODELS INC 031 5734335 HEINKEL 1000 ninsata RAXR * flX3 RfRXR, XAA, PAR Rlii33XSIXOiPRX2X P32 Flu, PAhiin 12
Edition: Model Aviation - 1978/07
Page Numbers: 8, 9, 10, 11, 82, 83, 84
ONE OF THE things modelers have al ways dreamed big beautiful scale model Picture example onethird life-size Stearman sailing overhead Sunlight sparkles off huge wings steadily spinning prop big biplane pulls up gracefully completes loop rolls majestically dream longer day big model has fi nally arrived always few people felt achieve dreams cost Bill Bertrand often heard comments -scale Fokker D-VII flights highlights Nats Ed Morgan Las Vegas flying nine-foot J-3 Cub engine made out two McCoy 60s us thought plane Torpedo 45 monster Everyone enthralled big birds far out reach average modeler machine work modify engines insurmountable task designing own airplane anything go structural tech nique flight dynamic requirements usable materials mention poor reliabil ity radios time too much supermen changed now Nine-foot J-3s Champs Citabrias becoming almost commonplace far-out designs popping up over catalyst explosion arrival mar ket really big bolt-in engines re quire no work other model engine get run have lifting power Atlas biggest problem has always lack power Regardless what some people have preached nine-foot airplane 60 power does have gener ally acceptable performance can done isnt good enough day fun big OS 80 struggled As big Ed Morgans Custom van Tom Bunkers huge Learliner displayed Morgan Pat Bunker powered two pusher 60s rear nacelles About make some adjustments big white jet Tom Bunker seems praying Manitou 8 Model Aviation Floppy-hatted Bob Haight expert pilot Pfalz Bob Mickelsen WW-l fighter powered convered Cox chain-saw engine Right told Dicture Pfalz real thing Western Front wed bet youd buy it isnt birds about two years ago things started fall place Radios developed point no longer limiting factor Really good builders pilots becoming bored same old sized models everyone has building years Competition de veloped point superdedicated bad chance winning People started remembering spar kling daydreams asking themselves scene appeared Ron Shettler quietly saying marketing 20 cid converted chain-saw engine especially adapted model use called Quadra say Ron vision ary would have stretched point Everyone sneered idea men tioned said Yeah Suurre few people tried Quadra liked big-airplane movement got off ground Manufacturers actually started making products intended mon sters Suddenly Quarter-Scale bigEd Morgan readies Mooney Mite its fateful last flight much time expense invested monster big-model pilot becomes orderly well-disciplined operator Right Size makes detailing easier Mites cockpit complete keys ignition Lee Taylors Quadra engine completely fills firewall Nosen Champion its sound life-like Although big powerful Quadra economical its gas-and-oil mixture ger arrived New very good engines made appearance real announcement birth Quarter-Scale came last year Las Vegas Eddie Morgan brought dream lifetime fruition first-annual Quarter-Scale National FlyIn little advertising 32 monster models over 100 modelers showed up form Quarter-Scale Association America later Most appealing diversity en gines becoming available range way some newer little 60s earning reputa tion being excellent luggers lighter biggies up through 80s 90s 1 4s 15s finally Shettlers big 20 cid Quadra course exactly cheap Prices start $50 uncon verted industrial engine go rapidly up Most follow standard glow engine concept some converted indus trial engines some like Quadra retain ignition such industrial en gines Several manufacturers have come out reduction drives allow standard proven 60s swing much bigger prop Large propellers available quite reasonable prices Wheels hardware new accessory products showing up fast hard keep up just exactly what avail able general monster scale has arrived course being new baby man about become firsttime parent faced whole new set bewildering problems techniques has learned past need modified gotten new ones learned What ma terials use What strong enough Can find cheaper way ing What engine will work best model want God turkey going weigh 25 pounds Once serious work begins almost unanimous reaction panicky call help no way per son can take upon himself answer questions everyone has concerning models size will attempt de scribe what think good way go see two major problems almost has faced starting big birds First course what will work building Second very important pilot ability big birds fly very very well also fly quite differently regular models little thought practice beforehand will save some anxious moments air can stand waiting just little before starting big bird have method will save some grief long run Buy Sig J-3 Cub kitthe long-wing original Hazels clippedwing build Mentally make ninefooter out take time study construction go think vari ous ways might change things strengthen Think 10 Model Aviation Paul Sims beautiful modified Nosen Champion powered K&B 61 pumper essen tial consideration projecting biggie landing gear really absorb heavy impacts Little Chrissy Calmy proud grandaddys Fleet biplaneas no doubt Stan Design executed feeling shows through Wonder Chrissy will remember Frank Comys Fokker Eindecker feaiurs mu triai engine cable-actuated wing warping aileron control swiveling pilots head would like rig wires terms thin plywood instead balsa Cub designed years ago Its construction very similar what used biggies can visual ize problem areas might crop up later biggie example look closely kit analyze might see corner longerons balsa ex posed bumps bangs Wouldnt better made small hardwood dowel might break easily what about wing strut attachment Sure good enough plane flew virtually free flight 09 will stand up stresses modern-day engine pulling through snap rolls spins cabin structure looks flimsy windows make very little structure hold wing fuselage Dowels spliced window posts running way up wing root area down fuselage tie everything together will add immeasurably strength tubing structure windshield can made out wire running down deep corners help tie front cabin together helping lot struc tural rigidity forward section quick reminder As ing experimental building little J-3 sure mentally blow up monster size Get used thinking about what kind forces strengths shortly will dealing Remember will no longer dealing just fairly moderate forces engines will use put out fearsome power big heavy get much metal charging up down cylinder swinging 16 18 20 props vibra tions stresses no longer something simple balsawood model cement can handle have start thinking about structure can designed help out once arent going worrying much about weight least nose Cover model silk doublecovered Silkspan Get used idea building covering model again rather just wrapping up like pack age plastic wrap bigger birds little J-3 also designed covering mind add structural strength rigidity plastic films use big gie going lose great deal strength designed model As doing covering paint ing aware what doing point can really pile pounds become sloppy point get good finish hare minimum number coats Start structure very well finished bumps dents will need fill later lead putty Put covering smoothly evenly taking time pull out wrinkles smooth out seams little extra time will save hours sanding filling importantly pounds weight What brush stroke Cub model will bottle paint biggie Practice doing things right first time dont have worry about repairing goofs later Plan powering plane good 19 25 1 can recommend either OS 25 Fox 25 use power you will negate training aspects bird Use full 4-channel radio normal controls Stick parachute drop fun Now comes fun part some hardest work must learn fly beast Remember stick controls rudder Yeah use steering ground have always forgotten about once air now cannot forget about air going become just important elevator important ailerons Yep will have learn fly both sticks time built little J-3 excellent trainer purpose Continued page 82 July1978 11 say bgplane bug bit Tom Bunker putting mildly camera just caught him magic moment releases Nosen Citabria hand fin line up Las Vegas WW-1 squadron R Bob Haight Pfalz Tom Mahon Fokker D-VII Ernie Muller D-V II Frank Comyn Eindecker size flying site worth noting ambroid Dont give good old days model buildingI like whats around today Dick Henderson Phoenix AZ Thinking Big/Taylor continued page 71 bird flies rather poorly dont properly will start learn about taildraggers nice gentle landings Any other kind will get much trouble little bird muffed landing will bruise ego assum ing did beefing up talked about earlier biggies 15-30 pounds crashing ground will bend something major blow land ing something minor noseup becomes catastrophe biggie big props cost minimum $4 friend wiped out $36 worth props making two flights Ill tell little secret have used several years will learn wheel-land 1-3 will use knowledge biggies landings will much less sweaty proposition use standard full-stall touch-down Reason full-stall land ing control lost moment stall hopefully exact same instant wheels hit ground timing doesnt happen rare does left bird ticklish atti tude out control no airspeed really super pilot can sometimes recover situation Mostly poor plane its own flop down way can will wheel-land bird plane literally flown down ground Air speed maintained way through touch-down through initial part roll-out Therefore should things get out whack last second still have some airspeed bank can use speed give ex tra edge get out trouble Im say ing now can get out situa tion still have have cool head least have little something ex tra work secret good wheel landing little extra airspeed Carry airspeed right down flare instead try ing hold plane off concentrate getting level attitude just about inch off ground other words stead flaring just break glide ground level Now comes scary part need skill plane one-inch altitude level attitude tap about quarter-inch down ele vator hold until plane loses fly ing speed everything works out right plane will just gently tap its wheels down down elevator will glue onto runway As speed drops off come back easily full up elevator avoid nosing over Practice maneuver over over Cub skills developed will stand good stead rest flying career Fail people get serious taildrag gers especially biggies will spend time repairing flying fullstall landing airplane killer Thats full-scale flying perfect threepoint landing considered beautiful darned hard wheel landing much safer tail-high rollout thing turns crowds OK youve built little learning about basic techniques type model Youve mentally prepared self engineering beef required powerful biggie flying beautiful time show up field buddies put away planes shame youre hot trot What going build Im afraid tlat have turn loose So far just arent kits available few plans very few actually designed kind power will using As matter fact three sets plans currently available specifically de signed big engines know Andy Shebers Pitts Special Kraft Super-Fli plans available both A-scale Jim Follines Y4-scale Quadra-designed PT-19 Jims plans available Andys address end article kits plans way Im sure Im going taken task time printed right now products specific new powerplants have seen almost Nosen kits am flying heavily-modified Nosen Champ very good starting points anyone However advised Buds kits designed fly maximum 80 engine doesnt put out power good Schnuerle 60 consequently very light construction kind power now norm fly very well good basic kits require considerable beefing-up some outright redesign big engines Since almost everyone starts Buds kits will go out limb men tion some things have done flying models bigger powerplants First off Nosen planes have wing struts design inadequate big engines just about single important change can make struts virtually take full load airplane Redesign mind Metal fittings strut end bolted strong metal tach points both wing fuselage way go struts have metal cable shackle ends tied together c wire running length struts little overkill have no compunction about snap-rolling spinning 18-lb bird Second would well advised re place fuselage longerons /4 hardwood dowel balsawood structure just wont take banging heavier birds invariably get repairing major project nose area isnt too bad still needs can stiffen up Look over carefully wood supplied section replace soft pieces wood good hard density bird covered inside out layer 8-oz fiberglass back rear landing gear outside Since cut out door make operational stiffened cabin area replace strength lost mod biggest things did imbed 1/8 wire door win dow posts make forward pipe structure windshild brass tub ing wire splice pieces soldered joints ends tied heavily structure latter mod alone greatly stiffened up nose-cabin-wing area landing gear has have some pro vision flexing As designed almost totally rigid Since gear cant flex hard landing will bend something wheels alone arent sufficient ab sorb shock something havent fully cured yet several solutions work still ultimate have leave just make some modification have some flex gear dont like acetate windows trip local plastics store Taps Plastics will net l/l6 plexiglass Careful cutting RC-56 glue will get some very nice windows scale thickness pick up some very thick acetate butyrate sheet 040 thereabouts front windshield Use RC-56 glue also Now engine choice area can really cause howls cause isnt anyone know really has broad experience have Quadra access 15 cid Moki have seen DuBro belt drive run plane Therefore advised what am about say open controversy have modeling business 82 Model Aviation prnlrn INDUSTRIES INC 7060 HOIIywc.. .,. .. te think ideas valid general two types en gines available today glow engines follow standard modeling layout converted industrial en gines Im going out limb make two statements First glow engines follow stand ard model design much different engines have grown know love just bigger what have seen very power ful swing big props scream best suited smaller biggies ones modern faster planes no reason can used older bigger planes dont match character planes very light biggies such Nosen J-3 Champ will satisfactory smaller glow engines such Webra 90 reduction drive units several Really good 60s give solid extremely scale-like performance planes keeping mind real planes en gines also howled out guts fly Most people will opt something provides little extra spare bigger glow engines usable lighter biggies home something like Nosen Citabria Pitts would very interested see would perform something like Nosens new Mustang kind plane performance designed howling high speed secondly come pkce de resistance Quadra class big hulking monster prop-swingers Quadra can used virtually air plane home plane matches its own bulk such Nosen Mr Mulligan 1/3rd Pitts impressive sights have seen Jim Jacobsons 23-lb Mr Mulligan taking off its maiden flight big Quadra growling away up front airplane rolled about 75 feet pointed its snout up about 300 angle just scratched clawed its way growling sky wasnt real speed just awe some feeling power closest com parison can make 3000-hp Bearcat snarling away Reno runway kind bird Quadra born sounds good have Quadra Champ flies plane very well However en gine completely fills firewall cowling slightly oversize scale engines would better match just dont have class engines havent mentioned new multi-cylinder engines have seen Hargrave Radials offered Model Builder magazine have seen multi-cylinder engines run Opinion dont think engines going adaptable size models total displacement huge shudder think sticking $1000 front airplane Hargrave way gorgeous piece work Now Im going talk briefly about something has become near dear Quarter-Scale Asso ciation America group formed first Las Vegas National Fly-In last October devoted building flying Quarter-Scale very large models believe huge model built unique special unto itself therefore competition between would sacrilege Competition automatically implies rules rules restrictive dont want restrictions what beasts Basically bunch rugged individualists wish build what want want to get together others share joy achievements pick others brains dont want efforts mally judged because us winner minds primary purpose provide rallying point anyone interested can get information share has want get together fly-ins QS picnics barbeques have blast biggies enjoy company July1978 83 WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities R/C construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH US. SUBSCRIBE NOW AND GET 3 FREE ISSUES Fill out send coupon check Money Order year subscription $1600 will re ceive 3 additional FREE ISSUES total savings $750 Mail MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v33][b116127901210930]] REGULAR SUBSCRIPTION IS Name __________________________________________ $1500 SUBSCRIBE NOW AND Address ____________________________________________ SAVE $750! RECEIVE 15 ISSUESATONE-THIRDOFF! City __________________State ________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount other guys like us newsletter being published rapidly growing mini-magazine concentrates type information darned hard come interested QSAA send double-stamped large self-addressed envelope Ill send copy first newsletter Remember Big Beautiful QSAA motto SOME SUPPLY SOURCES Kits 3-3 Champ Citabria Mr Mulligan several others Bud Nosen Models PO Bos 105 Two Harbors MN 55616 Several WWl types Aerotec Model Engineering Co Box 116 Lincoindale NY 10540 Engines Quadra 20 cid converted chain-sass engine ignition Most hobby sbops can order Fine Star Specialties 3125 wilkins way Carmichael CA 95608 EWH Specialties Inc. 607 E Abrams Suite 410 Arlington TX 76010 MRCSuevia 25cc 15 cid glo Schenerle ported Most bobby shops can order MRC 2500 woodbridge Ave. Edison NJ 08817 MOKI 25cc glow Most hobby shops can order imported Polks Hobbies Five Star Specialties Isee address above Webra 90 05 80 Fox 78 Pro6 76 order through hobby sbops Plans parts Specifically designed large engines -also parts accessories Quadra engines accessories 1/3rd Pitts & Kraft Super-Fli Big Arts Models 20620 Emmett Taylor MI 48180 33 Cuh 90 PBY Stinson Vovoger others Sid Morgau Plans 13157 Ormond Belleville MI 48111 Fairchild PT19 spec6cally Quadra Jim Folline Lee Taylor 329 C St Roseville CA 95678 Curtiss Hawk PhE Stinsor Reliant 5R9 Barronss Scale Classics 1213 Holly Spring Lane Grand Blanc MI 48439 Bob Holmar Plans PO Box 714S San Bernardino C 2 Old Time Plan Sers Jobe Pond PO Bus 3113 San Jose CA 9556 Lee Taylor 329 C St Roseville CA 95678 RC Technique/Myers continued page 13 can operated position Jerry Jarvis MEN has hint car boat helicopter drivers re gard limiting maximum current drawn Add flywheel starter spin up starter before engaging belt flywheel will store up some energy will give internal combustion motor just time peak energy demand takes some strain off battery gives stronger starting jolt Storage Gel cells store well Ive telling recharge nickle-cad mium batteries once month whether use Vince Calouri Boe ing Hawks told just last month talk given Hawks Boeing bat tery expert name carelessly got write down rate mes sage Put little load battery just before recharge optimum results Exercising RC system few minutes will sufficient re charge Now back gel cells Stored room temperature fully charged gel cell will drop half its capacity about nine months Thats pretty good So recharge stored gel cells twice year whether use Failure keep fully charged leads sulfation plates permanently reduces battery capacity Connectors If gel cell has tabs like some Astro Flight batteries Fig Radio Shack has push-on connector can installed wire just pair pliers Id give part number change too fast just look around among blister packs ask help Molex con nectors can sometimes found auto parts stores Fig 6 shows another alterna tive Concepts Unlimited 36C Carlough Place Bohemia NY 11716 distributing Anderson Power Products kit shown connectors mate Gelyte battery distributed CU UL Canadian standard certified contacts wipe together recommen ded both battery manufacturers shells color coded keyed sides can assemble just about kind special plug might want Use substitutes wire nuts installing electrical fixtures local wiring code permits simplify job lot No holding up fixture hand try turn wire nut other also work well making connections car like CB cuss cuss stereo See dealer first What else can tell about gel cells Keep cool operate range 40nF 140F trunk car gets up l40F hot sun temperature hastens self-discharge kinds batteries Gel cells rated 20-hour rate reason yield greatest ca pacity rate starter motor draws lot short time dont worry about Charge gel cell soon get because theres no way knowing left factory fully charged stored interim Capacity will crease during first few charge/dis charge cycles gel cell considered expended its available capacity measured 20-hour rate C/20 ps 6-amp-hour pack drops half its original value George M Myers 70 Froehlich Farm Rd Hicks yule NY 1180] Agrivation/Haught continued page 18 thoroughly Fit center ribs cutting out sec tions needed Install leading edge sheet ing center-section planking Shape sheet wing tips shown typical sec tion Cap tops ribs 2 strips Sand wing structure rounding lead ing trailing edge members final shape Cut ailerons trailing edge stock sand shape Install 3/32 wire horns Klett AB-4 bearings hinge wing Horns should bent forward shown insure up aileron travel down necessary insure smooth entry turns high lifting airfoil Fabricate plywood servo doubler fit servo used install shown Cut out planking accommodate servo Standard Du-Bro aileron linkage recom mended completes basic structure Give components final sanding proceed favorite covering finishing procedure iron-on coverings satis factory prefer traditional methods suggest fabric wings either ironed-on Coverite doped-on silk Silron doped-on Silkspan over bare wood parts Silkspan easily applied 75% thinner-25% dope mixture brushed through paper after preparing wood application two coats clear dope 84 Model Aviation 4 NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM ~LYLINE utlsi,tOnp,hO upRa,au,nAiid 2345RPRAdRI , EXiRla i,,,5 Run n2X p.$1295 XuXflb. PXR, Sig StO IXAL XiApe9 flIZhi XR5A P,r,XX Send 254 catalog See dealer oIl FLYLINEa cloaaic kita NOW FLYLINE MODELS INC 031 5734335 HEINKEL 1000 ninsata RAXR * flX3 RfRXR, XAA, PAR Rlii33XSIXOiPRX2X P32 Flu, PAhiin 12
Edition: Model Aviation - 1978/07
Page Numbers: 8, 9, 10, 11, 82, 83, 84
ONE OF THE things modelers have al ways dreamed big beautiful scale model Picture example onethird life-size Stearman sailing overhead Sunlight sparkles off huge wings steadily spinning prop big biplane pulls up gracefully completes loop rolls majestically dream longer day big model has fi nally arrived always few people felt achieve dreams cost Bill Bertrand often heard comments -scale Fokker D-VII flights highlights Nats Ed Morgan Las Vegas flying nine-foot J-3 Cub engine made out two McCoy 60s us thought plane Torpedo 45 monster Everyone enthralled big birds far out reach average modeler machine work modify engines insurmountable task designing own airplane anything go structural tech nique flight dynamic requirements usable materials mention poor reliabil ity radios time too much supermen changed now Nine-foot J-3s Champs Citabrias becoming almost commonplace far-out designs popping up over catalyst explosion arrival mar ket really big bolt-in engines re quire no work other model engine get run have lifting power Atlas biggest problem has always lack power Regardless what some people have preached nine-foot airplane 60 power does have gener ally acceptable performance can done isnt good enough day fun big OS 80 struggled As big Ed Morgans Custom van Tom Bunkers huge Learliner displayed Morgan Pat Bunker powered two pusher 60s rear nacelles About make some adjustments big white jet Tom Bunker seems praying Manitou 8 Model Aviation Floppy-hatted Bob Haight expert pilot Pfalz Bob Mickelsen WW-l fighter powered convered Cox chain-saw engine Right told Dicture Pfalz real thing Western Front wed bet youd buy it isnt birds about two years ago things started fall place Radios developed point no longer limiting factor Really good builders pilots becoming bored same old sized models everyone has building years Competition de veloped point superdedicated bad chance winning People started remembering spar kling daydreams asking themselves scene appeared Ron Shettler quietly saying marketing 20 cid converted chain-saw engine especially adapted model use called Quadra say Ron vision ary would have stretched point Everyone sneered idea men tioned said Yeah Suurre few people tried Quadra liked big-airplane movement got off ground Manufacturers actually started making products intended mon sters Suddenly Quarter-Scale bigEd Morgan readies Mooney Mite its fateful last flight much time expense invested monster big-model pilot becomes orderly well-disciplined operator Right Size makes detailing easier Mites cockpit complete keys ignition Lee Taylors Quadra engine completely fills firewall Nosen Champion its sound life-like Although big powerful Quadra economical its gas-and-oil mixture ger arrived New very good engines made appearance real announcement birth Quarter-Scale came last year Las Vegas Eddie Morgan brought dream lifetime fruition first-annual Quarter-Scale National FlyIn little advertising 32 monster models over 100 modelers showed up form Quarter-Scale Association America later Most appealing diversity en gines becoming available range way some newer little 60s earning reputa tion being excellent luggers lighter biggies up through 80s 90s 1 4s 15s finally Shettlers big 20 cid Quadra course exactly cheap Prices start $50 uncon verted industrial engine go rapidly up Most follow standard glow engine concept some converted indus trial engines some like Quadra retain ignition such industrial en gines Several manufacturers have come out reduction drives allow standard proven 60s swing much bigger prop Large propellers available quite reasonable prices Wheels hardware new accessory products showing up fast hard keep up just exactly what avail able general monster scale has arrived course being new baby man about become firsttime parent faced whole new set bewildering problems techniques has learned past need modified gotten new ones learned What ma terials use What strong enough Can find cheaper way ing What engine will work best model want God turkey going weigh 25 pounds Once serious work begins almost unanimous reaction panicky call help no way per son can take upon himself answer questions everyone has concerning models size will attempt de scribe what think good way go see two major problems almost has faced starting big birds First course what will work building Second very important pilot ability big birds fly very very well also fly quite differently regular models little thought practice beforehand will save some anxious moments air can stand waiting just little before starting big bird have method will save some grief long run Buy Sig J-3 Cub kitthe long-wing original Hazels clippedwing build Mentally make ninefooter out take time study construction go think vari ous ways might change things strengthen Think 10 Model Aviation Paul Sims beautiful modified Nosen Champion powered K&B 61 pumper essen tial consideration projecting biggie landing gear really absorb heavy impacts Little Chrissy Calmy proud grandaddys Fleet biplaneas no doubt Stan Design executed feeling shows through Wonder Chrissy will remember Frank Comys Fokker Eindecker feaiurs mu triai engine cable-actuated wing warping aileron control swiveling pilots head would like rig wires terms thin plywood instead balsa Cub designed years ago Its construction very similar what used biggies can visual ize problem areas might crop up later biggie example look closely kit analyze might see corner longerons balsa ex posed bumps bangs Wouldnt better made small hardwood dowel might break easily what about wing strut attachment Sure good enough plane flew virtually free flight 09 will stand up stresses modern-day engine pulling through snap rolls spins cabin structure looks flimsy windows make very little structure hold wing fuselage Dowels spliced window posts running way up wing root area down fuselage tie everything together will add immeasurably strength tubing structure windshield can made out wire running down deep corners help tie front cabin together helping lot struc tural rigidity forward section quick reminder As ing experimental building little J-3 sure mentally blow up monster size Get used thinking about what kind forces strengths shortly will dealing Remember will no longer dealing just fairly moderate forces engines will use put out fearsome power big heavy get much metal charging up down cylinder swinging 16 18 20 props vibra tions stresses no longer something simple balsawood model cement can handle have start thinking about structure can designed help out once arent going worrying much about weight least nose Cover model silk doublecovered Silkspan Get used idea building covering model again rather just wrapping up like pack age plastic wrap bigger birds little J-3 also designed covering mind add structural strength rigidity plastic films use big gie going lose great deal strength designed model As doing covering paint ing aware what doing point can really pile pounds become sloppy point get good finish hare minimum number coats Start structure very well finished bumps dents will need fill later lead putty Put covering smoothly evenly taking time pull out wrinkles smooth out seams little extra time will save hours sanding filling importantly pounds weight What brush stroke Cub model will bottle paint biggie Practice doing things right first time dont have worry about repairing goofs later Plan powering plane good 19 25 1 can recommend either OS 25 Fox 25 use power you will negate training aspects bird Use full 4-channel radio normal controls Stick parachute drop fun Now comes fun part some hardest work must learn fly beast Remember stick controls rudder Yeah use steering ground have always forgotten about once air now cannot forget about air going become just important elevator important ailerons Yep will have learn fly both sticks time built little J-3 excellent trainer purpose Continued page 82 July1978 11 say bgplane bug bit Tom Bunker putting mildly camera just caught him magic moment releases Nosen Citabria hand fin line up Las Vegas WW-1 squadron R Bob Haight Pfalz Tom Mahon Fokker D-VII Ernie Muller D-V II Frank Comyn Eindecker size flying site worth noting ambroid Dont give good old days model buildingI like whats around today Dick Henderson Phoenix AZ Thinking Big/Taylor continued page 71 bird flies rather poorly dont properly will start learn about taildraggers nice gentle landings Any other kind will get much trouble little bird muffed landing will bruise ego assum ing did beefing up talked about earlier biggies 15-30 pounds crashing ground will bend something major blow land ing something minor noseup becomes catastrophe biggie big props cost minimum $4 friend wiped out $36 worth props making two flights Ill tell little secret have used several years will learn wheel-land 1-3 will use knowledge biggies landings will much less sweaty proposition use standard full-stall touch-down Reason full-stall land ing control lost moment stall hopefully exact same instant wheels hit ground timing doesnt happen rare does left bird ticklish atti tude out control no airspeed really super pilot can sometimes recover situation Mostly poor plane its own flop down way can will wheel-land bird plane literally flown down ground Air speed maintained way through touch-down through initial part roll-out Therefore should things get out whack last second still have some airspeed bank can use speed give ex tra edge get out trouble Im say ing now can get out situa tion still have have cool head least have little something ex tra work secret good wheel landing little extra airspeed Carry airspeed right down flare instead try ing hold plane off concentrate getting level attitude just about inch off ground other words stead flaring just break glide ground level Now comes scary part need skill plane one-inch altitude level attitude tap about quarter-inch down ele vator hold until plane loses fly ing speed everything works out right plane will just gently tap its wheels down down elevator will glue onto runway As speed drops off come back easily full up elevator avoid nosing over Practice maneuver over over Cub skills developed will stand good stead rest flying career Fail people get serious taildrag gers especially biggies will spend time repairing flying fullstall landing airplane killer Thats full-scale flying perfect threepoint landing considered beautiful darned hard wheel landing much safer tail-high rollout thing turns crowds OK youve built little learning about basic techniques type model Youve mentally prepared self engineering beef required powerful biggie flying beautiful time show up field buddies put away planes shame youre hot trot What going build Im afraid tlat have turn loose So far just arent kits available few plans very few actually designed kind power will using As matter fact three sets plans currently available specifically de signed big engines know Andy Shebers Pitts Special Kraft Super-Fli plans available both A-scale Jim Follines Y4-scale Quadra-designed PT-19 Jims plans available Andys address end article kits plans way Im sure Im going taken task time printed right now products specific new powerplants have seen almost Nosen kits am flying heavily-modified Nosen Champ very good starting points anyone However advised Buds kits designed fly maximum 80 engine doesnt put out power good Schnuerle 60 consequently very light construction kind power now norm fly very well good basic kits require considerable beefing-up some outright redesign big engines Since almost everyone starts Buds kits will go out limb men tion some things have done flying models bigger powerplants First off Nosen planes have wing struts design inadequate big engines just about single important change can make struts virtually take full load airplane Redesign mind Metal fittings strut end bolted strong metal tach points both wing fuselage way go struts have metal cable shackle ends tied together c wire running length struts little overkill have no compunction about snap-rolling spinning 18-lb bird Second would well advised re place fuselage longerons /4 hardwood dowel balsawood structure just wont take banging heavier birds invariably get repairing major project nose area isnt too bad still needs can stiffen up Look over carefully wood supplied section replace soft pieces wood good hard density bird covered inside out layer 8-oz fiberglass back rear landing gear outside Since cut out door make operational stiffened cabin area replace strength lost mod biggest things did imbed 1/8 wire door win dow posts make forward pipe structure windshild brass tub ing wire splice pieces soldered joints ends tied heavily structure latter mod alone greatly stiffened up nose-cabin-wing area landing gear has have some pro vision flexing As designed almost totally rigid Since gear cant flex hard landing will bend something wheels alone arent sufficient ab sorb shock something havent fully cured yet several solutions work still ultimate have leave just make some modification have some flex gear dont like acetate windows trip local plastics store Taps Plastics will net l/l6 plexiglass Careful cutting RC-56 glue will get some very nice windows scale thickness pick up some very thick acetate butyrate sheet 040 thereabouts front windshield Use RC-56 glue also Now engine choice area can really cause howls cause isnt anyone know really has broad experience have Quadra access 15 cid Moki have seen DuBro belt drive run plane Therefore advised what am about say open controversy have modeling business 82 Model Aviation prnlrn INDUSTRIES INC 7060 HOIIywc.. .,. .. te think ideas valid general two types en gines available today glow engines follow standard modeling layout converted industrial en gines Im going out limb make two statements First glow engines follow stand ard model design much different engines have grown know love just bigger what have seen very power ful swing big props scream best suited smaller biggies ones modern faster planes no reason can used older bigger planes dont match character planes very light biggies such Nosen J-3 Champ will satisfactory smaller glow engines such Webra 90 reduction drive units several Really good 60s give solid extremely scale-like performance planes keeping mind real planes en gines also howled out guts fly Most people will opt something provides little extra spare bigger glow engines usable lighter biggies home something like Nosen Citabria Pitts would very interested see would perform something like Nosens new Mustang kind plane performance designed howling high speed secondly come pkce de resistance Quadra class big hulking monster prop-swingers Quadra can used virtually air plane home plane matches its own bulk such Nosen Mr Mulligan 1/3rd Pitts impressive sights have seen Jim Jacobsons 23-lb Mr Mulligan taking off its maiden flight big Quadra growling away up front airplane rolled about 75 feet pointed its snout up about 300 angle just scratched clawed its way growling sky wasnt real speed just awe some feeling power closest com parison can make 3000-hp Bearcat snarling away Reno runway kind bird Quadra born sounds good have Quadra Champ flies plane very well However en gine completely fills firewall cowling slightly oversize scale engines would better match just dont have class engines havent mentioned new multi-cylinder engines have seen Hargrave Radials offered Model Builder magazine have seen multi-cylinder engines run Opinion dont think engines going adaptable size models total displacement huge shudder think sticking $1000 front airplane Hargrave way gorgeous piece work Now Im going talk briefly about something has become near dear Quarter-Scale Asso ciation America group formed first Las Vegas National Fly-In last October devoted building flying Quarter-Scale very large models believe huge model built unique special unto itself therefore competition between would sacrilege Competition automatically implies rules rules restrictive dont want restrictions what beasts Basically bunch rugged individualists wish build what want want to get together others share joy achievements pick others brains dont want efforts mally judged because us winner minds primary purpose provide rallying point anyone interested can get information share has want get together fly-ins QS picnics barbeques have blast biggies enjoy company July1978 83 WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities R/C construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH US. SUBSCRIBE NOW AND GET 3 FREE ISSUES Fill out send coupon check Money Order year subscription $1600 will re ceive 3 additional FREE ISSUES total savings $750 Mail MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v33][b116127901210930]] REGULAR SUBSCRIPTION IS Name __________________________________________ $1500 SUBSCRIBE NOW AND Address ____________________________________________ SAVE $750! RECEIVE 15 ISSUESATONE-THIRDOFF! City __________________State ________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount other guys like us newsletter being published rapidly growing mini-magazine concentrates type information darned hard come interested QSAA send double-stamped large self-addressed envelope Ill send copy first newsletter Remember Big Beautiful QSAA motto SOME SUPPLY SOURCES Kits 3-3 Champ Citabria Mr Mulligan several others Bud Nosen Models PO Bos 105 Two Harbors MN 55616 Several WWl types Aerotec Model Engineering Co Box 116 Lincoindale NY 10540 Engines Quadra 20 cid converted chain-sass engine ignition Most hobby sbops can order Fine Star Specialties 3125 wilkins way Carmichael CA 95608 EWH Specialties Inc. 607 E Abrams Suite 410 Arlington TX 76010 MRCSuevia 25cc 15 cid glo Schenerle ported Most bobby shops can order MRC 2500 woodbridge Ave. Edison NJ 08817 MOKI 25cc glow Most hobby shops can order imported Polks Hobbies Five Star Specialties Isee address above Webra 90 05 80 Fox 78 Pro6 76 order through hobby sbops Plans parts Specifically designed large engines -also parts accessories Quadra engines accessories 1/3rd Pitts & Kraft Super-Fli Big Arts Models 20620 Emmett Taylor MI 48180 33 Cuh 90 PBY Stinson Vovoger others Sid Morgau Plans 13157 Ormond Belleville MI 48111 Fairchild PT19 spec6cally Quadra Jim Folline Lee Taylor 329 C St Roseville CA 95678 Curtiss Hawk PhE Stinsor Reliant 5R9 Barronss Scale Classics 1213 Holly Spring Lane Grand Blanc MI 48439 Bob Holmar Plans PO Box 714S San Bernardino C 2 Old Time Plan Sers Jobe Pond PO Bus 3113 San Jose CA 9556 Lee Taylor 329 C St Roseville CA 95678 RC Technique/Myers continued page 13 can operated position Jerry Jarvis MEN has hint car boat helicopter drivers re gard limiting maximum current drawn Add flywheel starter spin up starter before engaging belt flywheel will store up some energy will give internal combustion motor just time peak energy demand takes some strain off battery gives stronger starting jolt Storage Gel cells store well Ive telling recharge nickle-cad mium batteries once month whether use Vince Calouri Boe ing Hawks told just last month talk given Hawks Boeing bat tery expert name carelessly got write down rate mes sage Put little load battery just before recharge optimum results Exercising RC system few minutes will sufficient re charge Now back gel cells Stored room temperature fully charged gel cell will drop half its capacity about nine months Thats pretty good So recharge stored gel cells twice year whether use Failure keep fully charged leads sulfation plates permanently reduces battery capacity Connectors If gel cell has tabs like some Astro Flight batteries Fig Radio Shack has push-on connector can installed wire just pair pliers Id give part number change too fast just look around among blister packs ask help Molex con nectors can sometimes found auto parts stores Fig 6 shows another alterna tive Concepts Unlimited 36C Carlough Place Bohemia NY 11716 distributing Anderson Power Products kit shown connectors mate Gelyte battery distributed CU UL Canadian standard certified contacts wipe together recommen ded both battery manufacturers shells color coded keyed sides can assemble just about kind special plug might want Use substitutes wire nuts installing electrical fixtures local wiring code permits simplify job lot No holding up fixture hand try turn wire nut other also work well making connections car like CB cuss cuss stereo See dealer first What else can tell about gel cells Keep cool operate range 40nF 140F trunk car gets up l40F hot sun temperature hastens self-discharge kinds batteries Gel cells rated 20-hour rate reason yield greatest ca pacity rate starter motor draws lot short time dont worry about Charge gel cell soon get because theres no way knowing left factory fully charged stored interim Capacity will crease during first few charge/dis charge cycles gel cell considered expended its available capacity measured 20-hour rate C/20 ps 6-amp-hour pack drops half its original value George M Myers 70 Froehlich Farm Rd Hicks yule NY 1180] Agrivation/Haught continued page 18 thoroughly Fit center ribs cutting out sec tions needed Install leading edge sheet ing center-section planking Shape sheet wing tips shown typical sec tion Cap tops ribs 2 strips Sand wing structure rounding lead ing trailing edge members final shape Cut ailerons trailing edge stock sand shape Install 3/32 wire horns Klett AB-4 bearings hinge wing Horns should bent forward shown insure up aileron travel down necessary insure smooth entry turns high lifting airfoil Fabricate plywood servo doubler fit servo used install shown Cut out planking accommodate servo Standard Du-Bro aileron linkage recom mended completes basic structure Give components final sanding proceed favorite covering finishing procedure iron-on coverings satis factory prefer traditional methods suggest fabric wings either ironed-on Coverite doped-on silk Silron doped-on Silkspan over bare wood parts Silkspan easily applied 75% thinner-25% dope mixture brushed through paper after preparing wood application two coats clear dope 84 Model Aviation 4 NE3Y KITS OF WORLD CLASSIC AIRCRAFT FROM ~LYLINE utlsi,tOnp,hO upRa,au,nAiid 2345RPRAdRI , EXiRla i,,,5 Run n2X p.$1295 XuXflb. PXR, Sig StO IXAL XiApe9 flIZhi XR5A P,r,XX Send 254 catalog See dealer oIl FLYLINEa cloaaic kita NOW FLYLINE MODELS INC 031 5734335 HEINKEL 1000 ninsata RAXR * flX3 RfRXR, XAA, PAR Rlii33XSIXOiPRX2X P32 Flu, PAhiin 12
Edition: Model Aviation - 1978/07
Page Numbers: 8, 9, 10, 11, 82, 83, 84
ONE OF THE things modelers have al ways dreamed big beautiful scale model Picture example onethird life-size Stearman sailing overhead Sunlight sparkles off huge wings steadily spinning prop big biplane pulls up gracefully completes loop rolls majestically dream longer day big model has fi nally arrived always few people felt achieve dreams cost Bill Bertrand often heard comments -scale Fokker D-VII flights highlights Nats Ed Morgan Las Vegas flying nine-foot J-3 Cub engine made out two McCoy 60s us thought plane Torpedo 45 monster Everyone enthralled big birds far out reach average modeler machine work modify engines insurmountable task designing own airplane anything go structural tech nique flight dynamic requirements usable materials mention poor reliabil ity radios time too much supermen changed now Nine-foot J-3s Champs Citabrias becoming almost commonplace far-out designs popping up over catalyst explosion arrival mar ket really big bolt-in engines re quire no work other model engine get run have lifting power Atlas biggest problem has always lack power Regardless what some people have preached nine-foot airplane 60 power does have gener ally acceptable performance can done isnt good enough day fun big OS 80 struggled As big Ed Morgans Custom van Tom Bunkers huge Learliner displayed Morgan Pat Bunker powered two pusher 60s rear nacelles About make some adjustments big white jet Tom Bunker seems praying Manitou 8 Model Aviation Floppy-hatted Bob Haight expert pilot Pfalz Bob Mickelsen WW-l fighter powered convered Cox chain-saw engine Right told Dicture Pfalz real thing Western Front wed bet youd buy it isnt birds about two years ago things started fall place Radios developed point no longer limiting factor Really good builders pilots becoming bored same old sized models everyone has building years Competition de veloped point superdedicated bad chance winning People started remembering spar kling daydreams asking themselves scene appeared Ron Shettler quietly saying marketing 20 cid converted chain-saw engine especially adapted model use called Quadra say Ron vision ary would have stretched point Everyone sneered idea men tioned said Yeah Suurre few people tried Quadra liked big-airplane movement got off ground Manufacturers actually started making products intended mon sters Suddenly Quarter-Scale bigEd Morgan readies Mooney Mite its fateful last flight much time expense invested monster big-model pilot becomes orderly well-disciplined operator Right Size makes detailing easier Mites cockpit complete keys ignition Lee Taylors Quadra engine completely fills firewall Nosen Champion its sound life-like Although big powerful Quadra economical its gas-and-oil mixture ger arrived New very good engines made appearance real announcement birth Quarter-Scale came last year Las Vegas Eddie Morgan brought dream lifetime fruition first-annual Quarter-Scale National FlyIn little advertising 32 monster models over 100 modelers showed up form Quarter-Scale Association America later Most appealing diversity en gines becoming available range way some newer little 60s earning reputa tion being excellent luggers lighter biggies up through 80s 90s 1 4s 15s finally Shettlers big 20 cid Quadra course exactly cheap Prices start $50 uncon verted industrial engine go rapidly up Most follow standard glow engine concept some converted indus trial engines some like Quadra retain ignition such industrial en gines Several manufacturers have come out reduction drives allow standard proven 60s swing much bigger prop Large propellers available quite reasonable prices Wheels hardware new accessory products showing up fast hard keep up just exactly what avail able general monster scale has arrived course being new baby man about become firsttime parent faced whole new set bewildering problems techniques has learned past need modified gotten new ones learned What ma terials use What strong enough Can find cheaper way ing What engine will work best model want God turkey going weigh 25 pounds Once serious work begins almost unanimous reaction panicky call help no way per son can take upon himself answer questions everyone has concerning models size will attempt de scribe what think good way go see two major problems almost has faced starting big birds First course what will work building Second very important pilot ability big birds fly very very well also fly quite differently regular models little thought practice beforehand will save some anxious moments air can stand waiting just little before starting big bird have method will save some grief long run Buy Sig J-3 Cub kitthe long-wing original Hazels clippedwing build Mentally make ninefooter out take time study construction go think vari ous ways might change things strengthen Think 10 Model Aviation Paul Sims beautiful modified Nosen Champion powered K&B 61 pumper essen tial consideration projecting biggie landing gear really absorb heavy impacts Little Chrissy Calmy proud grandaddys Fleet biplaneas no doubt Stan Design executed feeling shows through Wonder Chrissy will remember Frank Comys Fokker Eindecker feaiurs mu triai engine cable-actuated wing warping aileron control swiveling pilots head would like rig wires terms thin plywood instead balsa Cub designed years ago Its construction very similar what used biggies can visual ize problem areas might crop up later biggie example look closely kit analyze might see corner longerons balsa ex posed bumps bangs Wouldnt better made small hardwood dowel might break easily what about wing strut attachment Sure good enough plane flew virtually free flight 09 will stand up stresses modern-day engine pulling through snap rolls spins cabin structure looks flimsy windows make very little structure hold wing fuselage Dowels spliced window posts running way up wing root area down fuselage tie everything together will add immeasurably strength tubing structure windshield can made out wire running down deep corners help tie front cabin together helping lot struc tural rigidity forward section quick reminder As ing experimental building little J-3 sure mentally blow up monster size Get used thinking about what kind forces strengths shortly will dealing Remember will no longer dealing just fairly moderate forces engines will use put out fearsome power big heavy get much metal charging up down cylinder swinging 16 18 20 props vibra tions stresses no longer something simple balsawood model cement can handle have start thinking about structure can designed help out once arent going worrying much about weight least nose Cover model silk doublecovered Silkspan Get used idea building covering model again rather just wrapping up like pack age plastic wrap bigger birds little J-3 also designed covering mind add structural strength rigidity plastic films use big gie going lose great deal strength designed model As doing covering paint ing aware what doing point can really pile pounds become sloppy point get good finish hare minimum number coats Start structure very well finished bumps dents will need fill later lead putty Put covering smoothly evenly taking time pull out wrinkles smooth out seams little extra time will save hours sanding filling importantly pounds weight What brush stroke Cub model will bottle paint biggie Practice doing things right first time dont have worry about repairing goofs later Plan powering plane good 19 25 1 can recommend either OS 25 Fox 25 use power you will negate training aspects bird Use full 4-channel radio normal controls Stick parachute drop fun Now comes fun part some hardest work must learn fly beast Remember stick controls rudder Yeah use steering ground have always forgotten about once air now cannot forget about air going become just important elevator important ailerons Yep will have learn fly both sticks time built little J-3 excellent trainer purpose Continued page 82 July1978 11 say bgplane bug bit Tom Bunker putting mildly camera just caught him magic moment releases Nosen Citabria hand fin line up Las Vegas WW-1 squadron R Bob Haight Pfalz Tom Mahon Fokker D-VII Ernie Muller D-V II Frank Comyn Eindecker size flying site worth noting ambroid Dont give good old days model buildingI like whats around today Dick Henderson Phoenix AZ Thinking Big/Taylor continued page 71 bird flies rather poorly dont properly will start learn about taildraggers nice gentle landings Any other kind will get much trouble little bird muffed landing will bruise ego assum ing did beefing up talked about earlier biggies 15-30 pounds crashing ground will bend something major blow land ing something minor noseup becomes catastrophe biggie big props cost minimum $4 friend wiped out $36 worth props making two flights Ill tell little secret have used several years will learn wheel-land 1-3 will use knowledge biggies landings will much less sweaty proposition use standard full-stall touch-down Reason full-stall land ing control lost moment stall hopefully exact same instant wheels hit ground timing doesnt happen rare does left bird ticklish atti tude out control no airspeed really super pilot can sometimes recover situation Mostly poor plane its own flop down way can will wheel-land bird plane literally flown down ground Air speed maintained way through touch-down through initial part roll-out Therefore should things get out whack last second still have some airspeed bank can use speed give ex tra edge get out trouble Im say ing now can get out situa tion still have have cool head least have little something ex tra work secret good wheel landing little extra airspeed Carry airspeed right down flare instead try ing hold plane off concentrate getting level attitude just about inch off ground other words stead flaring just break glide ground level Now comes scary part need skill plane one-inch altitude level attitude tap about quarter-inch down ele vator hold until plane loses fly ing speed everything works out right plane will just gently tap its wheels down down elevator will glue onto runway As speed drops off come back easily full up elevator avoid nosing over Practice maneuver over over Cub skills developed will stand good stead rest flying career Fail people get serious taildrag gers especially biggies will spend time repairing flying fullstall landing airplane killer Thats full-scale flying perfect threepoint landing considered beautiful darned hard wheel landing much safer tail-high rollout thing turns crowds OK youve built little learning about basic techniques type model Youve mentally prepared self engineering beef required powerful biggie flying beautiful time show up field buddies put away planes shame youre hot trot What going build Im afraid tlat have turn loose So far just arent kits available few plans very few actually designed kind power will using As matter fact three sets plans currently available specifically de signed big engines know Andy Shebers Pitts Special Kraft Super-Fli plans available both A-scale Jim Follines Y4-scale Quadra-designed PT-19 Jims plans available Andys address end article kits plans way Im sure Im going taken task time printed right now products specific new powerplants have seen almost Nosen kits am flying heavily-modified Nosen Champ very good starting points anyone However advised Buds kits designed fly maximum 80 engine doesnt put out power good Schnuerle 60 consequently very light construction kind power now norm fly very well good basic kits require considerable beefing-up some outright redesign big engines Since almost everyone starts Buds kits will go out limb men tion some things have done flying models bigger powerplants First off Nosen planes have wing struts design inadequate big engines just about single important change can make struts virtually take full load airplane Redesign mind Metal fittings strut end bolted strong metal tach points both wing fuselage way go struts have metal cable shackle ends tied together c wire running length struts little overkill have no compunction about snap-rolling spinning 18-lb bird Second would well advised re place fuselage longerons /4 hardwood dowel balsawood structure just wont take banging heavier birds invariably get repairing major project nose area isnt too bad still needs can stiffen up Look over carefully wood supplied section replace soft pieces wood good hard density bird covered inside out layer 8-oz fiberglass back rear landing gear outside Since cut out door make operational stiffened cabin area replace strength lost mod biggest things did imbed 1/8 wire door win dow posts make forward pipe structure windshild brass tub ing wire splice pieces soldered joints ends tied heavily structure latter mod alone greatly stiffened up nose-cabin-wing area landing gear has have some pro vision flexing As designed almost totally rigid Since gear cant flex hard landing will bend something wheels alone arent sufficient ab sorb shock something havent fully cured yet several solutions work still ultimate have leave just make some modification have some flex gear dont like acetate windows trip local plastics store Taps Plastics will net l/l6 plexiglass Careful cutting RC-56 glue will get some very nice windows scale thickness pick up some very thick acetate butyrate sheet 040 thereabouts front windshield Use RC-56 glue also Now engine choice area can really cause howls cause isnt anyone know really has broad experience have Quadra access 15 cid Moki have seen DuBro belt drive run plane Therefore advised what am about say open controversy have modeling business 82 Model Aviation prnlrn INDUSTRIES INC 7060 HOIIywc.. .,. .. te think ideas valid general two types en gines available today glow engines follow standard modeling layout converted industrial en gines Im going out limb make two statements First glow engines follow stand ard model design much different engines have grown know love just bigger what have seen very power ful swing big props scream best suited smaller biggies ones modern faster planes no reason can used older bigger planes dont match character planes very light biggies such Nosen J-3 Champ will satisfactory smaller glow engines such Webra 90 reduction drive units several Really good 60s give solid extremely scale-like performance planes keeping mind real planes en gines also howled out guts fly Most people will opt something provides little extra spare bigger glow engines usable lighter biggies home something like Nosen Citabria Pitts would very interested see would perform something like Nosens new Mustang kind plane performance designed howling high speed secondly come pkce de resistance Quadra class big hulking monster prop-swingers Quadra can used virtually air plane home plane matches its own bulk such Nosen Mr Mulligan 1/3rd Pitts impressive sights have seen Jim Jacobsons 23-lb Mr Mulligan taking off its maiden flight big Quadra growling away up front airplane rolled about 75 feet pointed its snout up about 300 angle just scratched clawed its way growling sky wasnt real speed just awe some feeling power closest com parison can make 3000-hp Bearcat snarling away Reno runway kind bird Quadra born sounds good have Quadra Champ flies plane very well However en gine completely fills firewall cowling slightly oversize scale engines would better match just dont have class engines havent mentioned new multi-cylinder engines have seen Hargrave Radials offered Model Builder magazine have seen multi-cylinder engines run Opinion dont think engines going adaptable size models total displacement huge shudder think sticking $1000 front airplane Hargrave way gorgeous piece work Now Im going talk briefly about something has become near dear Quarter-Scale Asso ciation America group formed first Las Vegas National Fly-In last October devoted building flying Quarter-Scale very large models believe huge model built unique special unto itself therefore competition between would sacrilege Competition automatically implies rules rules restrictive dont want restrictions what beasts Basically bunch rugged individualists wish build what want want to get together others share joy achievements pick others brains dont want efforts mally judged because us winner minds primary purpose provide rallying point anyone interested can get information share has want get together fly-ins QS picnics barbeques have blast biggies enjoy company July1978 83 WERE EXPANDING CELEBRATING MODEL BUILDER substantially increasing its R/C coverage new monthly features leading modeling authorities R/C construction articles emphasis how-to . R/C oriented Because free flight control line modelers consider MODEL BUILDER best magazine will contin ue present amount coverage areas including regular Peanut plan feature means MODEL BUILDER must enlarge physically pages doing CELEBRATE WITH US. SUBSCRIBE NOW AND GET 3 FREE ISSUES Fill out send coupon check Money Order year subscription $1600 will re ceive 3 additional FREE ISSUES total savings $750 Mail MODEL BUILDER Magazine 621 West 19th St Costa Mesa Calif 92627 [v33][b116127901210930]] REGULAR SUBSCRIPTION IS Name __________________________________________ $1500 SUBSCRIBE NOW AND Address ____________________________________________ SAVE $750! RECEIVE 15 ISSUESATONE-THIRDOFF! City __________________State ________ Zip NOTE This offer new subscribers NOT subject additional AMA membership discount other guys like us newsletter being published rapidly growing mini-magazine concentrates type information darned hard come interested QSAA send double-stamped large self-addressed envelope Ill send copy first newsletter Remember Big Beautiful QSAA motto SOME SUPPLY SOURCES Kits 3-3 Champ Citabria Mr Mulligan several others Bud Nosen Models PO Bos 105 Two Harbors MN 55616 Several WWl types Aerotec Model Engineering Co Box 116 Lincoindale NY 10540 Engines Quadra 20 cid converted chain-sass engine ignition Most hobby sbops can order Fine Star Specialties 3125 wilkins way Carmichael CA 95608 EWH Specialties Inc. 607 E Abrams Suite 410 Arlington TX 76010 MRCSuevia 25cc 15 cid glo Schenerle ported Most bobby shops can order MRC 2500 woodbridge Ave. Edison NJ 08817 MOKI 25cc glow Most hobby shops can order imported Polks Hobbies Five Star Specialties Isee address above Webra 90 05 80 Fox 78 Pro6 76 order through hobby sbops Plans parts Specifically designed large engines -also parts accessories Quadra engines accessories 1/3rd Pitts & Kraft Super-Fli Big Arts Models 20620 Emmett Taylor MI 48180 33 Cuh 90 PBY Stinson Vovoger others Sid Morgau Plans 13157 Ormond Belleville MI 48111 Fairchild PT19 spec6cally Quadra Jim Folline Lee Taylor 329 C St Roseville CA 95678 Curtiss Hawk PhE Stinsor Reliant 5R9 Barronss Scale Classics 1213 Holly Spring Lane Grand Blanc MI 48439 Bob Holmar Plans PO Box 714S San Bernardino C 2 Old Time Plan Sers Jobe Pond PO Bus 3113 San Jose CA 9556 Lee Taylor 329 C St Roseville CA 95678 RC Technique/Myers continued page 13 can operated position Jerry Jarvis MEN has hint car boat helicopter drivers re gard limiting maximum current drawn Add flywheel starter spin up starter before engaging belt flywheel will store up some energy will give internal combustion motor just time peak energy demand takes some strain off battery gives stronger starting jolt Storage Gel cells store well Ive telling recharge nickle-cad mium batteries once month whether use Vince Calouri Boe ing Hawks told just last month talk given Hawks Boeing bat tery expert name carelessly got write down rate mes sage Put little load battery just before recharge optimum results Exercising RC system few minutes will sufficient re charge Now back gel cells Stored room temperature fully charged gel cell will drop half its capacity about nine months Thats pretty good So recharge stored gel cells twice year whether use Failure keep fully charged leads sulfation plates permanently reduces battery capacity Connectors If gel cell has tabs like some Astro Flight batteries Fig Radio Shack has push-on connector can installed wire just pair pliers Id give part number change too fast just look around among blister packs ask help Molex con nectors can sometimes found auto parts stores Fig 6 shows another alterna tive Concepts Unlimited 36C Carlough Place Bohemia NY 11716 distributing Anderson Power Products kit shown connectors mate Gelyte battery distributed CU UL Canadian standard certified contacts wipe together recommen ded both battery manufacturers shells color coded keyed sides can assemble just about kind special plug might want Use substitutes wire nuts installing electrical fixtures local wiring code permits simplify job lot No holding up fixture hand try turn wire nut other also work well making connections car like CB cuss cuss stereo See dealer first What else can tell about gel cells Keep cool operate range 40nF 140F trunk car gets up l40F hot sun temperature hastens self-discharge kinds batteries Gel cells rated 20-hour rate reason yield greatest ca pacity rate starter motor draws lot short time dont worry about Charge gel cell soon get because theres no way knowing left factory fully charged stored interim Capacity will crease during first few charge/dis charge cycles gel cell considered expended its available capacity measured 20-hour rate C/20 ps 6-amp-hour pack drops half its original value George M Myers 70 Froehlich Farm Rd Hicks yule NY 1180] Agrivation/Haught continued page 18 thoroughly Fit center ribs cutting out sec tions needed Install leading edge sheet ing center-section planking Shape sheet wing tips shown typical sec tion Cap tops ribs 2 strips Sand wing structure rounding lead ing trailing edge members final shape Cut ailerons trailing edge stock sand shape Install 3/32 wire horns Klett AB-4 bearings hinge wing Horns should bent forward shown insure up aileron travel down necessary insure smooth entry turns high lifting airfoil Fabricate plywood servo doubler fit servo used install shown Cut out planking accommodate servo Standard Du-Bro aileron linkage recom mended completes basic structure Give components final sanding proceed favorite covering finishing procedure iron-on coverings satis factory prefer traditional methods suggest fabric wings either ironed-on Coverite doped-on silk Silron 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