Radio Control Scale Bob & Dolly Wischer DESIGNING SCALE MODELS profusion Scale kits presently avail able would modeler want design own airplane Reasons plentiful may want something different hasnt done previously its reasonable estimate less half prototypes aviation history have modeled may like challenge working out problems own way modelers among innovative inventive individuals Equally important could seeking distinction producer one-of-akind some may baffle other modelers because uniqueness desire scratchbuild rare prototype could also expression dissatisfaction kits available particu larly fact some types appear half dozen kits equally attractive planes never kitted Skill knowledge patience can acquired desire necessary ingredient successful scratch-designing -building Scale modelers breed apart can amuse themselves endlessly paging through air plane books magazines viewing photo three-view drawing eye its potential model subject Given opportunity time Dennis Tapstield lives Maiaenneaa erKsnIre tnglana ana isjuauiuauiy proud two large-scale models left quarter-scale Meyers Little Toot Prototype EAA Museum tiny models span just 57 right 1936-era Chilton DW 1 builtto scale 35-in 1 ft spans 84 46 Model Aviation Three fantastic models keep turning up Toledo show top Jim Funduks F4U Corsairwith its air-operated folding wings Note high-collared ground crew servicing planes oxygen supply through open hatch lower left Joe Griffins A6M5 Zero built Royal kit modifications Finish acrylic lacquer over silkapan polyester resin Kraft 61 powers 85 lb model lower right scratch-built Ryan FR-I Fireball Bill Mikesell Design basis 3-view drawings found Historical Aviation Album its built 15-in scale features bomb-drop mechanism Rhom retracts Robert nosewheel modeler would prefer build possess airplane strikes fancy practical standpoint will need limit number what can built lifetime Further limitation imposed availability good three-view drawings photo documenta tion needed really rare combination have both drawings access prototype museum airport within reasonable distance say something less thousand miles Scale modelers save file aviation book magazine three-view crosses paths also keep list information sources outside immediate possession also helpful have drawing comparisons can made Dont assume correct three-view Use photos verifi cation necessary documentation gathered start design determining desired model size trial error methods Forget about scale inches foot Use scale ratio such 4 1 65 1 8 1 instead Also forget inch fractions measuring decimal-inch scale US industry standard dimensions compatible calcu lator Wischers latest model being built scale ratio 5647 1 Entered calcu lator constant number decimal places no consequence also need determine multiplication factor converting three-view model size Divide model wingspan threeview span result factor will entered calculator constant model dimensions henceforth Keep written record factor will used often referring three-view drawing separate sheets paper list models critical dimensions sheet possible scale ratios List multiplication factor scale ratio wingspan chord overall length cowl diameter fuselage width wheel diameter landing gear tread width wing area rough estimate weight foregoing except weight determined three-view using multiplication factor found earlier Four five scale ratio sheets laid row compared will usually indicate features limiting factors will show up too small wing area wont carry weight too large wing span wont fit car cowl doesnt contain engine muffler cowl too large models propeller unavailable wheel diameter model size compatible chosen engine shaft extension- may have used move engine rearward nose deeper Continued page 124 SUPER ATLAS 1975 World Champion Designed Wolfgang Mart its super performer can build qoickly Kit comes fiber glass lose pm-sheeted wings foam clear canopy hardware parts machine-cat sanded shape SPAN 67 AREA 740 sqin.LENGTH 59 ERG 61 PRICE $14995 BUILDERS KIT $9995 JET HAWK Ducted- Fan 404 ideal first dacted-fon airplane straight forward sport model assembles super-quick flys gteat Take aff grass fields either re tracts fined gear Uses oar Jet Pomp fan unit adapts easily other types Vs5 get nearly-as sembled airplane fo $14995 Only normal finishing materials needed complete SPAN52 1/2 550 sqie. Wi 5 1/2- 6 1/2 lbs ENG 40 PRIcE $14995 JET PUMP $4995 REVENGER-60-Size Pattern Designed Dick Russ its Sb-inch lomiear-flow mrng700 5gm ama PEVENGEg slips eagerly throagh tooghest AMA-FAI maneucers Comes highly pre-built balsa fuse assembled sanded foam wing panels stakilizers pie-sheeted sanded nertical fin rudder pm-sanded shape Just join wings stab ner rival fin install retracts engine radio coser paint youre ready compete INT5 1/4-53/4 lbs. PRICE $14995 BUILDERS KIT $9995 TIGER TAIL 111 Ron Chidgeys encellent design occomodates enclosed pipe connentional exhaust system Largelp pieassembled kit boasts same featsres described br BOOTLEGGER SPAN 67 AREA 740 sqin. LENGTH 57 ENG 61 PRICE $14995 BUILD ERS KIT $9995 BOOTLEGGER Steve Helms design enclosed tuned pipe con ventional exhaust Comes largely pre-built pm-sheeted wings fiberglass lane molded-in thrust firewall re ference lines molded pipe compartment Pie-cut plywood parts ailerons plus special hardware plans instruc rises AREA 720 sqin. SPAN 64 LENGTH 57 ERG lOne 61 PRICE $14995 BUILDERS KIT $9995 COMPENSATOR shown 1977 Masters lear-time NATS winner COM PENSATOR puts winning design concepts pour hands Comes largely preassembled milk presheeted wings stabilizemcorenfiberglass fsne. pre cut pans ailerons special hardware SPAN 64 AREA 730 sqin. LENGTH 54 ERG 60 Wi 7 3/4 5 lbs. PRICE $14995 BUILDERS KIT $9995 IOC L Did know about selection sport competition airplanes Send catalog today C $100 Local Dealer May Order Direct Send check money order EJC71 4 E FRONTON ST1 BROWNSVILLE TX 78520 512 541-3867 October 1981 47 w nuou ar MACS Show left D B Bakers 3rd-place Sopwith Camel uses 561 Notetne isminated scauu prop right John Pahiows DH 82A Tiger Moth built 25-in scale Model has 72-in wingspan weighs 11 lb has OS 80 engine HOT BLOODED 2 Secal STINSON RELIANT SR5 plan nat @ $1500 Far 60 1. Engln. U Wlnnpan 2 Full Srze sheets Drawings Consi Manual Please add 5260 Postage & Handling Pairial Kits avadattle alt oar designs. Send Cash Check Money Order RICHARD G BARRON 1213 tally SprIng Lan. Grand Blanc MIchIgan 45439 FOKKER TRIPLANE DR-i #RCOS-6 Plan Set $2495 TO Span manauvarabla flys limited area fie ds Prices tor Complete Plans Sub Assembly ano Detailed Parts Lists Add $200 Mailing Tube Send Brochure Details new designs & great thin9s come Send $100 retundablel tor intormation RC Scale/Wischers Continued page 47 ratio may have shifted slightly accom modate unwieldy feature word about calculators least expensive four-function calculator constant needed Ifone already possession worthy investment will slave turn will become its slave years drawngs made rectangular kitchen table now use 45 x 5 ft plywood sheet half table tennis top also use top work table drawing surface made 30-in wide hollow-core door solid core would expensive prefer able doors can found lumber yards slightly damaged condition low prices 30-in x 80-in $700 Drawings can made inexpensive white shelf paper 48-in wide tracing vellum vellum less likely damaged repeated erasures certain occur five-ft T-square reaches across full board width can made thin plywood edges must perfectly straight Absolute square ness necessity needs make parallel lines Other handy tools large plastic triangles compass several long ship curves shorter French curves large plastic protractor very necessary 12-in decimal-inch scale graduated 02-in increments measuring three-view scale no need conversion fractions decimals entry calculator eliminates timeconsuming errors same rule used laying out model outlines enlarged drawing Starting basic line such engine thrust line fuselage centerline fuselage top dimensions taken three-view draw ing run through calculator using multipli cation factor transferred enlarged drawing few pencil lines may have drawn three-view used reference points right angles centerline Starting point front fuselage measure back vertical lines also wing leading trailing edges stab ilizer edges tail post Plot points along original fuselage reference line large drawing measure refer ence line fuselage outline plot shape same method used obtain wing tail outlines well fuselage cross-section shapes time establish wing tail surface incidence angles, would wise inexperienced refer kit magazine draw ings Scale models data critical subject Before proceeding too far determination internal structure would also time decide locations fuel tank servos receiver battery pack battery may item could shifted later change planes balance point alternate locations should considered wing drawing look straight liner leading edge spar centerline basic reference line hinge line tail surfaces handy reference datum line mathematical method enlarging drawing produces least errors thanks calculator may sound complex actually quite rapid operation drawing can completed evening two Curved lines surface outliens can bit tricky reproduce accurately threeview draw series lines vertical basic reference line pass through curve 1 24 Model Aviation No other prop pulls biggie like Now experience filI motor potential Dynathrusts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC E ViSA C COD C CHECK C MO ee cieaier oroer dIrect DYNAThRUST PROPS INC 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 flpaIr 1/4 Scale World War #RCOS 7 Plan Set $2495 80% Wingspan 24 Cu Engines Wgt 10/c lbs w/o radio 35 channels R/C SPORT SCALE AT ITS FINES TI Its Radio Control f/A Scala STINSON RELIANT SR9 plan tat 0 Far Kiarlte typa Ragman 126 Wlngapan S Fall Sian sheets Drawings Coest Manoal Transfer large drawing proportionate locations Now measure dis tance basic line curved line points transfer dimensions dots vertical lines Connect dots ship curve French curve line will accurately reproduced coordinate method drawing curved lines Note few curved lines exist prototypes Tail surface outlines often exceptions rare elliptical wing shapes such Spitfire planes have outlines succession straight lines connected gentle curves point during design always temptation improve models flyability increasing wing area especially tips sharply tapered wing increasing stabilizer area have never found necessary models have flown scale-like manner much same prototype changes spoil true scale appearance Fuselage width another dimensions commonly altered results finished product looking like model rather real thing reasoned wing area too small slightly lower scale ratio should used add area rather changing shape After completion outlines enlarged drawing constructional details need filled High stress points areas require great est amount attention metal engine mount fastened plywood firewall common method adding strength vital area plywood should firmly cemented fuse lage structure using epoxy triangular balsa stock gusset joint 60-size engine plywood should -in thick really improve strength point use two layers -in five-ply laminated white glue Stack slightly overside layers between 3/4-in boards apply pressure C-clamps few hours Cut firewall shape laminated stock wide fuselage laminate three layers Use two three layers 3/32-in ply mount ing 40-size engines Another critical area mounting landing gear music wire gear needs securely fastened steel straps machine screws plywood mount ply tied fuselage wing gussets epoxy third high-stress point wing mount ing prefer broaden area contact between wing fuselage doublers Hard wood blocks wing drilled steel machine screws thread blind nuts plywood plates attached securely fuselage structure high-stress points possible go too far adding strength could result needless addition weight design philosophy says cant keep plane falling apart serious crash can hope protect against inter nal damage occasional inevitable hard landing Too often after crash strong joints found intact rest plane bits pieces indicating some weight could have saved full-size plane cant withstand crash either Use heavy ply hard balsa areas demand Over building can easily double planes weight could actually cause crash result merely mess larger pieces Actual construction details will depend upon modelers previous experience amount innovation can contribute model Lacking wide experience best copy ideas other designers carefully examining drawings magazines kits us borrow ideas another respect rare designer comes up Outstanding Big Scale Aerobatics * % STAND OFF SCALE SIZE * 92 WINGSPAN 150050 IN * WEIGHT 19 21 LBS * FIBERGLAS COWL & WHEELPANTS * QUADRA ENGINE * AVAIIABLE NOW * PRICE $189 ONLY Ohio fI1UJf]miiIiUiLI % rsSS Aaasumuut lucyVV8CO ure ebtoY5 JB Speciel MK III 84 Mono 78 Bipe Weighi 18 lbs2195 Teceel Air 2000 105 Classic Scale Biplane 23 Ibo 2295 Trend Air 4000 99 Radial Eng Classic Bipe 23 Ins 2295 Fekke DVlI 88 Gecoar WW Fighter Bipe 23 lbs2495 Coeiflg Seen Soocoit Pcp 80 Ripe Sopwih Tnpeoocod 80 Toplane Waco ATO Lyjack Veinioc 90 Biplane Nianpori 11 Bebe 85 biplane 35 Scale Fokker 081 72 Tcplane Plans shipped UPS Parcel Post Please add $300 postage handlino fastest senice send poztna money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockaway NY 11691 212 337-6987m Solareraft presents 2 new fun flyers Solar Scamp 12 high performance free flying ctick m ci $400 Ipoctoge paid rcad3 fit Solar Dart 12 robber potrered hei copter eiimhn ocer 530 Ipontage paul ready fiv Sc cii check tic miintt ortlir Solareraft P 1 Box Ii82 i 2iinti Bcriiti i 1 ittnit inqilirli lilt itt October 1981 125 GIANT SCALE PLANS El NORTHER# CALIFORNIAS LARGEST DISCOUNT HOBBY SHOPI well FUELyouI New high film strength lubricantI increased power engine lifeI Highest qualily ingredientsI Deternnt action rut varnish II II II II II II II II I II IHOURS Monday thru weanesoayv ju-o u inursacy Ci ridoy VjU-6UUI L hmininuminm riginal thought construction techniques Bob Dolly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Giant Scale/Beckman Continued page 49 ignition module no grounding lug magneto assumption lot other people way kill engine open lead Early tests seemed bear Out engine idling opening lead will stop engine dead time higher speeds unfortunately turns out opening lead will cut engine Apparently sealed ignition module dont know anyone knows whats inside present starting idling magneto coild flywheel magnets provide r timing ignition beyond bottom line certain killing engine ignition switch must both open lead ignition module ground coil diagram shows wiring system manual switch radio-operated switch arrangement both switches must engine fire either switch will kill running Plan Reviews month Im taking look two plans Jim Messer member STARS club Allegany NY Jims Ercoupe Piper Tomahawk unusual several respects thing both have tricycle landing gear often seen Giant Scale models groud handling takeoff landing characteristics trike gear can real help newcomers RC flying Another unusual feature method fuselage construction Formers hung straight piece pine used jig through center plane Planking stringers com plete structure jig piece removed result monocoque fuselage structure technique new has seldom used Giant Scale Both models designed start Quadra engine Plywood spruce bass pine used throughout structure balsa appropriate Cheaper foam-core board could used wing ribs some fuselage formers part numbered shown plans Instructions well-detailed materials list included Most building instruc tions right plans refer parts number numbers bit bewildering first long run simplify construction reduce probability errors Both aircraft -scale very similar specs Ercoupe spans 90-in 1250 sq wing area weighs 17 lb Toma hawk spans 100-in 1250 sq area 18-lb weight Outlines dimensions both very close scale except Tomahawk wing chord increased slightly improve its performance plans clearly drawn well detailed consists three sheets 3-ft 6-ft Price $2195 apiece plus postage shipped rolled mailing carton Available Jim Messers Quality Model Products 106 Valley View Drive Al legany NY 14706 Jim also offers complete kits both designs Jim says complete thats really what means Things like wheels propellers cockpit-detailing materials seldom cluded kits yull find two Ercoupe kit $21995 plus postage Tomahawk $23995 plus postage Ill starting Tomahawk soon Ill pass impressions kit Bob Beckman 8248 Holly Grove Court Ma nassas VA 22110 RC Pylon Racing/Hager Continued page 50 tallying final standings Two three people can local club contest large championship national competition will need help Whatever racing event should plan run least five rounds very important protect workers workers should always wear hard hats people number pylon should behind barricades number two three pylon 1 26 Model Aviation TWICE THE FUNELECTRIC CONTROL LINE MODELS Ever want have fun flying got Electroline Models new Twin Just sound two synchronized props will turn theres much fun awaiting fact twice fun free brochure models accessories write us today AVAILABLE ONLY FROM ELECTROLINE MODELS PO BOX 2503 BEVERLY HILLS CA 90213
Edition: Model Aviation - 1981/10
Page Numbers: 46, 47, 124, 125, 126
Radio Control Scale Bob & Dolly Wischer DESIGNING SCALE MODELS profusion Scale kits presently avail able would modeler want design own airplane Reasons plentiful may want something different hasnt done previously its reasonable estimate less half prototypes aviation history have modeled may like challenge working out problems own way modelers among innovative inventive individuals Equally important could seeking distinction producer one-of-akind some may baffle other modelers because uniqueness desire scratchbuild rare prototype could also expression dissatisfaction kits available particu larly fact some types appear half dozen kits equally attractive planes never kitted Skill knowledge patience can acquired desire necessary ingredient successful scratch-designing -building Scale modelers breed apart can amuse themselves endlessly paging through air plane books magazines viewing photo three-view drawing eye its potential model subject Given opportunity time Dennis Tapstield lives Maiaenneaa erKsnIre tnglana ana isjuauiuauiy proud two large-scale models left quarter-scale Meyers Little Toot Prototype EAA Museum tiny models span just 57 right 1936-era Chilton DW 1 builtto scale 35-in 1 ft spans 84 46 Model Aviation Three fantastic models keep turning up Toledo show top Jim Funduks F4U Corsairwith its air-operated folding wings Note high-collared ground crew servicing planes oxygen supply through open hatch lower left Joe Griffins A6M5 Zero built Royal kit modifications Finish acrylic lacquer over silkapan polyester resin Kraft 61 powers 85 lb model lower right scratch-built Ryan FR-I Fireball Bill Mikesell Design basis 3-view drawings found Historical Aviation Album its built 15-in scale features bomb-drop mechanism Rhom retracts Robert nosewheel modeler would prefer build possess airplane strikes fancy practical standpoint will need limit number what can built lifetime Further limitation imposed availability good three-view drawings photo documenta tion needed really rare combination have both drawings access prototype museum airport within reasonable distance say something less thousand miles Scale modelers save file aviation book magazine three-view crosses paths also keep list information sources outside immediate possession also helpful have drawing comparisons can made Dont assume correct three-view Use photos verifi cation necessary documentation gathered start design determining desired model size trial error methods Forget about scale inches foot Use scale ratio such 4 1 65 1 8 1 instead Also forget inch fractions measuring decimal-inch scale US industry standard dimensions compatible calcu lator Wischers latest model being built scale ratio 5647 1 Entered calcu lator constant number decimal places no consequence also need determine multiplication factor converting three-view model size Divide model wingspan threeview span result factor will entered calculator constant model dimensions henceforth Keep written record factor will used often referring three-view drawing separate sheets paper list models critical dimensions sheet possible scale ratios List multiplication factor scale ratio wingspan chord overall length cowl diameter fuselage width wheel diameter landing gear tread width wing area rough estimate weight foregoing except weight determined three-view using multiplication factor found earlier Four five scale ratio sheets laid row compared will usually indicate features limiting factors will show up too small wing area wont carry weight too large wing span wont fit car cowl doesnt contain engine muffler cowl too large models propeller unavailable wheel diameter model size compatible chosen engine shaft extension- may have used move engine rearward nose deeper Continued page 124 SUPER ATLAS 1975 World Champion Designed Wolfgang Mart its super performer can build qoickly Kit comes fiber glass lose pm-sheeted wings foam clear canopy hardware parts machine-cat sanded shape SPAN 67 AREA 740 sqin.LENGTH 59 ERG 61 PRICE $14995 BUILDERS KIT $9995 JET HAWK Ducted- Fan 404 ideal first dacted-fon airplane straight forward sport model assembles super-quick flys gteat Take aff grass fields either re tracts fined gear Uses oar Jet Pomp fan unit adapts easily other types Vs5 get nearly-as sembled airplane fo $14995 Only normal finishing materials needed complete SPAN52 1/2 550 sqie. Wi 5 1/2- 6 1/2 lbs ENG 40 PRIcE $14995 JET PUMP $4995 REVENGER-60-Size Pattern Designed Dick Russ its Sb-inch lomiear-flow mrng700 5gm ama PEVENGEg slips eagerly throagh tooghest AMA-FAI maneucers Comes highly pre-built balsa fuse assembled sanded foam wing panels stakilizers pie-sheeted sanded nertical fin rudder pm-sanded shape Just join wings stab ner rival fin install retracts engine radio coser paint youre ready compete INT5 1/4-53/4 lbs. PRICE $14995 BUILDERS KIT $9995 TIGER TAIL 111 Ron Chidgeys encellent design occomodates enclosed pipe connentional exhaust system Largelp pieassembled kit boasts same featsres described br BOOTLEGGER SPAN 67 AREA 740 sqin. LENGTH 57 ENG 61 PRICE $14995 BUILD ERS KIT $9995 BOOTLEGGER Steve Helms design enclosed tuned pipe con ventional exhaust Comes largely pre-built pm-sheeted wings fiberglass lane molded-in thrust firewall re ference lines molded pipe compartment Pie-cut plywood parts ailerons plus special hardware plans instruc rises AREA 720 sqin. SPAN 64 LENGTH 57 ERG lOne 61 PRICE $14995 BUILDERS KIT $9995 COMPENSATOR shown 1977 Masters lear-time NATS winner COM PENSATOR puts winning design concepts pour hands Comes largely preassembled milk presheeted wings stabilizemcorenfiberglass fsne. pre cut pans ailerons special hardware SPAN 64 AREA 730 sqin. LENGTH 54 ERG 60 Wi 7 3/4 5 lbs. PRICE $14995 BUILDERS KIT $9995 IOC L Did know about selection sport competition airplanes Send catalog today C $100 Local Dealer May Order Direct Send check money order EJC71 4 E FRONTON ST1 BROWNSVILLE TX 78520 512 541-3867 October 1981 47 w nuou ar MACS Show left D B Bakers 3rd-place Sopwith Camel uses 561 Notetne isminated scauu prop right John Pahiows DH 82A Tiger Moth built 25-in scale Model has 72-in wingspan weighs 11 lb has OS 80 engine HOT BLOODED 2 Secal STINSON RELIANT SR5 plan nat @ $1500 Far 60 1. Engln. U Wlnnpan 2 Full Srze sheets Drawings Consi Manual Please add 5260 Postage & Handling Pairial Kits avadattle alt oar designs. Send Cash Check Money Order RICHARD G BARRON 1213 tally SprIng Lan. Grand Blanc MIchIgan 45439 FOKKER TRIPLANE DR-i #RCOS-6 Plan Set $2495 TO Span manauvarabla flys limited area fie ds Prices tor Complete Plans Sub Assembly ano Detailed Parts Lists Add $200 Mailing Tube Send Brochure Details new designs & great thin9s come Send $100 retundablel tor intormation RC Scale/Wischers Continued page 47 ratio may have shifted slightly accom modate unwieldy feature word about calculators least expensive four-function calculator constant needed Ifone already possession worthy investment will slave turn will become its slave years drawngs made rectangular kitchen table now use 45 x 5 ft plywood sheet half table tennis top also use top work table drawing surface made 30-in wide hollow-core door solid core would expensive prefer able doors can found lumber yards slightly damaged condition low prices 30-in x 80-in $700 Drawings can made inexpensive white shelf paper 48-in wide tracing vellum vellum less likely damaged repeated erasures certain occur five-ft T-square reaches across full board width can made thin plywood edges must perfectly straight Absolute square ness necessity needs make parallel lines Other handy tools large plastic triangles compass several long ship curves shorter French curves large plastic protractor very necessary 12-in decimal-inch scale graduated 02-in increments measuring three-view scale no need conversion fractions decimals entry calculator eliminates timeconsuming errors same rule used laying out model outlines enlarged drawing Starting basic line such engine thrust line fuselage centerline fuselage top dimensions taken three-view draw ing run through calculator using multipli cation factor transferred enlarged drawing few pencil lines may have drawn three-view used reference points right angles centerline Starting point front fuselage measure back vertical lines also wing leading trailing edges stab ilizer edges tail post Plot points along original fuselage reference line large drawing measure refer ence line fuselage outline plot shape same method used obtain wing tail outlines well fuselage cross-section shapes time establish wing tail surface incidence angles, would wise inexperienced refer kit magazine draw ings Scale models data critical subject Before proceeding too far determination internal structure would also time decide locations fuel tank servos receiver battery pack battery may item could shifted later change planes balance point alternate locations should considered wing drawing look straight liner leading edge spar centerline basic reference line hinge line tail surfaces handy reference datum line mathematical method enlarging drawing produces least errors thanks calculator may sound complex actually quite rapid operation drawing can completed evening two Curved lines surface outliens can bit tricky reproduce accurately threeview draw series lines vertical basic reference line pass through curve 1 24 Model Aviation No other prop pulls biggie like Now experience filI motor potential Dynathrusts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC E ViSA C COD C CHECK C MO ee cieaier oroer dIrect DYNAThRUST PROPS INC 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 flpaIr 1/4 Scale World War #RCOS 7 Plan Set $2495 80% Wingspan 24 Cu Engines Wgt 10/c lbs w/o radio 35 channels R/C SPORT SCALE AT ITS FINES TI Its Radio Control f/A Scala STINSON RELIANT SR9 plan tat 0 Far Kiarlte typa Ragman 126 Wlngapan S Fall Sian sheets Drawings Coest Manoal Transfer large drawing proportionate locations Now measure dis tance basic line curved line points transfer dimensions dots vertical lines Connect dots ship curve French curve line will accurately reproduced coordinate method drawing curved lines Note few curved lines exist prototypes Tail surface outlines often exceptions rare elliptical wing shapes such Spitfire planes have outlines succession straight lines connected gentle curves point during design always temptation improve models flyability increasing wing area especially tips sharply tapered wing increasing stabilizer area have never found necessary models have flown scale-like manner much same prototype changes spoil true scale appearance Fuselage width another dimensions commonly altered results finished product looking like model rather real thing reasoned wing area too small slightly lower scale ratio should used add area rather changing shape After completion outlines enlarged drawing constructional details need filled High stress points areas require great est amount attention metal engine mount fastened plywood firewall common method adding strength vital area plywood should firmly cemented fuse lage structure using epoxy triangular balsa stock gusset joint 60-size engine plywood should -in thick really improve strength point use two layers -in five-ply laminated white glue Stack slightly overside layers between 3/4-in boards apply pressure C-clamps few hours Cut firewall shape laminated stock wide fuselage laminate three layers Use two three layers 3/32-in ply mount ing 40-size engines Another critical area mounting landing gear music wire gear needs securely fastened steel straps machine screws plywood mount ply tied fuselage wing gussets epoxy third high-stress point wing mount ing prefer broaden area contact between wing fuselage doublers Hard wood blocks wing drilled steel machine screws thread blind nuts plywood plates attached securely fuselage structure high-stress points possible go too far adding strength could result needless addition weight design philosophy says cant keep plane falling apart serious crash can hope protect against inter nal damage occasional inevitable hard landing Too often after crash strong joints found intact rest plane bits pieces indicating some weight could have saved full-size plane cant withstand crash either Use heavy ply hard balsa areas demand Over building can easily double planes weight could actually cause crash result merely mess larger pieces Actual construction details will depend upon modelers previous experience amount innovation can contribute model Lacking wide experience best copy ideas other designers carefully examining drawings magazines kits us borrow ideas another respect rare designer comes up Outstanding Big Scale Aerobatics * % STAND OFF SCALE SIZE * 92 WINGSPAN 150050 IN * WEIGHT 19 21 LBS * FIBERGLAS COWL & WHEELPANTS * QUADRA ENGINE * AVAIIABLE NOW * PRICE $189 ONLY Ohio fI1UJf]miiIiUiLI % rsSS Aaasumuut lucyVV8CO ure ebtoY5 JB Speciel MK III 84 Mono 78 Bipe Weighi 18 lbs2195 Teceel Air 2000 105 Classic Scale Biplane 23 Ibo 2295 Trend Air 4000 99 Radial Eng Classic Bipe 23 Ins 2295 Fekke DVlI 88 Gecoar WW Fighter Bipe 23 lbs2495 Coeiflg Seen Soocoit Pcp 80 Ripe Sopwih Tnpeoocod 80 Toplane Waco ATO Lyjack Veinioc 90 Biplane Nianpori 11 Bebe 85 biplane 35 Scale Fokker 081 72 Tcplane Plans shipped UPS Parcel Post Please add $300 postage handlino fastest senice send poztna money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockaway NY 11691 212 337-6987m Solareraft presents 2 new fun flyers Solar Scamp 12 high performance free flying ctick m ci $400 Ipoctoge paid rcad3 fit Solar Dart 12 robber potrered hei copter eiimhn ocer 530 Ipontage paul ready fiv Sc cii check tic miintt ortlir Solareraft P 1 Box Ii82 i 2iinti Bcriiti i 1 ittnit inqilirli lilt itt October 1981 125 GIANT SCALE PLANS El NORTHER# CALIFORNIAS LARGEST DISCOUNT HOBBY SHOPI well FUELyouI New high film strength lubricantI increased power engine lifeI Highest qualily ingredientsI Deternnt action rut varnish II II II II II II II II I II IHOURS Monday thru weanesoayv ju-o u inursacy Ci ridoy VjU-6UUI L hmininuminm riginal thought construction techniques Bob Dolly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Giant Scale/Beckman Continued page 49 ignition module no grounding lug magneto assumption lot other people way kill engine open lead Early tests seemed bear Out engine idling opening lead will stop engine dead time higher speeds unfortunately turns out opening lead will cut engine Apparently sealed ignition module dont know anyone knows whats inside present starting idling magneto coild flywheel magnets provide r timing ignition beyond bottom line certain killing engine ignition switch must both open lead ignition module ground coil diagram shows wiring system manual switch radio-operated switch arrangement both switches must engine fire either switch will kill running Plan Reviews month Im taking look two plans Jim Messer member STARS club Allegany NY Jims Ercoupe Piper Tomahawk unusual several respects thing both have tricycle landing gear often seen Giant Scale models groud handling takeoff landing characteristics trike gear can real help newcomers RC flying Another unusual feature method fuselage construction Formers hung straight piece pine used jig through center plane Planking stringers com plete structure jig piece removed result monocoque fuselage structure technique new has seldom used Giant Scale Both models designed start Quadra engine Plywood spruce bass pine used throughout structure balsa appropriate Cheaper foam-core board could used wing ribs some fuselage formers part numbered shown plans Instructions well-detailed materials list included Most building instruc tions right plans refer parts number numbers bit bewildering first long run simplify construction reduce probability errors Both aircraft -scale very similar specs Ercoupe spans 90-in 1250 sq wing area weighs 17 lb Toma hawk spans 100-in 1250 sq area 18-lb weight Outlines dimensions both very close scale except Tomahawk wing chord increased slightly improve its performance plans clearly drawn well detailed consists three sheets 3-ft 6-ft Price $2195 apiece plus postage shipped rolled mailing carton Available Jim Messers Quality Model Products 106 Valley View Drive Al legany NY 14706 Jim also offers complete kits both designs Jim says complete thats really what means Things like wheels propellers cockpit-detailing materials seldom cluded kits yull find two Ercoupe kit $21995 plus postage Tomahawk $23995 plus postage Ill starting Tomahawk soon Ill pass impressions kit Bob Beckman 8248 Holly Grove Court Ma nassas VA 22110 RC Pylon Racing/Hager Continued page 50 tallying final standings Two three people can local club contest large championship national competition will need help Whatever racing event should plan run least five rounds very important protect workers workers should always wear hard hats people number pylon should behind barricades number two three pylon 1 26 Model Aviation TWICE THE FUNELECTRIC CONTROL LINE MODELS Ever want have fun flying got Electroline Models new Twin Just sound two synchronized props will turn theres much fun awaiting fact twice fun free brochure models accessories write us today AVAILABLE ONLY FROM ELECTROLINE MODELS PO BOX 2503 BEVERLY HILLS CA 90213
Edition: Model Aviation - 1981/10
Page Numbers: 46, 47, 124, 125, 126
Radio Control Scale Bob & Dolly Wischer DESIGNING SCALE MODELS profusion Scale kits presently avail able would modeler want design own airplane Reasons plentiful may want something different hasnt done previously its reasonable estimate less half prototypes aviation history have modeled may like challenge working out problems own way modelers among innovative inventive individuals Equally important could seeking distinction producer one-of-akind some may baffle other modelers because uniqueness desire scratchbuild rare prototype could also expression dissatisfaction kits available particu larly fact some types appear half dozen kits equally attractive planes never kitted Skill knowledge patience can acquired desire necessary ingredient successful scratch-designing -building Scale modelers breed apart can amuse themselves endlessly paging through air plane books magazines viewing photo three-view drawing eye its potential model subject Given opportunity time Dennis Tapstield lives Maiaenneaa erKsnIre tnglana ana isjuauiuauiy proud two large-scale models left quarter-scale Meyers Little Toot Prototype EAA Museum tiny models span just 57 right 1936-era Chilton DW 1 builtto scale 35-in 1 ft spans 84 46 Model Aviation Three fantastic models keep turning up Toledo show top Jim Funduks F4U Corsairwith its air-operated folding wings Note high-collared ground crew servicing planes oxygen supply through open hatch lower left Joe Griffins A6M5 Zero built Royal kit modifications Finish acrylic lacquer over silkapan polyester resin Kraft 61 powers 85 lb model lower right scratch-built Ryan FR-I Fireball Bill Mikesell Design basis 3-view drawings found Historical Aviation Album its built 15-in scale features bomb-drop mechanism Rhom retracts Robert nosewheel modeler would prefer build possess airplane strikes fancy practical standpoint will need limit number what can built lifetime Further limitation imposed availability good three-view drawings photo documenta tion needed really rare combination have both drawings access prototype museum airport within reasonable distance say something less thousand miles Scale modelers save file aviation book magazine three-view crosses paths also keep list information sources outside immediate possession also helpful have drawing comparisons can made Dont assume correct three-view Use photos verifi cation necessary documentation gathered start design determining desired model size trial error methods Forget about scale inches foot Use scale ratio such 4 1 65 1 8 1 instead Also forget inch fractions measuring decimal-inch scale US industry standard dimensions compatible calcu lator Wischers latest model being built scale ratio 5647 1 Entered calcu lator constant number decimal places no consequence also need determine multiplication factor converting three-view model size Divide model wingspan threeview span result factor will entered calculator constant model dimensions henceforth Keep written record factor will used often referring three-view drawing separate sheets paper list models critical dimensions sheet possible scale ratios List multiplication factor scale ratio wingspan chord overall length cowl diameter fuselage width wheel diameter landing gear tread width wing area rough estimate weight foregoing except weight determined three-view using multiplication factor found earlier Four five scale ratio sheets laid row compared will usually indicate features limiting factors will show up too small wing area wont carry weight too large wing span wont fit car cowl doesnt contain engine muffler cowl too large models propeller unavailable wheel diameter model size compatible chosen engine shaft extension- may have used move engine rearward nose deeper Continued page 124 SUPER ATLAS 1975 World Champion Designed Wolfgang Mart its super performer can build qoickly Kit comes fiber glass lose pm-sheeted wings foam clear canopy hardware parts machine-cat sanded shape SPAN 67 AREA 740 sqin.LENGTH 59 ERG 61 PRICE $14995 BUILDERS KIT $9995 JET HAWK Ducted- Fan 404 ideal first dacted-fon airplane straight forward sport model assembles super-quick flys gteat Take aff grass fields either re tracts fined gear Uses oar Jet Pomp fan unit adapts easily other types Vs5 get nearly-as sembled airplane fo $14995 Only normal finishing materials needed complete SPAN52 1/2 550 sqie. Wi 5 1/2- 6 1/2 lbs ENG 40 PRIcE $14995 JET PUMP $4995 REVENGER-60-Size Pattern Designed Dick Russ its Sb-inch lomiear-flow mrng700 5gm ama PEVENGEg slips eagerly throagh tooghest AMA-FAI maneucers Comes highly pre-built balsa fuse assembled sanded foam wing panels stakilizers pie-sheeted sanded nertical fin rudder pm-sanded shape Just join wings stab ner rival fin install retracts engine radio coser paint youre ready compete INT5 1/4-53/4 lbs. PRICE $14995 BUILDERS KIT $9995 TIGER TAIL 111 Ron Chidgeys encellent design occomodates enclosed pipe connentional exhaust system Largelp pieassembled kit boasts same featsres described br BOOTLEGGER SPAN 67 AREA 740 sqin. LENGTH 57 ENG 61 PRICE $14995 BUILD ERS KIT $9995 BOOTLEGGER Steve Helms design enclosed tuned pipe con ventional exhaust Comes largely pre-built pm-sheeted wings fiberglass lane molded-in thrust firewall re ference lines molded pipe compartment Pie-cut plywood parts ailerons plus special hardware plans instruc rises AREA 720 sqin. SPAN 64 LENGTH 57 ERG lOne 61 PRICE $14995 BUILDERS KIT $9995 COMPENSATOR shown 1977 Masters lear-time NATS winner COM PENSATOR puts winning design concepts pour hands Comes largely preassembled milk presheeted wings stabilizemcorenfiberglass fsne. pre cut pans ailerons special hardware SPAN 64 AREA 730 sqin. LENGTH 54 ERG 60 Wi 7 3/4 5 lbs. PRICE $14995 BUILDERS KIT $9995 IOC L Did know about selection sport competition airplanes Send catalog today C $100 Local Dealer May Order Direct Send check money order EJC71 4 E FRONTON ST1 BROWNSVILLE TX 78520 512 541-3867 October 1981 47 w nuou ar MACS Show left D B Bakers 3rd-place Sopwith Camel uses 561 Notetne isminated scauu prop right John Pahiows DH 82A Tiger Moth built 25-in scale Model has 72-in wingspan weighs 11 lb has OS 80 engine HOT BLOODED 2 Secal STINSON RELIANT SR5 plan nat @ $1500 Far 60 1. Engln. U Wlnnpan 2 Full Srze sheets Drawings Consi Manual Please add 5260 Postage & Handling Pairial Kits avadattle alt oar designs. Send Cash Check Money Order RICHARD G BARRON 1213 tally SprIng Lan. Grand Blanc MIchIgan 45439 FOKKER TRIPLANE DR-i #RCOS-6 Plan Set $2495 TO Span manauvarabla flys limited area fie ds Prices tor Complete Plans Sub Assembly ano Detailed Parts Lists Add $200 Mailing Tube Send Brochure Details new designs & great thin9s come Send $100 retundablel tor intormation RC Scale/Wischers Continued page 47 ratio may have shifted slightly accom modate unwieldy feature word about calculators least expensive four-function calculator constant needed Ifone already possession worthy investment will slave turn will become its slave years drawngs made rectangular kitchen table now use 45 x 5 ft plywood sheet half table tennis top also use top work table drawing surface made 30-in wide hollow-core door solid core would expensive prefer able doors can found lumber yards slightly damaged condition low prices 30-in x 80-in $700 Drawings can made inexpensive white shelf paper 48-in wide tracing vellum vellum less likely damaged repeated erasures certain occur five-ft T-square reaches across full board width can made thin plywood edges must perfectly straight Absolute square ness necessity needs make parallel lines Other handy tools large plastic triangles compass several long ship curves shorter French curves large plastic protractor very necessary 12-in decimal-inch scale graduated 02-in increments measuring three-view scale no need conversion fractions decimals entry calculator eliminates timeconsuming errors same rule used laying out model outlines enlarged drawing Starting basic line such engine thrust line fuselage centerline fuselage top dimensions taken three-view draw ing run through calculator using multipli cation factor transferred enlarged drawing few pencil lines may have drawn three-view used reference points right angles centerline Starting point front fuselage measure back vertical lines also wing leading trailing edges stab ilizer edges tail post Plot points along original fuselage reference line large drawing measure refer ence line fuselage outline plot shape same method used obtain wing tail outlines well fuselage cross-section shapes time establish wing tail surface incidence angles, would wise inexperienced refer kit magazine draw ings Scale models data critical subject Before proceeding too far determination internal structure would also time decide locations fuel tank servos receiver battery pack battery may item could shifted later change planes balance point alternate locations should considered wing drawing look straight liner leading edge spar centerline basic reference line hinge line tail surfaces handy reference datum line mathematical method enlarging drawing produces least errors thanks calculator may sound complex actually quite rapid operation drawing can completed evening two Curved lines surface outliens can bit tricky reproduce accurately threeview draw series lines vertical basic reference line pass through curve 1 24 Model Aviation No other prop pulls biggie like Now experience filI motor potential Dynathrusts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC E ViSA C COD C CHECK C MO ee cieaier oroer dIrect DYNAThRUST PROPS INC 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 flpaIr 1/4 Scale World War #RCOS 7 Plan Set $2495 80% Wingspan 24 Cu Engines Wgt 10/c lbs w/o radio 35 channels R/C SPORT SCALE AT ITS FINES TI Its Radio Control f/A Scala STINSON RELIANT SR9 plan tat 0 Far Kiarlte typa Ragman 126 Wlngapan S Fall Sian sheets Drawings Coest Manoal Transfer large drawing proportionate locations Now measure dis tance basic line curved line points transfer dimensions dots vertical lines Connect dots ship curve French curve line will accurately reproduced coordinate method drawing curved lines Note few curved lines exist prototypes Tail surface outlines often exceptions rare elliptical wing shapes such Spitfire planes have outlines succession straight lines connected gentle curves point during design always temptation improve models flyability increasing wing area especially tips sharply tapered wing increasing stabilizer area have never found necessary models have flown scale-like manner much same prototype changes spoil true scale appearance Fuselage width another dimensions commonly altered results finished product looking like model rather real thing reasoned wing area too small slightly lower scale ratio should used add area rather changing shape After completion outlines enlarged drawing constructional details need filled High stress points areas require great est amount attention metal engine mount fastened plywood firewall common method adding strength vital area plywood should firmly cemented fuse lage structure using epoxy triangular balsa stock gusset joint 60-size engine plywood should -in thick really improve strength point use two layers -in five-ply laminated white glue Stack slightly overside layers between 3/4-in boards apply pressure C-clamps few hours Cut firewall shape laminated stock wide fuselage laminate three layers Use two three layers 3/32-in ply mount ing 40-size engines Another critical area mounting landing gear music wire gear needs securely fastened steel straps machine screws plywood mount ply tied fuselage wing gussets epoxy third high-stress point wing mount ing prefer broaden area contact between wing fuselage doublers Hard wood blocks wing drilled steel machine screws thread blind nuts plywood plates attached securely fuselage structure high-stress points possible go too far adding strength could result needless addition weight design philosophy says cant keep plane falling apart serious crash can hope protect against inter nal damage occasional inevitable hard landing Too often after crash strong joints found intact rest plane bits pieces indicating some weight could have saved full-size plane cant withstand crash either Use heavy ply hard balsa areas demand Over building can easily double planes weight could actually cause crash result merely mess larger pieces Actual construction details will depend upon modelers previous experience amount innovation can contribute model Lacking wide experience best copy ideas other designers carefully examining drawings magazines kits us borrow ideas another respect rare designer comes up Outstanding Big Scale Aerobatics * % STAND OFF SCALE SIZE * 92 WINGSPAN 150050 IN * WEIGHT 19 21 LBS * FIBERGLAS COWL & WHEELPANTS * QUADRA ENGINE * AVAIIABLE NOW * PRICE $189 ONLY Ohio fI1UJf]miiIiUiLI % rsSS Aaasumuut lucyVV8CO ure ebtoY5 JB Speciel MK III 84 Mono 78 Bipe Weighi 18 lbs2195 Teceel Air 2000 105 Classic Scale Biplane 23 Ibo 2295 Trend Air 4000 99 Radial Eng Classic Bipe 23 Ins 2295 Fekke DVlI 88 Gecoar WW Fighter Bipe 23 lbs2495 Coeiflg Seen Soocoit Pcp 80 Ripe Sopwih Tnpeoocod 80 Toplane Waco ATO Lyjack Veinioc 90 Biplane Nianpori 11 Bebe 85 biplane 35 Scale Fokker 081 72 Tcplane Plans shipped UPS Parcel Post Please add $300 postage handlino fastest senice send poztna money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockaway NY 11691 212 337-6987m Solareraft presents 2 new fun flyers Solar Scamp 12 high performance free flying ctick m ci $400 Ipoctoge paid rcad3 fit Solar Dart 12 robber potrered hei copter eiimhn ocer 530 Ipontage paul ready fiv Sc cii check tic miintt ortlir Solareraft P 1 Box Ii82 i 2iinti Bcriiti i 1 ittnit inqilirli lilt itt October 1981 125 GIANT SCALE PLANS El NORTHER# CALIFORNIAS LARGEST DISCOUNT HOBBY SHOPI well FUELyouI New high film strength lubricantI increased power engine lifeI Highest qualily ingredientsI Deternnt action rut varnish II II II II II II II II I II IHOURS Monday thru weanesoayv ju-o u inursacy Ci ridoy VjU-6UUI L hmininuminm riginal thought construction techniques Bob Dolly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Giant Scale/Beckman Continued page 49 ignition module no grounding lug magneto assumption lot other people way kill engine open lead Early tests seemed bear Out engine idling opening lead will stop engine dead time higher speeds unfortunately turns out opening lead will cut engine Apparently sealed ignition module dont know anyone knows whats inside present starting idling magneto coild flywheel magnets provide r timing ignition beyond bottom line certain killing engine ignition switch must both open lead ignition module ground coil diagram shows wiring system manual switch radio-operated switch arrangement both switches must engine fire either switch will kill running Plan Reviews month Im taking look two plans Jim Messer member STARS club Allegany NY Jims Ercoupe Piper Tomahawk unusual several respects thing both have tricycle landing gear often seen Giant Scale models groud handling takeoff landing characteristics trike gear can real help newcomers RC flying Another unusual feature method fuselage construction Formers hung straight piece pine used jig through center plane Planking stringers com plete structure jig piece removed result monocoque fuselage structure technique new has seldom used Giant Scale Both models designed start Quadra engine Plywood spruce bass pine used throughout structure balsa appropriate Cheaper foam-core board could used wing ribs some fuselage formers part numbered shown plans Instructions well-detailed materials list included Most building instruc tions right plans refer parts number numbers bit bewildering first long run simplify construction reduce probability errors Both aircraft -scale very similar specs Ercoupe spans 90-in 1250 sq wing area weighs 17 lb Toma hawk spans 100-in 1250 sq area 18-lb weight Outlines dimensions both very close scale except Tomahawk wing chord increased slightly improve its performance plans clearly drawn well detailed consists three sheets 3-ft 6-ft Price $2195 apiece plus postage shipped rolled mailing carton Available Jim Messers Quality Model Products 106 Valley View Drive Al legany NY 14706 Jim also offers complete kits both designs Jim says complete thats really what means Things like wheels propellers cockpit-detailing materials seldom cluded kits yull find two Ercoupe kit $21995 plus postage Tomahawk $23995 plus postage Ill starting Tomahawk soon Ill pass impressions kit Bob Beckman 8248 Holly Grove Court Ma nassas VA 22110 RC Pylon Racing/Hager Continued page 50 tallying final standings Two three people can local club contest large championship national competition will need help Whatever racing event should plan run least five rounds very important protect workers workers should always wear hard hats people number pylon should behind barricades number two three pylon 1 26 Model Aviation TWICE THE FUNELECTRIC CONTROL LINE MODELS Ever want have fun flying got Electroline Models new Twin Just sound two synchronized props will turn theres much fun awaiting fact twice fun free brochure models accessories write us today AVAILABLE ONLY FROM ELECTROLINE MODELS PO BOX 2503 BEVERLY HILLS CA 90213
Edition: Model Aviation - 1981/10
Page Numbers: 46, 47, 124, 125, 126
Radio Control Scale Bob & Dolly Wischer DESIGNING SCALE MODELS profusion Scale kits presently avail able would modeler want design own airplane Reasons plentiful may want something different hasnt done previously its reasonable estimate less half prototypes aviation history have modeled may like challenge working out problems own way modelers among innovative inventive individuals Equally important could seeking distinction producer one-of-akind some may baffle other modelers because uniqueness desire scratchbuild rare prototype could also expression dissatisfaction kits available particu larly fact some types appear half dozen kits equally attractive planes never kitted Skill knowledge patience can acquired desire necessary ingredient successful scratch-designing -building Scale modelers breed apart can amuse themselves endlessly paging through air plane books magazines viewing photo three-view drawing eye its potential model subject Given opportunity time Dennis Tapstield lives Maiaenneaa erKsnIre tnglana ana isjuauiuauiy proud two large-scale models left quarter-scale Meyers Little Toot Prototype EAA Museum tiny models span just 57 right 1936-era Chilton DW 1 builtto scale 35-in 1 ft spans 84 46 Model Aviation Three fantastic models keep turning up Toledo show top Jim Funduks F4U Corsairwith its air-operated folding wings Note high-collared ground crew servicing planes oxygen supply through open hatch lower left Joe Griffins A6M5 Zero built Royal kit modifications Finish acrylic lacquer over silkapan polyester resin Kraft 61 powers 85 lb model lower right scratch-built Ryan FR-I Fireball Bill Mikesell Design basis 3-view drawings found Historical Aviation Album its built 15-in scale features bomb-drop mechanism Rhom retracts Robert nosewheel modeler would prefer build possess airplane strikes fancy practical standpoint will need limit number what can built lifetime Further limitation imposed availability good three-view drawings photo documenta tion needed really rare combination have both drawings access prototype museum airport within reasonable distance say something less thousand miles Scale modelers save file aviation book magazine three-view crosses paths also keep list information sources outside immediate possession also helpful have drawing comparisons can made Dont assume correct three-view Use photos verifi cation necessary documentation gathered start design determining desired model size trial error methods Forget about scale inches foot Use scale ratio such 4 1 65 1 8 1 instead Also forget inch fractions measuring decimal-inch scale US industry standard dimensions compatible calcu lator Wischers latest model being built scale ratio 5647 1 Entered calcu lator constant number decimal places no consequence also need determine multiplication factor converting three-view model size Divide model wingspan threeview span result factor will entered calculator constant model dimensions henceforth Keep written record factor will used often referring three-view drawing separate sheets paper list models critical dimensions sheet possible scale ratios List multiplication factor scale ratio wingspan chord overall length cowl diameter fuselage width wheel diameter landing gear tread width wing area rough estimate weight foregoing except weight determined three-view using multiplication factor found earlier Four five scale ratio sheets laid row compared will usually indicate features limiting factors will show up too small wing area wont carry weight too large wing span wont fit car cowl doesnt contain engine muffler cowl too large models propeller unavailable wheel diameter model size compatible chosen engine shaft extension- may have used move engine rearward nose deeper Continued page 124 SUPER ATLAS 1975 World Champion Designed Wolfgang Mart its super performer can build qoickly Kit comes fiber glass lose pm-sheeted wings foam clear canopy hardware parts machine-cat sanded shape SPAN 67 AREA 740 sqin.LENGTH 59 ERG 61 PRICE $14995 BUILDERS KIT $9995 JET HAWK Ducted- Fan 404 ideal first dacted-fon airplane straight forward sport model assembles super-quick flys gteat Take aff grass fields either re tracts fined gear Uses oar Jet Pomp fan unit adapts easily other types Vs5 get nearly-as sembled airplane fo $14995 Only normal finishing materials needed complete SPAN52 1/2 550 sqie. Wi 5 1/2- 6 1/2 lbs ENG 40 PRIcE $14995 JET PUMP $4995 REVENGER-60-Size Pattern Designed Dick Russ its Sb-inch lomiear-flow mrng700 5gm ama PEVENGEg slips eagerly throagh tooghest AMA-FAI maneucers Comes highly pre-built balsa fuse assembled sanded foam wing panels stakilizers pie-sheeted sanded nertical fin rudder pm-sanded shape Just join wings stab ner rival fin install retracts engine radio coser paint youre ready compete INT5 1/4-53/4 lbs. PRICE $14995 BUILDERS KIT $9995 TIGER TAIL 111 Ron Chidgeys encellent design occomodates enclosed pipe connentional exhaust system Largelp pieassembled kit boasts same featsres described br BOOTLEGGER SPAN 67 AREA 740 sqin. LENGTH 57 ENG 61 PRICE $14995 BUILD ERS KIT $9995 BOOTLEGGER Steve Helms design enclosed tuned pipe con ventional exhaust Comes largely pre-built pm-sheeted wings fiberglass lane molded-in thrust firewall re ference lines molded pipe compartment Pie-cut plywood parts ailerons plus special hardware plans instruc rises AREA 720 sqin. SPAN 64 LENGTH 57 ERG lOne 61 PRICE $14995 BUILDERS KIT $9995 COMPENSATOR shown 1977 Masters lear-time NATS winner COM PENSATOR puts winning design concepts pour hands Comes largely preassembled milk presheeted wings stabilizemcorenfiberglass fsne. pre cut pans ailerons special hardware SPAN 64 AREA 730 sqin. LENGTH 54 ERG 60 Wi 7 3/4 5 lbs. PRICE $14995 BUILDERS KIT $9995 IOC L Did know about selection sport competition airplanes Send catalog today C $100 Local Dealer May Order Direct Send check money order EJC71 4 E FRONTON ST1 BROWNSVILLE TX 78520 512 541-3867 October 1981 47 w nuou ar MACS Show left D B Bakers 3rd-place Sopwith Camel uses 561 Notetne isminated scauu prop right John Pahiows DH 82A Tiger Moth built 25-in scale Model has 72-in wingspan weighs 11 lb has OS 80 engine HOT BLOODED 2 Secal STINSON RELIANT SR5 plan nat @ $1500 Far 60 1. Engln. U Wlnnpan 2 Full Srze sheets Drawings Consi Manual Please add 5260 Postage & Handling Pairial Kits avadattle alt oar designs. Send Cash Check Money Order RICHARD G BARRON 1213 tally SprIng Lan. Grand Blanc MIchIgan 45439 FOKKER TRIPLANE DR-i #RCOS-6 Plan Set $2495 TO Span manauvarabla flys limited area fie ds Prices tor Complete Plans Sub Assembly ano Detailed Parts Lists Add $200 Mailing Tube Send Brochure Details new designs & great thin9s come Send $100 retundablel tor intormation RC Scale/Wischers Continued page 47 ratio may have shifted slightly accom modate unwieldy feature word about calculators least expensive four-function calculator constant needed Ifone already possession worthy investment will slave turn will become its slave years drawngs made rectangular kitchen table now use 45 x 5 ft plywood sheet half table tennis top also use top work table drawing surface made 30-in wide hollow-core door solid core would expensive prefer able doors can found lumber yards slightly damaged condition low prices 30-in x 80-in $700 Drawings can made inexpensive white shelf paper 48-in wide tracing vellum vellum less likely damaged repeated erasures certain occur five-ft T-square reaches across full board width can made thin plywood edges must perfectly straight Absolute square ness necessity needs make parallel lines Other handy tools large plastic triangles compass several long ship curves shorter French curves large plastic protractor very necessary 12-in decimal-inch scale graduated 02-in increments measuring three-view scale no need conversion fractions decimals entry calculator eliminates timeconsuming errors same rule used laying out model outlines enlarged drawing Starting basic line such engine thrust line fuselage centerline fuselage top dimensions taken three-view draw ing run through calculator using multipli cation factor transferred enlarged drawing few pencil lines may have drawn three-view used reference points right angles centerline Starting point front fuselage measure back vertical lines also wing leading trailing edges stab ilizer edges tail post Plot points along original fuselage reference line large drawing measure refer ence line fuselage outline plot shape same method used obtain wing tail outlines well fuselage cross-section shapes time establish wing tail surface incidence angles, would wise inexperienced refer kit magazine draw ings Scale models data critical subject Before proceeding too far determination internal structure would also time decide locations fuel tank servos receiver battery pack battery may item could shifted later change planes balance point alternate locations should considered wing drawing look straight liner leading edge spar centerline basic reference line hinge line tail surfaces handy reference datum line mathematical method enlarging drawing produces least errors thanks calculator may sound complex actually quite rapid operation drawing can completed evening two Curved lines surface outliens can bit tricky reproduce accurately threeview draw series lines vertical basic reference line pass through curve 1 24 Model Aviation No other prop pulls biggie like Now experience filI motor potential Dynathrusts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC E ViSA C COD C CHECK C MO ee cieaier oroer dIrect DYNAThRUST PROPS INC 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 flpaIr 1/4 Scale World War #RCOS 7 Plan Set $2495 80% Wingspan 24 Cu Engines Wgt 10/c lbs w/o radio 35 channels R/C SPORT SCALE AT ITS FINES TI Its Radio Control f/A Scala STINSON RELIANT SR9 plan tat 0 Far Kiarlte typa Ragman 126 Wlngapan S Fall Sian sheets Drawings Coest Manoal Transfer large drawing proportionate locations Now measure dis tance basic line curved line points transfer dimensions dots vertical lines Connect dots ship curve French curve line will accurately reproduced coordinate method drawing curved lines Note few curved lines exist prototypes Tail surface outlines often exceptions rare elliptical wing shapes such Spitfire planes have outlines succession straight lines connected gentle curves point during design always temptation improve models flyability increasing wing area especially tips sharply tapered wing increasing stabilizer area have never found necessary models have flown scale-like manner much same prototype changes spoil true scale appearance Fuselage width another dimensions commonly altered results finished product looking like model rather real thing reasoned wing area too small slightly lower scale ratio should used add area rather changing shape After completion outlines enlarged drawing constructional details need filled High stress points areas require great est amount attention metal engine mount fastened plywood firewall common method adding strength vital area plywood should firmly cemented fuse lage structure using epoxy triangular balsa stock gusset joint 60-size engine plywood should -in thick really improve strength point use two layers -in five-ply laminated white glue Stack slightly overside layers between 3/4-in boards apply pressure C-clamps few hours Cut firewall shape laminated stock wide fuselage laminate three layers Use two three layers 3/32-in ply mount ing 40-size engines Another critical area mounting landing gear music wire gear needs securely fastened steel straps machine screws plywood mount ply tied fuselage wing gussets epoxy third high-stress point wing mount ing prefer broaden area contact between wing fuselage doublers Hard wood blocks wing drilled steel machine screws thread blind nuts plywood plates attached securely fuselage structure high-stress points possible go too far adding strength could result needless addition weight design philosophy says cant keep plane falling apart serious crash can hope protect against inter nal damage occasional inevitable hard landing Too often after crash strong joints found intact rest plane bits pieces indicating some weight could have saved full-size plane cant withstand crash either Use heavy ply hard balsa areas demand Over building can easily double planes weight could actually cause crash result merely mess larger pieces Actual construction details will depend upon modelers previous experience amount innovation can contribute model Lacking wide experience best copy ideas other designers carefully examining drawings magazines kits us borrow ideas another respect rare designer comes up Outstanding Big Scale Aerobatics * % STAND OFF SCALE SIZE * 92 WINGSPAN 150050 IN * WEIGHT 19 21 LBS * FIBERGLAS COWL & WHEELPANTS * QUADRA ENGINE * AVAIIABLE NOW * PRICE $189 ONLY Ohio fI1UJf]miiIiUiLI % rsSS Aaasumuut lucyVV8CO ure ebtoY5 JB Speciel MK III 84 Mono 78 Bipe Weighi 18 lbs2195 Teceel Air 2000 105 Classic Scale Biplane 23 Ibo 2295 Trend Air 4000 99 Radial Eng Classic Bipe 23 Ins 2295 Fekke DVlI 88 Gecoar WW Fighter Bipe 23 lbs2495 Coeiflg Seen Soocoit Pcp 80 Ripe Sopwih Tnpeoocod 80 Toplane Waco ATO Lyjack Veinioc 90 Biplane Nianpori 11 Bebe 85 biplane 35 Scale Fokker 081 72 Tcplane Plans shipped UPS Parcel Post Please add $300 postage handlino fastest senice send poztna money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockaway NY 11691 212 337-6987m Solareraft presents 2 new fun flyers Solar Scamp 12 high performance free flying ctick m ci $400 Ipoctoge paid rcad3 fit Solar Dart 12 robber potrered hei copter eiimhn ocer 530 Ipontage paul ready fiv Sc cii check tic miintt ortlir Solareraft P 1 Box Ii82 i 2iinti Bcriiti i 1 ittnit inqilirli lilt itt October 1981 125 GIANT SCALE PLANS El NORTHER# CALIFORNIAS LARGEST DISCOUNT HOBBY SHOPI well FUELyouI New high film strength lubricantI increased power engine lifeI Highest qualily ingredientsI Deternnt action rut varnish II II II II II II II II I II IHOURS Monday thru weanesoayv ju-o u inursacy Ci ridoy VjU-6UUI L hmininuminm riginal thought construction techniques Bob Dolly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Giant Scale/Beckman Continued page 49 ignition module no grounding lug magneto assumption lot other people way kill engine open lead Early tests seemed bear Out engine idling opening lead will stop engine dead time higher speeds unfortunately turns out opening lead will cut engine Apparently sealed ignition module dont know anyone knows whats inside present starting idling magneto coild flywheel magnets provide r timing ignition beyond bottom line certain killing engine ignition switch must both open lead ignition module ground coil diagram shows wiring system manual switch radio-operated switch arrangement both switches must engine fire either switch will kill running Plan Reviews month Im taking look two plans Jim Messer member STARS club Allegany NY Jims Ercoupe Piper Tomahawk unusual several respects thing both have tricycle landing gear often seen Giant Scale models groud handling takeoff landing characteristics trike gear can real help newcomers RC flying Another unusual feature method fuselage construction Formers hung straight piece pine used jig through center plane Planking stringers com plete structure jig piece removed result monocoque fuselage structure technique new has seldom used Giant Scale Both models designed start Quadra engine Plywood spruce bass pine used throughout structure balsa appropriate Cheaper foam-core board could used wing ribs some fuselage formers part numbered shown plans Instructions well-detailed materials list included Most building instruc tions right plans refer parts number numbers bit bewildering first long run simplify construction reduce probability errors Both aircraft -scale very similar specs Ercoupe spans 90-in 1250 sq wing area weighs 17 lb Toma hawk spans 100-in 1250 sq area 18-lb weight Outlines dimensions both very close scale except Tomahawk wing chord increased slightly improve its performance plans clearly drawn well detailed consists three sheets 3-ft 6-ft Price $2195 apiece plus postage shipped rolled mailing carton Available Jim Messers Quality Model Products 106 Valley View Drive Al legany NY 14706 Jim also offers complete kits both designs Jim says complete thats really what means Things like wheels propellers cockpit-detailing materials seldom cluded kits yull find two Ercoupe kit $21995 plus postage Tomahawk $23995 plus postage Ill starting Tomahawk soon Ill pass impressions kit Bob Beckman 8248 Holly Grove Court Ma nassas VA 22110 RC Pylon Racing/Hager Continued page 50 tallying final standings Two three people can local club contest large championship national competition will need help Whatever racing event should plan run least five rounds very important protect workers workers should always wear hard hats people number pylon should behind barricades number two three pylon 1 26 Model Aviation TWICE THE FUNELECTRIC CONTROL LINE MODELS Ever want have fun flying got Electroline Models new Twin Just sound two synchronized props will turn theres much fun awaiting fact twice fun free brochure models accessories write us today AVAILABLE ONLY FROM ELECTROLINE MODELS PO BOX 2503 BEVERLY HILLS CA 90213
Edition: Model Aviation - 1981/10
Page Numbers: 46, 47, 124, 125, 126
Radio Control Scale Bob & Dolly Wischer DESIGNING SCALE MODELS profusion Scale kits presently avail able would modeler want design own airplane Reasons plentiful may want something different hasnt done previously its reasonable estimate less half prototypes aviation history have modeled may like challenge working out problems own way modelers among innovative inventive individuals Equally important could seeking distinction producer one-of-akind some may baffle other modelers because uniqueness desire scratchbuild rare prototype could also expression dissatisfaction kits available particu larly fact some types appear half dozen kits equally attractive planes never kitted Skill knowledge patience can acquired desire necessary ingredient successful scratch-designing -building Scale modelers breed apart can amuse themselves endlessly paging through air plane books magazines viewing photo three-view drawing eye its potential model subject Given opportunity time Dennis Tapstield lives Maiaenneaa erKsnIre tnglana ana isjuauiuauiy proud two large-scale models left quarter-scale Meyers Little Toot Prototype EAA Museum tiny models span just 57 right 1936-era Chilton DW 1 builtto scale 35-in 1 ft spans 84 46 Model Aviation Three fantastic models keep turning up Toledo show top Jim Funduks F4U Corsairwith its air-operated folding wings Note high-collared ground crew servicing planes oxygen supply through open hatch lower left Joe Griffins A6M5 Zero built Royal kit modifications Finish acrylic lacquer over silkapan polyester resin Kraft 61 powers 85 lb model lower right scratch-built Ryan FR-I Fireball Bill Mikesell Design basis 3-view drawings found Historical Aviation Album its built 15-in scale features bomb-drop mechanism Rhom retracts Robert nosewheel modeler would prefer build possess airplane strikes fancy practical standpoint will need limit number what can built lifetime Further limitation imposed availability good three-view drawings photo documenta tion needed really rare combination have both drawings access prototype museum airport within reasonable distance say something less thousand miles Scale modelers save file aviation book magazine three-view crosses paths also keep list information sources outside immediate possession also helpful have drawing comparisons can made Dont assume correct three-view Use photos verifi cation necessary documentation gathered start design determining desired model size trial error methods Forget about scale inches foot Use scale ratio such 4 1 65 1 8 1 instead Also forget inch fractions measuring decimal-inch scale US industry standard dimensions compatible calcu lator Wischers latest model being built scale ratio 5647 1 Entered calcu lator constant number decimal places no consequence also need determine multiplication factor converting three-view model size Divide model wingspan threeview span result factor will entered calculator constant model dimensions henceforth Keep written record factor will used often referring three-view drawing separate sheets paper list models critical dimensions sheet possible scale ratios List multiplication factor scale ratio wingspan chord overall length cowl diameter fuselage width wheel diameter landing gear tread width wing area rough estimate weight foregoing except weight determined three-view using multiplication factor found earlier Four five scale ratio sheets laid row compared will usually indicate features limiting factors will show up too small wing area wont carry weight too large wing span wont fit car cowl doesnt contain engine muffler cowl too large models propeller unavailable wheel diameter model size compatible chosen engine shaft extension- may have used move engine rearward nose deeper Continued page 124 SUPER ATLAS 1975 World Champion Designed Wolfgang Mart its super performer can build qoickly Kit comes fiber glass lose pm-sheeted wings foam clear canopy hardware parts machine-cat sanded shape SPAN 67 AREA 740 sqin.LENGTH 59 ERG 61 PRICE $14995 BUILDERS KIT $9995 JET HAWK Ducted- Fan 404 ideal first dacted-fon airplane straight forward sport model assembles super-quick flys gteat Take aff grass fields either re tracts fined gear Uses oar Jet Pomp fan unit adapts easily other types Vs5 get nearly-as sembled airplane fo $14995 Only normal finishing materials needed complete SPAN52 1/2 550 sqie. Wi 5 1/2- 6 1/2 lbs ENG 40 PRIcE $14995 JET PUMP $4995 REVENGER-60-Size Pattern Designed Dick Russ its Sb-inch lomiear-flow mrng700 5gm ama PEVENGEg slips eagerly throagh tooghest AMA-FAI maneucers Comes highly pre-built balsa fuse assembled sanded foam wing panels stakilizers pie-sheeted sanded nertical fin rudder pm-sanded shape Just join wings stab ner rival fin install retracts engine radio coser paint youre ready compete INT5 1/4-53/4 lbs. PRICE $14995 BUILDERS KIT $9995 TIGER TAIL 111 Ron Chidgeys encellent design occomodates enclosed pipe connentional exhaust system Largelp pieassembled kit boasts same featsres described br BOOTLEGGER SPAN 67 AREA 740 sqin. LENGTH 57 ENG 61 PRICE $14995 BUILD ERS KIT $9995 BOOTLEGGER Steve Helms design enclosed tuned pipe con ventional exhaust Comes largely pre-built pm-sheeted wings fiberglass lane molded-in thrust firewall re ference lines molded pipe compartment Pie-cut plywood parts ailerons plus special hardware plans instruc rises AREA 720 sqin. SPAN 64 LENGTH 57 ERG lOne 61 PRICE $14995 BUILDERS KIT $9995 COMPENSATOR shown 1977 Masters lear-time NATS winner COM PENSATOR puts winning design concepts pour hands Comes largely preassembled milk presheeted wings stabilizemcorenfiberglass fsne. pre cut pans ailerons special hardware SPAN 64 AREA 730 sqin. LENGTH 54 ERG 60 Wi 7 3/4 5 lbs. PRICE $14995 BUILDERS KIT $9995 IOC L Did know about selection sport competition airplanes Send catalog today C $100 Local Dealer May Order Direct Send check money order EJC71 4 E FRONTON ST1 BROWNSVILLE TX 78520 512 541-3867 October 1981 47 w nuou ar MACS Show left D B Bakers 3rd-place Sopwith Camel uses 561 Notetne isminated scauu prop right John Pahiows DH 82A Tiger Moth built 25-in scale Model has 72-in wingspan weighs 11 lb has OS 80 engine HOT BLOODED 2 Secal STINSON RELIANT SR5 plan nat @ $1500 Far 60 1. Engln. U Wlnnpan 2 Full Srze sheets Drawings Consi Manual Please add 5260 Postage & Handling Pairial Kits avadattle alt oar designs. Send Cash Check Money Order RICHARD G BARRON 1213 tally SprIng Lan. Grand Blanc MIchIgan 45439 FOKKER TRIPLANE DR-i #RCOS-6 Plan Set $2495 TO Span manauvarabla flys limited area fie ds Prices tor Complete Plans Sub Assembly ano Detailed Parts Lists Add $200 Mailing Tube Send Brochure Details new designs & great thin9s come Send $100 retundablel tor intormation RC Scale/Wischers Continued page 47 ratio may have shifted slightly accom modate unwieldy feature word about calculators least expensive four-function calculator constant needed Ifone already possession worthy investment will slave turn will become its slave years drawngs made rectangular kitchen table now use 45 x 5 ft plywood sheet half table tennis top also use top work table drawing surface made 30-in wide hollow-core door solid core would expensive prefer able doors can found lumber yards slightly damaged condition low prices 30-in x 80-in $700 Drawings can made inexpensive white shelf paper 48-in wide tracing vellum vellum less likely damaged repeated erasures certain occur five-ft T-square reaches across full board width can made thin plywood edges must perfectly straight Absolute square ness necessity needs make parallel lines Other handy tools large plastic triangles compass several long ship curves shorter French curves large plastic protractor very necessary 12-in decimal-inch scale graduated 02-in increments measuring three-view scale no need conversion fractions decimals entry calculator eliminates timeconsuming errors same rule used laying out model outlines enlarged drawing Starting basic line such engine thrust line fuselage centerline fuselage top dimensions taken three-view draw ing run through calculator using multipli cation factor transferred enlarged drawing few pencil lines may have drawn three-view used reference points right angles centerline Starting point front fuselage measure back vertical lines also wing leading trailing edges stab ilizer edges tail post Plot points along original fuselage reference line large drawing measure refer ence line fuselage outline plot shape same method used obtain wing tail outlines well fuselage cross-section shapes time establish wing tail surface incidence angles, would wise inexperienced refer kit magazine draw ings Scale models data critical subject Before proceeding too far determination internal structure would also time decide locations fuel tank servos receiver battery pack battery may item could shifted later change planes balance point alternate locations should considered wing drawing look straight liner leading edge spar centerline basic reference line hinge line tail surfaces handy reference datum line mathematical method enlarging drawing produces least errors thanks calculator may sound complex actually quite rapid operation drawing can completed evening two Curved lines surface outliens can bit tricky reproduce accurately threeview draw series lines vertical basic reference line pass through curve 1 24 Model Aviation No other prop pulls biggie like Now experience filI motor potential Dynathrusts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC E ViSA C COD C CHECK C MO ee cieaier oroer dIrect DYNAThRUST PROPS INC 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 flpaIr 1/4 Scale World War #RCOS 7 Plan Set $2495 80% Wingspan 24 Cu Engines Wgt 10/c lbs w/o radio 35 channels R/C SPORT SCALE AT ITS FINES TI Its Radio Control f/A Scala STINSON RELIANT SR9 plan tat 0 Far Kiarlte typa Ragman 126 Wlngapan S Fall Sian sheets Drawings Coest Manoal Transfer large drawing proportionate locations Now measure dis tance basic line curved line points transfer dimensions dots vertical lines Connect dots ship curve French curve line will accurately reproduced coordinate method drawing curved lines Note few curved lines exist prototypes Tail surface outlines often exceptions rare elliptical wing shapes such Spitfire planes have outlines succession straight lines connected gentle curves point during design always temptation improve models flyability increasing wing area especially tips sharply tapered wing increasing stabilizer area have never found necessary models have flown scale-like manner much same prototype changes spoil true scale appearance Fuselage width another dimensions commonly altered results finished product looking like model rather real thing reasoned wing area too small slightly lower scale ratio should used add area rather changing shape After completion outlines enlarged drawing constructional details need filled High stress points areas require great est amount attention metal engine mount fastened plywood firewall common method adding strength vital area plywood should firmly cemented fuse lage structure using epoxy triangular balsa stock gusset joint 60-size engine plywood should -in thick really improve strength point use two layers -in five-ply laminated white glue Stack slightly overside layers between 3/4-in boards apply pressure C-clamps few hours Cut firewall shape laminated stock wide fuselage laminate three layers Use two three layers 3/32-in ply mount ing 40-size engines Another critical area mounting landing gear music wire gear needs securely fastened steel straps machine screws plywood mount ply tied fuselage wing gussets epoxy third high-stress point wing mount ing prefer broaden area contact between wing fuselage doublers Hard wood blocks wing drilled steel machine screws thread blind nuts plywood plates attached securely fuselage structure high-stress points possible go too far adding strength could result needless addition weight design philosophy says cant keep plane falling apart serious crash can hope protect against inter nal damage occasional inevitable hard landing Too often after crash strong joints found intact rest plane bits pieces indicating some weight could have saved full-size plane cant withstand crash either Use heavy ply hard balsa areas demand Over building can easily double planes weight could actually cause crash result merely mess larger pieces Actual construction details will depend upon modelers previous experience amount innovation can contribute model Lacking wide experience best copy ideas other designers carefully examining drawings magazines kits us borrow ideas another respect rare designer comes up Outstanding Big Scale Aerobatics * % STAND OFF SCALE SIZE * 92 WINGSPAN 150050 IN * WEIGHT 19 21 LBS * FIBERGLAS COWL & WHEELPANTS * QUADRA ENGINE * AVAIIABLE NOW * PRICE $189 ONLY Ohio fI1UJf]miiIiUiLI % rsSS Aaasumuut lucyVV8CO ure ebtoY5 JB Speciel MK III 84 Mono 78 Bipe Weighi 18 lbs2195 Teceel Air 2000 105 Classic Scale Biplane 23 Ibo 2295 Trend Air 4000 99 Radial Eng Classic Bipe 23 Ins 2295 Fekke DVlI 88 Gecoar WW Fighter Bipe 23 lbs2495 Coeiflg Seen Soocoit Pcp 80 Ripe Sopwih Tnpeoocod 80 Toplane Waco ATO Lyjack Veinioc 90 Biplane Nianpori 11 Bebe 85 biplane 35 Scale Fokker 081 72 Tcplane Plans shipped UPS Parcel Post Please add $300 postage handlino fastest senice send poztna money order No C 00 orders sent BEHRENS PLAN SERVICE 31-27 Healy Ave. Far Rockaway NY 11691 212 337-6987m Solareraft presents 2 new fun flyers Solar Scamp 12 high performance free flying ctick m ci $400 Ipoctoge paid rcad3 fit Solar Dart 12 robber potrered hei copter eiimhn ocer 530 Ipontage paul ready fiv Sc cii check tic miintt ortlir Solareraft P 1 Box Ii82 i 2iinti Bcriiti i 1 ittnit inqilirli lilt itt October 1981 125 GIANT SCALE PLANS El NORTHER# CALIFORNIAS LARGEST DISCOUNT HOBBY SHOPI well FUELyouI New high film strength lubricantI increased power engine lifeI Highest qualily ingredientsI Deternnt action rut varnish II II II II II II II II I II IHOURS Monday thru weanesoayv ju-o u inursacy Ci ridoy VjU-6UUI L hmininuminm riginal thought construction techniques Bob Dolly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Giant Scale/Beckman Continued page 49 ignition module no grounding lug magneto assumption lot other people way kill engine open lead Early tests seemed bear Out engine idling opening lead will stop engine dead time higher speeds unfortunately turns out opening lead will cut engine Apparently sealed ignition module dont know anyone knows whats inside present starting idling magneto coild flywheel magnets provide r timing ignition beyond bottom line certain killing engine ignition switch must both open lead ignition module ground coil diagram shows wiring system manual switch radio-operated switch arrangement both switches must engine fire either switch will kill running Plan Reviews month Im taking look two plans Jim Messer member STARS club Allegany NY Jims Ercoupe Piper Tomahawk unusual several respects thing both have tricycle landing gear often seen Giant Scale models groud handling takeoff landing characteristics trike gear can real help newcomers RC flying Another unusual feature method fuselage construction Formers hung straight piece pine used jig through center plane Planking stringers com plete structure jig piece removed result monocoque fuselage structure technique new has seldom used Giant Scale Both models designed start Quadra engine Plywood spruce bass pine used throughout structure balsa appropriate Cheaper foam-core board could used wing ribs some fuselage formers part numbered shown plans Instructions well-detailed materials list included Most building instruc tions right plans refer parts number numbers bit bewildering first long run simplify construction reduce probability errors Both aircraft -scale very similar specs Ercoupe spans 90-in 1250 sq wing area weighs 17 lb Toma hawk spans 100-in 1250 sq area 18-lb weight Outlines dimensions both very close scale except Tomahawk wing chord increased slightly improve its performance plans clearly drawn well detailed consists three sheets 3-ft 6-ft Price $2195 apiece plus postage shipped rolled mailing carton Available Jim Messers Quality Model Products 106 Valley View Drive Al legany NY 14706 Jim also offers complete kits both designs Jim says complete thats really what means Things like wheels propellers cockpit-detailing materials seldom cluded kits yull find two Ercoupe kit $21995 plus postage Tomahawk $23995 plus postage Ill starting Tomahawk soon Ill pass impressions kit Bob Beckman 8248 Holly Grove Court Ma nassas VA 22110 RC Pylon Racing/Hager Continued page 50 tallying final standings Two three people can local club contest large championship national competition will need help Whatever racing event should plan run least five rounds very important protect workers workers should always wear hard hats people number pylon should behind barricades number two three pylon 1 26 Model Aviation TWICE THE FUNELECTRIC CONTROL LINE MODELS Ever want have fun flying got Electroline Models new Twin Just sound two synchronized props will turn theres much fun awaiting fact twice fun free brochure models accessories write us today AVAILABLE ONLY FROM ELECTROLINE MODELS PO BOX 2503 BEVERLY HILLS CA 90213