Radio Control Scale Bob Dolly Wischer DESIGN YOUR OWN Building Scale models kits plans can very satisfying modelers prefer something rewarding airplane hasnt done quantity size desired persons follow another path satisfaction design ing building learning fly outstand ing aircraft attracts attention Originaldesign models also have better-than-average contest-winning potential example half top-placing Nats RC Scale en tries originals Any number Scale enthusiasts have thought seriously about build ing rare bird arent quite certain methods procedures project forever postponed lack information incen tive lacking because overwhelming number kits plans waiting built Some us have gathered photos books magazines three-view drawings lives will probably never enough time build models sources other methods proceeding design build have own system usually originates three-view drawing some cases several drawings able make comparisons between photos determine source valid Direct measurement full-size prototype shortest route finding errors three-view drawings begin calculations determining models eventual size overall dimensions Too small wing loading increases because fixed weight engine con trol equipment Too large becomes monster hard transport needs large engine powerful servos Other limit ing factors show up early calculations cowlings too small engine too large prop diameter too much airplane chosen engine lack internal space servos lots minor details such unavailable wheels list critical dimensions variation scale ratio such multiplica tion factor three-view wingspan chord wing area cowl size wheel diameter fuselage width length dimen sions found simple hand calculator After running through critical dimen sions half-dozen different-size models choose size suits engine will fit within rules weight limits guessing weights lean toward high side recent models have tended larger rather smaller Calculations using scale ratios A A, etc useful actual dimensions full-size aircraft hand either measurements made personally found drawing Most important use decimal-inch scale rule take dimensions three-view drawing can inserted directly calculator need convert inch fractions decimals desirable 12-in decimal-inch scale rule divided increments 02 inch have yet find steel tape such graduations multiplication factor factor found dividing model wingspan three-view span used constant calculator subsequent mathematics make drawings shelf paper 48-in wide length fit workbench Measurements three-view taken basic lines such rear surface prop spinner wing leading edge thrust line top fuselage fuselage centerline datum line few pencil lines may need drawn three-view reference both horizontally vertically Prominent vertical lines fuselage side view firewall wing leading trailing edges door window lines cockpit edges tail surface edges tail post begin layout measuring rearward along fuselage reference line com Typical scratch-buiidersldeslgners art Miles Hawk 1 Larry Pierce /4scaie Power Quadra 35 weighs 21 ib Unusual finishing technique siikspan paper treated polyester resIn polyurethane paint Charile Chambers R keeps Im proving F9F8 Cougar now uses Rossi 61 power drive its Cook fan unit Operating features Inciude fiaps retracts speed b rakes sliding canopy lights Model spans 47 weighs 11A lb Finish Includes K&B satin clear over acrylic lacquer BIplane department Maurice Northcotts %scale Fairey Swordfish 1 spans 60 weIghs 71 lb Power Veco 61 British builder used nylon coveringrarely seen nowadays US Photo Scale meet Abi ngdon England Steve Orts scratch-built Smith Miniplane R balsaandply delight Finish K&B Superpoxy over Super Coverite Power 05 61 46 Model Aviation mon point such rear surface spin ner vertical lines Multiply dimension enlargement factor same vertical dimensions above below reference line plot fuselage outline Wing tail surface outlines enlarged three-view similar manner using leading edge straight wing spar lines tapered wing no internal structure lines visible draw pencil lines refer ence example line could drawn tip tip tail surfaces use hinge line reference drawing wing tail outlines quite often curved dont assume shape drawn around plastic irregular curves curves actually radius succession radii drawn centers long sweeping curve always try first find center three-view After center has found transfer its location enlarged drawing Use thumb tack center string wrapped around pencil large compass draw curveor use strip cardboard holes punched tack pencil point method may crude isnt need ex treme accuracy plotting outlines Mark radius centers boldly drawing used again later cutting balsa outline shape drawing curved outline truly elliptical Spitfire Thunderbolt wings examples transfer shape threeview enlarged drawing small incre ments Draw series lines right angles wing reference line three-view Reproduce lines model drawing us ing multiplication factor merely construction-plotting lines need position wing ribs Measure along line reference line curved outline multiplying dimension factor Us ing constant factor calculator process quickly accomplished actually needing matter few minutes plot outline points points joined using ships curve have several plastic curves homemade Ignore minor inaccuracies points dont line up exactly wont show up model gross errors curve sharp such wing tips plotting lines should numerous shorter tervals make things easier determine whether sharp curve tip drawn three-view ordinary compass cases simple radius pair radii join spar line Older airplanes surprisingly few curvesand almost no compound curves exception nose shape Lines having appearance being curved actually succession straights joined end end Modern aircraft jets particular loaded compound curves mark highlytooled machined external structure After outlines have established roughly determine spaces will oc cupied necessary model parts example sketch fuel tank engine shape servo locations aileron bellcranks several alter native battery-pack locations since pack may need shifted balancing model isnt too early estimate muffler could placed internal model structure can drawn around work ing elements about time a few fuselage cross sec Continued page 150 9 TARBaby Especially Turn-around 850 sq 1204 cycle powered Ron Chidgey design smooth solid performer Rib templates computer plotted Plans construction hints -$1195 TIGER TAIL 4 best series little larger Chidgeys latest lighter slower retains honest flight characteristics its predecessors Plans construction hints $995 Coming Soon! Tiger Tail 45 Delux Kit An new Tiger Tail tor 120 Four Strokes balsa kit machined wood parts complete hardware package Call now price delivery IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes guess work out ot trimming Out airplane quality tool com plete instructions log book carrying case $795 SEE YOUR DEALER OR ORDER DIRECT Digital LCD tachometer has dual scale lOX-bOX stable RPM readout Full scale voltmeter can used check/cycle TXRX battery combos Reads load up 20 voltsand DC ammeter used check servo current Will find worn binding stalled servo conditions w/SCA1 Battery included 9Odaywarranty 4 Function ACCU-TACH $8995 ACCESSORIES OSAl -Quarter Scale Adapter ATi & AT2-500ma load 995 SCAl -Servo Current Adapter Airtronics Futaba Kraft.995 TLB1-Voltage Probes.295 CC1-Carrying Case will hold ACCU-TACH accessories.1295 Send check MO NorCal Avionics A-B Tech Inc 5689 Glasgow Troy MI 48098 313 828-8210 Ml add 4% tax Add $3 S&H See dealer first WING TUBE & SOCKETS Aluminum alloy tubing tor plugin wings Included pair special slip-fit phenoltc sockets build wing structure Now size models 7/5 dis x 2 $ 885 1diax2-$ 995 1diax3-$1495 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage new 60s 17MM rear bearing Both SLEEVE PULLER $795for BEARING PULLER $695 $1395 TRANSMITTER CASE An inexpensive rugged molded case protect es pensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim locking clasp $1895GP Gator RIC Products 3713 Pompano Drive Pensacola FL 32514 Phone 904 4768839 dune 1986 47 INCLUDE $150 PER ITEM FOR UPS from 5 FOUR CYCLE ENGINE MOUNT Cast atunwtum alloy Graund 9#sssst Mn Esight polish NrIstaed Socket cop screws 6ciudSd DRULED AND TAPPED FOR No JT20 OS MAX FS 20 No iT-dOUrrdrtisd tor 2t-AO NoJT-AttfVT2l No J1-42ENVA 35-40 AC No 11-43SAITO PA 30 No11-AdOSMAXPS4O No IT-ASSAIIO PA 40-AS No 11-46ENVA 46 AC No1149tfVlA9 No JT60Undrilled 60-90 No41-6106 MAX PS61 No 41-6205 MAX P560-75-90 No JT-6AENYA 60-8090-120 AC No JT-65SAtTO PA 65 No 11120 Undstled tar 120 No 11-121 ENYA 8 120 PC No 41122 OS MAX PS 120 No 41 -123 SAITO PA 120 No 41125 Super TrO 353000 GIANT ENGINE MUFFLERS availableMalched engine 1a pipe extensions mounting Uclts inctided hobby ShopORDIR DIRICT for AILAS 46 BUlLY COBRA KAWASAXI KIOOIIZ SACH-DOMLUR SUPER return UPS shipment c-oat OLsssts35 jiont flsss jir5i jiosa ousasaji jiZ34 055000 GSa jiT5r Atist OR jio ji35 60ji45 zEtottis 5 mm ji603 00055000058555 ji535815513 2560 SIDE MOUNT MUFFLERS tot PIllS CAP 21 CESSNA 150 etc S lrfl toroere Co uNIVERSAL IN-COWL AIRCRAFT MUFFLERS r 19-4045-6075-13 engines Most versatile mufflers ever offered Designed tit inside cowls limited space can also ssed HEUCOPTERS BOATS UPRIGHT INVERTED SIDE mounted engines Exhaust tubes point almost direction Worm drive clamp tor universal mounting can bolted directly engine INCtUOSso Echocireeiescn wilt CiosrOr toe OtE c25im mattiol oigrrnent plot, rite eta ro,rro ICIew 5850 sassc aimOIMENSIOOEIII iLl -C--l IGNO ENGINE iraus in-tO1800 IS 45-60am am jima UPRIG5II5IDEI INOSETED jiasa ia-osiaoo jisaasmmm jima isis4560 INWETIS ENGINEE0GI1IJii 30853 19605860No il-Ask JT-55385-601900 MAiLOROE5ttSeadd555IsSUPS5060 00-9037513 aim sitippinS Owol MO ViSA MCOI coo accepted Add 500 TIara tOt coD FREE CA ENGINE TESTING STANDS cast Aluminum l mstralnlng No TOSS OaekAs5Sp sesse No 60P2300 45-As No ITS 55 RC Scale/Wischers Continued page 47 tions sketched certain parts will fit across fuselage width Plot sec tion shapes same manner other curves three-view Important bulkheads firewall engine mounting another wing leading edge preferably plywood other load-carrying member wing trailing edge greatest trouble source model design built-in overweight condition Adding structure using heavier material sections necessary can produce model must fly fast become airborne resulting control problems Concentrate weight points needing extra strength hard materials meet balsa engine mount commonly used Scale models aluminum fastened plywood firewall ply epoxy-glued balsa frame large-area balsa gussets Landing gears also require special attention steel connects balsa structure inter mediate parts hardwood ply will spread loads landing shock Tires alone shouldnt depended upon absorb shock gear springs preferred Telescoping struts internal springs sometimes used full-size aircraft preserve Scale appearance function Fastening such members wing fuselage demands load spread over area strut should set hardwood block anchored adjacent structure steel bolts Glue alone will withstand repeated landing shock music-wire gear will endure unlimited number landings should tied ply steel straps machine screws necessary weight Avoid adding weight elsewhere Construction technique information can found examining magazine drawings kits modeler designing own Scale air craft first time will have previous experience kits scratch-building design efforts shamelessly borrow con struction ideas everyone assume others likewise Internal structure use foam wings step-by-step construction procedures have detailed discussion th model magazines modeler does own designing truly innovative ideas begin materialize therein lies real satisf Lction None us knew capabilities until made first bold step model desigt Hobt Hobl forml mi craft ypoxy colors Pettit Paint Co maker ypoxy products has published series ilas over past several years telling various shades used military air f nations involved WW II latest probably last series Ger man Luftwaffe insignia marking colors cross swastika insignia black white standard Hobbypoxy HB1 Black HlO White may used Note however insignia painted semi-gloss finish produced slight sheen Hobbypoxy suggests using combina tion gloss hardener flat hardener about 50-50 mix should produce effect Registration unit code markings flat finish common being black white red yellow blue formulas presented 04 Yellow 23 Red 24 Dark Blue Luftwaffe colors Yellow 0440 parts H49 Cub Yellow two parts H70 Gray part H65 Bright Red Red 2332 parts H65 Bright Red eight parts H66 Dark Red part H47 Bright Yellow part H1O White Dark Blue 24three parts H24 Dark Blue five parts H65 Bright Red part HlO White Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 49 disqualifications manoeuvres outside box As already know dont care Turnaround pattern competitor can will participate judge sup porter concept think Jim Ewing has some excellent ideas Comments Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Old-Timers/Mathews Continued page 51 tion Try build models eight oz per sq ft minimum-wing-loading rules Building light partly state mindyou must constantly aware weight little little adds up overweight model Keep postal diet scale Continued page 152 150 Model Aviation 600 800 1000 1000 1000 1000 1000 1000 1200 1100 1300 1300 1300 1300 1600 2000 1800 1800 1800 OUR FACTORY BURNED DOWN ON FEB 2 1986 WE NOW HAVE NEW BUILDING DELIVERING ORDERS AND SOON WILL BE BACK TO FULL PRODUCTION WE APPRECIATE YOUR SUPPORT IN THE PAST AND HOPE THAT IT WILL CONTINUE LARGE CATALOG OF QUALITY SUPPLIES KITS AND PLANS FOR RUBBER POWERED MODELS ALSO CO-2 ENGINES BLIMPS ELECTRIC AND MORE FOU CdT4LOG $299 O NEW NO 619 448-1818 ymers N FREE FLIGHT UC SPEED RACING COMBAT EPOXY-GLASS PROPS CONTINUOUS LENGTH AS LOW AS $125 EA FREE BROCHURE J &JleO Div Pops Props Inc J/I 09 Crescent Sunnyside WA 98944 509-837-5983
Edition: Model Aviation - 1986/06
Page Numbers: 46, 47, 150
Radio Control Scale Bob Dolly Wischer DESIGN YOUR OWN Building Scale models kits plans can very satisfying modelers prefer something rewarding airplane hasnt done quantity size desired persons follow another path satisfaction design ing building learning fly outstand ing aircraft attracts attention Originaldesign models also have better-than-average contest-winning potential example half top-placing Nats RC Scale en tries originals Any number Scale enthusiasts have thought seriously about build ing rare bird arent quite certain methods procedures project forever postponed lack information incen tive lacking because overwhelming number kits plans waiting built Some us have gathered photos books magazines three-view drawings lives will probably never enough time build models sources other methods proceeding design build have own system usually originates three-view drawing some cases several drawings able make comparisons between photos determine source valid Direct measurement full-size prototype shortest route finding errors three-view drawings begin calculations determining models eventual size overall dimensions Too small wing loading increases because fixed weight engine con trol equipment Too large becomes monster hard transport needs large engine powerful servos Other limit ing factors show up early calculations cowlings too small engine too large prop diameter too much airplane chosen engine lack internal space servos lots minor details such unavailable wheels list critical dimensions variation scale ratio such multiplica tion factor three-view wingspan chord wing area cowl size wheel diameter fuselage width length dimen sions found simple hand calculator After running through critical dimen sions half-dozen different-size models choose size suits engine will fit within rules weight limits guessing weights lean toward high side recent models have tended larger rather smaller Calculations using scale ratios A A, etc useful actual dimensions full-size aircraft hand either measurements made personally found drawing Most important use decimal-inch scale rule take dimensions three-view drawing can inserted directly calculator need convert inch fractions decimals desirable 12-in decimal-inch scale rule divided increments 02 inch have yet find steel tape such graduations multiplication factor factor found dividing model wingspan three-view span used constant calculator subsequent mathematics make drawings shelf paper 48-in wide length fit workbench Measurements three-view taken basic lines such rear surface prop spinner wing leading edge thrust line top fuselage fuselage centerline datum line few pencil lines may need drawn three-view reference both horizontally vertically Prominent vertical lines fuselage side view firewall wing leading trailing edges door window lines cockpit edges tail surface edges tail post begin layout measuring rearward along fuselage reference line com Typical scratch-buiidersldeslgners art Miles Hawk 1 Larry Pierce /4scaie Power Quadra 35 weighs 21 ib Unusual finishing technique siikspan paper treated polyester resIn polyurethane paint Charile Chambers R keeps Im proving F9F8 Cougar now uses Rossi 61 power drive its Cook fan unit Operating features Inciude fiaps retracts speed b rakes sliding canopy lights Model spans 47 weighs 11A lb Finish Includes K&B satin clear over acrylic lacquer BIplane department Maurice Northcotts %scale Fairey Swordfish 1 spans 60 weIghs 71 lb Power Veco 61 British builder used nylon coveringrarely seen nowadays US Photo Scale meet Abi ngdon England Steve Orts scratch-built Smith Miniplane R balsaandply delight Finish K&B Superpoxy over Super Coverite Power 05 61 46 Model Aviation mon point such rear surface spin ner vertical lines Multiply dimension enlargement factor same vertical dimensions above below reference line plot fuselage outline Wing tail surface outlines enlarged three-view similar manner using leading edge straight wing spar lines tapered wing no internal structure lines visible draw pencil lines refer ence example line could drawn tip tip tail surfaces use hinge line reference drawing wing tail outlines quite often curved dont assume shape drawn around plastic irregular curves curves actually radius succession radii drawn centers long sweeping curve always try first find center three-view After center has found transfer its location enlarged drawing Use thumb tack center string wrapped around pencil large compass draw curveor use strip cardboard holes punched tack pencil point method may crude isnt need ex treme accuracy plotting outlines Mark radius centers boldly drawing used again later cutting balsa outline shape drawing curved outline truly elliptical Spitfire Thunderbolt wings examples transfer shape threeview enlarged drawing small incre ments Draw series lines right angles wing reference line three-view Reproduce lines model drawing us ing multiplication factor merely construction-plotting lines need position wing ribs Measure along line reference line curved outline multiplying dimension factor Us ing constant factor calculator process quickly accomplished actually needing matter few minutes plot outline points points joined using ships curve have several plastic curves homemade Ignore minor inaccuracies points dont line up exactly wont show up model gross errors curve sharp such wing tips plotting lines should numerous shorter tervals make things easier determine whether sharp curve tip drawn three-view ordinary compass cases simple radius pair radii join spar line Older airplanes surprisingly few curvesand almost no compound curves exception nose shape Lines having appearance being curved actually succession straights joined end end Modern aircraft jets particular loaded compound curves mark highlytooled machined external structure After outlines have established roughly determine spaces will oc cupied necessary model parts example sketch fuel tank engine shape servo locations aileron bellcranks several alter native battery-pack locations since pack may need shifted balancing model isnt too early estimate muffler could placed internal model structure can drawn around work ing elements about time a few fuselage cross sec Continued page 150 9 TARBaby Especially Turn-around 850 sq 1204 cycle powered Ron Chidgey design smooth solid performer Rib templates computer plotted Plans construction hints -$1195 TIGER TAIL 4 best series little larger Chidgeys latest lighter slower retains honest flight characteristics its predecessors Plans construction hints $995 Coming Soon! Tiger Tail 45 Delux Kit An new Tiger Tail tor 120 Four Strokes balsa kit machined wood parts complete hardware package Call now price delivery IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes guess work out ot trimming Out airplane quality tool com plete instructions log book carrying case $795 SEE YOUR DEALER OR ORDER DIRECT Digital LCD tachometer has dual scale lOX-bOX stable RPM readout Full scale voltmeter can used check/cycle TXRX battery combos Reads load up 20 voltsand DC ammeter used check servo current Will find worn binding stalled servo conditions w/SCA1 Battery included 9Odaywarranty 4 Function ACCU-TACH $8995 ACCESSORIES OSAl -Quarter Scale Adapter ATi & AT2-500ma load 995 SCAl -Servo Current Adapter Airtronics Futaba Kraft.995 TLB1-Voltage Probes.295 CC1-Carrying Case will hold ACCU-TACH accessories.1295 Send check MO NorCal Avionics A-B Tech Inc 5689 Glasgow Troy MI 48098 313 828-8210 Ml add 4% tax Add $3 S&H See dealer first WING TUBE & SOCKETS Aluminum alloy tubing tor plugin wings Included pair special slip-fit phenoltc sockets build wing structure Now size models 7/5 dis x 2 $ 885 1diax2-$ 995 1diax3-$1495 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage new 60s 17MM rear bearing Both SLEEVE PULLER $795for BEARING PULLER $695 $1395 TRANSMITTER CASE An inexpensive rugged molded case protect es pensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim locking clasp $1895GP Gator RIC Products 3713 Pompano Drive Pensacola FL 32514 Phone 904 4768839 dune 1986 47 INCLUDE $150 PER ITEM FOR UPS from 5 FOUR CYCLE ENGINE MOUNT Cast atunwtum alloy Graund 9#sssst Mn Esight polish NrIstaed Socket cop screws 6ciudSd DRULED AND TAPPED FOR No JT20 OS MAX FS 20 No iT-dOUrrdrtisd tor 2t-AO NoJT-AttfVT2l No J1-42ENVA 35-40 AC No 11-43SAITO PA 30 No11-AdOSMAXPS4O No IT-ASSAIIO PA 40-AS No 11-46ENVA 46 AC No1149tfVlA9 No JT60Undrilled 60-90 No41-6106 MAX PS61 No 41-6205 MAX P560-75-90 No JT-6AENYA 60-8090-120 AC No JT-65SAtTO PA 65 No 11120 Undstled tar 120 No 11-121 ENYA 8 120 PC No 41122 OS MAX PS 120 No 41 -123 SAITO PA 120 No 41125 Super TrO 353000 GIANT ENGINE MUFFLERS availableMalched engine 1a pipe extensions mounting Uclts inctided hobby ShopORDIR DIRICT for AILAS 46 BUlLY COBRA KAWASAXI KIOOIIZ SACH-DOMLUR SUPER return UPS shipment c-oat OLsssts35 jiont flsss jir5i jiosa ousasaji jiZ34 055000 GSa jiT5r Atist OR jio ji35 60ji45 zEtottis 5 mm ji603 00055000058555 ji535815513 2560 SIDE MOUNT MUFFLERS tot PIllS CAP 21 CESSNA 150 etc S lrfl toroere Co uNIVERSAL IN-COWL AIRCRAFT MUFFLERS r 19-4045-6075-13 engines Most versatile mufflers ever offered Designed tit inside cowls limited space can also ssed HEUCOPTERS BOATS UPRIGHT INVERTED SIDE mounted engines Exhaust tubes point almost direction Worm drive clamp tor universal mounting can bolted directly engine INCtUOSso Echocireeiescn wilt CiosrOr toe OtE c25im mattiol oigrrnent plot, rite eta ro,rro ICIew 5850 sassc aimOIMENSIOOEIII iLl -C--l IGNO ENGINE iraus in-tO1800 IS 45-60am am jima UPRIG5II5IDEI INOSETED jiasa ia-osiaoo jisaasmmm jima isis4560 INWETIS ENGINEE0GI1IJii 30853 19605860No il-Ask JT-55385-601900 MAiLOROE5ttSeadd555IsSUPS5060 00-9037513 aim sitippinS Owol MO ViSA MCOI coo accepted Add 500 TIara tOt coD FREE CA ENGINE TESTING STANDS cast Aluminum l mstralnlng No TOSS OaekAs5Sp sesse No 60P2300 45-As No ITS 55 RC Scale/Wischers Continued page 47 tions sketched certain parts will fit across fuselage width Plot sec tion shapes same manner other curves three-view Important bulkheads firewall engine mounting another wing leading edge preferably plywood other load-carrying member wing trailing edge greatest trouble source model design built-in overweight condition Adding structure using heavier material sections necessary can produce model must fly fast become airborne resulting control problems Concentrate weight points needing extra strength hard materials meet balsa engine mount commonly used Scale models aluminum fastened plywood firewall ply epoxy-glued balsa frame large-area balsa gussets Landing gears also require special attention steel connects balsa structure inter mediate parts hardwood ply will spread loads landing shock Tires alone shouldnt depended upon absorb shock gear springs preferred Telescoping struts internal springs sometimes used full-size aircraft preserve Scale appearance function Fastening such members wing fuselage demands load spread over area strut should set hardwood block anchored adjacent structure steel bolts Glue alone will withstand repeated landing shock music-wire gear will endure unlimited number landings should tied ply steel straps machine screws necessary weight Avoid adding weight elsewhere Construction technique information can found examining magazine drawings kits modeler designing own Scale air craft first time will have previous experience kits scratch-building design efforts shamelessly borrow con struction ideas everyone assume others likewise Internal structure use foam wings step-by-step construction procedures have detailed discussion th model magazines modeler does own designing truly innovative ideas begin materialize therein lies real satisf Lction None us knew capabilities until made first bold step model desigt Hobt Hobl forml mi craft ypoxy colors Pettit Paint Co maker ypoxy products has published series ilas over past several years telling various shades used military air f nations involved WW II latest probably last series Ger man Luftwaffe insignia marking colors cross swastika insignia black white standard Hobbypoxy HB1 Black HlO White may used Note however insignia painted semi-gloss finish produced slight sheen Hobbypoxy suggests using combina tion gloss hardener flat hardener about 50-50 mix should produce effect Registration unit code markings flat finish common being black white red yellow blue formulas presented 04 Yellow 23 Red 24 Dark Blue Luftwaffe colors Yellow 0440 parts H49 Cub Yellow two parts H70 Gray part H65 Bright Red Red 2332 parts H65 Bright Red eight parts H66 Dark Red part H47 Bright Yellow part H1O White Dark Blue 24three parts H24 Dark Blue five parts H65 Bright Red part HlO White Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 49 disqualifications manoeuvres outside box As already know dont care Turnaround pattern competitor can will participate judge sup porter concept think Jim Ewing has some excellent ideas Comments Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Old-Timers/Mathews Continued page 51 tion Try build models eight oz per sq ft minimum-wing-loading rules Building light partly state mindyou must constantly aware weight little little adds up overweight model Keep postal diet scale Continued page 152 150 Model Aviation 600 800 1000 1000 1000 1000 1000 1000 1200 1100 1300 1300 1300 1300 1600 2000 1800 1800 1800 OUR FACTORY BURNED DOWN ON FEB 2 1986 WE NOW HAVE NEW BUILDING DELIVERING ORDERS AND SOON WILL BE BACK TO FULL PRODUCTION WE APPRECIATE YOUR SUPPORT IN THE PAST AND HOPE THAT IT WILL CONTINUE LARGE CATALOG OF QUALITY SUPPLIES KITS AND PLANS FOR RUBBER POWERED MODELS ALSO CO-2 ENGINES BLIMPS ELECTRIC AND MORE FOU CdT4LOG $299 O NEW NO 619 448-1818 ymers N FREE FLIGHT UC SPEED RACING COMBAT EPOXY-GLASS PROPS CONTINUOUS LENGTH AS LOW AS $125 EA FREE BROCHURE J &JleO Div Pops Props Inc J/I 09 Crescent Sunnyside WA 98944 509-837-5983
Edition: Model Aviation - 1986/06
Page Numbers: 46, 47, 150
Radio Control Scale Bob Dolly Wischer DESIGN YOUR OWN Building Scale models kits plans can very satisfying modelers prefer something rewarding airplane hasnt done quantity size desired persons follow another path satisfaction design ing building learning fly outstand ing aircraft attracts attention Originaldesign models also have better-than-average contest-winning potential example half top-placing Nats RC Scale en tries originals Any number Scale enthusiasts have thought seriously about build ing rare bird arent quite certain methods procedures project forever postponed lack information incen tive lacking because overwhelming number kits plans waiting built Some us have gathered photos books magazines three-view drawings lives will probably never enough time build models sources other methods proceeding design build have own system usually originates three-view drawing some cases several drawings able make comparisons between photos determine source valid Direct measurement full-size prototype shortest route finding errors three-view drawings begin calculations determining models eventual size overall dimensions Too small wing loading increases because fixed weight engine con trol equipment Too large becomes monster hard transport needs large engine powerful servos Other limit ing factors show up early calculations cowlings too small engine too large prop diameter too much airplane chosen engine lack internal space servos lots minor details such unavailable wheels list critical dimensions variation scale ratio such multiplica tion factor three-view wingspan chord wing area cowl size wheel diameter fuselage width length dimen sions found simple hand calculator After running through critical dimen sions half-dozen different-size models choose size suits engine will fit within rules weight limits guessing weights lean toward high side recent models have tended larger rather smaller Calculations using scale ratios A A, etc useful actual dimensions full-size aircraft hand either measurements made personally found drawing Most important use decimal-inch scale rule take dimensions three-view drawing can inserted directly calculator need convert inch fractions decimals desirable 12-in decimal-inch scale rule divided increments 02 inch have yet find steel tape such graduations multiplication factor factor found dividing model wingspan three-view span used constant calculator subsequent mathematics make drawings shelf paper 48-in wide length fit workbench Measurements three-view taken basic lines such rear surface prop spinner wing leading edge thrust line top fuselage fuselage centerline datum line few pencil lines may need drawn three-view reference both horizontally vertically Prominent vertical lines fuselage side view firewall wing leading trailing edges door window lines cockpit edges tail surface edges tail post begin layout measuring rearward along fuselage reference line com Typical scratch-buiidersldeslgners art Miles Hawk 1 Larry Pierce /4scaie Power Quadra 35 weighs 21 ib Unusual finishing technique siikspan paper treated polyester resIn polyurethane paint Charile Chambers R keeps Im proving F9F8 Cougar now uses Rossi 61 power drive its Cook fan unit Operating features Inciude fiaps retracts speed b rakes sliding canopy lights Model spans 47 weighs 11A lb Finish Includes K&B satin clear over acrylic lacquer BIplane department Maurice Northcotts %scale Fairey Swordfish 1 spans 60 weIghs 71 lb Power Veco 61 British builder used nylon coveringrarely seen nowadays US Photo Scale meet Abi ngdon England Steve Orts scratch-built Smith Miniplane R balsaandply delight Finish K&B Superpoxy over Super Coverite Power 05 61 46 Model Aviation mon point such rear surface spin ner vertical lines Multiply dimension enlargement factor same vertical dimensions above below reference line plot fuselage outline Wing tail surface outlines enlarged three-view similar manner using leading edge straight wing spar lines tapered wing no internal structure lines visible draw pencil lines refer ence example line could drawn tip tip tail surfaces use hinge line reference drawing wing tail outlines quite often curved dont assume shape drawn around plastic irregular curves curves actually radius succession radii drawn centers long sweeping curve always try first find center three-view After center has found transfer its location enlarged drawing Use thumb tack center string wrapped around pencil large compass draw curveor use strip cardboard holes punched tack pencil point method may crude isnt need ex treme accuracy plotting outlines Mark radius centers boldly drawing used again later cutting balsa outline shape drawing curved outline truly elliptical Spitfire Thunderbolt wings examples transfer shape threeview enlarged drawing small incre ments Draw series lines right angles wing reference line three-view Reproduce lines model drawing us ing multiplication factor merely construction-plotting lines need position wing ribs Measure along line reference line curved outline multiplying dimension factor Us ing constant factor calculator process quickly accomplished actually needing matter few minutes plot outline points points joined using ships curve have several plastic curves homemade Ignore minor inaccuracies points dont line up exactly wont show up model gross errors curve sharp such wing tips plotting lines should numerous shorter tervals make things easier determine whether sharp curve tip drawn three-view ordinary compass cases simple radius pair radii join spar line Older airplanes surprisingly few curvesand almost no compound curves exception nose shape Lines having appearance being curved actually succession straights joined end end Modern aircraft jets particular loaded compound curves mark highlytooled machined external structure After outlines have established roughly determine spaces will oc cupied necessary model parts example sketch fuel tank engine shape servo locations aileron bellcranks several alter native battery-pack locations since pack may need shifted balancing model isnt too early estimate muffler could placed internal model structure can drawn around work ing elements about time a few fuselage cross sec Continued page 150 9 TARBaby Especially Turn-around 850 sq 1204 cycle powered Ron Chidgey design smooth solid performer Rib templates computer plotted Plans construction hints -$1195 TIGER TAIL 4 best series little larger Chidgeys latest lighter slower retains honest flight characteristics its predecessors Plans construction hints $995 Coming Soon! Tiger Tail 45 Delux Kit An new Tiger Tail tor 120 Four Strokes balsa kit machined wood parts complete hardware package Call now price delivery IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes guess work out ot trimming Out airplane quality tool com plete instructions log book carrying case $795 SEE YOUR DEALER OR ORDER DIRECT Digital LCD tachometer has dual scale lOX-bOX stable RPM readout Full scale voltmeter can used check/cycle TXRX battery combos Reads load up 20 voltsand DC ammeter used check servo current Will find worn binding stalled servo conditions w/SCA1 Battery included 9Odaywarranty 4 Function ACCU-TACH $8995 ACCESSORIES OSAl -Quarter Scale Adapter ATi & AT2-500ma load 995 SCAl -Servo Current Adapter Airtronics Futaba Kraft.995 TLB1-Voltage Probes.295 CC1-Carrying Case will hold ACCU-TACH accessories.1295 Send check MO NorCal Avionics A-B Tech Inc 5689 Glasgow Troy MI 48098 313 828-8210 Ml add 4% tax Add $3 S&H See dealer first WING TUBE & SOCKETS Aluminum alloy tubing tor plugin wings Included pair special slip-fit phenoltc sockets build wing structure Now size models 7/5 dis x 2 $ 885 1diax2-$ 995 1diax3-$1495 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily damage new 60s 17MM rear bearing Both SLEEVE PULLER $795for BEARING PULLER $695 $1395 TRANSMITTER CASE An inexpensive rugged molded case protect es pensive transmitter both two stick single stick transmitters Brown leather grain aluminum trim locking clasp $1895GP Gator RIC Products 3713 Pompano Drive Pensacola FL 32514 Phone 904 4768839 dune 1986 47 INCLUDE $150 PER ITEM FOR UPS from 5 FOUR CYCLE ENGINE MOUNT Cast atunwtum alloy Graund 9#sssst Mn Esight polish NrIstaed Socket cop screws 6ciudSd DRULED AND TAPPED FOR No JT20 OS MAX FS 20 No iT-dOUrrdrtisd tor 2t-AO NoJT-AttfVT2l No J1-42ENVA 35-40 AC No 11-43SAITO PA 30 No11-AdOSMAXPS4O No IT-ASSAIIO PA 40-AS No 11-46ENVA 46 AC No1149tfVlA9 No JT60Undrilled 60-90 No41-6106 MAX PS61 No 41-6205 MAX P560-75-90 No JT-6AENYA 60-8090-120 AC No JT-65SAtTO PA 65 No 11120 Undstled tar 120 No 11-121 ENYA 8 120 PC No 41122 OS MAX PS 120 No 41 -123 SAITO PA 120 No 41125 Super TrO 353000 GIANT ENGINE MUFFLERS availableMalched engine 1a pipe extensions mounting Uclts inctided hobby ShopORDIR DIRICT for AILAS 46 BUlLY COBRA KAWASAXI KIOOIIZ SACH-DOMLUR SUPER return UPS shipment c-oat OLsssts35 jiont flsss jir5i jiosa ousasaji jiZ34 055000 GSa jiT5r Atist OR jio ji35 60ji45 zEtottis 5 mm ji603 00055000058555 ji535815513 2560 SIDE MOUNT MUFFLERS tot PIllS CAP 21 CESSNA 150 etc S lrfl toroere Co uNIVERSAL IN-COWL AIRCRAFT MUFFLERS r 19-4045-6075-13 engines Most versatile mufflers ever offered Designed tit inside cowls limited space can also ssed HEUCOPTERS BOATS UPRIGHT INVERTED SIDE mounted engines Exhaust tubes point almost direction Worm drive clamp tor universal mounting can bolted directly engine INCtUOSso Echocireeiescn wilt CiosrOr toe OtE c25im mattiol oigrrnent plot, rite eta ro,rro ICIew 5850 sassc aimOIMENSIOOEIII iLl -C--l IGNO ENGINE iraus in-tO1800 IS 45-60am am jima UPRIG5II5IDEI INOSETED jiasa ia-osiaoo jisaasmmm jima isis4560 INWETIS ENGINEE0GI1IJii 30853 19605860No il-Ask JT-55385-601900 MAiLOROE5ttSeadd555IsSUPS5060 00-9037513 aim sitippinS Owol MO ViSA MCOI coo accepted Add 500 TIara tOt coD FREE CA ENGINE TESTING STANDS cast Aluminum l mstralnlng No TOSS OaekAs5Sp sesse No 60P2300 45-As No ITS 55 RC Scale/Wischers Continued page 47 tions sketched certain parts will fit across fuselage width Plot sec tion shapes same manner other curves three-view Important bulkheads firewall engine mounting another wing leading edge preferably plywood other load-carrying member wing trailing edge greatest trouble source model design built-in overweight condition Adding structure using heavier material sections necessary can produce model must fly fast become airborne resulting control problems Concentrate weight points needing extra strength hard materials meet balsa engine mount commonly used Scale models aluminum fastened plywood firewall ply epoxy-glued balsa frame large-area balsa gussets Landing gears also require special attention steel connects balsa structure inter mediate parts hardwood ply will spread loads landing shock Tires alone shouldnt depended upon absorb shock gear springs preferred Telescoping struts internal springs sometimes used full-size aircraft preserve Scale appearance function Fastening such members wing fuselage demands load spread over area strut should set hardwood block anchored adjacent structure steel bolts Glue alone will withstand repeated landing shock music-wire gear will endure unlimited number landings should tied ply steel straps machine screws necessary weight Avoid adding weight elsewhere Construction technique information can found examining magazine drawings kits modeler designing own Scale air craft first time will have previous experience kits scratch-building design efforts shamelessly borrow con struction ideas everyone assume others likewise Internal structure use foam wings step-by-step construction procedures have detailed discussion th model magazines modeler does own designing truly innovative ideas begin materialize therein lies real satisf Lction None us knew capabilities until made first bold step model desigt Hobt Hobl forml mi craft ypoxy colors Pettit Paint Co maker ypoxy products has published series ilas over past several years telling various shades used military air f nations involved WW II latest probably last series Ger man Luftwaffe insignia marking colors cross swastika insignia black white standard Hobbypoxy HB1 Black HlO White may used Note however insignia painted semi-gloss finish produced slight sheen Hobbypoxy suggests using combina tion gloss hardener flat hardener about 50-50 mix should produce effect Registration unit code markings flat finish common being black white red yellow blue formulas presented 04 Yellow 23 Red 24 Dark Blue Luftwaffe colors Yellow 0440 parts H49 Cub Yellow two parts H70 Gray part H65 Bright Red Red 2332 parts H65 Bright Red eight parts H66 Dark Red part H47 Bright Yellow part H1O White Dark Blue 24three parts H24 Dark Blue five parts H65 Bright Red part HlO White Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 49 disqualifications manoeuvres outside box As already know dont care Turnaround pattern competitor can will participate judge sup porter concept think Jim Ewing has some excellent ideas Comments Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Old-Timers/Mathews Continued page 51 tion Try build models eight oz per sq ft minimum-wing-loading rules Building light partly state mindyou must constantly aware weight little little adds up overweight model Keep postal diet scale Continued page 152 150 Model Aviation 600 800 1000 1000 1000 1000 1000 1000 1200 1100 1300 1300 1300 1300 1600 2000 1800 1800 1800 OUR FACTORY BURNED DOWN ON FEB 2 1986 WE NOW HAVE NEW BUILDING DELIVERING ORDERS AND SOON WILL BE BACK TO FULL PRODUCTION WE APPRECIATE YOUR SUPPORT IN THE PAST AND HOPE THAT IT WILL CONTINUE LARGE CATALOG OF QUALITY SUPPLIES KITS AND PLANS FOR RUBBER POWERED MODELS ALSO CO-2 ENGINES BLIMPS ELECTRIC AND MORE FOU CdT4LOG $299 O NEW NO 619 448-1818 ymers N FREE FLIGHT UC SPEED RACING COMBAT EPOXY-GLASS PROPS CONTINUOUS LENGTH AS LOW AS $125 EA FREE BROCHURE J &JleO Div Pops Props Inc J/I 09 Crescent Sunnyside WA 98944 509-837-5983