Pho s o shows no necessa p ot completed kits P47 Military Scale $180 INCLUDES Top Flight P-47 kit Rhom retracts Aerosport 6 channel radio 5 servos Fox Eagle 60 engine J-3 CUB Quarter Scale $227 INCLUDESDud Nosen 1/4 scale J-3 Cub kit Kraft 4 channel radio rvos Quadra engine mount & props $212 Super Hustler engine SUPER KAOS Fast & Fun $185 INCLUDES Bridi Super Kaos kit Proline 5 channel radio 4 servos OX Max 60 engine $205 Rhom retracts items shown plus HUNDREDS others individually offered sale recent issues Hobby Swap News model en thusiasts 'Used Equipment Guide BuySell-Trade first ad free 50 words max subscription $10/yr 10 issues $19/2yr $2713 yr Add $3/yr 1st class mail Canada & Mexico musf use 1st class rates other countries write firsf MC & Visa Accepted include numbers expiration date Expect 4 8 weeks delivery 1st issue address changes Submit free ad B&W photo $2 extra subscription orders Hobby Swap News Dept AR-3 PO Box 834 Santa Maria CA 93456 LOWERING THE COST OF HAVING FUN etters t$e ca7tcr letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Gas Power Electric Spitfire am very impressed Electric Spitfire October 1981 ModelAviation However have couple questions am currently flying General Skyfarer 6-ft span fixed rudders twin tail controls aileron elevator throttle nose wheel coupled aileron servo All-up weight 6 lb 700 sq area amusing Enya 29 swinging 1-4 prop 2-in spinner gets off very well pavement will loop rolls still consider underpowered should like very much build Spitfire have ST 23 has very little time seems well 9-6 10-4 questiolt What prop diameter pitch 23 version 3k-in spinner doesnt leave much blade sticking out realize Spitfire has extra 190 sq iii over Skyfarer 5 lb wing loading figures about 8 oz Skyfarer close 15 Based charts Jack Bums 1976 Model Aviation Spitfire falls lightglider area andthe Skyfarer inthe heavy glider area article Spit mentions swinging 1213-14 diameter 8 pitch prop electric Please advise 23 engine should go OS 35 Don Boardman Swanton VT Designer/author Don Si-till responds flew Spitfire both ST23 OS30 good success Ipreferred OS because little pep lower reliable idle used 10-34propon the23 used 10-4s l1-4s 30 worked well 3-in spinner would recommend 35 want little aerobatic peiformance 23 however will fly Spit welleven bit sedately Wants Electric Power Specs think AMA President John Griggs pitch merits electric-powered model aircraft recently extremely sound farsighted Considering publics dislike noisy glow engines especially members fly planes close residential areas sup port electric-powered model flying wise. very wise indeed However manufacturers electric propulsion motors model alrcraft use continue fall provide serious modeler products optimum designed ratingsparticularly motors voltage wattage rating efforts expand interest electric flying win enthusiasts forsilent flying may well prove less productive might wish short serious model builder hesitate invest hard-earned dollars electric flight system presently have Astro Flight 05 RC flying because current manufacturers systems provide sufficient technical information motors As much might wish capture entire battery-supply-and-sales portion area entirely themselves individually short-nm advantage might kill overall growth use type power systems future Dr Cy Stow Conyers GA Since Doug Prat4 MA assistant editor has good bit experience electricpowered models called him thoughts matters Dr Stow raise Heres what Doug says Dr Stow has very good point folks manufacture glow ignition make available kinds technical data products growing interest electric propulsion its high time some hard engineering data Bob Bouchers book Silent Revolution fine manualfor beginner new hot-wind motors high-voltage battery packs coming mar kei need specifics General Electric publishes applications handbook Ni-Cd batteries extremely usefiik can purchased Ace RCsee January Product Review section page 50 us would like see manufacturers engineering data print Electric propulsion works everyone admits now need know hows whys Common Meeting Ground very pleased see construction article plans Pieces page 64 January ModelAviation release coincided start 1981-82 Indoor model program Kansas City well received Pieces obviously good design its records construction article Walt Van Gorder well done have found Indoor models can provide common meeting ground Radio Control Free Flight Control Line interests Thank helping promote Indoor models Roger J Schroeder Overland Park KS Weve got admit looking calendar scheduled Pieces Indoor Easy B construction article Peanut Scale another activitiy much overlap interest recommend taking look Fury Peanut Scale issue Intermeshing Twin-Rotor Autoglro article Lets Talk About RC Auto giro Jack Headiey November 1981 MA author questions lateral stability intermeshingtwin-rotor type autogiro As lam building type whirlybird Model Builder plans referenced articleMB plan *9791 for$5 would like point outthat one-half rotors anhedral other onehalf dihedral author states rotors anhedral partly true Accord ing plans rotors rotate forward dihedral sections rotors part rotors thus produces majority lift Continued page 136 8 Model Aviation IbinrdO PROPELLERS PO yeste bo color Go GRISH No 1 propeller True helical pitch airfoil win-power Sizes pitches styles needs AT YOUR DEALER 2 Blade Tractor 53each 545~364SOc 6364Mc 747678Mc 848688iCc 949697 98104106Mc 114116118 *1 1241251261hO 2 Blade Pusher 5 3 54 6364Mc 86Sc 96106*1 3 Blade Tractor 53 6364 ICc 3 Blade Pusher 63SOc Metallic Aluminum Color Tractor lh781 8h88*13 96 10604*150 Piither106*150 GRISH LARGE WOOD PROPELLERS HARDWOOD too hardr minimizes costly plane engine damage True pitch airfoil fully finished balanced ready coating 18$7 208 2210 2413 IN B & 10 PITCH 26 $16 v33][b263124003810820]] RIC SYSTEMS MINI R/C & SPORT ENGINES L.................JPROVIDE HIGH RPMS FOR TOP IU/CONTROL ENGINES PERFORMANCE THROTTLED R/C ENGINES COMBINE DEPENDABLE IDLE WITH 00 03 u/c061 DIV TRANSITION TO CONSISTENT HIGH SPEEDS ALL START EASILY I.03 R/C JET HAWK F4 PHANTOM F1 EAQLE HUNDERBIRD R VENGERTAIL II TLAS ROOTLEGGEAT0 ZLI -50L LAS R 0N AGLA~Ki OE3RA P4 LYW~OSE UVK HAWK F D R3IRD ATLAS BOOTL GO PJACOR ZLN ZJL LASER 20 YPTAP 3FLYINGTIC R VANE Local Dealer Send $100 Catalog v v ZONA SAWS The one wood handle good blade Razor #200 $210 Saw Set #100 $369 Sabre * 400- $185 Replacement blades available dealer F Al Model SupplyPO Box 3957 [RTorrance CA 00610 USA won Pennyplane Novice Pennyplane Stan Stoy set remarkable record HLG might wonder done well Fl D Nonaka has nown 40 minutes Cardington Bamba exceeded 39 twiceonce Cardington again September Santa Ana Nagoya Japanese maintained role hosts times stopped activities aid us Bamba often cat walk retrieving hung models Several fliers observed timing combined unusu ally cool conditions heavy ground turbulence made difficult master right power Time ran out too quickly Japanese very enthusiastic will strong world-class con tenders very soon already own Cat Indoor World Record following day given tour 400year-old Nagoya castle CBC facilities lunch atop ofthe modem skyscrapers received calculators cloisonne trays gracious CBC hosts afternoon off Tokyo Shinkansen next morning headed small hall city demonstrate Fl D Indoor modeling three major TV networks Imagine being evening news everywhere Japan Later day Harlan left visit automated factories 10 days others banquets sight seeing Though memory now us ever will forget Japanese taught up lessons art being host ever grateful Mr Nonaka making dream come true hope Japanese competitors able glean essence success Letters Editor Continued page 8 means Autogiro has exCeptlonal lateral stability Philippe Ciholas Danville KY 40422 Author Headley responds Since article publishe4 have received letter George Chaulet has developed type model extensively France comments lateral stability turns no problem biggestproblem tha4 occasionally blades rnn other Much chopped balsa Mr Ciholas explanation seems verified above Another letter about same article follows Lets Talk About RC Autogiro Jack Headley interesting informative article 1 36 Model Aviation 3 3/8 BORE ALL SIZES IN B B 10 12 PITCH RIGHT HAND TRACTOR 0 RISK ST JOHN INDIANA 46373 I95 I14000-18000RPM IIn Calif add Soles Tax Shipping $300 no COD2s IVIS.4Brochure 6 US $170 Foreign Add 41/2% Visa Ior Master Card Std Dealer Distributor Discounts L212026 Saticoy Street North Hollywood Calif 91605 EASYBUILT AN0~ MODE LCRAFT 5 SET5 oF 2c PLANS 4sSO PEP SET G2MDSO FOR L lT MUSKOKA HOBBY SUPPLY Box 1444 Bracebridge Ontario P08 iCO Dihedral /K Tip Moves ForwardAnhedral hopefully will stimulate interest type modeL interesting challenge anyone interested single-rotor Autogiro offer following additional comments Obtaining lateral stability seems problem using flapping blades unbalanced rotor lift eliminated stability problem persists inertia aerodynamic damp ening about roll axis much smaller conventional plane twin-rotor Autogiro cause lateral instability layout may criticaL Small wings scale rate gyro may necessary advantage Autogiro over Heli copter Autogiro rotor head much simpler three blades blade must hinged free flap Drag hinges required collective pitch control required cyclic pitch control obtained simply tilting rotor shaft blades rotate about pitch axis no swashplate used Machined rotor heads impressive usable rotor head can constructed hard wood brass tubing music wire ordi nary modeling tools techniques two-blade rotor could simple see-saw arrangement However indication two-blade rotors slow start autorotation may start alL under some flight conditions rotor model Autogiro has tendency stop turning two-channel single-rotor Autogiro should practicaL Autogiro definitely can landed dead-stick no problem Rudder ineffec tive needed Elevators effective eliminate need pitch axis tilt rotor head Rotor tilt aileron can used roll axis control rotor tilt used locate roll tilt axis high mast close rotor practicaL Use good strong servo tilt head about plus/minus 10 degrees Silliam J Kuhnle Richardson TX Avenger Fan noticed item about scratch-built AvengerLetters November1981 MA Ithought 4 4 BFJCANC/1 DECAThLL7ON top quality kit Pilot has wingspan 96 1/3 inches 1519 sq inch area 60 long flies very well 22 Quadra engine Kit features numbered die-cut hand-machined parts pre-cut windows 3-dimensional detailed instrument panel full-side plans photo building guide pre-formed cowl wheel pants plus much moreList Price 0495 E & R Price. $22995 NEW Bellanca Decathlon 40 truly stunning R/C wood snap-lock kit 40 60 size glow engine features larger 1/4 scale model above has wingspan 67 1/4 inches 774 sq inch wing area can used 4-channel radioList Price 3995 E & R Price. $11495 SPECIAL PRICE QB 405 shoulder wing kit Pilot sport model powered 40 engine 4-channel radio wing span QB 40S 59 inchesList Price 6995 E 8 R Price. $ 5299 have other kits stock ranging 52-inch win gspans through 9-feet listed catalog below ENGINES KAWASAKI 315 delivers full 4-h/p less muffler Special $21599 QUADRA R revised Quadra package complete HD motor mount muffler throttle control air-cleaner choke assembly $16995 RADIOS FUTABA hannel FP-6FN complete charger including E & R special heavy-duty 1/4 scale package package contains 1 1800 MAH heavy duty battery pack 4- 1 54 oz extra heavy-duty servos also included 1 -27 oz servo use throttle control include 4 large 1 54 oz servos lets install side wing ailerons Extra 154 oz servos stock want use flaps $4299 eaList Price 6990 Price. $36599 List Price 995 Price. $18699 List. $39995 Price. 95 p~5 R R 1 10 Edgeey ND 56433 t~HobbIeS 701/493-2015 EEtR FUTABA. FN complete 4 S26 servos E&R FUTABA G/K dual rate complete 4 S26 servos E&R E & R Hobbies stocks other items Send $100 catalog Add $600 airplane kit radio engine $300 up 10 pounds accessories UPS handling 4 USEA No 14111 inch No 14222 inch $210$325 Add 20% Poitagel best results use RUFF STUFF 'Self Adhesive Sheet Sandpaper' No glue No drying time Ideal special sanding shapes Adheres materials g5 1 sheets choice Medium Fine Super Fine 66 ea /AXLtJ APPLIED DESIGN CORP Penn Street egundo CA 90245 MarCh 1982 137 MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnlsh paint finishes overall size 19Y2x9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 FEATURES INCLUDE Space battery & meter panel Transmitter compartment e Room gallon fuel super Savings FIberglass MaterIals FiberglassCloth5Sqyards$1500 choice 6 oz cloth Laminating Epoxy Resin 6 hr cure530Odper gal Liquid Mold ReleaseS300 6 ozs Epoxy Primer IK&BI540Oopergal Epoxy PaintThinner K&BSI 5O0per gal Polyester Resin IK&BlS20O0per gal Send check money order shipping collect COD okay Call write aob Smith RIC Aircraft PO Box 33335 Granada Hills CA 91344 213 366-6872 SCALE DOCUMENTATION SCALE DRAWINGTOS 800K ETS \5 EPLA TECH 1931 RNATONA CATALOGS $200 4BSOO MC KENZ E HWY VOA OREGON 974BB 1-IENDERTOON II -- C -5- $4Y f1E 5 &cn C J C- 1OIL 1 CAi r ujaxxsus wuuzu uv uuz su mat someone else shares similar nostalgia K&B 61-powered model isnt elaborate has lots fun pleasure lookers surprised discover well flies originally tail-dragger wing spoilers linked rudder rebuilt following radio failureat time trike gear standard controls installed confident Harold Benjamin have fine airplane Leland W Sloan LaVeme CA upper picture shows Avenger soon after completion its tail-dragger form After rebuilding looks bit djfferent trike gear seem notice engine installation changed inverted upright welL OrganIzation ElectrIc Power Fliers Electric power model aircraft has proven efficient practical mind group electric power enthusiasts have decided form Society Electric Aircraft Modelers SEAM national organization dedicated advancement forms electric-powered model aircraft SEAM affiliated AMA intended serve advisory capacity AMA matters relating electric-powered model aircraft ultimate goal SEAM provide following services its members Information exchange Quarterly newsletter Reprints technical experimental data sheets Direct member-to-member information exchange Product information brochures Contest rules forum types classes FF RC electric-powered model aircraft Promotion regional electric-powered aircraft activities kinds through local SEAM clubs Business directory dealers stock elec tric motors batteries chargers suitable air craft kits Any readers interested form electric-powered model aircraft may have interest organization sort please send name address telephone num ber plus stamped pre-addressed * 10 business size envelope address below SEAM Frank Heacox 11632 Flamingo Dr Garden Grove CA 92644 Special interest groups areas air plane modeling have very helpful co ordinating activities seeing well being thei interests Perhaps SEAM will soon take its place alongside others 138 Model Aviation inLooking Hard Find Soaring Goodies 17Ae &zLfane llaclory o has complete comprehensive line RIO Soaring products everexist North America o Our line products includes some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/O soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Factory717 244 4508 PO Box 341 Red Lion PA 17356 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin
Edition: Model Aviation - 1982/03
Page Numbers: 8, 136, 137, 138
Pho s o shows no necessa p ot completed kits P47 Military Scale $180 INCLUDES Top Flight P-47 kit Rhom retracts Aerosport 6 channel radio 5 servos Fox Eagle 60 engine J-3 CUB Quarter Scale $227 INCLUDESDud Nosen 1/4 scale J-3 Cub kit Kraft 4 channel radio rvos Quadra engine mount & props $212 Super Hustler engine SUPER KAOS Fast & Fun $185 INCLUDES Bridi Super Kaos kit Proline 5 channel radio 4 servos OX Max 60 engine $205 Rhom retracts items shown plus HUNDREDS others individually offered sale recent issues Hobby Swap News model en thusiasts 'Used Equipment Guide BuySell-Trade first ad free 50 words max subscription $10/yr 10 issues $19/2yr $2713 yr Add $3/yr 1st class mail Canada & Mexico musf use 1st class rates other countries write firsf MC & Visa Accepted include numbers expiration date Expect 4 8 weeks delivery 1st issue address changes Submit free ad B&W photo $2 extra subscription orders Hobby Swap News Dept AR-3 PO Box 834 Santa Maria CA 93456 LOWERING THE COST OF HAVING FUN etters t$e ca7tcr letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Gas Power Electric Spitfire am very impressed Electric Spitfire October 1981 ModelAviation However have couple questions am currently flying General Skyfarer 6-ft span fixed rudders twin tail controls aileron elevator throttle nose wheel coupled aileron servo All-up weight 6 lb 700 sq area amusing Enya 29 swinging 1-4 prop 2-in spinner gets off very well pavement will loop rolls still consider underpowered should like very much build Spitfire have ST 23 has very little time seems well 9-6 10-4 questiolt What prop diameter pitch 23 version 3k-in spinner doesnt leave much blade sticking out realize Spitfire has extra 190 sq iii over Skyfarer 5 lb wing loading figures about 8 oz Skyfarer close 15 Based charts Jack Bums 1976 Model Aviation Spitfire falls lightglider area andthe Skyfarer inthe heavy glider area article Spit mentions swinging 1213-14 diameter 8 pitch prop electric Please advise 23 engine should go OS 35 Don Boardman Swanton VT Designer/author Don Si-till responds flew Spitfire both ST23 OS30 good success Ipreferred OS because little pep lower reliable idle used 10-34propon the23 used 10-4s l1-4s 30 worked well 3-in spinner would recommend 35 want little aerobatic peiformance 23 however will fly Spit welleven bit sedately Wants Electric Power Specs think AMA President John Griggs pitch merits electric-powered model aircraft recently extremely sound farsighted Considering publics dislike noisy glow engines especially members fly planes close residential areas sup port electric-powered model flying wise. very wise indeed However manufacturers electric propulsion motors model alrcraft use continue fall provide serious modeler products optimum designed ratingsparticularly motors voltage wattage rating efforts expand interest electric flying win enthusiasts forsilent flying may well prove less productive might wish short serious model builder hesitate invest hard-earned dollars electric flight system presently have Astro Flight 05 RC flying because current manufacturers systems provide sufficient technical information motors As much might wish capture entire battery-supply-and-sales portion area entirely themselves individually short-nm advantage might kill overall growth use type power systems future Dr Cy Stow Conyers GA Since Doug Prat4 MA assistant editor has good bit experience electricpowered models called him thoughts matters Dr Stow raise Heres what Doug says Dr Stow has very good point folks manufacture glow ignition make available kinds technical data products growing interest electric propulsion its high time some hard engineering data Bob Bouchers book Silent Revolution fine manualfor beginner new hot-wind motors high-voltage battery packs coming mar kei need specifics General Electric publishes applications handbook Ni-Cd batteries extremely usefiik can purchased Ace RCsee January Product Review section page 50 us would like see manufacturers engineering data print Electric propulsion works everyone admits now need know hows whys Common Meeting Ground very pleased see construction article plans Pieces page 64 January ModelAviation release coincided start 1981-82 Indoor model program Kansas City well received Pieces obviously good design its records construction article Walt Van Gorder well done have found Indoor models can provide common meeting ground Radio Control Free Flight Control Line interests Thank helping promote Indoor models Roger J Schroeder Overland Park KS Weve got admit looking calendar scheduled Pieces Indoor Easy B construction article Peanut Scale another activitiy much overlap interest recommend taking look Fury Peanut Scale issue Intermeshing Twin-Rotor Autoglro article Lets Talk About RC Auto giro Jack Headiey November 1981 MA author questions lateral stability intermeshingtwin-rotor type autogiro As lam building type whirlybird Model Builder plans referenced articleMB plan *9791 for$5 would like point outthat one-half rotors anhedral other onehalf dihedral author states rotors anhedral partly true Accord ing plans rotors rotate forward dihedral sections rotors part rotors thus produces majority lift Continued page 136 8 Model Aviation IbinrdO PROPELLERS PO yeste bo color Go GRISH No 1 propeller True helical pitch airfoil win-power Sizes pitches styles needs AT YOUR DEALER 2 Blade Tractor 53each 545~364SOc 6364Mc 747678Mc 848688iCc 949697 98104106Mc 114116118 *1 1241251261hO 2 Blade Pusher 5 3 54 6364Mc 86Sc 96106*1 3 Blade Tractor 53 6364 ICc 3 Blade Pusher 63SOc Metallic Aluminum Color Tractor lh781 8h88*13 96 10604*150 Piither106*150 GRISH LARGE WOOD PROPELLERS HARDWOOD too hardr minimizes costly plane engine damage True pitch airfoil fully finished balanced ready coating 18$7 208 2210 2413 IN B & 10 PITCH 26 $16 v33][b263124003810820]] RIC SYSTEMS MINI R/C & SPORT ENGINES L.................JPROVIDE HIGH RPMS FOR TOP IU/CONTROL ENGINES PERFORMANCE THROTTLED R/C ENGINES COMBINE DEPENDABLE IDLE WITH 00 03 u/c061 DIV TRANSITION TO CONSISTENT HIGH SPEEDS ALL START EASILY I.03 R/C JET HAWK F4 PHANTOM F1 EAQLE HUNDERBIRD R VENGERTAIL II TLAS ROOTLEGGEAT0 ZLI -50L LAS R 0N AGLA~Ki OE3RA P4 LYW~OSE UVK HAWK F D R3IRD ATLAS BOOTL GO PJACOR ZLN ZJL LASER 20 YPTAP 3FLYINGTIC R VANE Local Dealer Send $100 Catalog v v ZONA SAWS The one wood handle good blade Razor #200 $210 Saw Set #100 $369 Sabre * 400- $185 Replacement blades available dealer F Al Model SupplyPO Box 3957 [RTorrance CA 00610 USA won Pennyplane Novice Pennyplane Stan Stoy set remarkable record HLG might wonder done well Fl D Nonaka has nown 40 minutes Cardington Bamba exceeded 39 twiceonce Cardington again September Santa Ana Nagoya Japanese maintained role hosts times stopped activities aid us Bamba often cat walk retrieving hung models Several fliers observed timing combined unusu ally cool conditions heavy ground turbulence made difficult master right power Time ran out too quickly Japanese very enthusiastic will strong world-class con tenders very soon already own Cat Indoor World Record following day given tour 400year-old Nagoya castle CBC facilities lunch atop ofthe modem skyscrapers received calculators cloisonne trays gracious CBC hosts afternoon off Tokyo Shinkansen next morning headed small hall city demonstrate Fl D Indoor modeling three major TV networks Imagine being evening news everywhere Japan Later day Harlan left visit automated factories 10 days others banquets sight seeing Though memory now us ever will forget Japanese taught up lessons art being host ever grateful Mr Nonaka making dream come true hope Japanese competitors able glean essence success Letters Editor Continued page 8 means Autogiro has exCeptlonal lateral stability Philippe Ciholas Danville KY 40422 Author Headley responds Since article publishe4 have received letter George Chaulet has developed type model extensively France comments lateral stability turns no problem biggestproblem tha4 occasionally blades rnn other Much chopped balsa Mr Ciholas explanation seems verified above Another letter about same article follows Lets Talk About RC Autogiro Jack Headley interesting informative article 1 36 Model Aviation 3 3/8 BORE ALL SIZES IN B B 10 12 PITCH RIGHT HAND TRACTOR 0 RISK ST JOHN INDIANA 46373 I95 I14000-18000RPM IIn Calif add Soles Tax Shipping $300 no COD2s IVIS.4Brochure 6 US $170 Foreign Add 41/2% Visa Ior Master Card Std Dealer Distributor Discounts L212026 Saticoy Street North Hollywood Calif 91605 EASYBUILT AN0~ MODE LCRAFT 5 SET5 oF 2c PLANS 4sSO PEP SET G2MDSO FOR L lT MUSKOKA HOBBY SUPPLY Box 1444 Bracebridge Ontario P08 iCO Dihedral /K Tip Moves ForwardAnhedral hopefully will stimulate interest type modeL interesting challenge anyone interested single-rotor Autogiro offer following additional comments Obtaining lateral stability seems problem using flapping blades unbalanced rotor lift eliminated stability problem persists inertia aerodynamic damp ening about roll axis much smaller conventional plane twin-rotor Autogiro cause lateral instability layout may criticaL Small wings scale rate gyro may necessary advantage Autogiro over Heli copter Autogiro rotor head much simpler three blades blade must hinged free flap Drag hinges required collective pitch control required cyclic pitch control obtained simply tilting rotor shaft blades rotate about pitch axis no swashplate used Machined rotor heads impressive usable rotor head can constructed hard wood brass tubing music wire ordi nary modeling tools techniques two-blade rotor could simple see-saw arrangement However indication two-blade rotors slow start autorotation may start alL under some flight conditions rotor model Autogiro has tendency stop turning two-channel single-rotor Autogiro should practicaL Autogiro definitely can landed dead-stick no problem Rudder ineffec tive needed Elevators effective eliminate need pitch axis tilt rotor head Rotor tilt aileron can used roll axis control rotor tilt used locate roll tilt axis high mast close rotor practicaL Use good strong servo tilt head about plus/minus 10 degrees Silliam J Kuhnle Richardson TX Avenger Fan noticed item about scratch-built AvengerLetters November1981 MA Ithought 4 4 BFJCANC/1 DECAThLL7ON top quality kit Pilot has wingspan 96 1/3 inches 1519 sq inch area 60 long flies very well 22 Quadra engine Kit features numbered die-cut hand-machined parts pre-cut windows 3-dimensional detailed instrument panel full-side plans photo building guide pre-formed cowl wheel pants plus much moreList Price 0495 E & R Price. $22995 NEW Bellanca Decathlon 40 truly stunning R/C wood snap-lock kit 40 60 size glow engine features larger 1/4 scale model above has wingspan 67 1/4 inches 774 sq inch wing area can used 4-channel radioList Price 3995 E & R Price. $11495 SPECIAL PRICE QB 405 shoulder wing kit Pilot sport model powered 40 engine 4-channel radio wing span QB 40S 59 inchesList Price 6995 E 8 R Price. $ 5299 have other kits stock ranging 52-inch win gspans through 9-feet listed catalog below ENGINES KAWASAKI 315 delivers full 4-h/p less muffler Special $21599 QUADRA R revised Quadra package complete HD motor mount muffler throttle control air-cleaner choke assembly $16995 RADIOS FUTABA hannel FP-6FN complete charger including E & R special heavy-duty 1/4 scale package package contains 1 1800 MAH heavy duty battery pack 4- 1 54 oz extra heavy-duty servos also included 1 -27 oz servo use throttle control include 4 large 1 54 oz servos lets install side wing ailerons Extra 154 oz servos stock want use flaps $4299 eaList Price 6990 Price. $36599 List Price 995 Price. $18699 List. $39995 Price. 95 p~5 R R 1 10 Edgeey ND 56433 t~HobbIeS 701/493-2015 EEtR FUTABA. FN complete 4 S26 servos E&R FUTABA G/K dual rate complete 4 S26 servos E&R E & R Hobbies stocks other items Send $100 catalog Add $600 airplane kit radio engine $300 up 10 pounds accessories UPS handling 4 USEA No 14111 inch No 14222 inch $210$325 Add 20% Poitagel best results use RUFF STUFF 'Self Adhesive Sheet Sandpaper' No glue No drying time Ideal special sanding shapes Adheres materials g5 1 sheets choice Medium Fine Super Fine 66 ea /AXLtJ APPLIED DESIGN CORP Penn Street egundo CA 90245 MarCh 1982 137 MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnlsh paint finishes overall size 19Y2x9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 FEATURES INCLUDE Space battery & meter panel Transmitter compartment e Room gallon fuel super Savings FIberglass MaterIals FiberglassCloth5Sqyards$1500 choice 6 oz cloth Laminating Epoxy Resin 6 hr cure530Odper gal Liquid Mold ReleaseS300 6 ozs Epoxy Primer IK&BI540Oopergal Epoxy PaintThinner K&BSI 5O0per gal Polyester Resin IK&BlS20O0per gal Send check money order shipping collect COD okay Call write aob Smith RIC Aircraft PO Box 33335 Granada Hills CA 91344 213 366-6872 SCALE DOCUMENTATION SCALE DRAWINGTOS 800K ETS \5 EPLA TECH 1931 RNATONA CATALOGS $200 4BSOO MC KENZ E HWY VOA OREGON 974BB 1-IENDERTOON II -- C -5- $4Y f1E 5 &cn C J C- 1OIL 1 CAi r ujaxxsus wuuzu uv uuz su mat someone else shares similar nostalgia K&B 61-powered model isnt elaborate has lots fun pleasure lookers surprised discover well flies originally tail-dragger wing spoilers linked rudder rebuilt following radio failureat time trike gear standard controls installed confident Harold Benjamin have fine airplane Leland W Sloan LaVeme CA upper picture shows Avenger soon after completion its tail-dragger form After rebuilding looks bit djfferent trike gear seem notice engine installation changed inverted upright welL OrganIzation ElectrIc Power Fliers Electric power model aircraft has proven efficient practical mind group electric power enthusiasts have decided form Society Electric Aircraft Modelers SEAM national organization dedicated advancement forms electric-powered model aircraft SEAM affiliated AMA intended serve advisory capacity AMA matters relating electric-powered model aircraft ultimate goal SEAM provide following services its members Information exchange Quarterly newsletter Reprints technical experimental data sheets Direct member-to-member information exchange Product information brochures Contest rules forum types classes FF RC electric-powered model aircraft Promotion regional electric-powered aircraft activities kinds through local SEAM clubs Business directory dealers stock elec tric motors batteries chargers suitable air craft kits Any readers interested form electric-powered model aircraft may have interest organization sort please send name address telephone num ber plus stamped pre-addressed * 10 business size envelope address below SEAM Frank Heacox 11632 Flamingo Dr Garden Grove CA 92644 Special interest groups areas air plane modeling have very helpful co ordinating activities seeing well being thei interests Perhaps SEAM will soon take its place alongside others 138 Model Aviation inLooking Hard Find Soaring Goodies 17Ae &zLfane llaclory o has complete comprehensive line RIO Soaring products everexist North America o Our line products includes some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/O soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Factory717 244 4508 PO Box 341 Red Lion PA 17356 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin
Edition: Model Aviation - 1982/03
Page Numbers: 8, 136, 137, 138
Pho s o shows no necessa p ot completed kits P47 Military Scale $180 INCLUDES Top Flight P-47 kit Rhom retracts Aerosport 6 channel radio 5 servos Fox Eagle 60 engine J-3 CUB Quarter Scale $227 INCLUDESDud Nosen 1/4 scale J-3 Cub kit Kraft 4 channel radio rvos Quadra engine mount & props $212 Super Hustler engine SUPER KAOS Fast & Fun $185 INCLUDES Bridi Super Kaos kit Proline 5 channel radio 4 servos OX Max 60 engine $205 Rhom retracts items shown plus HUNDREDS others individually offered sale recent issues Hobby Swap News model en thusiasts 'Used Equipment Guide BuySell-Trade first ad free 50 words max subscription $10/yr 10 issues $19/2yr $2713 yr Add $3/yr 1st class mail Canada & Mexico musf use 1st class rates other countries write firsf MC & Visa Accepted include numbers expiration date Expect 4 8 weeks delivery 1st issue address changes Submit free ad B&W photo $2 extra subscription orders Hobby Swap News Dept AR-3 PO Box 834 Santa Maria CA 93456 LOWERING THE COST OF HAVING FUN etters t$e ca7tcr letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Gas Power Electric Spitfire am very impressed Electric Spitfire October 1981 ModelAviation However have couple questions am currently flying General Skyfarer 6-ft span fixed rudders twin tail controls aileron elevator throttle nose wheel coupled aileron servo All-up weight 6 lb 700 sq area amusing Enya 29 swinging 1-4 prop 2-in spinner gets off very well pavement will loop rolls still consider underpowered should like very much build Spitfire have ST 23 has very little time seems well 9-6 10-4 questiolt What prop diameter pitch 23 version 3k-in spinner doesnt leave much blade sticking out realize Spitfire has extra 190 sq iii over Skyfarer 5 lb wing loading figures about 8 oz Skyfarer close 15 Based charts Jack Bums 1976 Model Aviation Spitfire falls lightglider area andthe Skyfarer inthe heavy glider area article Spit mentions swinging 1213-14 diameter 8 pitch prop electric Please advise 23 engine should go OS 35 Don Boardman Swanton VT Designer/author Don Si-till responds flew Spitfire both ST23 OS30 good success Ipreferred OS because little pep lower reliable idle used 10-34propon the23 used 10-4s l1-4s 30 worked well 3-in spinner would recommend 35 want little aerobatic peiformance 23 however will fly Spit welleven bit sedately Wants Electric Power Specs think AMA President John Griggs pitch merits electric-powered model aircraft recently extremely sound farsighted Considering publics dislike noisy glow engines especially members fly planes close residential areas sup port electric-powered model flying wise. very wise indeed However manufacturers electric propulsion motors model alrcraft use continue fall provide serious modeler products optimum designed ratingsparticularly motors voltage wattage rating efforts expand interest electric flying win enthusiasts forsilent flying may well prove less productive might wish short serious model builder hesitate invest hard-earned dollars electric flight system presently have Astro Flight 05 RC flying because current manufacturers systems provide sufficient technical information motors As much might wish capture entire battery-supply-and-sales portion area entirely themselves individually short-nm advantage might kill overall growth use type power systems future Dr Cy Stow Conyers GA Since Doug Prat4 MA assistant editor has good bit experience electricpowered models called him thoughts matters Dr Stow raise Heres what Doug says Dr Stow has very good point folks manufacture glow ignition make available kinds technical data products growing interest electric propulsion its high time some hard engineering data Bob Bouchers book Silent Revolution fine manualfor beginner new hot-wind motors high-voltage battery packs coming mar kei need specifics General Electric publishes applications handbook Ni-Cd batteries extremely usefiik can purchased Ace RCsee January Product Review section page 50 us would like see manufacturers engineering data print Electric propulsion works everyone admits now need know hows whys Common Meeting Ground very pleased see construction article plans Pieces page 64 January ModelAviation release coincided start 1981-82 Indoor model program Kansas City well received Pieces obviously good design its records construction article Walt Van Gorder well done have found Indoor models can provide common meeting ground Radio Control Free Flight Control Line interests Thank helping promote Indoor models Roger J Schroeder Overland Park KS Weve got admit looking calendar scheduled Pieces Indoor Easy B construction article Peanut Scale another activitiy much overlap interest recommend taking look Fury Peanut Scale issue Intermeshing Twin-Rotor Autoglro article Lets Talk About RC Auto giro Jack Headiey November 1981 MA author questions lateral stability intermeshingtwin-rotor type autogiro As lam building type whirlybird Model Builder plans referenced articleMB plan *9791 for$5 would like point outthat one-half rotors anhedral other onehalf dihedral author states rotors anhedral partly true Accord ing plans rotors rotate forward dihedral sections rotors part rotors thus produces majority lift Continued page 136 8 Model Aviation IbinrdO PROPELLERS PO yeste bo color Go GRISH No 1 propeller True helical pitch airfoil win-power Sizes pitches styles needs AT YOUR DEALER 2 Blade Tractor 53each 545~364SOc 6364Mc 747678Mc 848688iCc 949697 98104106Mc 114116118 *1 1241251261hO 2 Blade Pusher 5 3 54 6364Mc 86Sc 96106*1 3 Blade Tractor 53 6364 ICc 3 Blade Pusher 63SOc Metallic Aluminum Color Tractor lh781 8h88*13 96 10604*150 Piither106*150 GRISH LARGE WOOD PROPELLERS HARDWOOD too hardr minimizes costly plane engine damage True pitch airfoil fully finished balanced ready coating 18$7 208 2210 2413 IN B & 10 PITCH 26 $16 v33][b263124003810820]] RIC SYSTEMS MINI R/C & SPORT ENGINES L.................JPROVIDE HIGH RPMS FOR TOP IU/CONTROL ENGINES PERFORMANCE THROTTLED R/C ENGINES COMBINE DEPENDABLE IDLE WITH 00 03 u/c061 DIV TRANSITION TO CONSISTENT HIGH SPEEDS ALL START EASILY I.03 R/C JET HAWK F4 PHANTOM F1 EAQLE HUNDERBIRD R VENGERTAIL II TLAS ROOTLEGGEAT0 ZLI -50L LAS R 0N AGLA~Ki OE3RA P4 LYW~OSE UVK HAWK F D R3IRD ATLAS BOOTL GO PJACOR ZLN ZJL LASER 20 YPTAP 3FLYINGTIC R VANE Local Dealer Send $100 Catalog v v ZONA SAWS The one wood handle good blade Razor #200 $210 Saw Set #100 $369 Sabre * 400- $185 Replacement blades available dealer F Al Model SupplyPO Box 3957 [RTorrance CA 00610 USA won Pennyplane Novice Pennyplane Stan Stoy set remarkable record HLG might wonder done well Fl D Nonaka has nown 40 minutes Cardington Bamba exceeded 39 twiceonce Cardington again September Santa Ana Nagoya Japanese maintained role hosts times stopped activities aid us Bamba often cat walk retrieving hung models Several fliers observed timing combined unusu ally cool conditions heavy ground turbulence made difficult master right power Time ran out too quickly Japanese very enthusiastic will strong world-class con tenders very soon already own Cat Indoor World Record following day given tour 400year-old Nagoya castle CBC facilities lunch atop ofthe modem skyscrapers received calculators cloisonne trays gracious CBC hosts afternoon off Tokyo Shinkansen next morning headed small hall city demonstrate Fl D Indoor modeling three major TV networks Imagine being evening news everywhere Japan Later day Harlan left visit automated factories 10 days others banquets sight seeing Though memory now us ever will forget Japanese taught up lessons art being host ever grateful Mr Nonaka making dream come true hope Japanese competitors able glean essence success Letters Editor Continued page 8 means Autogiro has exCeptlonal lateral stability Philippe Ciholas Danville KY 40422 Author Headley responds Since article publishe4 have received letter George Chaulet has developed type model extensively France comments lateral stability turns no problem biggestproblem tha4 occasionally blades rnn other Much chopped balsa Mr Ciholas explanation seems verified above Another letter about same article follows Lets Talk About RC Autogiro Jack Headley interesting informative article 1 36 Model Aviation 3 3/8 BORE ALL SIZES IN B B 10 12 PITCH RIGHT HAND TRACTOR 0 RISK ST JOHN INDIANA 46373 I95 I14000-18000RPM IIn Calif add Soles Tax Shipping $300 no COD2s IVIS.4Brochure 6 US $170 Foreign Add 41/2% Visa Ior Master Card Std Dealer Distributor Discounts L212026 Saticoy Street North Hollywood Calif 91605 EASYBUILT AN0~ MODE LCRAFT 5 SET5 oF 2c PLANS 4sSO PEP SET G2MDSO FOR L lT MUSKOKA HOBBY SUPPLY Box 1444 Bracebridge Ontario P08 iCO Dihedral /K Tip Moves ForwardAnhedral hopefully will stimulate interest type modeL interesting challenge anyone interested single-rotor Autogiro offer following additional comments Obtaining lateral stability seems problem using flapping blades unbalanced rotor lift eliminated stability problem persists inertia aerodynamic damp ening about roll axis much smaller conventional plane twin-rotor Autogiro cause lateral instability layout may criticaL Small wings scale rate gyro may necessary advantage Autogiro over Heli copter Autogiro rotor head much simpler three blades blade must hinged free flap Drag hinges required collective pitch control required cyclic pitch control obtained simply tilting rotor shaft blades rotate about pitch axis no swashplate used Machined rotor heads impressive usable rotor head can constructed hard wood brass tubing music wire ordi nary modeling tools techniques two-blade rotor could simple see-saw arrangement However indication two-blade rotors slow start autorotation may start alL under some flight conditions rotor model Autogiro has tendency stop turning two-channel single-rotor Autogiro should practicaL Autogiro definitely can landed dead-stick no problem Rudder ineffec tive needed Elevators effective eliminate need pitch axis tilt rotor head Rotor tilt aileron can used roll axis control rotor tilt used locate roll tilt axis high mast close rotor practicaL Use good strong servo tilt head about plus/minus 10 degrees Silliam J Kuhnle Richardson TX Avenger Fan noticed item about scratch-built AvengerLetters November1981 MA Ithought 4 4 BFJCANC/1 DECAThLL7ON top quality kit Pilot has wingspan 96 1/3 inches 1519 sq inch area 60 long flies very well 22 Quadra engine Kit features numbered die-cut hand-machined parts pre-cut windows 3-dimensional detailed instrument panel full-side plans photo building guide pre-formed cowl wheel pants plus much moreList Price 0495 E & R Price. $22995 NEW Bellanca Decathlon 40 truly stunning R/C wood snap-lock kit 40 60 size glow engine features larger 1/4 scale model above has wingspan 67 1/4 inches 774 sq inch wing area can used 4-channel radioList Price 3995 E & R Price. $11495 SPECIAL PRICE QB 405 shoulder wing kit Pilot sport model powered 40 engine 4-channel radio wing span QB 40S 59 inchesList Price 6995 E 8 R Price. $ 5299 have other kits stock ranging 52-inch win gspans through 9-feet listed catalog below ENGINES KAWASAKI 315 delivers full 4-h/p less muffler Special $21599 QUADRA R revised Quadra package complete HD motor mount muffler throttle control air-cleaner choke assembly $16995 RADIOS FUTABA hannel FP-6FN complete charger including E & R special heavy-duty 1/4 scale package package contains 1 1800 MAH heavy duty battery pack 4- 1 54 oz extra heavy-duty servos also included 1 -27 oz servo use throttle control include 4 large 1 54 oz servos lets install side wing ailerons Extra 154 oz servos stock want use flaps $4299 eaList Price 6990 Price. $36599 List Price 995 Price. $18699 List. $39995 Price. 95 p~5 R R 1 10 Edgeey ND 56433 t~HobbIeS 701/493-2015 EEtR FUTABA. FN complete 4 S26 servos E&R FUTABA G/K dual rate complete 4 S26 servos E&R E & R Hobbies stocks other items Send $100 catalog Add $600 airplane kit radio engine $300 up 10 pounds accessories UPS handling 4 USEA No 14111 inch No 14222 inch $210$325 Add 20% Poitagel best results use RUFF STUFF 'Self Adhesive Sheet Sandpaper' No glue No drying time Ideal special sanding shapes Adheres materials g5 1 sheets choice Medium Fine Super Fine 66 ea /AXLtJ APPLIED DESIGN CORP Penn Street egundo CA 90245 MarCh 1982 137 MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnlsh paint finishes overall size 19Y2x9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 FEATURES INCLUDE Space battery & meter panel Transmitter compartment e Room gallon fuel super Savings FIberglass MaterIals FiberglassCloth5Sqyards$1500 choice 6 oz cloth Laminating Epoxy Resin 6 hr cure530Odper gal Liquid Mold ReleaseS300 6 ozs Epoxy Primer IK&BI540Oopergal Epoxy PaintThinner K&BSI 5O0per gal Polyester Resin IK&BlS20O0per gal Send check money order shipping collect COD okay Call write aob Smith RIC Aircraft PO Box 33335 Granada Hills CA 91344 213 366-6872 SCALE DOCUMENTATION SCALE DRAWINGTOS 800K ETS \5 EPLA TECH 1931 RNATONA CATALOGS $200 4BSOO MC KENZ E HWY VOA OREGON 974BB 1-IENDERTOON II -- C -5- $4Y f1E 5 &cn C J C- 1OIL 1 CAi r ujaxxsus wuuzu uv uuz su mat someone else shares similar nostalgia K&B 61-powered model isnt elaborate has lots fun pleasure lookers surprised discover well flies originally tail-dragger wing spoilers linked rudder rebuilt following radio failureat time trike gear standard controls installed confident Harold Benjamin have fine airplane Leland W Sloan LaVeme CA upper picture shows Avenger soon after completion its tail-dragger form After rebuilding looks bit djfferent trike gear seem notice engine installation changed inverted upright welL OrganIzation ElectrIc Power Fliers Electric power model aircraft has proven efficient practical mind group electric power enthusiasts have decided form Society Electric Aircraft Modelers SEAM national organization dedicated advancement forms electric-powered model aircraft SEAM affiliated AMA intended serve advisory capacity AMA matters relating electric-powered model aircraft ultimate goal SEAM provide following services its members Information exchange Quarterly newsletter Reprints technical experimental data sheets Direct member-to-member information exchange Product information brochures Contest rules forum types classes FF RC electric-powered model aircraft Promotion regional electric-powered aircraft activities kinds through local SEAM clubs Business directory dealers stock elec tric motors batteries chargers suitable air craft kits Any readers interested form electric-powered model aircraft may have interest organization sort please send name address telephone num ber plus stamped pre-addressed * 10 business size envelope address below SEAM Frank Heacox 11632 Flamingo Dr Garden Grove CA 92644 Special interest groups areas air plane modeling have very helpful co ordinating activities seeing well being thei interests Perhaps SEAM will soon take its place alongside others 138 Model Aviation inLooking Hard Find Soaring Goodies 17Ae &zLfane llaclory o has complete comprehensive line RIO Soaring products everexist North America o Our line products includes some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/O soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Factory717 244 4508 PO Box 341 Red Lion PA 17356 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin
Edition: Model Aviation - 1982/03
Page Numbers: 8, 136, 137, 138
Pho s o shows no necessa p ot completed kits P47 Military Scale $180 INCLUDES Top Flight P-47 kit Rhom retracts Aerosport 6 channel radio 5 servos Fox Eagle 60 engine J-3 CUB Quarter Scale $227 INCLUDESDud Nosen 1/4 scale J-3 Cub kit Kraft 4 channel radio rvos Quadra engine mount & props $212 Super Hustler engine SUPER KAOS Fast & Fun $185 INCLUDES Bridi Super Kaos kit Proline 5 channel radio 4 servos OX Max 60 engine $205 Rhom retracts items shown plus HUNDREDS others individually offered sale recent issues Hobby Swap News model en thusiasts 'Used Equipment Guide BuySell-Trade first ad free 50 words max subscription $10/yr 10 issues $19/2yr $2713 yr Add $3/yr 1st class mail Canada & Mexico musf use 1st class rates other countries write firsf MC & Visa Accepted include numbers expiration date Expect 4 8 weeks delivery 1st issue address changes Submit free ad B&W photo $2 extra subscription orders Hobby Swap News Dept AR-3 PO Box 834 Santa Maria CA 93456 LOWERING THE COST OF HAVING FUN etters t$e ca7tcr letters will carefully considered general interest used Send ModelAviation 815 15th St NW Washington DC 20005 Gas Power Electric Spitfire am very impressed Electric Spitfire October 1981 ModelAviation However have couple questions am currently flying General Skyfarer 6-ft span fixed rudders twin tail controls aileron elevator throttle nose wheel coupled aileron servo All-up weight 6 lb 700 sq area amusing Enya 29 swinging 1-4 prop 2-in spinner gets off very well pavement will loop rolls still consider underpowered should like very much build Spitfire have ST 23 has very little time seems well 9-6 10-4 questiolt What prop diameter pitch 23 version 3k-in spinner doesnt leave much blade sticking out realize Spitfire has extra 190 sq iii over Skyfarer 5 lb wing loading figures about 8 oz Skyfarer close 15 Based charts Jack Bums 1976 Model Aviation Spitfire falls lightglider area andthe Skyfarer inthe heavy glider area article Spit mentions swinging 1213-14 diameter 8 pitch prop electric Please advise 23 engine should go OS 35 Don Boardman Swanton VT Designer/author Don Si-till responds flew Spitfire both ST23 OS30 good success Ipreferred OS because little pep lower reliable idle used 10-34propon the23 used 10-4s l1-4s 30 worked well 3-in spinner would recommend 35 want little aerobatic peiformance 23 however will fly Spit welleven bit sedately Wants Electric Power Specs think AMA President John Griggs pitch merits electric-powered model aircraft recently extremely sound farsighted Considering publics dislike noisy glow engines especially members fly planes close residential areas sup port electric-powered model flying wise. very wise indeed However manufacturers electric propulsion motors model alrcraft use continue fall provide serious modeler products optimum designed ratingsparticularly motors voltage wattage rating efforts expand interest electric flying win enthusiasts forsilent flying may well prove less productive might wish short serious model builder hesitate invest hard-earned dollars electric flight system presently have Astro Flight 05 RC flying because current manufacturers systems provide sufficient technical information motors As much might wish capture entire battery-supply-and-sales portion area entirely themselves individually short-nm advantage might kill overall growth use type power systems future Dr Cy Stow Conyers GA Since Doug Prat4 MA assistant editor has good bit experience electricpowered models called him thoughts matters Dr Stow raise Heres what Doug says Dr Stow has very good point folks manufacture glow ignition make available kinds technical data products growing interest electric propulsion its high time some hard engineering data Bob Bouchers book Silent Revolution fine manualfor beginner new hot-wind motors high-voltage battery packs coming mar kei need specifics General Electric publishes applications handbook Ni-Cd batteries extremely usefiik can purchased Ace RCsee January Product Review section page 50 us would like see manufacturers engineering data print Electric propulsion works everyone admits now need know hows whys Common Meeting Ground very pleased see construction article plans Pieces page 64 January ModelAviation release coincided start 1981-82 Indoor model program Kansas City well received Pieces obviously good design its records construction article Walt Van Gorder well done have found Indoor models can provide common meeting ground Radio Control Free Flight Control Line interests Thank helping promote Indoor models Roger J Schroeder Overland Park KS Weve got admit looking calendar scheduled Pieces Indoor Easy B construction article Peanut Scale another activitiy much overlap interest recommend taking look Fury Peanut Scale issue Intermeshing Twin-Rotor Autoglro article Lets Talk About RC Auto giro Jack Headiey November 1981 MA author questions lateral stability intermeshingtwin-rotor type autogiro As lam building type whirlybird Model Builder plans referenced articleMB plan *9791 for$5 would like point outthat one-half rotors anhedral other onehalf dihedral author states rotors anhedral partly true Accord ing plans rotors rotate forward dihedral sections rotors part rotors thus produces majority lift Continued page 136 8 Model Aviation IbinrdO PROPELLERS PO yeste bo color Go GRISH No 1 propeller True helical pitch airfoil win-power Sizes pitches styles needs AT YOUR DEALER 2 Blade Tractor 53each 545~364SOc 6364Mc 747678Mc 848688iCc 949697 98104106Mc 114116118 *1 1241251261hO 2 Blade Pusher 5 3 54 6364Mc 86Sc 96106*1 3 Blade Tractor 53 6364 ICc 3 Blade Pusher 63SOc Metallic Aluminum Color Tractor lh781 8h88*13 96 10604*150 Piither106*150 GRISH LARGE WOOD PROPELLERS HARDWOOD too hardr minimizes costly plane engine damage True pitch airfoil fully finished balanced ready coating 18$7 208 2210 2413 IN B & 10 PITCH 26 $16 v33][b263124003810820]] RIC SYSTEMS MINI R/C & SPORT ENGINES L.................JPROVIDE HIGH RPMS FOR TOP IU/CONTROL ENGINES PERFORMANCE THROTTLED R/C ENGINES COMBINE DEPENDABLE IDLE WITH 00 03 u/c061 DIV TRANSITION TO CONSISTENT HIGH SPEEDS ALL START EASILY I.03 R/C JET HAWK F4 PHANTOM F1 EAQLE HUNDERBIRD R VENGERTAIL II TLAS ROOTLEGGEAT0 ZLI -50L LAS R 0N AGLA~Ki OE3RA P4 LYW~OSE UVK HAWK F D R3IRD ATLAS BOOTL GO PJACOR ZLN ZJL LASER 20 YPTAP 3FLYINGTIC R VANE Local Dealer Send $100 Catalog v v ZONA SAWS The one wood handle good blade Razor #200 $210 Saw Set #100 $369 Sabre * 400- $185 Replacement blades available dealer F Al Model SupplyPO Box 3957 [RTorrance CA 00610 USA won Pennyplane Novice Pennyplane Stan Stoy set remarkable record HLG might wonder done well Fl D Nonaka has nown 40 minutes Cardington Bamba exceeded 39 twiceonce Cardington again September Santa Ana Nagoya Japanese maintained role hosts times stopped activities aid us Bamba often cat walk retrieving hung models Several fliers observed timing combined unusu ally cool conditions heavy ground turbulence made difficult master right power Time ran out too quickly Japanese very enthusiastic will strong world-class con tenders very soon already own Cat Indoor World Record following day given tour 400year-old Nagoya castle CBC facilities lunch atop ofthe modem skyscrapers received calculators cloisonne trays gracious CBC hosts afternoon off Tokyo Shinkansen next morning headed small hall city demonstrate Fl D Indoor modeling three major TV networks Imagine being evening news everywhere Japan Later day Harlan left visit automated factories 10 days others banquets sight seeing Though memory now us ever will forget Japanese taught up lessons art being host ever grateful Mr Nonaka making dream come true hope Japanese competitors able glean essence success Letters Editor Continued page 8 means Autogiro has exCeptlonal lateral stability Philippe Ciholas Danville KY 40422 Author Headley responds Since article publishe4 have received letter George Chaulet has developed type model extensively France comments lateral stability turns no problem biggestproblem tha4 occasionally blades rnn other Much chopped balsa Mr Ciholas explanation seems verified above Another letter about same article follows Lets Talk About RC Autogiro Jack Headley interesting informative article 1 36 Model Aviation 3 3/8 BORE ALL SIZES IN B B 10 12 PITCH RIGHT HAND TRACTOR 0 RISK ST JOHN INDIANA 46373 I95 I14000-18000RPM IIn Calif add Soles Tax Shipping $300 no COD2s IVIS.4Brochure 6 US $170 Foreign Add 41/2% Visa Ior Master Card Std Dealer Distributor Discounts L212026 Saticoy Street North Hollywood Calif 91605 EASYBUILT AN0~ MODE LCRAFT 5 SET5 oF 2c PLANS 4sSO PEP SET G2MDSO FOR L lT MUSKOKA HOBBY SUPPLY Box 1444 Bracebridge Ontario P08 iCO Dihedral /K Tip Moves ForwardAnhedral hopefully will stimulate interest type modeL interesting challenge anyone interested single-rotor Autogiro offer following additional comments Obtaining lateral stability seems problem using flapping blades unbalanced rotor lift eliminated stability problem persists inertia aerodynamic damp ening about roll axis much smaller conventional plane twin-rotor Autogiro cause lateral instability layout may criticaL Small wings scale rate gyro may necessary advantage Autogiro over Heli copter Autogiro rotor head much simpler three blades blade must hinged free flap Drag hinges required collective pitch control required cyclic pitch control obtained simply tilting rotor shaft blades rotate about pitch axis no swashplate used Machined rotor heads impressive usable rotor head can constructed hard wood brass tubing music wire ordi nary modeling tools techniques two-blade rotor could simple see-saw arrangement However indication two-blade rotors slow start autorotation may start alL under some flight conditions rotor model Autogiro has tendency stop turning two-channel single-rotor Autogiro should practicaL Autogiro definitely can landed dead-stick no problem Rudder ineffec tive needed Elevators effective eliminate need pitch axis tilt rotor head Rotor tilt aileron can used roll axis control rotor tilt used locate roll tilt axis high mast close rotor practicaL Use good strong servo tilt head about plus/minus 10 degrees Silliam J Kuhnle Richardson TX Avenger Fan noticed item about scratch-built AvengerLetters November1981 MA Ithought 4 4 BFJCANC/1 DECAThLL7ON top quality kit Pilot has wingspan 96 1/3 inches 1519 sq inch area 60 long flies very well 22 Quadra engine Kit features numbered die-cut hand-machined parts pre-cut windows 3-dimensional detailed instrument panel full-side plans photo building guide pre-formed cowl wheel pants plus much moreList Price 0495 E & R Price. $22995 NEW Bellanca Decathlon 40 truly stunning R/C wood snap-lock kit 40 60 size glow engine features larger 1/4 scale model above has wingspan 67 1/4 inches 774 sq inch wing area can used 4-channel radioList Price 3995 E & R Price. $11495 SPECIAL PRICE QB 405 shoulder wing kit Pilot sport model powered 40 engine 4-channel radio wing span QB 40S 59 inchesList Price 6995 E 8 R Price. $ 5299 have other kits stock ranging 52-inch win gspans through 9-feet listed catalog below ENGINES KAWASAKI 315 delivers full 4-h/p less muffler Special $21599 QUADRA R revised Quadra package complete HD motor mount muffler throttle control air-cleaner choke assembly $16995 RADIOS FUTABA hannel FP-6FN complete charger including E & R special heavy-duty 1/4 scale package package contains 1 1800 MAH heavy duty battery pack 4- 1 54 oz extra heavy-duty servos also included 1 -27 oz servo use throttle control include 4 large 1 54 oz servos lets install side wing ailerons Extra 154 oz servos stock want use flaps $4299 eaList Price 6990 Price. $36599 List Price 995 Price. $18699 List. $39995 Price. 95 p~5 R R 1 10 Edgeey ND 56433 t~HobbIeS 701/493-2015 EEtR FUTABA. FN complete 4 S26 servos E&R FUTABA G/K dual rate complete 4 S26 servos E&R E & R Hobbies stocks other items Send $100 catalog Add $600 airplane kit radio engine $300 up 10 pounds accessories UPS handling 4 USEA No 14111 inch No 14222 inch $210$325 Add 20% Poitagel best results use RUFF STUFF 'Self Adhesive Sheet Sandpaper' No glue No drying time Ideal special sanding shapes Adheres materials g5 1 sheets choice Medium Fine Super Fine 66 ea /AXLtJ APPLIED DESIGN CORP Penn Street egundo CA 90245 MarCh 1982 137 MASTER AIRSCREW FLIGHTBOX KIT Master Airscrew Flight Box has features larger boxes compact handy arrangement parts cut imported mahogany plywood will take stain varnlsh paint finishes overall size 19Y2x9Y2x 12 high $3at dealer 495 postpaid California add 6% Sales Tax Propeller storage Gravity closed small parts storage 7/8 aluminum handle Complete instructions & fasteners WINDSOR PROPELLER CO PO Box 112Windsor CA 95492 FEATURES INCLUDE Space battery & meter panel Transmitter compartment e Room gallon fuel super Savings FIberglass MaterIals FiberglassCloth5Sqyards$1500 choice 6 oz cloth Laminating Epoxy Resin 6 hr cure530Odper gal Liquid Mold ReleaseS300 6 ozs Epoxy Primer IK&BI540Oopergal Epoxy PaintThinner K&BSI 5O0per gal Polyester Resin IK&BlS20O0per gal Send check money order shipping collect COD okay Call write aob Smith RIC Aircraft PO Box 33335 Granada Hills CA 91344 213 366-6872 SCALE DOCUMENTATION SCALE DRAWINGTOS 800K ETS \5 EPLA TECH 1931 RNATONA CATALOGS $200 4BSOO MC KENZ E HWY VOA OREGON 974BB 1-IENDERTOON II -- C -5- $4Y f1E 5 &cn C J C- 1OIL 1 CAi r ujaxxsus wuuzu uv uuz su mat someone else shares similar nostalgia K&B 61-powered model isnt elaborate has lots fun pleasure lookers surprised discover well flies originally tail-dragger wing spoilers linked rudder rebuilt following radio failureat time trike gear standard controls installed confident Harold Benjamin have fine airplane Leland W Sloan LaVeme CA upper picture shows Avenger soon after completion its tail-dragger form After rebuilding looks bit djfferent trike gear seem notice engine installation changed inverted upright welL OrganIzation ElectrIc Power Fliers Electric power model aircraft has proven efficient practical mind group electric power enthusiasts have decided form Society Electric Aircraft Modelers SEAM national organization dedicated advancement forms electric-powered model aircraft SEAM affiliated AMA intended serve advisory capacity AMA matters relating electric-powered model aircraft ultimate goal SEAM provide following services its members Information exchange Quarterly newsletter Reprints technical experimental data sheets Direct member-to-member information exchange Product information brochures Contest rules forum types classes FF RC electric-powered model aircraft Promotion regional electric-powered aircraft activities kinds through local SEAM clubs Business directory dealers stock elec tric motors batteries chargers suitable air craft kits Any readers interested form electric-powered model aircraft may have interest organization sort please send name address telephone num ber plus stamped pre-addressed * 10 business size envelope address below SEAM Frank Heacox 11632 Flamingo Dr Garden Grove CA 92644 Special interest groups areas air plane modeling have very helpful co ordinating activities seeing well being thei interests Perhaps SEAM will soon take its place alongside others 138 Model Aviation inLooking Hard Find Soaring Goodies 17Ae &zLfane llaclory o has complete comprehensive line RIO Soaring products everexist North America o Our line products includes some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/O soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Factory717 244 4508 PO Box 341 Red Lion PA 17356 9am 9pm EST PS Come see displays 1982 WRAMS & TOLEDO showsin