Radio Technique. GeorgeMyers OWNERS MRC772 systems will find bunch useful ideas figures 1 2 positions sticks Fig 1 tell story Observe right-hand stick Normally moves left/right across case case stick assembly has removed rotated 900 clockwise reinstalled simple matter removing replacing four screws stick has also freed move two directions hence its posi tion corner opening Notice left-hand stick Normally moves up/down relative case too has removed rotated 900 reinstalled Note also left-hand stick de flected full right though no finger touching Fig 2 gives secret away pair devises some Nyrod inner tubing couple pieces bent wire some scraps wood epoxy have coupled two sticks mechanically converting system normal two-axis operation very little cost have systems photos tell you need know make similar mod go blessings better leave alone foregoing mod brainchild Henry E Hank Prew Assistant Director Nassau County Office Public Transportation Long Island NY both live Some years back Hank worked Grumman Aerospace Corp now best known experiments low-speed airfoils Coupe DHiver HLG Hank always has improve change anything gets hands time think hes got winner dont photos shows Tom Marco 106-in Fokker Eindecker monster Quadra-powered uses cardboard construction weighs 30 pounds guided Hobby Lobby 6 radio Nick Ziroli reports tiny Hobby Lobby servos overpowered control surfaces gentlest horizontal flight Another photo shows Nicks 2W-per-foot scale Corsair silk-covered plywood spruce con struction model weighs 20 pounds now powered Quadra have seen model perform loops rolls stall turns guidance Kraft using KPS-15 servos Nick reports servos blow down flight havent yet shown unusual wear Therein hangs tale Lacking design information control system hinge moments aver age modeler contemplates mon ster left cut try primary way find out what size servo needed given job penalty guessing wrong can very expensive crash What protect self First such large planes get biggest servo can Nothing smaller Kraft KPS-15 Futaba Sl5M example Next mount servo substantial way push/pull forces should run along long dimen sion never across short dimension rocking motion uses up 16 Model Aviation Fig 1 2 Interesting mod MRC 772 system Henry E Prew Left Righthand stick assembly rotated 90 degrees clockwise also treed move two directions Lefthand stick rotated 90 degreesnote position stick though touched Right two sticks coupled mechanically see text converting system normal two-axis operation Inexpensive mod requires two devises various scraps Spanning almost nine feet Tom Marcos Eindecker uses cardboard construction weighs almost 30 pounds Quadra powered Looks easy build good proportions Photo Nick Ziroli control stroke Use rigid well-supported pushrods control horns devises Push control surfaces should very little motion before servo starts turn backwards Now youre getting best available perform ance servos Now test flying isolated area cant damage As soon have plane trimmed out safe level flight begin making short dives time dive increase diving angle about 100 steeper before Look condition feel elevators arent working should dive angle airspeed limiting condition same other controls Books have written attempting explain calculate forces aero dynamic control surfaces equations long complicated summary tell airspeed 6 load de flection angle airplane stability pitch yaw roll damping inherent airplane shape determine control surface airloads assuming con figuration has specified case scale model starting scratch must consider things like aspect ratio long thin vs short fat hinge location leading edge vs buried behind leading edge control-surface gap whether will use some overhanging balance area reduce hinge torque also possible fly airplane using free-floating control surface hooked servo controlling surface servo-controlled trim tab moves opposite direction what expect main control surface Whatever choose fac tors addition stated above just make cheese binding shape leading trailing edges control surface have strong fluence control hinge moments So dont waste lot time trying calculate what need time would better spent measuring actual forces spring scale hold model parts thereof out window moving automobile Fig 5 lists output several servos taken manufacturers literature general figures apply new servo quote torque exists servo stalled drawing maximum current stalled servo can pushed position stated torque flight can expect stated torque will result minimum aerody namic control servo will twist control surface whatever deflection angle produces rated torque acting against airstream angle see ground means nothing Going back what said before use biggest servo can get con servative test program Keep records Tear down system time time inspect damage write up what have learned send Model Aviation editor finds acceptable Continued page 96 Fig 5 An Assortment Commercially-Available Servos MfrTypeSize CinchesWt oz Cox/Sanwa80306 Futaba514 69x1 13x1 19 75x1 49x20l 92x1 49x21 1 92x1 98x2l 1 PLS-1 189x1 55x238 89x1 59x270 1 5x293x350 91x141x190 94x1 63x228 75x1 69x238 94x1 63x228 1 5x293x350 91 x20x244 1 5x1 375x75 1 75x1 625x92 085 140 180 210 200 230 880 210 175 125 175 880 210 125 200 Rotary 90 05 sec/i 00 Rotary 05 sec/100 Rotary 3sec/180 Rotary 058 sec/90 55 lbs.625 push-pull 30 az/in05 sec/100 Rotary 167 az/inRotary 90 445 az/in Rotary 90 4 lb05 sec/90e Rotary 4 lb05 sec/90 Rotary 6 lb05 sec/90 Rotary 218 inch stroke 38 sec 48/85 lbsRotary 90 5 lb05 sec/90 Rotary 300 az/in05 sec/90 Rotary 222 az/in 170 az/in 380 ozAn 666 az/in Smallest GP Average GP Boat & car steering Landing gear retraction GP Waterproofed GP Large high torque Ball-bearinged output wheel Available kit Available kit High-torque motor Sail winch GP w/gear options Average size GP Average size GP Note 5 lbs thrust generally similar 35 az/in torque March1979 17 Dramatic shot Nick ziroli making low pass monster 193 F4U-1 corsair George snapped pic ship OS Max 60 powered using DuBro prop drive Performance improvement Quadra installed phenomenal Prop 20 x 6 Dont jump conclusions however thisis product comparison depends upon individual aircraft specifications Futaba Kraft Kraft Kraft Pro Line S20 K P5-14 KPS-15H KPS-1 6 Force Motion Remarks Futaba Heath Heath Heath Futaba Royal Ace World Eng 51 SM 12054 1205-5 1205-8 Sb Chevron Bantam 5-11 SEND COUPON AND 250 FOR YOUR CATALOG TODAY weight proportional square velocity weight 2 2 times pattern ship velocity 2/3 pattern ship monsters will less damagingor perhaps equal under worst condition Horsepower limitations 2 hp-3 hp will limit speeds weights sizes F F Van Keurin Jr Greenville MS Oh Beautiful Bird am writing reference picture page 38 November issue Model Aviation lower lefthand corner Tom Stark Bird model am RC flier senior citizen Years back flew Bird its five cylinder Kinner Would please put touch Tom Stark would love get set plans model model back thirties greatest Thank help can give matter am enclosing self-addressed stamped envelope reply Arthur F Cervenka Oakdale NY have put Mr Cervenka touch Tom Stark Bird incidentally regarded have truly excellent airplane RC Technique/Myers continued page 17 article will paid itif send form publishable article send letter editor uses get just glory Finally could send informa tion get enough build item Name Address City StateZip Send MIDWEST PRODUCTS CO h4Hoba Indiana 46342 71400 South Indiana SI MA column will credit source magazine will pay $5 $15 contribution Its up you word Academy have meaning have share knowledge Thats another month Got get back Technicians course Keep writing George Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Aerobatics/Van Putte continued page 25 accident can have humorous side Cedar Rapids Skyhawks Log book edited Richard Hayslip con tains periodic articles written Ed Coc ciola entitled Notes Novices entire article November issue decided month guy will stick hand 14 prop being turned 60 engine let take five gashes half fingernail dont need giving advice nobody parts country clubs involved activities other flying since its too cold fly Before get irate letters Alaska Michigan North Dakota other states people fly year-round want make clear also RC fliers state Florida dont fly couple months during winter because its too cold know guys very well shave face morning cold weather activities never quite enjoyable flying warm sunshine can make winter bearable popular club cold weather activities conducting monthly indoor contests airplanes can built variety rules flown available large areas enjoyable indoor contests ever competed held 15 X 30 foot room nine-foot ceiling school gymnasium available better Some fellow club members sure surprise unexpected talent build ing flying indoor models An event might like tackle sponsorship Delta Dart program Local scouting other youth organ iza tions usually delighted have club sponsor such activity Besides theres lot satisfaction derived helping kids make first flying models Write AMA information about get involved have airplanes engines radio equipment assorted modeling accessories dont use sponsor club auction Almost modelers have something theyd like have taken off hands some can use get few bucks back selling something dont use better protect sellers some valuable items club auctions allow designation minimum acceptable bid require seller buy item bidding doesnt go high enough Its lot fun might manage buy something youve looking course us use cold weather building projects am no exception winter intend undertake build ing project has thinking stage quite House Balsa Y2A airplanes have always interested because obvious quality kit materials plans instructions ever never seen fly re luctant invest time air planes Two weeks ago oppor tunity fly House Balsa FW 190 experience convinced go ahead project FW 190 has some difficulty getting off ground since doesnt have steer able tailwheel has ailerons instead rudder However once airplane gets flying speed just like pattern air plane both stable responsive definitely beginners airplane course wind does bother airplane size 60-powered airplane wind about 10 mph day flew FW 190 no problems much fun winter project now building board choice House Balsa Beechcraft Bonanza Robart tricycle re tractable landing gear 05 10 FSR tricycle landing gear will eliminate ground handling problems associated tail-draggers bigger engine will help make up extra weight caused retractable landing gear plan use Royal receiver RS-5 servos built up kits 96 Model Aviation Please Print UContiol ARows FOUR NEW RACE READY DESIGNS JOIN THE MIDWEST COMPLETE KIT LINE
Edition: Model Aviation - 1979/03
Page Numbers: 16, 17, 96
Radio Technique. GeorgeMyers OWNERS MRC772 systems will find bunch useful ideas figures 1 2 positions sticks Fig 1 tell story Observe right-hand stick Normally moves left/right across case case stick assembly has removed rotated 900 clockwise reinstalled simple matter removing replacing four screws stick has also freed move two directions hence its posi tion corner opening Notice left-hand stick Normally moves up/down relative case too has removed rotated 900 reinstalled Note also left-hand stick de flected full right though no finger touching Fig 2 gives secret away pair devises some Nyrod inner tubing couple pieces bent wire some scraps wood epoxy have coupled two sticks mechanically converting system normal two-axis operation very little cost have systems photos tell you need know make similar mod go blessings better leave alone foregoing mod brainchild Henry E Hank Prew Assistant Director Nassau County Office Public Transportation Long Island NY both live Some years back Hank worked Grumman Aerospace Corp now best known experiments low-speed airfoils Coupe DHiver HLG Hank always has improve change anything gets hands time think hes got winner dont photos shows Tom Marco 106-in Fokker Eindecker monster Quadra-powered uses cardboard construction weighs 30 pounds guided Hobby Lobby 6 radio Nick Ziroli reports tiny Hobby Lobby servos overpowered control surfaces gentlest horizontal flight Another photo shows Nicks 2W-per-foot scale Corsair silk-covered plywood spruce con struction model weighs 20 pounds now powered Quadra have seen model perform loops rolls stall turns guidance Kraft using KPS-15 servos Nick reports servos blow down flight havent yet shown unusual wear Therein hangs tale Lacking design information control system hinge moments aver age modeler contemplates mon ster left cut try primary way find out what size servo needed given job penalty guessing wrong can very expensive crash What protect self First such large planes get biggest servo can Nothing smaller Kraft KPS-15 Futaba Sl5M example Next mount servo substantial way push/pull forces should run along long dimen sion never across short dimension rocking motion uses up 16 Model Aviation Fig 1 2 Interesting mod MRC 772 system Henry E Prew Left Righthand stick assembly rotated 90 degrees clockwise also treed move two directions Lefthand stick rotated 90 degreesnote position stick though touched Right two sticks coupled mechanically see text converting system normal two-axis operation Inexpensive mod requires two devises various scraps Spanning almost nine feet Tom Marcos Eindecker uses cardboard construction weighs almost 30 pounds Quadra powered Looks easy build good proportions Photo Nick Ziroli control stroke Use rigid well-supported pushrods control horns devises Push control surfaces should very little motion before servo starts turn backwards Now youre getting best available perform ance servos Now test flying isolated area cant damage As soon have plane trimmed out safe level flight begin making short dives time dive increase diving angle about 100 steeper before Look condition feel elevators arent working should dive angle airspeed limiting condition same other controls Books have written attempting explain calculate forces aero dynamic control surfaces equations long complicated summary tell airspeed 6 load de flection angle airplane stability pitch yaw roll damping inherent airplane shape determine control surface airloads assuming con figuration has specified case scale model starting scratch must consider things like aspect ratio long thin vs short fat hinge location leading edge vs buried behind leading edge control-surface gap whether will use some overhanging balance area reduce hinge torque also possible fly airplane using free-floating control surface hooked servo controlling surface servo-controlled trim tab moves opposite direction what expect main control surface Whatever choose fac tors addition stated above just make cheese binding shape leading trailing edges control surface have strong fluence control hinge moments So dont waste lot time trying calculate what need time would better spent measuring actual forces spring scale hold model parts thereof out window moving automobile Fig 5 lists output several servos taken manufacturers literature general figures apply new servo quote torque exists servo stalled drawing maximum current stalled servo can pushed position stated torque flight can expect stated torque will result minimum aerody namic control servo will twist control surface whatever deflection angle produces rated torque acting against airstream angle see ground means nothing Going back what said before use biggest servo can get con servative test program Keep records Tear down system time time inspect damage write up what have learned send Model Aviation editor finds acceptable Continued page 96 Fig 5 An Assortment Commercially-Available Servos MfrTypeSize CinchesWt oz Cox/Sanwa80306 Futaba514 69x1 13x1 19 75x1 49x20l 92x1 49x21 1 92x1 98x2l 1 PLS-1 189x1 55x238 89x1 59x270 1 5x293x350 91x141x190 94x1 63x228 75x1 69x238 94x1 63x228 1 5x293x350 91 x20x244 1 5x1 375x75 1 75x1 625x92 085 140 180 210 200 230 880 210 175 125 175 880 210 125 200 Rotary 90 05 sec/i 00 Rotary 05 sec/100 Rotary 3sec/180 Rotary 058 sec/90 55 lbs.625 push-pull 30 az/in05 sec/100 Rotary 167 az/inRotary 90 445 az/in Rotary 90 4 lb05 sec/90e Rotary 4 lb05 sec/90 Rotary 6 lb05 sec/90 Rotary 218 inch stroke 38 sec 48/85 lbsRotary 90 5 lb05 sec/90 Rotary 300 az/in05 sec/90 Rotary 222 az/in 170 az/in 380 ozAn 666 az/in Smallest GP Average GP Boat & car steering Landing gear retraction GP Waterproofed GP Large high torque Ball-bearinged output wheel Available kit Available kit High-torque motor Sail winch GP w/gear options Average size GP Average size GP Note 5 lbs thrust generally similar 35 az/in torque March1979 17 Dramatic shot Nick ziroli making low pass monster 193 F4U-1 corsair George snapped pic ship OS Max 60 powered using DuBro prop drive Performance improvement Quadra installed phenomenal Prop 20 x 6 Dont jump conclusions however thisis product comparison depends upon individual aircraft specifications Futaba Kraft Kraft Kraft Pro Line S20 K P5-14 KPS-15H KPS-1 6 Force Motion Remarks Futaba Heath Heath Heath Futaba Royal Ace World Eng 51 SM 12054 1205-5 1205-8 Sb Chevron Bantam 5-11 SEND COUPON AND 250 FOR YOUR CATALOG TODAY weight proportional square velocity weight 2 2 times pattern ship velocity 2/3 pattern ship monsters will less damagingor perhaps equal under worst condition Horsepower limitations 2 hp-3 hp will limit speeds weights sizes F F Van Keurin Jr Greenville MS Oh Beautiful Bird am writing reference picture page 38 November issue Model Aviation lower lefthand corner Tom Stark Bird model am RC flier senior citizen Years back flew Bird its five cylinder Kinner Would please put touch Tom Stark would love get set plans model model back thirties greatest Thank help can give matter am enclosing self-addressed stamped envelope reply Arthur F Cervenka Oakdale NY have put Mr Cervenka touch Tom Stark Bird incidentally regarded have truly excellent airplane RC Technique/Myers continued page 17 article will paid itif send form publishable article send letter editor uses get just glory Finally could send informa tion get enough build item Name Address City StateZip Send MIDWEST PRODUCTS CO h4Hoba Indiana 46342 71400 South Indiana SI MA column will credit source magazine will pay $5 $15 contribution Its up you word Academy have meaning have share knowledge Thats another month Got get back Technicians course Keep writing George Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Aerobatics/Van Putte continued page 25 accident can have humorous side Cedar Rapids Skyhawks Log book edited Richard Hayslip con tains periodic articles written Ed Coc ciola entitled Notes Novices entire article November issue decided month guy will stick hand 14 prop being turned 60 engine let take five gashes half fingernail dont need giving advice nobody parts country clubs involved activities other flying since its too cold fly Before get irate letters Alaska Michigan North Dakota other states people fly year-round want make clear also RC fliers state Florida dont fly couple months during winter because its too cold know guys very well shave face morning cold weather activities never quite enjoyable flying warm sunshine can make winter bearable popular club cold weather activities conducting monthly indoor contests airplanes can built variety rules flown available large areas enjoyable indoor contests ever competed held 15 X 30 foot room nine-foot ceiling school gymnasium available better Some fellow club members sure surprise unexpected talent build ing flying indoor models An event might like tackle sponsorship Delta Dart program Local scouting other youth organ iza tions usually delighted have club sponsor such activity Besides theres lot satisfaction derived helping kids make first flying models Write AMA information about get involved have airplanes engines radio equipment assorted modeling accessories dont use sponsor club auction Almost modelers have something theyd like have taken off hands some can use get few bucks back selling something dont use better protect sellers some valuable items club auctions allow designation minimum acceptable bid require seller buy item bidding doesnt go high enough Its lot fun might manage buy something youve looking course us use cold weather building projects am no exception winter intend undertake build ing project has thinking stage quite House Balsa Y2A airplanes have always interested because obvious quality kit materials plans instructions ever never seen fly re luctant invest time air planes Two weeks ago oppor tunity fly House Balsa FW 190 experience convinced go ahead project FW 190 has some difficulty getting off ground since doesnt have steer able tailwheel has ailerons instead rudder However once airplane gets flying speed just like pattern air plane both stable responsive definitely beginners airplane course wind does bother airplane size 60-powered airplane wind about 10 mph day flew FW 190 no problems much fun winter project now building board choice House Balsa Beechcraft Bonanza Robart tricycle re tractable landing gear 05 10 FSR tricycle landing gear will eliminate ground handling problems associated tail-draggers bigger engine will help make up extra weight caused retractable landing gear plan use Royal receiver RS-5 servos built up kits 96 Model Aviation Please Print UContiol ARows FOUR NEW RACE READY DESIGNS JOIN THE MIDWEST COMPLETE KIT LINE
Edition: Model Aviation - 1979/03
Page Numbers: 16, 17, 96
Radio Technique. GeorgeMyers OWNERS MRC772 systems will find bunch useful ideas figures 1 2 positions sticks Fig 1 tell story Observe right-hand stick Normally moves left/right across case case stick assembly has removed rotated 900 clockwise reinstalled simple matter removing replacing four screws stick has also freed move two directions hence its posi tion corner opening Notice left-hand stick Normally moves up/down relative case too has removed rotated 900 reinstalled Note also left-hand stick de flected full right though no finger touching Fig 2 gives secret away pair devises some Nyrod inner tubing couple pieces bent wire some scraps wood epoxy have coupled two sticks mechanically converting system normal two-axis operation very little cost have systems photos tell you need know make similar mod go blessings better leave alone foregoing mod brainchild Henry E Hank Prew Assistant Director Nassau County Office Public Transportation Long Island NY both live Some years back Hank worked Grumman Aerospace Corp now best known experiments low-speed airfoils Coupe DHiver HLG Hank always has improve change anything gets hands time think hes got winner dont photos shows Tom Marco 106-in Fokker Eindecker monster Quadra-powered uses cardboard construction weighs 30 pounds guided Hobby Lobby 6 radio Nick Ziroli reports tiny Hobby Lobby servos overpowered control surfaces gentlest horizontal flight Another photo shows Nicks 2W-per-foot scale Corsair silk-covered plywood spruce con struction model weighs 20 pounds now powered Quadra have seen model perform loops rolls stall turns guidance Kraft using KPS-15 servos Nick reports servos blow down flight havent yet shown unusual wear Therein hangs tale Lacking design information control system hinge moments aver age modeler contemplates mon ster left cut try primary way find out what size servo needed given job penalty guessing wrong can very expensive crash What protect self First such large planes get biggest servo can Nothing smaller Kraft KPS-15 Futaba Sl5M example Next mount servo substantial way push/pull forces should run along long dimen sion never across short dimension rocking motion uses up 16 Model Aviation Fig 1 2 Interesting mod MRC 772 system Henry E Prew Left Righthand stick assembly rotated 90 degrees clockwise also treed move two directions Lefthand stick rotated 90 degreesnote position stick though touched Right two sticks coupled mechanically see text converting system normal two-axis operation Inexpensive mod requires two devises various scraps Spanning almost nine feet Tom Marcos Eindecker uses cardboard construction weighs almost 30 pounds Quadra powered Looks easy build good proportions Photo Nick Ziroli control stroke Use rigid well-supported pushrods control horns devises Push control surfaces should very little motion before servo starts turn backwards Now youre getting best available perform ance servos Now test flying isolated area cant damage As soon have plane trimmed out safe level flight begin making short dives time dive increase diving angle about 100 steeper before Look condition feel elevators arent working should dive angle airspeed limiting condition same other controls Books have written attempting explain calculate forces aero dynamic control surfaces equations long complicated summary tell airspeed 6 load de flection angle airplane stability pitch yaw roll damping inherent airplane shape determine control surface airloads assuming con figuration has specified case scale model starting scratch must consider things like aspect ratio long thin vs short fat hinge location leading edge vs buried behind leading edge control-surface gap whether will use some overhanging balance area reduce hinge torque also possible fly airplane using free-floating control surface hooked servo controlling surface servo-controlled trim tab moves opposite direction what expect main control surface Whatever choose fac tors addition stated above just make cheese binding shape leading trailing edges control surface have strong fluence control hinge moments So dont waste lot time trying calculate what need time would better spent measuring actual forces spring scale hold model parts thereof out window moving automobile Fig 5 lists output several servos taken manufacturers literature general figures apply new servo quote torque exists servo stalled drawing maximum current stalled servo can pushed position stated torque flight can expect stated torque will result minimum aerody namic control servo will twist control surface whatever deflection angle produces rated torque acting against airstream angle see ground means nothing Going back what said before use biggest servo can get con servative test program Keep records Tear down system time time inspect damage write up what have learned send Model Aviation editor finds acceptable Continued page 96 Fig 5 An Assortment Commercially-Available Servos MfrTypeSize CinchesWt oz Cox/Sanwa80306 Futaba514 69x1 13x1 19 75x1 49x20l 92x1 49x21 1 92x1 98x2l 1 PLS-1 189x1 55x238 89x1 59x270 1 5x293x350 91x141x190 94x1 63x228 75x1 69x238 94x1 63x228 1 5x293x350 91 x20x244 1 5x1 375x75 1 75x1 625x92 085 140 180 210 200 230 880 210 175 125 175 880 210 125 200 Rotary 90 05 sec/i 00 Rotary 05 sec/100 Rotary 3sec/180 Rotary 058 sec/90 55 lbs.625 push-pull 30 az/in05 sec/100 Rotary 167 az/inRotary 90 445 az/in Rotary 90 4 lb05 sec/90e Rotary 4 lb05 sec/90 Rotary 6 lb05 sec/90 Rotary 218 inch stroke 38 sec 48/85 lbsRotary 90 5 lb05 sec/90 Rotary 300 az/in05 sec/90 Rotary 222 az/in 170 az/in 380 ozAn 666 az/in Smallest GP Average GP Boat & car steering Landing gear retraction GP Waterproofed GP Large high torque Ball-bearinged output wheel Available kit Available kit High-torque motor Sail winch GP w/gear options Average size GP Average size GP Note 5 lbs thrust generally similar 35 az/in torque March1979 17 Dramatic shot Nick ziroli making low pass monster 193 F4U-1 corsair George snapped pic ship OS Max 60 powered using DuBro prop drive Performance improvement Quadra installed phenomenal Prop 20 x 6 Dont jump conclusions however thisis product comparison depends upon individual aircraft specifications Futaba Kraft Kraft Kraft Pro Line S20 K P5-14 KPS-15H KPS-1 6 Force Motion Remarks Futaba Heath Heath Heath Futaba Royal Ace World Eng 51 SM 12054 1205-5 1205-8 Sb Chevron Bantam 5-11 SEND COUPON AND 250 FOR YOUR CATALOG TODAY weight proportional square velocity weight 2 2 times pattern ship velocity 2/3 pattern ship monsters will less damagingor perhaps equal under worst condition Horsepower limitations 2 hp-3 hp will limit speeds weights sizes F F Van Keurin Jr Greenville MS Oh Beautiful Bird am writing reference picture page 38 November issue Model Aviation lower lefthand corner Tom Stark Bird model am RC flier senior citizen Years back flew Bird its five cylinder Kinner Would please put touch Tom Stark would love get set plans model model back thirties greatest Thank help can give matter am enclosing self-addressed stamped envelope reply Arthur F Cervenka Oakdale NY have put Mr Cervenka touch Tom Stark Bird incidentally regarded have truly excellent airplane RC Technique/Myers continued page 17 article will paid itif send form publishable article send letter editor uses get just glory Finally could send informa tion get enough build item Name Address City StateZip Send MIDWEST PRODUCTS CO h4Hoba Indiana 46342 71400 South Indiana SI MA column will credit source magazine will pay $5 $15 contribution Its up you word Academy have meaning have share knowledge Thats another month Got get back Technicians course Keep writing George Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Aerobatics/Van Putte continued page 25 accident can have humorous side Cedar Rapids Skyhawks Log book edited Richard Hayslip con tains periodic articles written Ed Coc ciola entitled Notes Novices entire article November issue decided month guy will stick hand 14 prop being turned 60 engine let take five gashes half fingernail dont need giving advice nobody parts country clubs involved activities other flying since its too cold fly Before get irate letters Alaska Michigan North Dakota other states people fly year-round want make clear also RC fliers state Florida dont fly couple months during winter because its too cold know guys very well shave face morning cold weather activities never quite enjoyable flying warm sunshine can make winter bearable popular club cold weather activities conducting monthly indoor contests airplanes can built variety rules flown available large areas enjoyable indoor contests ever competed held 15 X 30 foot room nine-foot ceiling school gymnasium available better Some fellow club members sure surprise unexpected talent build ing flying indoor models An event might like tackle sponsorship Delta Dart program Local scouting other youth organ iza tions usually delighted have club sponsor such activity Besides theres lot satisfaction derived helping kids make first flying models Write AMA information about get involved have airplanes engines radio equipment assorted modeling accessories dont use sponsor club auction Almost modelers have something theyd like have taken off hands some can use get few bucks back selling something dont use better protect sellers some valuable items club auctions allow designation minimum acceptable bid require seller buy item bidding doesnt go high enough Its lot fun might manage buy something youve looking course us use cold weather building projects am no exception winter intend undertake build ing project has thinking stage quite House Balsa Y2A airplanes have always interested because obvious quality kit materials plans instructions ever never seen fly re luctant invest time air planes Two weeks ago oppor tunity fly House Balsa FW 190 experience convinced go ahead project FW 190 has some difficulty getting off ground since doesnt have steer able tailwheel has ailerons instead rudder However once airplane gets flying speed just like pattern air plane both stable responsive definitely beginners airplane course wind does bother airplane size 60-powered airplane wind about 10 mph day flew FW 190 no problems much fun winter project now building board choice House Balsa Beechcraft Bonanza Robart tricycle re tractable landing gear 05 10 FSR tricycle landing gear will eliminate ground handling problems associated tail-draggers bigger engine will help make up extra weight caused retractable landing gear plan use Royal receiver RS-5 servos built up kits 96 Model Aviation Please Print UContiol ARows FOUR NEW RACE READY DESIGNS JOIN THE MIDWEST COMPLETE KIT LINE