Radio Control Bud Atkinson THERE SEEMS something about war bird stirs imagination true regardless what insignia carries 1918 1961 war birds built specified purposeto oppose adversary hope fully out-fly out-bomb out-guess oppo nent Rhinebeck Confederate Air Force other air shows around world dem onstrate love curiosity about fighting air machine point am aiming first-hand inspection detail color markings past birds WW II buffs have missed great opportunity life time havent seen Confederate Air Force fly able inspect touch wonderful birds Im sure inspired scale modeler has seen WW WW II airplane marched home build favorite war bird Im sure case manufacturers Scale Stand-off Scale because have such fine selection subjects problems both WWI WWII aircraft semiflat camouflage paint jobs Much has written subject finishes still camouflaging problem Several years ago presented problem did research subject came up product called Cam-o-sheen added Gazelle Modifications chose Schluter Gazelle chose good helicopter machine end product Schluters helicopter evaluation machine simple set up normally flies first attempt after little time machine comes apparent its present configuration its maneuverability limited some re spects can disastrous have done extensive testing developing mods heli copter can now tell can made quick aerobatic wish Fuselage disastrous things happen helicopter have lacquer enamel dope nitrate butyrate different amounts will give flat dull finish damaging fuel-proof quality material may added clear dope protect flatting detailing decals Just recently KCRC scale friend Fred Hulen has used K & B epoxy paint Nam T-28yes T-28 used Vietnam camouflaged results great So will work K&B epoxy Im sure about other epoxy paint degree flat Walt Schoonard main rotor cut tail boom off tail first hard landing can really destroy machine terribly demoralizing situation get happened several friends After trying longer output shafts shorter blades lots other things too finally discovered what happening found blades could bent down tail cone no matter hard tried clamped Gazelle bench lifted tail cone bent blades down sudden could see what happening fuselage collapsing right under dummy engine nacelle allowing tail come up naturally depends amount Com-o sheen experiment before applying model two sources Cam-o-sheen Ace Radio Control Higgensville Mo KRD Products Kens R/C10915 W 59th Terr Shawnee Kan 66203 can guarantee will obtain scale-like camouflage finish Dont overdo amount flat Most full-scale cam ouflage paint jobs dead flat rather semi-gloss think too fine scale models over flat realistic have badly weathered become dead flat get chance visit Air Force museum Day ton take good look fine examples war birds have display have yet find anything else will give desired sheen want try Cam-o-sheen next camouflage paint job let know like dont intend complete review scale kits column will give run down new Scale Stand-off Scale kits affiliated products such kit Sigs new Stand-off bi plane Steen Skybolt Its fully acrobatic kit shows both scale dual ailerons well non-scale strip aileron would like just sport plane believe Skybolt best proportioned biplanes date good Stand-off copy full-size Skybolt designed RC modeler shows its appearance RC model mind well full-size man-carrying hicontinued page 80 Impossible tell real thing ex citing Jet Ranger Aubrey Radfords head high yo-yo 360-degree circle blades coming downdisaster simple remedy instantly worked out gluing IX ical balsa post top bottom tail cone just aft tail cone beginning cutting Out tail rotor shaftthe tail cone now cannot moved have made tail first landings since have such problems Constant Blade Speed Tail Rotor Mix have never liked percentage throttle col lective type setup machine collec tive pitch Also dont like correct torque effect adding subtracting tail rotor com mands first step solve problem develop servo cam see picture would give essentially full throttle half stick out giving enough collective make ma chine squirm ground After making servo cams fenalic board 3/32 thick care recall finally got what after zero-throttle stick position halfthrottle stick position carb needs opened full required bending throttle arm closer barrel center have faster response shorter distance travel other words half servo travel need get full throttle throttle pushrod properly located servo cam balance servo travel across servo doesnt affect throttle Now opposite side cam must locate collective pushrod very little collective realized half-throttle stick greater degree available last half stick continued page 68 28 Model Aviation Scale Ryan Sts have good proportions RC single-place version Meril Davidson Helicopters * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAFITCH 50/o3 63 732A4 82456 94677 10466W 7 EW 106EW* 114 5W 67 7 7 7 8 116EW 11%67 126 125W0 1256 1456 155 164 *W WIDE BLADE EW EXTRA WIDE ALL NEW SERIES 400 B FOR SPEED & RACING NEW ADVANCED DESIGN TERRIFIC INCREASE IN THRUST 8 SPEED LEADING SPEED RECORD HOLDER 72 73 74 DIAPITCHPRICE 46/, 785 45 5'85 678895 7566N7 1011100 8899N105 8777125 9777 1213125 N NARROW PRICE 75 75 100 100 105 115 120 130 135 135 140 145 165 185 225 275 RC Helicopters continued page 28 movement Now have constant blade speed selective collective disturbing throttle setting setup now demands tail rotor mix because add collective adding torque have no way compensate except tail rotor command precise enough make rapid climbs de scents Y servo connector extra servo trim barr able acquire tailrotor mix automatically use golden rod tail-rotor pushrods mounted left side fuselage mounted tailrotor servo mix servo side side Gazelle rather crowded has worked out really well 40-60 percent mix has worked out almost perfectly mix set up lift-off tail-rotor pitch shaft vertical have full travel tail-rotor command still left tail-rotor pitch setting should start 8 degrees positive lift-off will have vary depending partIc ular blades engine Head Modification Collective Setup have never liked head-tilt rubber grommets furnished kit start wear out rapidly head tilts centers no change resistance AISOr transitional take-off tend let head tilt tilt machine consequently ma neuvering helicopter cause unwanted bunts extreme makes unpredictable control unsightly jerking machine As wearr gets worse problem gave headaches anything else solu tion hard find After long hours building testing different devices give increasing centering pressure head have developed rotor stabilizer solved problem Quite few given Gazelle pilots try comment have reported fantastic smoothness instant control response sceptic loaned entire rotor head blade assembly should have seen ear ear grin soon lifted off Needless say bought head stabilizer spot Now have constant blade speed tailrotor mixr super stable smooth ma chine need blade pitch available manual tells exceed 6 degrees positive pitchwell forget want maneuvers order leap off ground make rapid descents sudden StOPOr have got have lot pitch available machine going get solved making pitch crank transmission out l/ music wire twice throw supplied course meant replacing brass tubing trans mission also /s ID tubing Now need forget what manual says about pitch setup Using pitch gauges symmetrical blades half throttle stick should have 4 degrees positive pitch arm trans mission thats long black left should slightly forward vertical helicopter will fly squirm pitch stabilizer fly-bar should set ting about 1/3 way up bottom hole operates full throttle stick full collective fly-bar should 2/3 way bottom large holes head tilting fly-bar its extreme blade pitch arms should respectively touch top bottom simultaneously have done work right up point should have least 10 degrees pitch setting 68 Model Aviation HIGH PERFORMANCE * COMPETITION PROVEN w -J 4 U Lfl C, 0 Vertical tail cone support Disaster tail cone support ASK yOUR DEALER Gazelle servo layout collective low position Products mentioned text HR VIXEN 2l95 2I/2PATT R R N VIXEN has adoantage beng troall economiOal Solid end operate itsdarearequiringatwo-channel radjOeritli Span3d miniatono teroos small battery pack Kit WoecIgO sq toatores include prenision handlawed sanded wsgtt.sg 00 parts Ace foam wing complete hardware EngineCoo TD 549051 CnntroltAilerOnandelsnato Fo prompt dglitgry tend castriers theck money ordor adding 8155 dripping handling Wisconsin residents add 4% salen tao Sorry no COD orders CONCEPT MODELS Voor Deoler Order Direot fIwwd CuAuttuhotv AIRPLANE SAVING BOOKS EVERYTHING YOU SHOULD KNOW ABOUT RADIO CONTROL FLYING IS FULLY ILLUSTRATED BEGINNERS BOOK EASY-TOUNDERSTAND LEARNING SYSTEM .........5395 THE CRASHLESS WAY ADVANCED RADIO CONTROL ILYIN6 4 4 THE CRASHLESS WAY TO ADVANCED RADIO CONTROL FLYING GIVES YOU FACTS AND INFORMATION TO AVOID FRUSTRATIONS AND HAVE MORE FUN HOW TO FLY UCONTROL BY WELL KNOWN DICK MATHIS IS FULLY ILLUS TRATED BEGINNERS BOOK COVERS EVERYTHING FROM LEARNING TO FLYING STUNTS$295 frorold Cunninqhonla ALMOST CRASH PROOF PREFORMED PLYWOOD CONSTRUCTION FOR 19 TO 25 ENGINESRETAIL PRICE$2995 AT YOUR LOCAL DEALERS OR ORDER DIRECT J4 d/ irnny flIkN MII Boe Tec 76250 Windy Day Fun Flier STORM FIGHTER 8-6 DESIGNED FOR THE R C FLIER THAT USUALLY STAYS HOME WHEN THE WIND IS BLOWING Ssormfighter especially designed fly safely ic high winds Its quick easy haild Its tor Sunday Flyer instructions enclosed conversion slow trainer can take hangups learning Blade HoldersFly-Bar Paddles Traitsmission Support About flOW YOU going begin notice blade holders going take strain also wont keep track setting will change quick torn Blade holders consequently developed will stand anything put through also permit pitch setting Allen wrench 12-mm lead angle has always difficult maintain old blade holders hard head has able dislodge holders blades themselves can shortened much 1 inches increase blade speed also helps quicken Gazelle Make sure entire head fully assembled blades balanced suPporting via flybar fly-bar paddles should have 27 5/16 holes identically drilled lighten paddles speed up cyclic steering ears transmission tend crack break machine becomes responsive development transmission support ties two transmission plates together has elimi nated problem see picture Fiberglass Cooling Shroud have probably frustrated plastic cooling duct supplied kit fatigues cracks nothing seems stop solved coating inside duct mold release laying up couple layers 6 oz cloth resin popping off old duct now have light smooth fiberglass duct will outlast helicopter Add bead silicone glue duct meets fuse lage will hold steady can cut need remove Flying Modified Gazelle has taken great deal time effort make im provements Gazelle smooth precise way helicopter flies has made worthwhile Several machines area have modified respective owners having excellent results now some saying dont have machine shop cant make parts parts mentioned shown article avail able through Miniature Aircraft Supply 2563 Diversified Way Orlando FL 32804Phone 305-422-1531 Dealer inquiries invited Wherever have flown Gazelle com ments have same amazed its smoothness precise control will hover hands off wind yet can flown like Ugly Stick Let hear about problems suc cesses Next months column will deal nasty servo pots what about Also super super helicopter finish anyone can Direct correspondence Walt Schoonard 2080 Sharon Road Winter Park FL 32789 pedu cteegewprad uctreviewt red ctre vie wp red uctresiew Challenger II R/C System complete re design original 5 Channel Challenger System Innovations include new semIopen gimbal system CMOS circuitry both transmitter receiver operating time up three hours 5 channels using750 ma battery pack Integral connector plugs receiver trainer system-standard new servos mechanics designed Roy Klett new standard charger LEDS indicate battery charging completely rede signed receiver 7 ma drain Com patible manufactured Competi tion Series standards smooth response reliability Full set options available information contact Pro Line Electronics 10632 N 21st Ave #10 Phoenix Ariz 85029 poductreeewproducteviOwPrOdUCtreViWPrOdUCtreVieW September 1975 69 ETH5Q KNCV AOCIIT RADIO CONTROL FLYINO Unpainted teat Gazelle
Edition: Model Aviation - 1975/09
Page Numbers: 28, 68, 69
Radio Control Bud Atkinson THERE SEEMS something about war bird stirs imagination true regardless what insignia carries 1918 1961 war birds built specified purposeto oppose adversary hope fully out-fly out-bomb out-guess oppo nent Rhinebeck Confederate Air Force other air shows around world dem onstrate love curiosity about fighting air machine point am aiming first-hand inspection detail color markings past birds WW II buffs have missed great opportunity life time havent seen Confederate Air Force fly able inspect touch wonderful birds Im sure inspired scale modeler has seen WW WW II airplane marched home build favorite war bird Im sure case manufacturers Scale Stand-off Scale because have such fine selection subjects problems both WWI WWII aircraft semiflat camouflage paint jobs Much has written subject finishes still camouflaging problem Several years ago presented problem did research subject came up product called Cam-o-sheen added Gazelle Modifications chose Schluter Gazelle chose good helicopter machine end product Schluters helicopter evaluation machine simple set up normally flies first attempt after little time machine comes apparent its present configuration its maneuverability limited some re spects can disastrous have done extensive testing developing mods heli copter can now tell can made quick aerobatic wish Fuselage disastrous things happen helicopter have lacquer enamel dope nitrate butyrate different amounts will give flat dull finish damaging fuel-proof quality material may added clear dope protect flatting detailing decals Just recently KCRC scale friend Fred Hulen has used K & B epoxy paint Nam T-28yes T-28 used Vietnam camouflaged results great So will work K&B epoxy Im sure about other epoxy paint degree flat Walt Schoonard main rotor cut tail boom off tail first hard landing can really destroy machine terribly demoralizing situation get happened several friends After trying longer output shafts shorter blades lots other things too finally discovered what happening found blades could bent down tail cone no matter hard tried clamped Gazelle bench lifted tail cone bent blades down sudden could see what happening fuselage collapsing right under dummy engine nacelle allowing tail come up naturally depends amount Com-o sheen experiment before applying model two sources Cam-o-sheen Ace Radio Control Higgensville Mo KRD Products Kens R/C10915 W 59th Terr Shawnee Kan 66203 can guarantee will obtain scale-like camouflage finish Dont overdo amount flat Most full-scale cam ouflage paint jobs dead flat rather semi-gloss think too fine scale models over flat realistic have badly weathered become dead flat get chance visit Air Force museum Day ton take good look fine examples war birds have display have yet find anything else will give desired sheen want try Cam-o-sheen next camouflage paint job let know like dont intend complete review scale kits column will give run down new Scale Stand-off Scale kits affiliated products such kit Sigs new Stand-off bi plane Steen Skybolt Its fully acrobatic kit shows both scale dual ailerons well non-scale strip aileron would like just sport plane believe Skybolt best proportioned biplanes date good Stand-off copy full-size Skybolt designed RC modeler shows its appearance RC model mind well full-size man-carrying hicontinued page 80 Impossible tell real thing ex citing Jet Ranger Aubrey Radfords head high yo-yo 360-degree circle blades coming downdisaster simple remedy instantly worked out gluing IX ical balsa post top bottom tail cone just aft tail cone beginning cutting Out tail rotor shaftthe tail cone now cannot moved have made tail first landings since have such problems Constant Blade Speed Tail Rotor Mix have never liked percentage throttle col lective type setup machine collec tive pitch Also dont like correct torque effect adding subtracting tail rotor com mands first step solve problem develop servo cam see picture would give essentially full throttle half stick out giving enough collective make ma chine squirm ground After making servo cams fenalic board 3/32 thick care recall finally got what after zero-throttle stick position halfthrottle stick position carb needs opened full required bending throttle arm closer barrel center have faster response shorter distance travel other words half servo travel need get full throttle throttle pushrod properly located servo cam balance servo travel across servo doesnt affect throttle Now opposite side cam must locate collective pushrod very little collective realized half-throttle stick greater degree available last half stick continued page 68 28 Model Aviation Scale Ryan Sts have good proportions RC single-place version Meril Davidson Helicopters * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAFITCH 50/o3 63 732A4 82456 94677 10466W 7 EW 106EW* 114 5W 67 7 7 7 8 116EW 11%67 126 125W0 1256 1456 155 164 *W WIDE BLADE EW EXTRA WIDE ALL NEW SERIES 400 B FOR SPEED & RACING NEW ADVANCED DESIGN TERRIFIC INCREASE IN THRUST 8 SPEED LEADING SPEED RECORD HOLDER 72 73 74 DIAPITCHPRICE 46/, 785 45 5'85 678895 7566N7 1011100 8899N105 8777125 9777 1213125 N NARROW PRICE 75 75 100 100 105 115 120 130 135 135 140 145 165 185 225 275 RC Helicopters continued page 28 movement Now have constant blade speed selective collective disturbing throttle setting setup now demands tail rotor mix because add collective adding torque have no way compensate except tail rotor command precise enough make rapid climbs de scents Y servo connector extra servo trim barr able acquire tailrotor mix automatically use golden rod tail-rotor pushrods mounted left side fuselage mounted tailrotor servo mix servo side side Gazelle rather crowded has worked out really well 40-60 percent mix has worked out almost perfectly mix set up lift-off tail-rotor pitch shaft vertical have full travel tail-rotor command still left tail-rotor pitch setting should start 8 degrees positive lift-off will have vary depending partIc ular blades engine Head Modification Collective Setup have never liked head-tilt rubber grommets furnished kit start wear out rapidly head tilts centers no change resistance AISOr transitional take-off tend let head tilt tilt machine consequently ma neuvering helicopter cause unwanted bunts extreme makes unpredictable control unsightly jerking machine As wearr gets worse problem gave headaches anything else solu tion hard find After long hours building testing different devices give increasing centering pressure head have developed rotor stabilizer solved problem Quite few given Gazelle pilots try comment have reported fantastic smoothness instant control response sceptic loaned entire rotor head blade assembly should have seen ear ear grin soon lifted off Needless say bought head stabilizer spot Now have constant blade speed tailrotor mixr super stable smooth ma chine need blade pitch available manual tells exceed 6 degrees positive pitchwell forget want maneuvers order leap off ground make rapid descents sudden StOPOr have got have lot pitch available machine going get solved making pitch crank transmission out l/ music wire twice throw supplied course meant replacing brass tubing trans mission also /s ID tubing Now need forget what manual says about pitch setup Using pitch gauges symmetrical blades half throttle stick should have 4 degrees positive pitch arm trans mission thats long black left should slightly forward vertical helicopter will fly squirm pitch stabilizer fly-bar should set ting about 1/3 way up bottom hole operates full throttle stick full collective fly-bar should 2/3 way bottom large holes head tilting fly-bar its extreme blade pitch arms should respectively touch top bottom simultaneously have done work right up point should have least 10 degrees pitch setting 68 Model Aviation HIGH PERFORMANCE * COMPETITION PROVEN w -J 4 U Lfl C, 0 Vertical tail cone support Disaster tail cone support ASK yOUR DEALER Gazelle servo layout collective low position Products mentioned text HR VIXEN 2l95 2I/2PATT R R N VIXEN has adoantage beng troall economiOal Solid end operate itsdarearequiringatwo-channel radjOeritli Span3d miniatono teroos small battery pack Kit WoecIgO sq toatores include prenision handlawed sanded wsgtt.sg 00 parts Ace foam wing complete hardware EngineCoo TD 549051 CnntroltAilerOnandelsnato Fo prompt dglitgry tend castriers theck money ordor adding 8155 dripping handling Wisconsin residents add 4% salen tao Sorry no COD orders CONCEPT MODELS Voor Deoler Order Direot fIwwd CuAuttuhotv AIRPLANE SAVING BOOKS EVERYTHING YOU SHOULD KNOW ABOUT RADIO CONTROL FLYING IS FULLY ILLUSTRATED BEGINNERS BOOK EASY-TOUNDERSTAND LEARNING SYSTEM .........5395 THE CRASHLESS WAY ADVANCED RADIO CONTROL ILYIN6 4 4 THE CRASHLESS WAY TO ADVANCED RADIO CONTROL FLYING GIVES YOU FACTS AND INFORMATION TO AVOID FRUSTRATIONS AND HAVE MORE FUN HOW TO FLY UCONTROL BY WELL KNOWN DICK MATHIS IS FULLY ILLUS TRATED BEGINNERS BOOK COVERS EVERYTHING FROM LEARNING TO FLYING STUNTS$295 frorold Cunninqhonla ALMOST CRASH PROOF PREFORMED PLYWOOD CONSTRUCTION FOR 19 TO 25 ENGINESRETAIL PRICE$2995 AT YOUR LOCAL DEALERS OR ORDER DIRECT J4 d/ irnny flIkN MII Boe Tec 76250 Windy Day Fun Flier STORM FIGHTER 8-6 DESIGNED FOR THE R C FLIER THAT USUALLY STAYS HOME WHEN THE WIND IS BLOWING Ssormfighter especially designed fly safely ic high winds Its quick easy haild Its tor Sunday Flyer instructions enclosed conversion slow trainer can take hangups learning Blade HoldersFly-Bar Paddles Traitsmission Support About flOW YOU going begin notice blade holders going take strain also wont keep track setting will change quick torn Blade holders consequently developed will stand anything put through also permit pitch setting Allen wrench 12-mm lead angle has always difficult maintain old blade holders hard head has able dislodge holders blades themselves can shortened much 1 inches increase blade speed also helps quicken Gazelle Make sure entire head fully assembled blades balanced suPporting via flybar fly-bar paddles should have 27 5/16 holes identically drilled lighten paddles speed up cyclic steering ears transmission tend crack break machine becomes responsive development transmission support ties two transmission plates together has elimi nated problem see picture Fiberglass Cooling Shroud have probably frustrated plastic cooling duct supplied kit fatigues cracks nothing seems stop solved coating inside duct mold release laying up couple layers 6 oz cloth resin popping off old duct now have light smooth fiberglass duct will outlast helicopter Add bead silicone glue duct meets fuse lage will hold steady can cut need remove Flying Modified Gazelle has taken great deal time effort make im provements Gazelle smooth precise way helicopter flies has made worthwhile Several machines area have modified respective owners having excellent results now some saying dont have machine shop cant make parts parts mentioned shown article avail able through Miniature Aircraft Supply 2563 Diversified Way Orlando FL 32804Phone 305-422-1531 Dealer inquiries invited Wherever have flown Gazelle com ments have same amazed its smoothness precise control will hover hands off wind yet can flown like Ugly Stick Let hear about problems suc cesses Next months column will deal nasty servo pots what about Also super super helicopter finish anyone can Direct correspondence Walt Schoonard 2080 Sharon Road Winter Park FL 32789 pedu cteegewprad uctreviewt red ctre vie wp red uctresiew Challenger II R/C System complete re design original 5 Channel Challenger System Innovations include new semIopen gimbal system CMOS circuitry both transmitter receiver operating time up three hours 5 channels using750 ma battery pack Integral connector plugs receiver trainer system-standard new servos mechanics designed Roy Klett new standard charger LEDS indicate battery charging completely rede signed receiver 7 ma drain Com patible manufactured Competi tion Series standards smooth response reliability Full set options available information contact Pro Line Electronics 10632 N 21st Ave #10 Phoenix Ariz 85029 poductreeewproducteviOwPrOdUCtreViWPrOdUCtreVieW September 1975 69 ETH5Q KNCV AOCIIT RADIO CONTROL FLYINO Unpainted teat Gazelle
Edition: Model Aviation - 1975/09
Page Numbers: 28, 68, 69
Radio Control Bud Atkinson THERE SEEMS something about war bird stirs imagination true regardless what insignia carries 1918 1961 war birds built specified purposeto oppose adversary hope fully out-fly out-bomb out-guess oppo nent Rhinebeck Confederate Air Force other air shows around world dem onstrate love curiosity about fighting air machine point am aiming first-hand inspection detail color markings past birds WW II buffs have missed great opportunity life time havent seen Confederate Air Force fly able inspect touch wonderful birds Im sure inspired scale modeler has seen WW WW II airplane marched home build favorite war bird Im sure case manufacturers Scale Stand-off Scale because have such fine selection subjects problems both WWI WWII aircraft semiflat camouflage paint jobs Much has written subject finishes still camouflaging problem Several years ago presented problem did research subject came up product called Cam-o-sheen added Gazelle Modifications chose Schluter Gazelle chose good helicopter machine end product Schluters helicopter evaluation machine simple set up normally flies first attempt after little time machine comes apparent its present configuration its maneuverability limited some re spects can disastrous have done extensive testing developing mods heli copter can now tell can made quick aerobatic wish Fuselage disastrous things happen helicopter have lacquer enamel dope nitrate butyrate different amounts will give flat dull finish damaging fuel-proof quality material may added clear dope protect flatting detailing decals Just recently KCRC scale friend Fred Hulen has used K & B epoxy paint Nam T-28yes T-28 used Vietnam camouflaged results great So will work K&B epoxy Im sure about other epoxy paint degree flat Walt Schoonard main rotor cut tail boom off tail first hard landing can really destroy machine terribly demoralizing situation get happened several friends After trying longer output shafts shorter blades lots other things too finally discovered what happening found blades could bent down tail cone no matter hard tried clamped Gazelle bench lifted tail cone bent blades down sudden could see what happening fuselage collapsing right under dummy engine nacelle allowing tail come up naturally depends amount Com-o sheen experiment before applying model two sources Cam-o-sheen Ace Radio Control Higgensville Mo KRD Products Kens R/C10915 W 59th Terr Shawnee Kan 66203 can guarantee will obtain scale-like camouflage finish Dont overdo amount flat Most full-scale cam ouflage paint jobs dead flat rather semi-gloss think too fine scale models over flat realistic have badly weathered become dead flat get chance visit Air Force museum Day ton take good look fine examples war birds have display have yet find anything else will give desired sheen want try Cam-o-sheen next camouflage paint job let know like dont intend complete review scale kits column will give run down new Scale Stand-off Scale kits affiliated products such kit Sigs new Stand-off bi plane Steen Skybolt Its fully acrobatic kit shows both scale dual ailerons well non-scale strip aileron would like just sport plane believe Skybolt best proportioned biplanes date good Stand-off copy full-size Skybolt designed RC modeler shows its appearance RC model mind well full-size man-carrying hicontinued page 80 Impossible tell real thing ex citing Jet Ranger Aubrey Radfords head high yo-yo 360-degree circle blades coming downdisaster simple remedy instantly worked out gluing IX ical balsa post top bottom tail cone just aft tail cone beginning cutting Out tail rotor shaftthe tail cone now cannot moved have made tail first landings since have such problems Constant Blade Speed Tail Rotor Mix have never liked percentage throttle col lective type setup machine collec tive pitch Also dont like correct torque effect adding subtracting tail rotor com mands first step solve problem develop servo cam see picture would give essentially full throttle half stick out giving enough collective make ma chine squirm ground After making servo cams fenalic board 3/32 thick care recall finally got what after zero-throttle stick position halfthrottle stick position carb needs opened full required bending throttle arm closer barrel center have faster response shorter distance travel other words half servo travel need get full throttle throttle pushrod properly located servo cam balance servo travel across servo doesnt affect throttle Now opposite side cam must locate collective pushrod very little collective realized half-throttle stick greater degree available last half stick continued page 68 28 Model Aviation Scale Ryan Sts have good proportions RC single-place version Meril Davidson Helicopters * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAFITCH 50/o3 63 732A4 82456 94677 10466W 7 EW 106EW* 114 5W 67 7 7 7 8 116EW 11%67 126 125W0 1256 1456 155 164 *W WIDE BLADE EW EXTRA WIDE ALL NEW SERIES 400 B FOR SPEED & RACING NEW ADVANCED DESIGN TERRIFIC INCREASE IN THRUST 8 SPEED LEADING SPEED RECORD HOLDER 72 73 74 DIAPITCHPRICE 46/, 785 45 5'85 678895 7566N7 1011100 8899N105 8777125 9777 1213125 N NARROW PRICE 75 75 100 100 105 115 120 130 135 135 140 145 165 185 225 275 RC Helicopters continued page 28 movement Now have constant blade speed selective collective disturbing throttle setting setup now demands tail rotor mix because add collective adding torque have no way compensate except tail rotor command precise enough make rapid climbs de scents Y servo connector extra servo trim barr able acquire tailrotor mix automatically use golden rod tail-rotor pushrods mounted left side fuselage mounted tailrotor servo mix servo side side Gazelle rather crowded has worked out really well 40-60 percent mix has worked out almost perfectly mix set up lift-off tail-rotor pitch shaft vertical have full travel tail-rotor command still left tail-rotor pitch setting should start 8 degrees positive lift-off will have vary depending partIc ular blades engine Head Modification Collective Setup have never liked head-tilt rubber grommets furnished kit start wear out rapidly head tilts centers no change resistance AISOr transitional take-off tend let head tilt tilt machine consequently ma neuvering helicopter cause unwanted bunts extreme makes unpredictable control unsightly jerking machine As wearr gets worse problem gave headaches anything else solu tion hard find After long hours building testing different devices give increasing centering pressure head have developed rotor stabilizer solved problem Quite few given Gazelle pilots try comment have reported fantastic smoothness instant control response sceptic loaned entire rotor head blade assembly should have seen ear ear grin soon lifted off Needless say bought head stabilizer spot Now have constant blade speed tailrotor mixr super stable smooth ma chine need blade pitch available manual tells exceed 6 degrees positive pitchwell forget want maneuvers order leap off ground make rapid descents sudden StOPOr have got have lot pitch available machine going get solved making pitch crank transmission out l/ music wire twice throw supplied course meant replacing brass tubing trans mission also /s ID tubing Now need forget what manual says about pitch setup Using pitch gauges symmetrical blades half throttle stick should have 4 degrees positive pitch arm trans mission thats long black left should slightly forward vertical helicopter will fly squirm pitch stabilizer fly-bar should set ting about 1/3 way up bottom hole operates full throttle stick full collective fly-bar should 2/3 way bottom large holes head tilting fly-bar its extreme blade pitch arms should respectively touch top bottom simultaneously have done work right up point should have least 10 degrees pitch setting 68 Model Aviation HIGH PERFORMANCE * COMPETITION PROVEN w -J 4 U Lfl C, 0 Vertical tail cone support Disaster tail cone support ASK yOUR DEALER Gazelle servo layout collective low position Products mentioned text HR VIXEN 2l95 2I/2PATT R R N VIXEN has adoantage beng troall economiOal Solid end operate itsdarearequiringatwo-channel radjOeritli Span3d miniatono teroos small battery pack Kit WoecIgO sq toatores include prenision handlawed sanded wsgtt.sg 00 parts Ace foam wing complete hardware EngineCoo TD 549051 CnntroltAilerOnandelsnato Fo prompt dglitgry tend castriers theck money ordor adding 8155 dripping handling Wisconsin residents add 4% salen tao Sorry no COD orders CONCEPT MODELS Voor Deoler Order Direot fIwwd CuAuttuhotv AIRPLANE SAVING BOOKS EVERYTHING YOU SHOULD KNOW ABOUT RADIO CONTROL FLYING IS FULLY ILLUSTRATED BEGINNERS BOOK EASY-TOUNDERSTAND LEARNING SYSTEM .........5395 THE CRASHLESS WAY ADVANCED RADIO CONTROL ILYIN6 4 4 THE CRASHLESS WAY TO ADVANCED RADIO CONTROL FLYING GIVES YOU FACTS AND INFORMATION TO AVOID FRUSTRATIONS AND HAVE MORE FUN HOW TO FLY UCONTROL BY WELL KNOWN DICK MATHIS IS FULLY ILLUS TRATED BEGINNERS BOOK COVERS EVERYTHING FROM LEARNING TO FLYING STUNTS$295 frorold Cunninqhonla ALMOST CRASH PROOF PREFORMED PLYWOOD CONSTRUCTION FOR 19 TO 25 ENGINESRETAIL PRICE$2995 AT YOUR LOCAL DEALERS OR ORDER DIRECT J4 d/ irnny flIkN MII Boe Tec 76250 Windy Day Fun Flier STORM FIGHTER 8-6 DESIGNED FOR THE R C FLIER THAT USUALLY STAYS HOME WHEN THE WIND IS BLOWING Ssormfighter especially designed fly safely ic high winds Its quick easy haild Its tor Sunday Flyer instructions enclosed conversion slow trainer can take hangups learning Blade HoldersFly-Bar Paddles Traitsmission Support About flOW YOU going begin notice blade holders going take strain also wont keep track setting will change quick torn Blade holders consequently developed will stand anything put through also permit pitch setting Allen wrench 12-mm lead angle has always difficult maintain old blade holders hard head has able dislodge holders blades themselves can shortened much 1 inches increase blade speed also helps quicken Gazelle Make sure entire head fully assembled blades balanced suPporting via flybar fly-bar paddles should have 27 5/16 holes identically drilled lighten paddles speed up cyclic steering ears transmission tend crack break machine becomes responsive development transmission support ties two transmission plates together has elimi nated problem see picture Fiberglass Cooling Shroud have probably frustrated plastic cooling duct supplied kit fatigues cracks nothing seems stop solved coating inside duct mold release laying up couple layers 6 oz cloth resin popping off old duct now have light smooth fiberglass duct will outlast helicopter Add bead silicone glue duct meets fuse lage will hold steady can cut need remove Flying Modified Gazelle has taken great deal time effort make im provements Gazelle smooth precise way helicopter flies has made worthwhile Several machines area have modified respective owners having excellent results now some saying dont have machine shop cant make parts parts mentioned shown article avail able through Miniature Aircraft Supply 2563 Diversified Way Orlando FL 32804Phone 305-422-1531 Dealer inquiries invited Wherever have flown Gazelle com ments have same amazed its smoothness precise control will hover hands off wind yet can flown like Ugly Stick Let hear about problems suc cesses Next months column will deal nasty servo pots what about Also super super helicopter finish anyone can Direct correspondence Walt Schoonard 2080 Sharon Road Winter Park FL 32789 pedu cteegewprad uctreviewt red ctre vie wp red uctresiew Challenger II R/C System complete re design original 5 Channel Challenger System Innovations include new semIopen gimbal system CMOS circuitry both transmitter receiver operating time up three hours 5 channels using750 ma battery pack Integral connector plugs receiver trainer system-standard new servos mechanics designed Roy Klett new standard charger LEDS indicate battery charging completely rede signed receiver 7 ma drain Com patible manufactured Competi tion Series standards smooth response reliability Full set options available information contact Pro Line Electronics 10632 N 21st Ave #10 Phoenix Ariz 85029 poductreeewproducteviOwPrOdUCtreViWPrOdUCtreVieW September 1975 69 ETH5Q KNCV AOCIIT RADIO CONTROL FLYINO Unpainted teat Gazelle