Control Helicopters Dave Chesney THIS MONTH helicopter looks like might have designed Space 1999 Star Trek TV show Doug Law Baldwinsville NY lets us impressions Horizon Helicopter photographs Dougs Horizon work Bill Shumay Dougs letter Dear Dave thought readers might interested some information Horizon Helicopter As readers may know machine designed Hubert Bitner Helmut Holder Texas kit has anticipated couple years impression now production very impressed Horizon 1980 Nationals purchased kit shortly thereafter Horizon Model Crafts 3625 E Lookwood Houston TX 77026 kit exceptional quality Most metal parts clear anodized think process giving soft satin finish alumi num Having heard radio problems because insulating quality anodizing checked completed machine ohmmeter found parts no matter remotely located electrically connected machinery parts excellent quality fitted supposed nice thing parts including hardware standard American sizes instructions include sections construction Continued page 112 Horizon helicopter built flown Doug Law Baidwinaville NY Top picture reveals classy futuristic lines new machine See thing looks like thin extension left landing skid lea plastic tube housing radio antenna Blunt end fuselage pod actually open end cooling fan shroud dark-looking protuberance belowthe tell boom near tailakid aft end tuned pipe muffler engine shroud adds illusion full fuselage scale-like appearance photo left above shows right side Horizon shroud removed Thats HB 61 helicopter engine power note stock heatsink cylinder head Stub prop cooling fan Note toothed-belt drive tuned pipe installatIon mini-spinner direct-starter engagement Photo right above reveals spacious provision AC installation three servos uppertray control main rotor cyclic tail rotor pitch white servo lower down moves trayto provide collective pitch tail rotor mix fifth servo throttle Photo left below depicts flybarless rigid rotor head Simple sturdy Swashplate attaches cyclic linkage four pointsminimizes slop Photo right below shows tail rotor control linkage speedometercable drive Flexible drive eliminates usual gearing allows graceful upaweep boomkeeps tail rotor Out grass allows araceful Hollvwoodstvle landina flare ohotos Bill Shumwav 38 Model Aviation fiGTfldO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor 5-3each 6-45 354ScSizes pitches 63 64USc 7476 78Kgstyles 848-6 8SUe 949-69-7 98104106Kgneeds 114116118 *1 12412-512-6*180 2 Blade PusheAT YOUR DEALER 5446-36-4SOc 8-6Sc 9-610-6*1 3 Blade Tractor 5-36-364 USc 3 Blade Pushe 6-3 Metallic Aluminum Color Tractor 1678i 8688*13 96 106104*160 Pusher106*180 locations panel lines stringers Dimensions utmost importance will used checking scale rule must furnished contestant taking dimensions drawing AMA contests rule should graduated inches modeler makes team will need new rule metric graduations use World Championships Photographic evidence authenticity should arranged booklet orderly manner beginning photos complete plane including subdivisions fuselage wing tail surfaces landing gear engine cowl cockpit cabin finish color markings color paint chips best Color photos can used too often misleading AMA rule book does limit quantity photos FAI specifies three maximum above items Most important dont GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BOREALL SIZES IN18 57 6 8 & 10 PITCH 20 8 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 RIGHT HAND TRACTOR RUSH BROS 6ST JOHN INDIANA 46373 use photos showing details omitted model Keep mind judges will show preference photo rather drawing outlines plane photos drawing dont agree mark drawing corrections Sport Scale 10-minute time limit flight Precision no limit Precision has five extra mandatory maneuvers proto taxi traffic pattern approach landing landing per fection spot landing proto taxi hanger addition two extra options Except spot landing very demanding pilot agreed designing building flying Scale model aircraft easy Accumulation documentation adds burden spite Scale brings great personal satisfaction excitement winning place team ranks highlight modeling experience regular communications AMA HQ about com ing trip foreign land actual travel seeing firsthand models other nations meeting modelers competition lasting memories Expense contestant need great funds cover transportation entry fees meals lodging meet well some additional cash team fund derived sale patches donations case Dolly pays own way wives some other contestants think trip adventure chance see some world has very rewarding experience know deserving model ers could become team members minimum additional effort Documentation source letter Richard Burkett informs us drawing source Cartographic Division National Archives has microfilm complete construction blue prints airplane US government has ever owned anyone wants use service should call write first drawings still classified PBY Catalina example have approximately 20 films over 100 frames film cost per print 10t 11-in x 17-in size 25t 18-in x 24-in National Archives Cartographic Division 7th Constitution NW Washington DC 20408 Bob Dolly Wiseher Rt 1 S-22lLapham Peak Road Delafield WI 53018 RC Helicopters/Chesney Continued page 38 setup preflight checking problem solving fact What check after mishap included 60-sized collectivepitch machine Horizon amazingly simple Several clever construction setup proce dures employed including pitch gauge made say wish thought Total time spent construction setup about 20 hours Although Horizon frame tube machine inclusion side cowling pleasing front body sub-fin main fin make machine stand out very stylish bit futuristic-looking Horizon flybarless machine main rotor diameter 53 operating approximately 1575 rpm main blades require approximately one-and-a-half ounces weight tip compensate lack flybar weights go slot milled back side hardwood leading edge balsa trailing edge place weights entirely enclosed Properly installed method insures no chance weights coming out tail rotor blades made wood rather plastic probably provide lower inertia force ball bearings used Horizon double shielded Thrust bearings well double ball bearings used blade holders engine mounts horizontally facing rearwards connected clutch through drive belt three-blade fan used pull air through side cowling engine cooling method cooling has proven very effective fuel tank mounted cowling opposite engine located center gravity well center carburetor tail rotor driven speedometer-type cable such way require gears eliminates considerable friction well parts system necessary disengage tail rotor system autorotations 112 Model Aviation 3 F NEW FROM TYRO MODE LS~I BA 1930 EDGEWOOD DR. PO BOX 11511 PALO ALTO CA q43OR IA1l RR-77R1 Collective control produced sliding swashplate held four points linkages go both sides cyclic servos producing very firm swashplate mini mum feedback servos Only two linkages required swashplate head direct blade control head itself extremely simple rugged easy setup Heavy plastic used side cowling front body canopy Lexan sub-fin fin made balsa plywood front body designed break away impact minimum damageit works used HB 61 PDP helicopter engine tuned pipe Horizon engine runs well easy adjust provides excellent power am sure pipe actually adds much neat-looking gets rid of oil radio equipment includes World Engines seven-channel receiver EMS 151 IH ser vos use Ace Silver Seven transmitter have modified concurrent use both exponential mixing throttle T/R well external reversing two functions throttle stick inverted flight machine weighs 11 pounds ready fly fuel could probably reduced about 10 pounds tuned pipe considerable nose weight required pipe used came time fly Horizon bit apprehensive have flying Helicopters year heard mixed stories about flybarless machines Having learned flown Heliboy also concerned about Horizon would compare per formance sweet After minor trim adjustments Horizon lifted very steady hover thing immediately impressed complete lack vibration Cyclic TLC RIC PRODUCTS Rt 1 Box 282 Prospect VA 23901 Fine Quality Flying MedIs Catalog 8150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 control inputs responded immediately giving very solid feeling Tail rotor control very positive both directions tail rotor mix very close being correct collective response made wonder machine really weighs 11 pounds now time some flying little forward stick away went An engine flameout 25 feet proved durability machine After rearranging skids fired up engine put several flights noticeable difference between flybarless machine good flybar machine like Heliboy accentuated upward pitching forward flight took number flights become accustomed toand compensate characteristic Horizon capable very precise flying well having full aerobatic capabilities control setup very easy can anywhere mild wild last few weeks have modified Horizon inverted flight Yes inverted have hands full have managed several extended periods inverted flight need work out couple minor details practice practice practice sum up opinion Horizon would say combination simplicity durabili ty styling precision control makes well suited flier desires quality performance thoroughly enjoy Horizon feel will take prominent position Helicopter community anyone thinking about high-performance collective machine certainly recommend investigate Horizon Continued Sincerely Doug Law Solareraft presents 2 new fun flyers Solar Dart 12 rubber powered helicopter climbs over 250 $300 postage paid ready fly Solar Scamp 12 high performance free flying stick model $400 postage paid ready fly Send check money order Solareraft PO Box 6825 Santa Barbara CA 93111 Dealer inquiries invited May1981 113 5#EtItIUAItON Wing Span485 Overall Length33 Wing Chnrd70 Mm Req Wgt178 cc Wing Area 318 nq Engine Sice 0 Price $2895 gt yosr Hobby Dealer ordering direct please add $250 forfreight handling &insgrance California residento add 6% Sales Tan Manafactared Tyro Models Designed Flyll still Avail $4885 PLAYBOY SENIOR 183 trerglrt & handirnal Fast realistic aerobatic kit features ABS wheelpants moulded canopy pre-bent wire Send $2500 plus $500 shipping rL%17r ~df44 $79 95* Four Folding Legs Wing El Fuselage Holders Add $400 Shipping- calif 6% Tax RAC Products406 274-1915 32D0 Knightswood Way 0 San J058 CA 95146
Edition: Model Aviation - 1981/05
Page Numbers: 38, 112, 113
Control Helicopters Dave Chesney THIS MONTH helicopter looks like might have designed Space 1999 Star Trek TV show Doug Law Baldwinsville NY lets us impressions Horizon Helicopter photographs Dougs Horizon work Bill Shumay Dougs letter Dear Dave thought readers might interested some information Horizon Helicopter As readers may know machine designed Hubert Bitner Helmut Holder Texas kit has anticipated couple years impression now production very impressed Horizon 1980 Nationals purchased kit shortly thereafter Horizon Model Crafts 3625 E Lookwood Houston TX 77026 kit exceptional quality Most metal parts clear anodized think process giving soft satin finish alumi num Having heard radio problems because insulating quality anodizing checked completed machine ohmmeter found parts no matter remotely located electrically connected machinery parts excellent quality fitted supposed nice thing parts including hardware standard American sizes instructions include sections construction Continued page 112 Horizon helicopter built flown Doug Law Baidwinaville NY Top picture reveals classy futuristic lines new machine See thing looks like thin extension left landing skid lea plastic tube housing radio antenna Blunt end fuselage pod actually open end cooling fan shroud dark-looking protuberance belowthe tell boom near tailakid aft end tuned pipe muffler engine shroud adds illusion full fuselage scale-like appearance photo left above shows right side Horizon shroud removed Thats HB 61 helicopter engine power note stock heatsink cylinder head Stub prop cooling fan Note toothed-belt drive tuned pipe installatIon mini-spinner direct-starter engagement Photo right above reveals spacious provision AC installation three servos uppertray control main rotor cyclic tail rotor pitch white servo lower down moves trayto provide collective pitch tail rotor mix fifth servo throttle Photo left below depicts flybarless rigid rotor head Simple sturdy Swashplate attaches cyclic linkage four pointsminimizes slop Photo right below shows tail rotor control linkage speedometercable drive Flexible drive eliminates usual gearing allows graceful upaweep boomkeeps tail rotor Out grass allows araceful Hollvwoodstvle landina flare ohotos Bill Shumwav 38 Model Aviation fiGTfldO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor 5-3each 6-45 354ScSizes pitches 63 64USc 7476 78Kgstyles 848-6 8SUe 949-69-7 98104106Kgneeds 114116118 *1 12412-512-6*180 2 Blade PusheAT YOUR DEALER 5446-36-4SOc 8-6Sc 9-610-6*1 3 Blade Tractor 5-36-364 USc 3 Blade Pushe 6-3 Metallic Aluminum Color Tractor 1678i 8688*13 96 106104*160 Pusher106*180 locations panel lines stringers Dimensions utmost importance will used checking scale rule must furnished contestant taking dimensions drawing AMA contests rule should graduated inches modeler makes team will need new rule metric graduations use World Championships Photographic evidence authenticity should arranged booklet orderly manner beginning photos complete plane including subdivisions fuselage wing tail surfaces landing gear engine cowl cockpit cabin finish color markings color paint chips best Color photos can used too often misleading AMA rule book does limit quantity photos FAI specifies three maximum above items Most important dont GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BOREALL SIZES IN18 57 6 8 & 10 PITCH 20 8 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 RIGHT HAND TRACTOR RUSH BROS 6ST JOHN INDIANA 46373 use photos showing details omitted model Keep mind judges will show preference photo rather drawing outlines plane photos drawing dont agree mark drawing corrections Sport Scale 10-minute time limit flight Precision no limit Precision has five extra mandatory maneuvers proto taxi traffic pattern approach landing landing per fection spot landing proto taxi hanger addition two extra options Except spot landing very demanding pilot agreed designing building flying Scale model aircraft easy Accumulation documentation adds burden spite Scale brings great personal satisfaction excitement winning place team ranks highlight modeling experience regular communications AMA HQ about com ing trip foreign land actual travel seeing firsthand models other nations meeting modelers competition lasting memories Expense contestant need great funds cover transportation entry fees meals lodging meet well some additional cash team fund derived sale patches donations case Dolly pays own way wives some other contestants think trip adventure chance see some world has very rewarding experience know deserving model ers could become team members minimum additional effort Documentation source letter Richard Burkett informs us drawing source Cartographic Division National Archives has microfilm complete construction blue prints airplane US government has ever owned anyone wants use service should call write first drawings still classified PBY Catalina example have approximately 20 films over 100 frames film cost per print 10t 11-in x 17-in size 25t 18-in x 24-in National Archives Cartographic Division 7th Constitution NW Washington DC 20408 Bob Dolly Wiseher Rt 1 S-22lLapham Peak Road Delafield WI 53018 RC Helicopters/Chesney Continued page 38 setup preflight checking problem solving fact What check after mishap included 60-sized collectivepitch machine Horizon amazingly simple Several clever construction setup proce dures employed including pitch gauge made say wish thought Total time spent construction setup about 20 hours Although Horizon frame tube machine inclusion side cowling pleasing front body sub-fin main fin make machine stand out very stylish bit futuristic-looking Horizon flybarless machine main rotor diameter 53 operating approximately 1575 rpm main blades require approximately one-and-a-half ounces weight tip compensate lack flybar weights go slot milled back side hardwood leading edge balsa trailing edge place weights entirely enclosed Properly installed method insures no chance weights coming out tail rotor blades made wood rather plastic probably provide lower inertia force ball bearings used Horizon double shielded Thrust bearings well double ball bearings used blade holders engine mounts horizontally facing rearwards connected clutch through drive belt three-blade fan used pull air through side cowling engine cooling method cooling has proven very effective fuel tank mounted cowling opposite engine located center gravity well center carburetor tail rotor driven speedometer-type cable such way require gears eliminates considerable friction well parts system necessary disengage tail rotor system autorotations 112 Model Aviation 3 F NEW FROM TYRO MODE LS~I BA 1930 EDGEWOOD DR. PO BOX 11511 PALO ALTO CA q43OR IA1l RR-77R1 Collective control produced sliding swashplate held four points linkages go both sides cyclic servos producing very firm swashplate mini mum feedback servos Only two linkages required swashplate head direct blade control head itself extremely simple rugged easy setup Heavy plastic used side cowling front body canopy Lexan sub-fin fin made balsa plywood front body designed break away impact minimum damageit works used HB 61 PDP helicopter engine tuned pipe Horizon engine runs well easy adjust provides excellent power am sure pipe actually adds much neat-looking gets rid of oil radio equipment includes World Engines seven-channel receiver EMS 151 IH ser vos use Ace Silver Seven transmitter have modified concurrent use both exponential mixing throttle T/R well external reversing two functions throttle stick inverted flight machine weighs 11 pounds ready fly fuel could probably reduced about 10 pounds tuned pipe considerable nose weight required pipe used came time fly Horizon bit apprehensive have flying Helicopters year heard mixed stories about flybarless machines Having learned flown Heliboy also concerned about Horizon would compare per formance sweet After minor trim adjustments Horizon lifted very steady hover thing immediately impressed complete lack vibration Cyclic TLC RIC PRODUCTS Rt 1 Box 282 Prospect VA 23901 Fine Quality Flying MedIs Catalog 8150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 control inputs responded immediately giving very solid feeling Tail rotor control very positive both directions tail rotor mix very close being correct collective response made wonder machine really weighs 11 pounds now time some flying little forward stick away went An engine flameout 25 feet proved durability machine After rearranging skids fired up engine put several flights noticeable difference between flybarless machine good flybar machine like Heliboy accentuated upward pitching forward flight took number flights become accustomed toand compensate characteristic Horizon capable very precise flying well having full aerobatic capabilities control setup very easy can anywhere mild wild last few weeks have modified Horizon inverted flight Yes inverted have hands full have managed several extended periods inverted flight need work out couple minor details practice practice practice sum up opinion Horizon would say combination simplicity durabili ty styling precision control makes well suited flier desires quality performance thoroughly enjoy Horizon feel will take prominent position Helicopter community anyone thinking about high-performance collective machine certainly recommend investigate Horizon Continued Sincerely Doug Law Solareraft presents 2 new fun flyers Solar Dart 12 rubber powered helicopter climbs over 250 $300 postage paid ready fly Solar Scamp 12 high performance free flying stick model $400 postage paid ready fly Send check money order Solareraft PO Box 6825 Santa Barbara CA 93111 Dealer inquiries invited May1981 113 5#EtItIUAItON Wing Span485 Overall Length33 Wing Chnrd70 Mm Req Wgt178 cc Wing Area 318 nq Engine Sice 0 Price $2895 gt yosr Hobby Dealer ordering direct please add $250 forfreight handling &insgrance California residento add 6% Sales Tan Manafactared Tyro Models Designed Flyll still Avail $4885 PLAYBOY SENIOR 183 trerglrt & handirnal Fast realistic aerobatic kit features ABS wheelpants moulded canopy pre-bent wire Send $2500 plus $500 shipping rL%17r ~df44 $79 95* Four Folding Legs Wing El Fuselage Holders Add $400 Shipping- calif 6% Tax RAC Products406 274-1915 32D0 Knightswood Way 0 San J058 CA 95146
Edition: Model Aviation - 1981/05
Page Numbers: 38, 112, 113
Control Helicopters Dave Chesney THIS MONTH helicopter looks like might have designed Space 1999 Star Trek TV show Doug Law Baldwinsville NY lets us impressions Horizon Helicopter photographs Dougs Horizon work Bill Shumay Dougs letter Dear Dave thought readers might interested some information Horizon Helicopter As readers may know machine designed Hubert Bitner Helmut Holder Texas kit has anticipated couple years impression now production very impressed Horizon 1980 Nationals purchased kit shortly thereafter Horizon Model Crafts 3625 E Lookwood Houston TX 77026 kit exceptional quality Most metal parts clear anodized think process giving soft satin finish alumi num Having heard radio problems because insulating quality anodizing checked completed machine ohmmeter found parts no matter remotely located electrically connected machinery parts excellent quality fitted supposed nice thing parts including hardware standard American sizes instructions include sections construction Continued page 112 Horizon helicopter built flown Doug Law Baidwinaville NY Top picture reveals classy futuristic lines new machine See thing looks like thin extension left landing skid lea plastic tube housing radio antenna Blunt end fuselage pod actually open end cooling fan shroud dark-looking protuberance belowthe tell boom near tailakid aft end tuned pipe muffler engine shroud adds illusion full fuselage scale-like appearance photo left above shows right side Horizon shroud removed Thats HB 61 helicopter engine power note stock heatsink cylinder head Stub prop cooling fan Note toothed-belt drive tuned pipe installatIon mini-spinner direct-starter engagement Photo right above reveals spacious provision AC installation three servos uppertray control main rotor cyclic tail rotor pitch white servo lower down moves trayto provide collective pitch tail rotor mix fifth servo throttle Photo left below depicts flybarless rigid rotor head Simple sturdy Swashplate attaches cyclic linkage four pointsminimizes slop Photo right below shows tail rotor control linkage speedometercable drive Flexible drive eliminates usual gearing allows graceful upaweep boomkeeps tail rotor Out grass allows araceful Hollvwoodstvle landina flare ohotos Bill Shumwav 38 Model Aviation fiGTfldO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor 5-3each 6-45 354ScSizes pitches 63 64USc 7476 78Kgstyles 848-6 8SUe 949-69-7 98104106Kgneeds 114116118 *1 12412-512-6*180 2 Blade PusheAT YOUR DEALER 5446-36-4SOc 8-6Sc 9-610-6*1 3 Blade Tractor 5-36-364 USc 3 Blade Pushe 6-3 Metallic Aluminum Color Tractor 1678i 8688*13 96 106104*160 Pusher106*180 locations panel lines stringers Dimensions utmost importance will used checking scale rule must furnished contestant taking dimensions drawing AMA contests rule should graduated inches modeler makes team will need new rule metric graduations use World Championships Photographic evidence authenticity should arranged booklet orderly manner beginning photos complete plane including subdivisions fuselage wing tail surfaces landing gear engine cowl cockpit cabin finish color markings color paint chips best Color photos can used too often misleading AMA rule book does limit quantity photos FAI specifies three maximum above items Most important dont GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BOREALL SIZES IN18 57 6 8 & 10 PITCH 20 8 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 RIGHT HAND TRACTOR RUSH BROS 6ST JOHN INDIANA 46373 use photos showing details omitted model Keep mind judges will show preference photo rather drawing outlines plane photos drawing dont agree mark drawing corrections Sport Scale 10-minute time limit flight Precision no limit Precision has five extra mandatory maneuvers proto taxi traffic pattern approach landing landing per fection spot landing proto taxi hanger addition two extra options Except spot landing very demanding pilot agreed designing building flying Scale model aircraft easy Accumulation documentation adds burden spite Scale brings great personal satisfaction excitement winning place team ranks highlight modeling experience regular communications AMA HQ about com ing trip foreign land actual travel seeing firsthand models other nations meeting modelers competition lasting memories Expense contestant need great funds cover transportation entry fees meals lodging meet well some additional cash team fund derived sale patches donations case Dolly pays own way wives some other contestants think trip adventure chance see some world has very rewarding experience know deserving model ers could become team members minimum additional effort Documentation source letter Richard Burkett informs us drawing source Cartographic Division National Archives has microfilm complete construction blue prints airplane US government has ever owned anyone wants use service should call write first drawings still classified PBY Catalina example have approximately 20 films over 100 frames film cost per print 10t 11-in x 17-in size 25t 18-in x 24-in National Archives Cartographic Division 7th Constitution NW Washington DC 20408 Bob Dolly Wiseher Rt 1 S-22lLapham Peak Road Delafield WI 53018 RC Helicopters/Chesney Continued page 38 setup preflight checking problem solving fact What check after mishap included 60-sized collectivepitch machine Horizon amazingly simple Several clever construction setup proce dures employed including pitch gauge made say wish thought Total time spent construction setup about 20 hours Although Horizon frame tube machine inclusion side cowling pleasing front body sub-fin main fin make machine stand out very stylish bit futuristic-looking Horizon flybarless machine main rotor diameter 53 operating approximately 1575 rpm main blades require approximately one-and-a-half ounces weight tip compensate lack flybar weights go slot milled back side hardwood leading edge balsa trailing edge place weights entirely enclosed Properly installed method insures no chance weights coming out tail rotor blades made wood rather plastic probably provide lower inertia force ball bearings used Horizon double shielded Thrust bearings well double ball bearings used blade holders engine mounts horizontally facing rearwards connected clutch through drive belt three-blade fan used pull air through side cowling engine cooling method cooling has proven very effective fuel tank mounted cowling opposite engine located center gravity well center carburetor tail rotor driven speedometer-type cable such way require gears eliminates considerable friction well parts system necessary disengage tail rotor system autorotations 112 Model Aviation 3 F NEW FROM TYRO MODE LS~I BA 1930 EDGEWOOD DR. PO BOX 11511 PALO ALTO CA q43OR IA1l RR-77R1 Collective control produced sliding swashplate held four points linkages go both sides cyclic servos producing very firm swashplate mini mum feedback servos Only two linkages required swashplate head direct blade control head itself extremely simple rugged easy setup Heavy plastic used side cowling front body canopy Lexan sub-fin fin made balsa plywood front body designed break away impact minimum damageit works used HB 61 PDP helicopter engine tuned pipe Horizon engine runs well easy adjust provides excellent power am sure pipe actually adds much neat-looking gets rid of oil radio equipment includes World Engines seven-channel receiver EMS 151 IH ser vos use Ace Silver Seven transmitter have modified concurrent use both exponential mixing throttle T/R well external reversing two functions throttle stick inverted flight machine weighs 11 pounds ready fly fuel could probably reduced about 10 pounds tuned pipe considerable nose weight required pipe used came time fly Horizon bit apprehensive have flying Helicopters year heard mixed stories about flybarless machines Having learned flown Heliboy also concerned about Horizon would compare per formance sweet After minor trim adjustments Horizon lifted very steady hover thing immediately impressed complete lack vibration Cyclic TLC RIC PRODUCTS Rt 1 Box 282 Prospect VA 23901 Fine Quality Flying MedIs Catalog 8150 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books * MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 control inputs responded immediately giving very solid feeling Tail rotor control very positive both directions tail rotor mix very close being correct collective response made wonder machine really weighs 11 pounds now time some flying little forward stick away went An engine flameout 25 feet proved durability machine After rearranging skids fired up engine put several flights noticeable difference between flybarless machine good flybar machine like Heliboy accentuated upward pitching forward flight took number flights become accustomed toand compensate characteristic Horizon capable very precise flying well having full aerobatic capabilities control setup very easy can anywhere mild wild last few weeks have modified Horizon inverted flight Yes inverted have hands full have managed several extended periods inverted flight need work out couple minor details practice practice practice sum up opinion Horizon would say combination simplicity durabili ty styling precision control makes well suited flier desires quality performance thoroughly enjoy Horizon feel will take prominent position Helicopter community anyone thinking about high-performance collective machine certainly recommend investigate Horizon Continued Sincerely Doug Law Solareraft presents 2 new fun flyers Solar Dart 12 rubber powered helicopter climbs over 250 $300 postage paid ready fly Solar Scamp 12 high performance free flying stick model $400 postage paid ready fly Send check money order Solareraft PO Box 6825 Santa Barbara CA 93111 Dealer inquiries invited May1981 113 5#EtItIUAItON Wing Span485 Overall Length33 Wing Chnrd70 Mm Req Wgt178 cc Wing Area 318 nq Engine Sice 0 Price $2895 gt yosr Hobby Dealer ordering direct please add $250 forfreight handling &insgrance California residento add 6% Sales Tan Manafactared Tyro Models Designed Flyll still Avail $4885 PLAYBOY SENIOR 183 trerglrt & handirnal Fast realistic aerobatic kit features ABS wheelpants moulded canopy pre-bent wire Send $2500 plus $500 shipping rL%17r ~df44 $79 95* Four Folding Legs Wing El Fuselage Holders Add $400 Shipping- calif 6% Tax RAC Products406 274-1915 32D0 Knightswood Way 0 San J058 CA 95146