Radio Control Helicopters. Dave Chesney LAST MONTH said acrobatic hel icopters dominated classes 1978 AMA NATS As ex-pattern flier very excited about capabilities acrobatic machines frankly until Nats convinced machine capable aerobatic maneuvers beast hover opportunity hover Walt Schoon ards HeliBoy loop roll John Gorhams HeliBoy enough con vince although control response quick degree stability well control input response time immediate because response time initial effort hover Walts ma chine almost led damaged tail rotor related parts second attempt much better went away confidence began As noted above quite ap prehensive about flying aerobatic hel icopter particularly true rigid rotor flybarless machines such Rev olution II RR story behind ap prehension primarily claim being ace helicopter pilot during attempts learning hover first RC helicopter managed hit five automobiles Since Nats have begun flying Revolution II Rigid Rotor What learned about own capabilities helicopter took surprise real surprise solid feel during hover very unlike comments earlier magazine articles read re garding other rigid-rotor flybarless hel icopters helicopter extremely Continued page 103 26 Model Aviation Revolution II rigid rotor sulfur ouring rirst rHignI pnoto taken tast shUtter speed stop main rotor show absence fly bar Rotor speed lift-off approximately 1450 rpm Below servicing removal 10 screws gains access radio compartment Author found set-up per instructions did reauire removal canoov additmnnnl RfIHtnrnnt Len 1-ront view shows servos linkages mixer Servo functions L R tail rotor fore aft cyclic left right cyclic collective low pltcn throttle forward collective servo Black box above tank servo reverser circuitry Note connections receiver servos taped Right Revolution II detail showing radio box doubling instrument console Seat background has 1/2 balsa spacer added rear provide clearance mixer cut Out slip over radio box console fillets around bulkheads new Pettit product welcome works Ron Van Puue 12 Connie Drive Shalimar FL 32579 RC Helicopters/Chesney continued page 26 quick respond control inputs unlike Hiller systems am familiar As turned out quickness abso lute control welcome change hurry up wait Hiller system difference control response ad vantage between rigid rotor flybarless helicopter primarily because direct inputs swash plate rotor blade Hiller systems must rely stabilizing flybar servo main rotors other words swash plate acts upon flybar turn powers main rotor pitch change mechanism absence flybar servo paddles cans also disadvantage because servo power must come directly radio systems servo addition force multiplying ef fect flybar paddles flybar also responsible much stability rotor system acting gyro scope flybarless helicopter blades weighted allow spinning rotor system act also gyroscope stabilize machine possible put much weight blade control inputs rotors will have affect upon altitude helicop ter Too little weight blades will result very little gyroscopic effect machine could become almost impos sible control folks American R/C Helicopter have found best com promise Revolution II Rigid Rotor caution against changing amount location rotor tip weights Another type rotor system use combination system allowing direct input rotor blades well input through flybar rotor believe re ferred BelIer system BelIer system used Kavan Jet Ranger HeliBoy Revolution Commander light helicopter such HeliBoy Revolution Com mander Beller system offers aerobatic performance plus additional stability power provided flybar back Revolution II RR Revolution II shown photos began its career standard Revolu tion II Fixed Pitch Kit Rigid Rotor flybarless system added conver sion kit Since Revolution earlier kits some drilling neces sary install modification Later Revolutions supplied holes factory drilled will simplify stallation modifications available availability modification kits standard Revolution II offers heli copter can grow proficiency grows addition flybarless Rigid Rotor GRISH IS BIGGER propellers Ways BEST Grish designs propellers. others copy Sizes pitches styles needs LARGE WOOD SIZES 7 18 modification kit new Commander aerobatic head kit has also re leased Soon hope new flybarless four bladed head will also available Commander head four-bladed system may added existing Revolution II Rigid Rotor simply removing fly barless head installing new head associated swash plate pitch arm linkage same could apply Com mander helicopter just change rotor heads would necessary convert flybarless two- four-blade systems addition rotor systems now available Revolution II Jet Ranger fuselage available may added Revolution fixed pitch heli HARDWOOD. too hard minimizes chances costly plane engine damage True pitch airfoil fully carved Craftsman adds own final copter Revolution Commander Revolution II Rigid Rotor Revolution II regardless initial configuration offers tremendous degree flexibility its owner As noted above paragraphs Revolution II Rigid Rotor result Rigid Rotor modification kit kit added very little deviation instructions photos show de tails particular radio installation except modification seat console related placement receiver battery pack per stallation instructions provided modification kit machine arrived first flight addition 4 oz nose December1978 103 RISH RGE WOOD PROPELLERS touches ISH BROS ST JOHN GRINDIANA 46373 diameters 6810 pItch] / weight required plus usual blade track ing pitch adjustments necessary new machine preparing first flight Revolution II Rigid Rotor similar machine word advicedo give cyclic control machine until off ground Unlike teetering head type helicopters cyclic control just point lift off absolute im mediateto give command would invite tip-over After familiarity control re sponse gained same quickness response will offer advantages both hover forward flight ma chine capable recovery almost flight attitude primary limiting factor being pilots ability recognize necessary control inputs recovery have found Revolution II Rigid Rotor difficult control dif ferent anything have previously flown last caution regarding aero batic helicopters appears aerobatics easily accomplished precision hovering maneuvers remind yourself heli copter flights begin end hover dont neglect hover practice Other developments relative aerobatic helicopters concerning radio equip ment almost four-channel propositional radio can used teresting note least two radio manufacturers advertising radios options specifically helicopter fliers Westpost International Milford CT offers Custom Variant elec tronic mix within transmitter throt tle collective tail rotor channels well dual rotes cyclic controls Custom Variant available both single dual stick configurations SLK Elec tronics Greensboro NC markets OMEGA system also offers throttle collective tail rotor mix well non-linear control flight functions non-linear function similar benefit dual rates will interesting see intro duction special helicopter radios will spur kind controversy among interest group Super Radios did among pattern fliers Well thats about month Next month Ill talk again about beginner techniques report about local ginners attempts learning fly Mean drop line regarding subjects would like see covered column Dave Chesney Rt 9 Box 621A Greensboro NC 27409 CL World Champs/Jackson continued page 37 two sauntered off murmuring something about next time F2C Team Race event US hasnt scored well several years have honest contender championship since Herb Stock ton discovered RC boats things werent change 78 ray sunshine Henry Nelsons engine virtually dominated semifinal finishers knew quick times would predominate watched low 4-minute times required semifinal berth probably under 4 minutes make final Nobody ex pected ante stiff 359 semifinal spot 352 finals thats first round heats fast company Dodge Nelson up early against Wakker man/Weerd Holland Henry lit up fairly quick first tank seemed reasonably fast cut-off bit wild Carl thrilled crowd swooping dive pits Henry deftly speared Pelican short hop stylish catch As throng gasped appropriately calmly lit off second tank Carl motored away Alas brief moment glory repeated during meeting time 4031 fast enough top Wakkermans 424 knew precarious matched expected times Sure enough British soon gan tear up 4-minute rule Clarkson/Woodside recorded 3534 almost flawless pitting Heaton/ Ross returned 354 trail slight ly Smith/Brown completed British attack 3586 used Nelson engines add insult injury Hutton Oddy Julius Reichart Australia zipped off 3563 Nel son Metkemeyer brothers Hol land retired Nelson engine meeting trotted out own FMV Flores-Metkemeyer-Visser engine motor confidently 3495 top first round Albritton/Joy quick start US slight ly overcooked setting 4044 park right behind Dodge/Nelson 11th place Jolly/Kusik showed lack practice difficulties set tings down list 4393 Most top teams done expected exception two Danish teams Geschwendt ner twins neither running Round two saw few changes Some significant Nelson tried new starting technique dry en gine failed impress onlookers tried recoup loss second circus catch flounder slipped away did time team got 420 Jolly/Kusik im proved 4153 Albritton/Joy did So US again out semi final berth British decided rest laurels Clarkson went far play airplane center circle light comic relief except Fontana kept getting leg chewed prop didnt help time British failed im provebut didnt have Semifinals berths shuffled little Perrachi/Cipolla made under 4minute wire using Cipolla engine 3594 Hans Visser turned 3591 partner Eep Buys using Nelson Hans Geschwendtner piloted John Mau calmly lit off one-stopper Nelson record 3497 Theo Georgiadis stayed legal long enough him Dennis Prior Australia rip off 3487 high time heats again Nelson engine semis first heat matched Georgiadis/Prior Smith/Brown Geschwendtner/Mau Theo Dennis took 3535 Hans John Mau trailing 3562 Smitty Colin Brown bringing up rear 4016 Aussies looked good finals berth Next heat saw Derek Heaton Mal com Ross narrowly beat Oddy/Reichart 355 3556 Visser/Buys tucked close 3574 best final heat first semi round saw Metkies blow away 3 44 flat new competition record Per rachi/Cipolia DQedand Clarkson/ Woodside nowhere 4016no 401 final round semis squeezed everybody top little tighter Heat preview final Metkemeyers went against Heaton/Ross Geschwendtner/Mau Metkies skidded Geschwendtner/Mau came 3499 meetings fifth sub-350 time Heaton/Ross skipped third finals berth 3529 Heat two produced sub-4 time Peracchi/Cipolla turned 3593 Heat three saw Oddy/Reichart take hard charge finals spot just fall short 3534 satisfaction being team record un broken string four sub-4-minute times moment silence departed Team Race engine builder Paul Bugl pre ceded final race finals have recently letdown 104 Model Aviation *SCALE CLASICS Plans & Construction Manual CURTISS HAWK POE STINSONRELIANT SRO Scala 94aSpan 220V Scala 126 Span62500 2Scala 63 Span 12602Scala 84 Span61500 1/a Scala 47VdSpan 10801Scala 63 Span120 CURTISS GOSHAWI Filca 2 Scala 63 SpanS1590 CURTISS GULFHAWK lA . 2Scal 63 Span SISOd Scala 94Ii Span S3050 PlacaS Add 6180 Pa 0da ta Pcsaaa Handling. Odlalda US Add 8300Make PaynaH Richard G Barron1213 Hal ly Sping Ln 0and Blanc MIchIgan 48439 S0d SIOClO C00P6t8 10f0natlO
Edition: Model Aviation - 1978/12
Page Numbers: 26, 103, 104
Radio Control Helicopters. Dave Chesney LAST MONTH said acrobatic hel icopters dominated classes 1978 AMA NATS As ex-pattern flier very excited about capabilities acrobatic machines frankly until Nats convinced machine capable aerobatic maneuvers beast hover opportunity hover Walt Schoon ards HeliBoy loop roll John Gorhams HeliBoy enough con vince although control response quick degree stability well control input response time immediate because response time initial effort hover Walts ma chine almost led damaged tail rotor related parts second attempt much better went away confidence began As noted above quite ap prehensive about flying aerobatic hel icopter particularly true rigid rotor flybarless machines such Rev olution II RR story behind ap prehension primarily claim being ace helicopter pilot during attempts learning hover first RC helicopter managed hit five automobiles Since Nats have begun flying Revolution II Rigid Rotor What learned about own capabilities helicopter took surprise real surprise solid feel during hover very unlike comments earlier magazine articles read re garding other rigid-rotor flybarless hel icopters helicopter extremely Continued page 103 26 Model Aviation Revolution II rigid rotor sulfur ouring rirst rHignI pnoto taken tast shUtter speed stop main rotor show absence fly bar Rotor speed lift-off approximately 1450 rpm Below servicing removal 10 screws gains access radio compartment Author found set-up per instructions did reauire removal canoov additmnnnl RfIHtnrnnt Len 1-ront view shows servos linkages mixer Servo functions L R tail rotor fore aft cyclic left right cyclic collective low pltcn throttle forward collective servo Black box above tank servo reverser circuitry Note connections receiver servos taped Right Revolution II detail showing radio box doubling instrument console Seat background has 1/2 balsa spacer added rear provide clearance mixer cut Out slip over radio box console fillets around bulkheads new Pettit product welcome works Ron Van Puue 12 Connie Drive Shalimar FL 32579 RC Helicopters/Chesney continued page 26 quick respond control inputs unlike Hiller systems am familiar As turned out quickness abso lute control welcome change hurry up wait Hiller system difference control response ad vantage between rigid rotor flybarless helicopter primarily because direct inputs swash plate rotor blade Hiller systems must rely stabilizing flybar servo main rotors other words swash plate acts upon flybar turn powers main rotor pitch change mechanism absence flybar servo paddles cans also disadvantage because servo power must come directly radio systems servo addition force multiplying ef fect flybar paddles flybar also responsible much stability rotor system acting gyro scope flybarless helicopter blades weighted allow spinning rotor system act also gyroscope stabilize machine possible put much weight blade control inputs rotors will have affect upon altitude helicop ter Too little weight blades will result very little gyroscopic effect machine could become almost impos sible control folks American R/C Helicopter have found best com promise Revolution II Rigid Rotor caution against changing amount location rotor tip weights Another type rotor system use combination system allowing direct input rotor blades well input through flybar rotor believe re ferred BelIer system BelIer system used Kavan Jet Ranger HeliBoy Revolution Commander light helicopter such HeliBoy Revolution Com mander Beller system offers aerobatic performance plus additional stability power provided flybar back Revolution II RR Revolution II shown photos began its career standard Revolu tion II Fixed Pitch Kit Rigid Rotor flybarless system added conver sion kit Since Revolution earlier kits some drilling neces sary install modification Later Revolutions supplied holes factory drilled will simplify stallation modifications available availability modification kits standard Revolution II offers heli copter can grow proficiency grows addition flybarless Rigid Rotor GRISH IS BIGGER propellers Ways BEST Grish designs propellers. others copy Sizes pitches styles needs LARGE WOOD SIZES 7 18 modification kit new Commander aerobatic head kit has also re leased Soon hope new flybarless four bladed head will also available Commander head four-bladed system may added existing Revolution II Rigid Rotor simply removing fly barless head installing new head associated swash plate pitch arm linkage same could apply Com mander helicopter just change rotor heads would necessary convert flybarless two- four-blade systems addition rotor systems now available Revolution II Jet Ranger fuselage available may added Revolution fixed pitch heli HARDWOOD. too hard minimizes chances costly plane engine damage True pitch airfoil fully carved Craftsman adds own final copter Revolution Commander Revolution II Rigid Rotor Revolution II regardless initial configuration offers tremendous degree flexibility its owner As noted above paragraphs Revolution II Rigid Rotor result Rigid Rotor modification kit kit added very little deviation instructions photos show de tails particular radio installation except modification seat console related placement receiver battery pack per stallation instructions provided modification kit machine arrived first flight addition 4 oz nose December1978 103 RISH RGE WOOD PROPELLERS touches ISH BROS ST JOHN GRINDIANA 46373 diameters 6810 pItch] / weight required plus usual blade track ing pitch adjustments necessary new machine preparing first flight Revolution II Rigid Rotor similar machine word advicedo give cyclic control machine until off ground Unlike teetering head type helicopters cyclic control just point lift off absolute im mediateto give command would invite tip-over After familiarity control re sponse gained same quickness response will offer advantages both hover forward flight ma chine capable recovery almost flight attitude primary limiting factor being pilots ability recognize necessary control inputs recovery have found Revolution II Rigid Rotor difficult control dif ferent anything have previously flown last caution regarding aero batic helicopters appears aerobatics easily accomplished precision hovering maneuvers remind yourself heli copter flights begin end hover dont neglect hover practice Other developments relative aerobatic helicopters concerning radio equip ment almost four-channel propositional radio can used teresting note least two radio manufacturers advertising radios options specifically helicopter fliers Westpost International Milford CT offers Custom Variant elec tronic mix within transmitter throt tle collective tail rotor channels well dual rotes cyclic controls Custom Variant available both single dual stick configurations SLK Elec tronics Greensboro NC markets OMEGA system also offers throttle collective tail rotor mix well non-linear control flight functions non-linear function similar benefit dual rates will interesting see intro duction special helicopter radios will spur kind controversy among interest group Super Radios did among pattern fliers Well thats about month Next month Ill talk again about beginner techniques report about local ginners attempts learning fly Mean drop line regarding subjects would like see covered column Dave Chesney Rt 9 Box 621A Greensboro NC 27409 CL World Champs/Jackson continued page 37 two sauntered off murmuring something about next time F2C Team Race event US hasnt scored well several years have honest contender championship since Herb Stock ton discovered RC boats things werent change 78 ray sunshine Henry Nelsons engine virtually dominated semifinal finishers knew quick times would predominate watched low 4-minute times required semifinal berth probably under 4 minutes make final Nobody ex pected ante stiff 359 semifinal spot 352 finals thats first round heats fast company Dodge Nelson up early against Wakker man/Weerd Holland Henry lit up fairly quick first tank seemed reasonably fast cut-off bit wild Carl thrilled crowd swooping dive pits Henry deftly speared Pelican short hop stylish catch As throng gasped appropriately calmly lit off second tank Carl motored away Alas brief moment glory repeated during meeting time 4031 fast enough top Wakkermans 424 knew precarious matched expected times Sure enough British soon gan tear up 4-minute rule Clarkson/Woodside recorded 3534 almost flawless pitting Heaton/ Ross returned 354 trail slight ly Smith/Brown completed British attack 3586 used Nelson engines add insult injury Hutton Oddy Julius Reichart Australia zipped off 3563 Nel son Metkemeyer brothers Hol land retired Nelson engine meeting trotted out own FMV Flores-Metkemeyer-Visser engine motor confidently 3495 top first round Albritton/Joy quick start US slight ly overcooked setting 4044 park right behind Dodge/Nelson 11th place Jolly/Kusik showed lack practice difficulties set tings down list 4393 Most top teams done expected exception two Danish teams Geschwendt ner twins neither running Round two saw few changes Some significant Nelson tried new starting technique dry en gine failed impress onlookers tried recoup loss second circus catch flounder slipped away did time team got 420 Jolly/Kusik im proved 4153 Albritton/Joy did So US again out semi final berth British decided rest laurels Clarkson went far play airplane center circle light comic relief except Fontana kept getting leg chewed prop didnt help time British failed im provebut didnt have Semifinals berths shuffled little Perrachi/Cipolla made under 4minute wire using Cipolla engine 3594 Hans Visser turned 3591 partner Eep Buys using Nelson Hans Geschwendtner piloted John Mau calmly lit off one-stopper Nelson record 3497 Theo Georgiadis stayed legal long enough him Dennis Prior Australia rip off 3487 high time heats again Nelson engine semis first heat matched Georgiadis/Prior Smith/Brown Geschwendtner/Mau Theo Dennis took 3535 Hans John Mau trailing 3562 Smitty Colin Brown bringing up rear 4016 Aussies looked good finals berth Next heat saw Derek Heaton Mal com Ross narrowly beat Oddy/Reichart 355 3556 Visser/Buys tucked close 3574 best final heat first semi round saw Metkies blow away 3 44 flat new competition record Per rachi/Cipolia DQedand Clarkson/ Woodside nowhere 4016no 401 final round semis squeezed everybody top little tighter Heat preview final Metkemeyers went against Heaton/Ross Geschwendtner/Mau Metkies skidded Geschwendtner/Mau came 3499 meetings fifth sub-350 time Heaton/Ross skipped third finals berth 3529 Heat two produced sub-4 time Peracchi/Cipolla turned 3593 Heat three saw Oddy/Reichart take hard charge finals spot just fall short 3534 satisfaction being team record un broken string four sub-4-minute times moment silence departed Team Race engine builder Paul Bugl pre ceded final race finals have recently letdown 104 Model Aviation *SCALE CLASICS Plans & Construction Manual CURTISS HAWK POE STINSONRELIANT SRO Scala 94aSpan 220V Scala 126 Span62500 2Scala 63 Span 12602Scala 84 Span61500 1/a Scala 47VdSpan 10801Scala 63 Span120 CURTISS GOSHAWI Filca 2 Scala 63 SpanS1590 CURTISS GULFHAWK lA . 2Scal 63 Span SISOd Scala 94Ii Span S3050 PlacaS Add 6180 Pa 0da ta Pcsaaa Handling. Odlalda US Add 8300Make PaynaH Richard G Barron1213 Hal ly Sping Ln 0and Blanc MIchIgan 48439 S0d SIOClO C00P6t8 10f0natlO
Edition: Model Aviation - 1978/12
Page Numbers: 26, 103, 104
Radio Control Helicopters. Dave Chesney LAST MONTH said acrobatic hel icopters dominated classes 1978 AMA NATS As ex-pattern flier very excited about capabilities acrobatic machines frankly until Nats convinced machine capable aerobatic maneuvers beast hover opportunity hover Walt Schoon ards HeliBoy loop roll John Gorhams HeliBoy enough con vince although control response quick degree stability well control input response time immediate because response time initial effort hover Walts ma chine almost led damaged tail rotor related parts second attempt much better went away confidence began As noted above quite ap prehensive about flying aerobatic hel icopter particularly true rigid rotor flybarless machines such Rev olution II RR story behind ap prehension primarily claim being ace helicopter pilot during attempts learning hover first RC helicopter managed hit five automobiles Since Nats have begun flying Revolution II Rigid Rotor What learned about own capabilities helicopter took surprise real surprise solid feel during hover very unlike comments earlier magazine articles read re garding other rigid-rotor flybarless hel icopters helicopter extremely Continued page 103 26 Model Aviation Revolution II rigid rotor sulfur ouring rirst rHignI pnoto taken tast shUtter speed stop main rotor show absence fly bar Rotor speed lift-off approximately 1450 rpm Below servicing removal 10 screws gains access radio compartment Author found set-up per instructions did reauire removal canoov additmnnnl RfIHtnrnnt Len 1-ront view shows servos linkages mixer Servo functions L R tail rotor fore aft cyclic left right cyclic collective low pltcn throttle forward collective servo Black box above tank servo reverser circuitry Note connections receiver servos taped Right Revolution II detail showing radio box doubling instrument console Seat background has 1/2 balsa spacer added rear provide clearance mixer cut Out slip over radio box console fillets around bulkheads new Pettit product welcome works Ron Van Puue 12 Connie Drive Shalimar FL 32579 RC Helicopters/Chesney continued page 26 quick respond control inputs unlike Hiller systems am familiar As turned out quickness abso lute control welcome change hurry up wait Hiller system difference control response ad vantage between rigid rotor flybarless helicopter primarily because direct inputs swash plate rotor blade Hiller systems must rely stabilizing flybar servo main rotors other words swash plate acts upon flybar turn powers main rotor pitch change mechanism absence flybar servo paddles cans also disadvantage because servo power must come directly radio systems servo addition force multiplying ef fect flybar paddles flybar also responsible much stability rotor system acting gyro scope flybarless helicopter blades weighted allow spinning rotor system act also gyroscope stabilize machine possible put much weight blade control inputs rotors will have affect upon altitude helicop ter Too little weight blades will result very little gyroscopic effect machine could become almost impos sible control folks American R/C Helicopter have found best com promise Revolution II Rigid Rotor caution against changing amount location rotor tip weights Another type rotor system use combination system allowing direct input rotor blades well input through flybar rotor believe re ferred BelIer system BelIer system used Kavan Jet Ranger HeliBoy Revolution Commander light helicopter such HeliBoy Revolution Com mander Beller system offers aerobatic performance plus additional stability power provided flybar back Revolution II RR Revolution II shown photos began its career standard Revolu tion II Fixed Pitch Kit Rigid Rotor flybarless system added conver sion kit Since Revolution earlier kits some drilling neces sary install modification Later Revolutions supplied holes factory drilled will simplify stallation modifications available availability modification kits standard Revolution II offers heli copter can grow proficiency grows addition flybarless Rigid Rotor GRISH IS BIGGER propellers Ways BEST Grish designs propellers. others copy Sizes pitches styles needs LARGE WOOD SIZES 7 18 modification kit new Commander aerobatic head kit has also re leased Soon hope new flybarless four bladed head will also available Commander head four-bladed system may added existing Revolution II Rigid Rotor simply removing fly barless head installing new head associated swash plate pitch arm linkage same could apply Com mander helicopter just change rotor heads would necessary convert flybarless two- four-blade systems addition rotor systems now available Revolution II Jet Ranger fuselage available may added Revolution fixed pitch heli HARDWOOD. too hard minimizes chances costly plane engine damage True pitch airfoil fully carved Craftsman adds own final copter Revolution Commander Revolution II Rigid Rotor Revolution II regardless initial configuration offers tremendous degree flexibility its owner As noted above paragraphs Revolution II Rigid Rotor result Rigid Rotor modification kit kit added very little deviation instructions photos show de tails particular radio installation except modification seat console related placement receiver battery pack per stallation instructions provided modification kit machine arrived first flight addition 4 oz nose December1978 103 RISH RGE WOOD PROPELLERS touches ISH BROS ST JOHN GRINDIANA 46373 diameters 6810 pItch] / weight required plus usual blade track ing pitch adjustments necessary new machine preparing first flight Revolution II Rigid Rotor similar machine word advicedo give cyclic control machine until off ground Unlike teetering head type helicopters cyclic control just point lift off absolute im mediateto give command would invite tip-over After familiarity control re sponse gained same quickness response will offer advantages both hover forward flight ma chine capable recovery almost flight attitude primary limiting factor being pilots ability recognize necessary control inputs recovery have found Revolution II Rigid Rotor difficult control dif ferent anything have previously flown last caution regarding aero batic helicopters appears aerobatics easily accomplished precision hovering maneuvers remind yourself heli copter flights begin end hover dont neglect hover practice Other developments relative aerobatic helicopters concerning radio equip ment almost four-channel propositional radio can used teresting note least two radio manufacturers advertising radios options specifically helicopter fliers Westpost International Milford CT offers Custom Variant elec tronic mix within transmitter throt tle collective tail rotor channels well dual rotes cyclic controls Custom Variant available both single dual stick configurations SLK Elec tronics Greensboro NC markets OMEGA system also offers throttle collective tail rotor mix well non-linear control flight functions non-linear function similar benefit dual rates will interesting see intro duction special helicopter radios will spur kind controversy among interest group Super Radios did among pattern fliers Well thats about month Next month Ill talk again about beginner techniques report about local ginners attempts learning fly Mean drop line regarding subjects would like see covered column Dave Chesney Rt 9 Box 621A Greensboro NC 27409 CL World Champs/Jackson continued page 37 two sauntered off murmuring something about next time F2C Team Race event US hasnt scored well several years have honest contender championship since Herb Stock ton discovered RC boats things werent change 78 ray sunshine Henry Nelsons engine virtually dominated semifinal finishers knew quick times would predominate watched low 4-minute times required semifinal berth probably under 4 minutes make final Nobody ex pected ante stiff 359 semifinal spot 352 finals thats first round heats fast company Dodge Nelson up early against Wakker man/Weerd Holland Henry lit up fairly quick first tank seemed reasonably fast cut-off bit wild Carl thrilled crowd swooping dive pits Henry deftly speared Pelican short hop stylish catch As throng gasped appropriately calmly lit off second tank Carl motored away Alas brief moment glory repeated during meeting time 4031 fast enough top Wakkermans 424 knew precarious matched expected times Sure enough British soon gan tear up 4-minute rule Clarkson/Woodside recorded 3534 almost flawless pitting Heaton/ Ross returned 354 trail slight ly Smith/Brown completed British attack 3586 used Nelson engines add insult injury Hutton Oddy Julius Reichart Australia zipped off 3563 Nel son Metkemeyer brothers Hol land retired Nelson engine meeting trotted out own FMV Flores-Metkemeyer-Visser engine motor confidently 3495 top first round Albritton/Joy quick start US slight ly overcooked setting 4044 park right behind Dodge/Nelson 11th place Jolly/Kusik showed lack practice difficulties set tings down list 4393 Most top teams done expected exception two Danish teams Geschwendt ner twins neither running Round two saw few changes Some significant Nelson tried new starting technique dry en gine failed impress onlookers tried recoup loss second circus catch flounder slipped away did time team got 420 Jolly/Kusik im proved 4153 Albritton/Joy did So US again out semi final berth British decided rest laurels Clarkson went far play airplane center circle light comic relief except Fontana kept getting leg chewed prop didnt help time British failed im provebut didnt have Semifinals berths shuffled little Perrachi/Cipolla made under 4minute wire using Cipolla engine 3594 Hans Visser turned 3591 partner Eep Buys using Nelson Hans Geschwendtner piloted John Mau calmly lit off one-stopper Nelson record 3497 Theo Georgiadis stayed legal long enough him Dennis Prior Australia rip off 3487 high time heats again Nelson engine semis first heat matched Georgiadis/Prior Smith/Brown Geschwendtner/Mau Theo Dennis took 3535 Hans John Mau trailing 3562 Smitty Colin Brown bringing up rear 4016 Aussies looked good finals berth Next heat saw Derek Heaton Mal com Ross narrowly beat Oddy/Reichart 355 3556 Visser/Buys tucked close 3574 best final heat first semi round saw Metkies blow away 3 44 flat new competition record Per rachi/Cipolia DQedand Clarkson/ Woodside nowhere 4016no 401 final round semis squeezed everybody top little tighter Heat preview final Metkemeyers went against Heaton/Ross Geschwendtner/Mau Metkies skidded Geschwendtner/Mau came 3499 meetings fifth sub-350 time Heaton/Ross skipped third finals berth 3529 Heat two produced sub-4 time Peracchi/Cipolla turned 3593 Heat three saw Oddy/Reichart take hard charge finals spot just fall short 3534 satisfaction being team record un broken string four sub-4-minute times moment silence departed Team Race engine builder Paul Bugl pre ceded final race finals have recently letdown 104 Model Aviation *SCALE CLASICS Plans & Construction Manual CURTISS HAWK POE STINSONRELIANT SRO Scala 94aSpan 220V Scala 126 Span62500 2Scala 63 Span 12602Scala 84 Span61500 1/a Scala 47VdSpan 10801Scala 63 Span120 CURTISS GOSHAWI Filca 2 Scala 63 SpanS1590 CURTISS GULFHAWK lA . 2Scal 63 Span SISOd Scala 94Ii Span S3050 PlacaS Add 6180 Pa 0da ta Pcsaaa Handling. Odlalda US Add 8300Make PaynaH Richard G Barron1213 Hal ly Sping Ln 0and Blanc MIchIgan 48439 S0d SIOClO C00P6t8 10f0natlO