IVE always thought pretty good flying weather North Caro lina least until year Weve just wrapped up 14 weeks lousy weekend weather Im writing June column Im looking forward flying new American R/C Commander hel icopter getting cold wet process first reported about Command er after seeing prototype 1978 Nats Commanders like weather have changed considerably since production Commander retains rugged Revolution II frame work adds components neces sary change fixed-pitch Revolu tion II collective-pitch aerobatic helicopter addition recent modification kit Com manders have autorotation potential Since basic Revolution II configura tion retained modification existing Revolution II Revolution II Rigid Rotor helicopters fairly simple oper ation although simple may have led believe December column modification Rigid Ro tor Commander will require dif ferent rear bulkhead radio installa tion Modification fixed-pitch Revolution II will necessarily re quire new bulkhead radio installa tion because radio installation al identical Command er Both Revolution II Rigid Rotor fixed-pitch Revolution will require addition replacement several components perhaps addition two holes drilled side frames accept collective toggle Later Revo lution II helicopters will shipped holes factory-drilled accept collective-pitch toggle assembly added components replaced main gear spacer washer main rotor shaft M/R shaft bearings swash plate course complete rotor head modification kit includes components instructions necessary convert existing Revolution II available factory Ill es timate modification may com pleted under four hours have chosen Commander first RC helicopter kit follow ing notes regarding construction may help kit included 14 pages structions construction set up flying plus 57 photographs supplement ing written instructions photo graphs did reproduce well lacked details intended written instructions very descriptive need photos minimaL American R/C remaking photos later Commander kits instructions numbered written check list Id rec ommend read thoroughly fore beginning construction may wish deviate did following notes Ill refer con struction steps name page num ber applicable frame-up basic helicopter goes very quickly After completing first six steps regarding construction fuselage skids page before installing engine Id rec ommend cutting out fitting former cabin canopy much easier handle lightweight frame work near-completed helicop ter see photos skip page six re garding former cabin canopy Cut out former following diecut outlines Follow instructions pages six seven regarding fitting cabin canopy complete check off steps regard ing servo positioning drilling pushrod holes resining former form er tank hole cut can tached temporarily basic frame cabin canopy cut fitted per factory instructions Dremel tool abrasive wheel works great cutting epoxy-glass cabin would like close fit between fuel tank former shown photos mixture 5-minute epoxy micro-balloons can fill gaps used Gas Model Products SixMinute Epoxy K&B micro-balloons mixed putty consistency Masking tape may used along edges fuselage fuel tank cut-out protect metal finish fuel tank rubber stopper installed set former cut-out against fuselage frames Mix epoxy micro-bal American Fl/C Commander Heli ball muffler available plan MoUnts tabricalsa bY autnor Tar U Max OUl~Ii engineKit mounts ror 61 Boy ran Daves line vision forced him hit ground before finishing exotic test stagemay make comments later 34 Model Aviation Parts package autorotation moditication kit Expert rotor blades shown kit avail able American fits new Commander loons fill gaps around tank Once epoxy sets tank can squeezed break slight bond removed former Remove former fuselage sand epoxy flush front rear former result should fuel tank cut-out no gaps through fuel dirt may later enter radio compartment Now once former cabin canopy fitted removed well return page continue construction per Americans instructions Care should taken during swash-plate assembly page four Avoid over-tightening 2-56x1 screw Also confirm screw will terfere swash-plate uniball swash-plate tilted ex tremes 2-56x1 screw will probably need cut off about 1116 inch Also page four regarding Continued page 110 June1979 35 Left Completed former servos installed View right side showing routing right/left cyclic pushrod tail rotor pushrod tube se cured nylon guides Guides drilledout strip aileron horns Daves leftovers box Right Throttle/collective installation shown per Americans recommendation see text Note additional detail tank cutout suppose experts like Dave would modify new carl Left Forward siderouting collective/throttle pushrods Left clutch housing collective-pitch spinner assembly Dave turned down OD spinner clearance see text Right recommends preliminary fitting rear former cabin canopy before installing engine/clutch assembly Note close-fit tanksee text Notch may made frame clear tank bubble ompietea rolor-neau instaiwimun snowing rouing us oonrol rods swash plate cyclic servo motor flybar swash plate cyclic/collective mixer collective yoke cyclic/collective mixer Collective pitch via rod along slotted main shaft rotor models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA lective pushrod connections servo shown per Americans instruc tions made piggy-back servo arm standard arm two bushings discarded Robart servo two 2-56 screws nuts throttle pushrod top arm collective beneath may follow similar installation follow Americans instruc tions main rotor blade assembly notes regarding trimming blades length may misleading beginner trim blades length instruc tions call trimming root end ap proximately 1/16 measuring ex actly 21 root end blade achieve blades equal length Id recommend after cutting 1/16 off root ends closest end mounting holes blades fastened together blade top other using two 4-40x1 screws nuts through mounting holes cut 21 mark measured root top blade both blades cut together com mon reference being attachment points sure glass 4 roots blade per instructions didnt encounter problems rotor-head construction lead-lag ad justment coning-angle adjustment covered pages 8 9 10 tighten 5-40x1 bolt head must teeter limited dampener tubing during adjustment coning angle finally helicopter flown Install radio equipment liking reference instructions page 10 Radio Pushrod stallation through remainder factorys instructions notes check lists excellent American R/C really impressed detail re garding pushrod installation pre flight set-up Before first flight Com mander required two packages Pra ther Products Stick-On Weights 12 oz nose balance helicopter recommended Center Gravity Adding much weight disap pointing probably due choice light weight airborne battery pack location airborne sys tem used Ace R/C Digital Com mander receiver converted negative pulse four Pro-Line PLS-l 2 servos complete airborne system easily installed under seat Am erican R/C recommends battery pack installed forward seat couldnt resist hiding Hovering Commander should present particular problems Like helicopter similar aerobatic capabilities control response immedi ate first flights winds gust ing 20 knots machine behaved quite well tail rotor mixer date have flown Commander fast forward flight done aerobatics Im sure capable As mentioned earlier Command er may fitted autorotation device see photo modification kit consists basically replacement ny lon gear uni-directional bearing replacement bearing block has relieved accept addition one-way bearing gear ltest Commander fuselage side plates have drilled factory ac cept modification retro-fit standard Commander main ro tor blades must also replaced included model kit use autorotation device allows main rotor windmill event engine failure planned engine shut-down Since tail rotor drive via direct belt drive engine turning during autorotation main rotor pilot has control cy clic main rotor collective pitch tail rotor no longer necessary anti-torque function anyway autorotation device neat sys tem ability autorotate likely immedintely benefit rank beginner since beginners practice should altitude blade inertia alone will get helicop ter ground minimal damage advanced helicopter fliers wanting autorotation capability may de sire modification potential saving helicopter crashes due engine failure just provide new maneuver practice cer tainly degree skill necessary properly perform autorotation down soft landing device has proven itself re cent Tangerine several Ameri can R/C Helicopter Team demonstrated successful engine-out landings alti tudes 75 300 feet look forward trying autorotations soon will comment further time Gone flying Commander See next month Tbe AMA Nats arent far off folks scan Competition Newsletter section latest April issue Model viat ion has preliminaries late entry fee year $5000 Dave Chesney Rt 9 Box 621A Greensboro NC 27409 RC Aerobatics/Van Putte continued page 36 giving him troubleand other expert can con helping will answer question think Dick has great idea am willing give try Just case receptive Dick included two problems Ill give first shot month 10-6 9 7 Nashville Slow 8- 8 Gillopt 8 8 Regular 8-7 Regular 7 6 7 55 KELLY PROPS Winningest Fiberglas Graphite Propellers U S Nationals $650 Rat $650 $500 $475 $475 $375 Graphite $500 6% 5% Willoughby $375 Graphite $500 6 7/8 52 Anderson Ballard Latest Version Mk-3 $375 Graphite $500 7 4 FAI Combat Prop $375 Team Race Props DRAZEK NOVA JOHN GRAY Fiber $375 Graphite $500 ODDY ONE BLADE PROP W/out Counter Balence Fiber $400 Graphite $500 ORDER DIRECT 72 hour shipping cashiers checks money orders 10-day personal checks Money promptly refunded prop stock See Winston-Salem KELLY PRODUCTS NC P0 BOX 38 WESTERN SPRINGS IL 60558 June1979 111
Edition: Model Aviation - 1979/06
Page Numbers: 34, 35, 110, 111
IVE always thought pretty good flying weather North Caro lina least until year Weve just wrapped up 14 weeks lousy weekend weather Im writing June column Im looking forward flying new American R/C Commander hel icopter getting cold wet process first reported about Command er after seeing prototype 1978 Nats Commanders like weather have changed considerably since production Commander retains rugged Revolution II frame work adds components neces sary change fixed-pitch Revolu tion II collective-pitch aerobatic helicopter addition recent modification kit Com manders have autorotation potential Since basic Revolution II configura tion retained modification existing Revolution II Revolution II Rigid Rotor helicopters fairly simple oper ation although simple may have led believe December column modification Rigid Ro tor Commander will require dif ferent rear bulkhead radio installa tion Modification fixed-pitch Revolution II will necessarily re quire new bulkhead radio installa tion because radio installation al identical Command er Both Revolution II Rigid Rotor fixed-pitch Revolution will require addition replacement several components perhaps addition two holes drilled side frames accept collective toggle Later Revo lution II helicopters will shipped holes factory-drilled accept collective-pitch toggle assembly added components replaced main gear spacer washer main rotor shaft M/R shaft bearings swash plate course complete rotor head modification kit includes components instructions necessary convert existing Revolution II available factory Ill es timate modification may com pleted under four hours have chosen Commander first RC helicopter kit follow ing notes regarding construction may help kit included 14 pages structions construction set up flying plus 57 photographs supplement ing written instructions photo graphs did reproduce well lacked details intended written instructions very descriptive need photos minimaL American R/C remaking photos later Commander kits instructions numbered written check list Id rec ommend read thoroughly fore beginning construction may wish deviate did following notes Ill refer con struction steps name page num ber applicable frame-up basic helicopter goes very quickly After completing first six steps regarding construction fuselage skids page before installing engine Id rec ommend cutting out fitting former cabin canopy much easier handle lightweight frame work near-completed helicop ter see photos skip page six re garding former cabin canopy Cut out former following diecut outlines Follow instructions pages six seven regarding fitting cabin canopy complete check off steps regard ing servo positioning drilling pushrod holes resining former form er tank hole cut can tached temporarily basic frame cabin canopy cut fitted per factory instructions Dremel tool abrasive wheel works great cutting epoxy-glass cabin would like close fit between fuel tank former shown photos mixture 5-minute epoxy micro-balloons can fill gaps used Gas Model Products SixMinute Epoxy K&B micro-balloons mixed putty consistency Masking tape may used along edges fuselage fuel tank cut-out protect metal finish fuel tank rubber stopper installed set former cut-out against fuselage frames Mix epoxy micro-bal American Fl/C Commander Heli ball muffler available plan MoUnts tabricalsa bY autnor Tar U Max OUl~Ii engineKit mounts ror 61 Boy ran Daves line vision forced him hit ground before finishing exotic test stagemay make comments later 34 Model Aviation Parts package autorotation moditication kit Expert rotor blades shown kit avail able American fits new Commander loons fill gaps around tank Once epoxy sets tank can squeezed break slight bond removed former Remove former fuselage sand epoxy flush front rear former result should fuel tank cut-out no gaps through fuel dirt may later enter radio compartment Now once former cabin canopy fitted removed well return page continue construction per Americans instructions Care should taken during swash-plate assembly page four Avoid over-tightening 2-56x1 screw Also confirm screw will terfere swash-plate uniball swash-plate tilted ex tremes 2-56x1 screw will probably need cut off about 1116 inch Also page four regarding Continued page 110 June1979 35 Left Completed former servos installed View right side showing routing right/left cyclic pushrod tail rotor pushrod tube se cured nylon guides Guides drilledout strip aileron horns Daves leftovers box Right Throttle/collective installation shown per Americans recommendation see text Note additional detail tank cutout suppose experts like Dave would modify new carl Left Forward siderouting collective/throttle pushrods Left clutch housing collective-pitch spinner assembly Dave turned down OD spinner clearance see text Right recommends preliminary fitting rear former cabin canopy before installing engine/clutch assembly Note close-fit tanksee text Notch may made frame clear tank bubble ompietea rolor-neau instaiwimun snowing rouing us oonrol rods swash plate cyclic servo motor flybar swash plate cyclic/collective mixer collective yoke cyclic/collective mixer Collective pitch via rod along slotted main shaft rotor models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA lective pushrod connections servo shown per Americans instruc tions made piggy-back servo arm standard arm two bushings discarded Robart servo two 2-56 screws nuts throttle pushrod top arm collective beneath may follow similar installation follow Americans instruc tions main rotor blade assembly notes regarding trimming blades length may misleading beginner trim blades length instruc tions call trimming root end ap proximately 1/16 measuring ex actly 21 root end blade achieve blades equal length Id recommend after cutting 1/16 off root ends closest end mounting holes blades fastened together blade top other using two 4-40x1 screws nuts through mounting holes cut 21 mark measured root top blade both blades cut together com mon reference being attachment points sure glass 4 roots blade per instructions didnt encounter problems rotor-head construction lead-lag ad justment coning-angle adjustment covered pages 8 9 10 tighten 5-40x1 bolt head must teeter limited dampener tubing during adjustment coning angle finally helicopter flown Install radio equipment liking reference instructions page 10 Radio Pushrod stallation through remainder factorys instructions notes check lists excellent American R/C really impressed detail re garding pushrod installation pre flight set-up Before first flight Com mander required two packages Pra ther Products Stick-On Weights 12 oz nose balance helicopter recommended Center Gravity Adding much weight disap pointing probably due choice light weight airborne battery pack location airborne sys tem used Ace R/C Digital Com mander receiver converted negative pulse four Pro-Line PLS-l 2 servos complete airborne system easily installed under seat Am erican R/C recommends battery pack installed forward seat couldnt resist hiding Hovering Commander should present particular problems Like helicopter similar aerobatic capabilities control response immedi ate first flights winds gust ing 20 knots machine behaved quite well tail rotor mixer date have flown Commander fast forward flight done aerobatics Im sure capable As mentioned earlier Command er may fitted autorotation device see photo modification kit consists basically replacement ny lon gear uni-directional bearing replacement bearing block has relieved accept addition one-way bearing gear ltest Commander fuselage side plates have drilled factory ac cept modification retro-fit standard Commander main ro tor blades must also replaced included model kit use autorotation device allows main rotor windmill event engine failure planned engine shut-down Since tail rotor drive via direct belt drive engine turning during autorotation main rotor pilot has control cy clic main rotor collective pitch tail rotor no longer necessary anti-torque function anyway autorotation device neat sys tem ability autorotate likely immedintely benefit rank beginner since beginners practice should altitude blade inertia alone will get helicop ter ground minimal damage advanced helicopter fliers wanting autorotation capability may de sire modification potential saving helicopter crashes due engine failure just provide new maneuver practice cer tainly degree skill necessary properly perform autorotation down soft landing device has proven itself re cent Tangerine several Ameri can R/C Helicopter Team demonstrated successful engine-out landings alti tudes 75 300 feet look forward trying autorotations soon will comment further time Gone flying Commander See next month Tbe AMA Nats arent far off folks scan Competition Newsletter section latest April issue Model viat ion has preliminaries late entry fee year $5000 Dave Chesney Rt 9 Box 621A Greensboro NC 27409 RC Aerobatics/Van Putte continued page 36 giving him troubleand other expert can con helping will answer question think Dick has great idea am willing give try Just case receptive Dick included two problems Ill give first shot month 10-6 9 7 Nashville Slow 8- 8 Gillopt 8 8 Regular 8-7 Regular 7 6 7 55 KELLY PROPS Winningest Fiberglas Graphite Propellers U S Nationals $650 Rat $650 $500 $475 $475 $375 Graphite $500 6% 5% Willoughby $375 Graphite $500 6 7/8 52 Anderson Ballard Latest Version Mk-3 $375 Graphite $500 7 4 FAI Combat Prop $375 Team Race Props DRAZEK NOVA JOHN GRAY Fiber $375 Graphite $500 ODDY ONE BLADE PROP W/out Counter Balence Fiber $400 Graphite $500 ORDER DIRECT 72 hour shipping cashiers checks money orders 10-day personal checks Money promptly refunded prop stock See Winston-Salem KELLY PRODUCTS NC P0 BOX 38 WESTERN SPRINGS IL 60558 June1979 111
Edition: Model Aviation - 1979/06
Page Numbers: 34, 35, 110, 111
IVE always thought pretty good flying weather North Caro lina least until year Weve just wrapped up 14 weeks lousy weekend weather Im writing June column Im looking forward flying new American R/C Commander hel icopter getting cold wet process first reported about Command er after seeing prototype 1978 Nats Commanders like weather have changed considerably since production Commander retains rugged Revolution II frame work adds components neces sary change fixed-pitch Revolu tion II collective-pitch aerobatic helicopter addition recent modification kit Com manders have autorotation potential Since basic Revolution II configura tion retained modification existing Revolution II Revolution II Rigid Rotor helicopters fairly simple oper ation although simple may have led believe December column modification Rigid Ro tor Commander will require dif ferent rear bulkhead radio installa tion Modification fixed-pitch Revolution II will necessarily re quire new bulkhead radio installa tion because radio installation al identical Command er Both Revolution II Rigid Rotor fixed-pitch Revolution will require addition replacement several components perhaps addition two holes drilled side frames accept collective toggle Later Revo lution II helicopters will shipped holes factory-drilled accept collective-pitch toggle assembly added components replaced main gear spacer washer main rotor shaft M/R shaft bearings swash plate course complete rotor head modification kit includes components instructions necessary convert existing Revolution II available factory Ill es timate modification may com pleted under four hours have chosen Commander first RC helicopter kit follow ing notes regarding construction may help kit included 14 pages structions construction set up flying plus 57 photographs supplement ing written instructions photo graphs did reproduce well lacked details intended written instructions very descriptive need photos minimaL American R/C remaking photos later Commander kits instructions numbered written check list Id rec ommend read thoroughly fore beginning construction may wish deviate did following notes Ill refer con struction steps name page num ber applicable frame-up basic helicopter goes very quickly After completing first six steps regarding construction fuselage skids page before installing engine Id rec ommend cutting out fitting former cabin canopy much easier handle lightweight frame work near-completed helicop ter see photos skip page six re garding former cabin canopy Cut out former following diecut outlines Follow instructions pages six seven regarding fitting cabin canopy complete check off steps regard ing servo positioning drilling pushrod holes resining former form er tank hole cut can tached temporarily basic frame cabin canopy cut fitted per factory instructions Dremel tool abrasive wheel works great cutting epoxy-glass cabin would like close fit between fuel tank former shown photos mixture 5-minute epoxy micro-balloons can fill gaps used Gas Model Products SixMinute Epoxy K&B micro-balloons mixed putty consistency Masking tape may used along edges fuselage fuel tank cut-out protect metal finish fuel tank rubber stopper installed set former cut-out against fuselage frames Mix epoxy micro-bal American Fl/C Commander Heli ball muffler available plan MoUnts tabricalsa bY autnor Tar U Max OUl~Ii engineKit mounts ror 61 Boy ran Daves line vision forced him hit ground before finishing exotic test stagemay make comments later 34 Model Aviation Parts package autorotation moditication kit Expert rotor blades shown kit avail able American fits new Commander loons fill gaps around tank Once epoxy sets tank can squeezed break slight bond removed former Remove former fuselage sand epoxy flush front rear former result should fuel tank cut-out no gaps through fuel dirt may later enter radio compartment Now once former cabin canopy fitted removed well return page continue construction per Americans instructions Care should taken during swash-plate assembly page four Avoid over-tightening 2-56x1 screw Also confirm screw will terfere swash-plate uniball swash-plate tilted ex tremes 2-56x1 screw will probably need cut off about 1116 inch Also page four regarding Continued page 110 June1979 35 Left Completed former servos installed View right side showing routing right/left cyclic pushrod tail rotor pushrod tube se cured nylon guides Guides drilledout strip aileron horns Daves leftovers box Right Throttle/collective installation shown per Americans recommendation see text Note additional detail tank cutout suppose experts like Dave would modify new carl Left Forward siderouting collective/throttle pushrods Left clutch housing collective-pitch spinner assembly Dave turned down OD spinner clearance see text Right recommends preliminary fitting rear former cabin canopy before installing engine/clutch assembly Note close-fit tanksee text Notch may made frame clear tank bubble ompietea rolor-neau instaiwimun snowing rouing us oonrol rods swash plate cyclic servo motor flybar swash plate cyclic/collective mixer collective yoke cyclic/collective mixer Collective pitch via rod along slotted main shaft rotor models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA lective pushrod connections servo shown per Americans instruc tions made piggy-back servo arm standard arm two bushings discarded Robart servo two 2-56 screws nuts throttle pushrod top arm collective beneath may follow similar installation follow Americans instruc tions main rotor blade assembly notes regarding trimming blades length may misleading beginner trim blades length instruc tions call trimming root end ap proximately 1/16 measuring ex actly 21 root end blade achieve blades equal length Id recommend after cutting 1/16 off root ends closest end mounting holes blades fastened together blade top other using two 4-40x1 screws nuts through mounting holes cut 21 mark measured root top blade both blades cut together com mon reference being attachment points sure glass 4 roots blade per instructions didnt encounter problems rotor-head construction lead-lag ad justment coning-angle adjustment covered pages 8 9 10 tighten 5-40x1 bolt head must teeter limited dampener tubing during adjustment coning angle finally helicopter flown Install radio equipment liking reference instructions page 10 Radio Pushrod stallation through remainder factorys instructions notes check lists excellent American R/C really impressed detail re garding pushrod installation pre flight set-up Before first flight Com mander required two packages Pra ther Products Stick-On Weights 12 oz nose balance helicopter recommended Center Gravity Adding much weight disap pointing probably due choice light weight airborne battery pack location airborne sys tem used Ace R/C Digital Com mander receiver converted negative pulse four Pro-Line PLS-l 2 servos complete airborne system easily installed under seat Am erican R/C recommends battery pack installed forward seat couldnt resist hiding Hovering Commander should present particular problems Like helicopter similar aerobatic capabilities control response immedi ate first flights winds gust ing 20 knots machine behaved quite well tail rotor mixer date have flown Commander fast forward flight done aerobatics Im sure capable As mentioned earlier Command er may fitted autorotation device see photo modification kit consists basically replacement ny lon gear uni-directional bearing replacement bearing block has relieved accept addition one-way bearing gear ltest Commander fuselage side plates have drilled factory ac cept modification retro-fit standard Commander main ro tor blades must also replaced included model kit use autorotation device allows main rotor windmill event engine failure planned engine shut-down Since tail rotor drive via direct belt drive engine turning during autorotation main rotor pilot has control cy clic main rotor collective pitch tail rotor no longer necessary anti-torque function anyway autorotation device neat sys tem ability autorotate likely immedintely benefit rank beginner since beginners practice should altitude blade inertia alone will get helicop ter ground minimal damage advanced helicopter fliers wanting autorotation capability may de sire modification potential saving helicopter crashes due engine failure just provide new maneuver practice cer tainly degree skill necessary properly perform autorotation down soft landing device has proven itself re cent Tangerine several Ameri can R/C Helicopter Team demonstrated successful engine-out landings alti tudes 75 300 feet look forward trying autorotations soon will comment further time Gone flying Commander See next month Tbe AMA Nats arent far off folks scan Competition Newsletter section latest April issue Model viat ion has preliminaries late entry fee year $5000 Dave Chesney Rt 9 Box 621A Greensboro NC 27409 RC Aerobatics/Van Putte continued page 36 giving him troubleand other expert can con helping will answer question think Dick has great idea am willing give try Just case receptive Dick included two problems Ill give first shot month 10-6 9 7 Nashville Slow 8- 8 Gillopt 8 8 Regular 8-7 Regular 7 6 7 55 KELLY PROPS Winningest Fiberglas Graphite Propellers U S Nationals $650 Rat $650 $500 $475 $475 $375 Graphite $500 6% 5% Willoughby $375 Graphite $500 6 7/8 52 Anderson Ballard Latest Version Mk-3 $375 Graphite $500 7 4 FAI Combat Prop $375 Team Race Props DRAZEK NOVA JOHN GRAY Fiber $375 Graphite $500 ODDY ONE BLADE PROP W/out Counter Balence Fiber $400 Graphite $500 ORDER DIRECT 72 hour shipping cashiers checks money orders 10-day personal checks Money promptly refunded prop stock See Winston-Salem KELLY PRODUCTS NC P0 BOX 38 WESTERN SPRINGS IL 60558 June1979 111
Edition: Model Aviation - 1979/06
Page Numbers: 34, 35, 110, 111
IVE always thought pretty good flying weather North Caro lina least until year Weve just wrapped up 14 weeks lousy weekend weather Im writing June column Im looking forward flying new American R/C Commander hel icopter getting cold wet process first reported about Command er after seeing prototype 1978 Nats Commanders like weather have changed considerably since production Commander retains rugged Revolution II frame work adds components neces sary change fixed-pitch Revolu tion II collective-pitch aerobatic helicopter addition recent modification kit Com manders have autorotation potential Since basic Revolution II configura tion retained modification existing Revolution II Revolution II Rigid Rotor helicopters fairly simple oper ation although simple may have led believe December column modification Rigid Ro tor Commander will require dif ferent rear bulkhead radio installa tion Modification fixed-pitch Revolution II will necessarily re quire new bulkhead radio installa tion because radio installation al identical Command er Both Revolution II Rigid Rotor fixed-pitch Revolution will require addition replacement several components perhaps addition two holes drilled side frames accept collective toggle Later Revo lution II helicopters will shipped holes factory-drilled accept collective-pitch toggle assembly added components replaced main gear spacer washer main rotor shaft M/R shaft bearings swash plate course complete rotor head modification kit includes components instructions necessary convert existing Revolution II available factory Ill es timate modification may com pleted under four hours have chosen Commander first RC helicopter kit follow ing notes regarding construction may help kit included 14 pages structions construction set up flying plus 57 photographs supplement ing written instructions photo graphs did reproduce well lacked details intended written instructions very descriptive need photos minimaL American R/C remaking photos later Commander kits instructions numbered written check list Id rec ommend read thoroughly fore beginning construction may wish deviate did following notes Ill refer con struction steps name page num ber applicable frame-up basic helicopter goes very quickly After completing first six steps regarding construction fuselage skids page before installing engine Id rec ommend cutting out fitting former cabin canopy much easier handle lightweight frame work near-completed helicop ter see photos skip page six re garding former cabin canopy Cut out former following diecut outlines Follow instructions pages six seven regarding fitting cabin canopy complete check off steps regard ing servo positioning drilling pushrod holes resining former form er tank hole cut can tached temporarily basic frame cabin canopy cut fitted per factory instructions Dremel tool abrasive wheel works great cutting epoxy-glass cabin would like close fit between fuel tank former shown photos mixture 5-minute epoxy micro-balloons can fill gaps used Gas Model Products SixMinute Epoxy K&B micro-balloons mixed putty consistency Masking tape may used along edges fuselage fuel tank cut-out protect metal finish fuel tank rubber stopper installed set former cut-out against fuselage frames Mix epoxy micro-bal American Fl/C Commander Heli ball muffler available plan MoUnts tabricalsa bY autnor Tar U Max OUl~Ii engineKit mounts ror 61 Boy ran Daves line vision forced him hit ground before finishing exotic test stagemay make comments later 34 Model Aviation Parts package autorotation moditication kit Expert rotor blades shown kit avail able American fits new Commander loons fill gaps around tank Once epoxy sets tank can squeezed break slight bond removed former Remove former fuselage sand epoxy flush front rear former result should fuel tank cut-out no gaps through fuel dirt may later enter radio compartment Now once former cabin canopy fitted removed well return page continue construction per Americans instructions Care should taken during swash-plate assembly page four Avoid over-tightening 2-56x1 screw Also confirm screw will terfere swash-plate uniball swash-plate tilted ex tremes 2-56x1 screw will probably need cut off about 1116 inch Also page four regarding Continued page 110 June1979 35 Left Completed former servos installed View right side showing routing right/left cyclic pushrod tail rotor pushrod tube se cured nylon guides Guides drilledout strip aileron horns Daves leftovers box Right Throttle/collective installation shown per Americans recommendation see text Note additional detail tank cutout suppose experts like Dave would modify new carl Left Forward siderouting collective/throttle pushrods Left clutch housing collective-pitch spinner assembly Dave turned down OD spinner clearance see text Right recommends preliminary fitting rear former cabin canopy before installing engine/clutch assembly Note close-fit tanksee text Notch may made frame clear tank bubble ompietea rolor-neau instaiwimun snowing rouing us oonrol rods swash plate cyclic servo motor flybar swash plate cyclic/collective mixer collective yoke cyclic/collective mixer Collective pitch via rod along slotted main shaft rotor models fuel tank must located space normally occupied people avoid awkward arrangement have made practice extend model fuse lage basic structure forward false firewall immediately behind engine using short aluminum engine mounts cowl extends rearward cover protruding frame addition supple menting rigidity permits fuel tank carried within basic fuselage box point very close behind engine keeping fuel line short possible short fuel line will reliable engine runs singie item other adding pump past found standard model tank would visible cockpit have made special tanks Using 005 shim brass lightness assembled soldering tank could made shape similar prototype placed out view under front deck should kept mind however model fuel will erode brass tank must completely emptied after flying session standard sili cone rubber tube clunk weight sealed permanently inside soldering rear tank place last operation thin brass very easily soldered maximum scale appearance large diameter brass tube can extend tank top scale filler location neoprene stopper assure air tightness muffler pressure Scale fillers practi cal impossibility standard plastic tanks Using scale filler spout operation requires extreme care since over-filling will spill raw fuel exterior surfaces space surrounding oil absorbed become permanent part plane reason cannot recom mended have never tempted use though often asked dummy fuel caps functional completely sealed 005 brass tank gives audible oil-can sound reaches maximum capacity during filling can effective indicator except flightline neighbor tuning engine disadvantage mounting fuel tank near scale location fuselage will likely too high above engine needle valve could result flood fuel inside cowl engine started immediately after filling tank especially planes having tricycle land ing gear near-level fuselage ideal tank location always easily achieved scale models designing model prefer consider engine mounting tank location early development stages first items shown initial layout model structure drawn around tank its center 1/4 1/2 below needle valve Side near-inverted engine mountings often afford advantages because tank can installed convenient position lower fuselage vertical inverted engine should avoided presents difficulties starting due drowned giow plug often see modelers holding plane inverted get engine upright starting An engine set ten degrees right vertical will have problem has additional benefit placing muffler nearer plane centerline easier concealment inverted upright engine can swung through arc 170 degrees help find ideal tank level location well fitting cowl shape cost no obstacle Perry Robart pumps practical solutions permit tanks located manner really no good reason engine stick straight up through cowl scale plane spoiling shape nose front 1/4 models appear ance crucial preservation prototype characteristic contour Any change nose shape will destroy sought-after illusion shrunken reality feel attracted plane extent would like model real reason always seems have something business end fuselage nose cannot spend up year lives duplicating miniature plane ugly untidy nose old argument inverted engine hard start sufficient reason now know simple solution angie mounting benefits derived particularly tank location whole airplane suffers nose section lacks authenticity Bob Dolly Wiseher Rt 1 S-221 Lap ham Peak Rd. Deloflel4 WI 53018 RC Helicopters/Chesney continued page 35 main rotor shaft hardware installa tion pitch change wire CMl9 should sanded filed remove ex cess solder threaded coupling coupling dressed will interfere collective follower/dampening block after installation rotor-head assembly Still page four collectivepitch bellcrank assembly may need modification spinner outside diam eter may interfere bend collective pushrod very little clearance between bend radius hole spinner through puslirod connected Confirmation problem must made after main rotor head attached shaft Lock-up certain unless collective wire retained its running position between collective follower/damp ener block slots main rotor head assembly problem experienced may remedied either removing spinner its bearing block turning outside diameter down countersinking hole spin ner provide clearance collec tive wire bend radius Dont attempt countersink using electric hand drill precise depth control necessary avoid drilling clean through spinner American R/C has modified later spin ners counter-drilling clearance Now pages 6 7 former installation Refer full-size plans page 10 servo locations pushrod routing Mark cut servo pushrod holes install trays tail rotor throttle servos Note photos helicopter deviate Americans recommended servo installations have always relied commercially available servo trays tailored radio installation around Also throttle col 110 Model Aviation 4 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINER Design & Kit ALL TIME - Price $3995 Ask over 25000 satisfied builders H-BA Yand dealers sold them- kit per SHALL WE SAY MORE Andresas Aircraft Model co Inc 05 Rte 1& North St Topsfield Mass 01983 887-8541 doUar bar em Support AMA lective pushrod connections servo shown per Americans instruc tions made piggy-back servo arm standard arm two bushings discarded Robart servo two 2-56 screws nuts throttle pushrod top arm collective beneath may follow similar installation follow Americans instruc tions main rotor blade assembly notes regarding trimming blades length may misleading beginner trim blades length instruc tions call trimming root end ap proximately 1/16 measuring ex actly 21 root end blade achieve blades equal length Id recommend after cutting 1/16 off root ends closest end mounting holes blades fastened together blade top other using two 4-40x1 screws nuts through mounting holes cut 21 mark measured root top blade both blades cut together com mon reference being attachment points sure glass 4 roots blade per instructions didnt encounter problems rotor-head construction lead-lag ad justment coning-angle adjustment covered pages 8 9 10 tighten 5-40x1 bolt head must teeter limited dampener tubing during adjustment coning angle finally helicopter flown Install radio equipment liking reference instructions page 10 Radio Pushrod stallation through remainder factorys instructions notes check lists excellent American R/C really impressed detail re garding pushrod installation pre flight set-up Before first flight Com mander required two packages Pra ther Products Stick-On Weights 12 oz nose balance helicopter recommended Center Gravity Adding much weight disap pointing probably due choice light weight airborne battery pack location airborne sys tem used Ace R/C Digital Com mander receiver converted negative pulse four Pro-Line PLS-l 2 servos complete airborne system easily installed under seat Am erican R/C recommends battery pack installed forward seat couldnt resist hiding Hovering Commander should present particular problems Like helicopter similar aerobatic capabilities control response immedi ate first flights winds gust ing 20 knots machine behaved quite well tail rotor mixer date have flown Commander fast forward flight done aerobatics Im sure capable As mentioned earlier Command er may fitted autorotation device see photo modification kit consists basically replacement ny lon gear uni-directional bearing replacement bearing block has relieved accept addition one-way bearing gear ltest Commander fuselage side plates have drilled factory ac cept modification retro-fit standard Commander main ro tor blades must also replaced included model kit use autorotation device allows main rotor windmill event engine failure planned engine shut-down Since tail rotor drive via direct belt drive engine turning during autorotation main rotor pilot has control cy clic main rotor collective pitch tail rotor no longer necessary anti-torque function anyway autorotation device neat sys tem ability autorotate likely immedintely benefit rank beginner since beginners practice should altitude blade inertia alone will get helicop ter ground minimal damage advanced helicopter fliers wanting autorotation capability may de sire modification potential saving helicopter crashes due engine failure just provide new maneuver practice cer tainly degree skill necessary properly perform autorotation down soft landing device has proven itself re cent Tangerine several Ameri can R/C Helicopter Team demonstrated successful engine-out landings alti tudes 75 300 feet look forward trying autorotations soon will comment further time Gone flying Commander See next month Tbe AMA Nats arent far off folks scan Competition Newsletter section latest April issue Model viat ion has preliminaries late entry fee year $5000 Dave Chesney Rt 9 Box 621A Greensboro NC 27409 RC Aerobatics/Van Putte continued page 36 giving him troubleand other expert can con helping will answer question think Dick has great idea am willing give try Just case receptive Dick included two problems Ill give first shot month 10-6 9 7 Nashville Slow 8- 8 Gillopt 8 8 Regular 8-7 Regular 7 6 7 55 KELLY PROPS Winningest Fiberglas Graphite Propellers U S Nationals $650 Rat $650 $500 $475 $475 $375 Graphite $500 6% 5% Willoughby $375 Graphite $500 6 7/8 52 Anderson Ballard Latest Version Mk-3 $375 Graphite $500 7 4 FAI Combat Prop $375 Team Race Props DRAZEK NOVA JOHN GRAY Fiber $375 Graphite $500 ODDY ONE BLADE PROP W/out Counter Balence Fiber $400 Graphite $500 ORDER DIRECT 72 hour shipping cashiers checks money orders 10-day personal checks Money promptly refunded prop stock See Winston-Salem KELLY PRODUCTS NC P0 BOX 38 WESTERN SPRINGS IL 60558 June1979 111