Radio Control Helicopters. Dave Chesney LAST MONTH promised get back basics report progress local RC helicopter student intent will answer some ques tions have regarding new endeavor Unlike some Gregg elected buy machine fully assembled less radio purchased kit have assembled instructions some points follow will familiar other hand bought used helicopter Gregg did review may great significance First Id like point out im possible learn fly RC helicopter reading about Reading may help practice perseverance keys learning new skills order achieve practice receive benefit must become expert ticulous maintaining machine Note did say expert building machine Building gets flying field maintenance keeps air Buying building new kit does guarantee success used helicopter available savings consider consider carefully Ideally used helicopter being offered competent pilot willing help learn fly may demonstrate maD Ij IBEARING SUPPORT IBLOCKS CHECK FORI SPACERAND ..L CLEARANCEI HERE FRAME F chine before buy well other hand used machine may available due previous owners lack success case probably up determine what wrong thing machine some questions ask yourself about used machine 1 helicopter still available kit form parts repairs may readily available 2 Are building instructions available machine instructions available time may elect find set before buying machine ENGINE rlay easily critique condition machine aid set up maintenance machine buy Most instruction booklets may bought under $1000 current manufacturers 3 helicopter obviously worn out check instructions parts price list determine approximate cost replacing critical subassemblies components could new ma chine least expensive routeor may still have good deal 4 crash damage what kind Continued page 98 28 Model Aviation Above Are rotor blades equal length Jim Hammontree has quick field remedy Simple adjustment best performed shop Bryan Watson assists Below Friction due improper clearance can render helicopter earthbound Periodically check area clearance See text nail Youmans ooes water DICKUD wITfl flUIlDOY WHY PAY big buy high performance *FIREBALL #H30 HOT 3 volts faster starts #S20 STANDARD 24 volts general use #C15 COOL 15 volts cures pre-ignition t fun stick FIR BALL great engine ru * advanced . U UNEXCLLID POWEP DRAIN C77 J 71 GLOW PLUGS eeeOOOeeeOOeOeeeeOOOeOO4 SWANSON ASSOCIATES P0 BOX 151WAYNE NEW JERSEY 07470 moisture can excess seems slow set Try work material thin film extends onto masking tape finished set aside until thoroughly hardened Most trimming sanding done before masking tape removed have found rat tail file great preliminary shaping followed up sandpaper have sanded down masking tape satisfied contours remove tape remains retape canopy before final painting 3M makes thin mylar tape used fairly straight lines gives very clean edge paint necessity painting edge tape clear dope remainder canopy can covered ordinary masking tape Color Documentation Finding good qual ity photos subject aircraft neces sity documentation well mation source during construction Access prototype solves problem contemporary planes builders choose subjects available must rely books magazines museums manufacturers photos obtain maximum points finish color markings color photo would advis able may possible obtain through new service offered scale modelers AMA member Roger Ablett Ablett Photography 8441 Buckland Ave La Mesa Calif 92041 Roger has personal collection photographs sev eral hundred rare unusual aircraft actual product offered will primarily professional custom hand-printed glossy color 8 X l0 enlargements slides made order photos taken part scale modeler mind also has available flight shots air show planes warbirds taken ground long telephoto lenses make fine photos home workshop Anyone wishing photos should write Roger above address cluding self addressed stamped en velope stating needs specific plane type Bob fly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Helicopters/Chesney continued page 28 Check bent shafts broken gears etc much will replacements cost 5 Are special tools included Check instructions confirm 6 Is helicopter really what want Some folks gotta have new stuff Are Assume now youve bought used helicopter Use instructions perform radio/engine instal lation also critical examination builders techniques Look correct some common problems 1 Nuts bolts installed properly lock-tite lock nuts washers used appropriately 2 Rotating parts properly aligned lubricated Check particularly engine fan/clutch assembly alignment clutch housing Also check proper gear mesh Are gears chipped 3 Wood parts properly assembled wooden parts rely glue rather fit strength Are exposed wood parts fuel-proof 4 Pushrods installed allow ex cessive slop pushrods should routed servos directly control minimum bends 5 Excessive modifications Check structions remove mods unless abso lutely necessary safety Rebuild fac tory specs 6 Improper set-up controls and/or rotor system Recheck instructions confirm set-up points followed 7 Bent main tail rotor shaft crash induced 8 Main tail rotors balanced unequal length see photo above points directed buyer used machine may also find few points worthy con sideration particularly after first crash After machine new Gregg has found proper main tenance absolutely necessary flight trick has learned new parts always necessary instance recent mishap resulted bent main rotor shaft Rather buy new Gregg shaft straightened local machine shop $400 Another tip check clearance nylon gear bearing support block side frames ala Helibaby Revolu tion see Fig Although spacer washer installed found wear pos sibly heat generated bearing caused spacer drawn partially nylon thus reducing clear ances As rpm lift approached lift-off point main rotor shaft gear pulled up against bearing block side frames additional friction reduced rpm point helicopter would barely continue hover same time torque increased much tail rotor could maintain heading Sound familiar correct problem insert additional spacers insure clear ance Remember friction/drag will de crease rpm increase torque hel icopter mechanical friction aerody namic drag due excessive rotor pitch will probably show up first tail rotor anti-torque rotor response Next month Ill go detail about helicopter set-up Meanwhile build some extra blades recheck align ments try again Rules have arrived time rules reward machine capability expense pilot capability perform pre cision maneuvers So some events ing run modifications take account witness following letter Norm Holland Helicopter Event Director Tangerine International Meet Dear Dave would appreciate receiving sup port column Tangerine Helicopter event year have pushed Tangerine planning commit tee two full days half days last year working hard make helicopter event perma nent portion annual meet takes participation As know Tangerine big meet two half days pattern half days Formula day stand-off scale two days helicopter total four days Helicopters will flown off site country club setting AMA maneuvers will flown AAA AMA meet however going modify expert free-style category want upgrade fly ing try open up types helicopters just two fully aerobatic models plans final writing plan limit se lected maneuvers six within four minutes will give time per form maneuver just try get quantity fly like drunk bumble 98 Model Aviation bee Also required make work adjustment K factors loop roll now almost common place therefore K factor once exotic maneuvers will lowered will allow less acrobatic Helos competitive precision flying other key point once flight plan chosen pilot must stick throughout meet did last year final scores very close would like thank ad vance support 79 TangerineNorman Holland Hel icopter Event Director Looks like Norms group putting gether great meet dates Decem ber 30 31 headquarters motel Red Carpet Inn Altamonte Springs Fla 1-305-862-5221 See contest list ings further details See next month Dave Chesney Rt 9 Box 621A Greensboro NC 27409 RC Oldtimers/Mathews continued page 29 Woody cautions would-be builder think light cut elevator rudder /2 sheet recommends built-up surfaces punching holes sheet Radio components should placed well forward Woody also used some wood size substitutions no spruce better carry loads stand ardize dimensions has done splendid job thinking out conversion grand old design modern use Woodrow Wilson 1423 Basilan Lane Houston TX 77058 Danny Sheelds has compiled collection antique ads photos booklet form puts size shape mys terious names appear oldtimer plans lists Containing nearly 80 pages layouts ads pictures gas jobs up Dec 1942 booklet costs $695 Danny Sheelds 3 Cinnamon Circle Apt lC Randalistown MD 21133 Danny also producing kits King Burd suitable 15cc 30cc power RC FF Perhaps interesting activity Oskosh just looking commercial exhibits flea markets display incredible variety interesting unusu al wares Among treasure trove Wag-Aero booth supplier several items used full scale aircraft construc tion maintainance also ap plicable modeling uses stock will ship clear nitrate dope nitrate dope plasticizedand nitrate thinner gal lons considerable saving over 8 oz cans source plasticized nitrate know reader knows source TCP small quantity use please share informa tion us Also listed free catalog tools polyurethane epoxy finishes Dacron yard goods tapes metals etc seeking ultimate jumbo scale kits Wag also produces parts packs needed pieces build Piper J-3 Wagobond Vagabond one-foot-tothe-foot scale Wag-Aero PO Box 181 Lyons WI 53148 presume model magazine has printed least photo Sal Taibis Anderson Pylon Just different Ive chosen photo engine mount friend Larry Kruse took Lake Charles Talk about innovative ideas unlikely models Forester 99 has always repu tation motor beams prone fracture destroying lower crankcase Sal has treated problem combining large cast-aluminum radial mount breakaway wood beams beams held metal screws running hor izontally motor bolted wood further protect motor landing gear motor mount ignition accessories fastened common unit turn held fuselage elas tics hooks similar ignition-power stick unit used old Berkeley American Ace Editors Note Struck used stick New Ruler American Ace scaled down idea first saw light day KG Kovel-Grant designed Charlie Grant published MAN used extended cantilever mount pro jected fuselage Have ever put last coat color finish find youve covered up painted over holds hardware mounting can no longer remember Turn off lights Frequently can locate holes shining flashlight interior shop lights turned off small pencell unit will help Ive fastened onto stick masking tape reach difficult access areas Once hole lo cated merely insert pin ref erence after lights back Although effective fabric film covered holes technique can also used locate engine mount holes under fiberglass tape Ed N4oorman Eglin AFB FL wife just returned visit dad El Paso piled 5 planes van flies too drove Florida Bombshell 5 El Paso RC field trimmed Buzzard higher altitude let Dad flown rubber models back 30s give try second flight doing great refused try landing third flight refused take transmitter back gave him verbal directions plan glide put right down runway both sitting lawn chairs time Ed wrote Hot Dog Flying article RCM enjoyed much says occasionally get tired watching pattern job haul out Buzzard relax can sit back prop feet up enjoy some low no pressure fun flying ends note inquiry about GHQ Sportster plans Ive sent him nearly 100 others copy SAM suppliers list feel Ed has succinctly put oldtimers attractions proper perspective Most us enjoy stately old gals attracted inherent recrea tional value challenge poking January 1979 99 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Support AMA Price $3995 GREATEST B/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themThe kit per SHALL WE SAY MORE Andrews Aircraft Model Co Inc US Ete t& North St Topsfield Mass 01983 887-8541dollar hue em all
Edition: Model Aviation - 1979/01
Page Numbers: 28, 98, 99
Radio Control Helicopters. Dave Chesney LAST MONTH promised get back basics report progress local RC helicopter student intent will answer some ques tions have regarding new endeavor Unlike some Gregg elected buy machine fully assembled less radio purchased kit have assembled instructions some points follow will familiar other hand bought used helicopter Gregg did review may great significance First Id like point out im possible learn fly RC helicopter reading about Reading may help practice perseverance keys learning new skills order achieve practice receive benefit must become expert ticulous maintaining machine Note did say expert building machine Building gets flying field maintenance keeps air Buying building new kit does guarantee success used helicopter available savings consider consider carefully Ideally used helicopter being offered competent pilot willing help learn fly may demonstrate maD Ij IBEARING SUPPORT IBLOCKS CHECK FORI SPACERAND ..L CLEARANCEI HERE FRAME F chine before buy well other hand used machine may available due previous owners lack success case probably up determine what wrong thing machine some questions ask yourself about used machine 1 helicopter still available kit form parts repairs may readily available 2 Are building instructions available machine instructions available time may elect find set before buying machine ENGINE rlay easily critique condition machine aid set up maintenance machine buy Most instruction booklets may bought under $1000 current manufacturers 3 helicopter obviously worn out check instructions parts price list determine approximate cost replacing critical subassemblies components could new ma chine least expensive routeor may still have good deal 4 crash damage what kind Continued page 98 28 Model Aviation Above Are rotor blades equal length Jim Hammontree has quick field remedy Simple adjustment best performed shop Bryan Watson assists Below Friction due improper clearance can render helicopter earthbound Periodically check area clearance See text nail Youmans ooes water DICKUD wITfl flUIlDOY WHY PAY big buy high performance *FIREBALL #H30 HOT 3 volts faster starts #S20 STANDARD 24 volts general use #C15 COOL 15 volts cures pre-ignition t fun stick FIR BALL great engine ru * advanced . U UNEXCLLID POWEP DRAIN C77 J 71 GLOW PLUGS eeeOOOeeeOOeOeeeeOOOeOO4 SWANSON ASSOCIATES P0 BOX 151WAYNE NEW JERSEY 07470 moisture can excess seems slow set Try work material thin film extends onto masking tape finished set aside until thoroughly hardened Most trimming sanding done before masking tape removed have found rat tail file great preliminary shaping followed up sandpaper have sanded down masking tape satisfied contours remove tape remains retape canopy before final painting 3M makes thin mylar tape used fairly straight lines gives very clean edge paint necessity painting edge tape clear dope remainder canopy can covered ordinary masking tape Color Documentation Finding good qual ity photos subject aircraft neces sity documentation well mation source during construction Access prototype solves problem contemporary planes builders choose subjects available must rely books magazines museums manufacturers photos obtain maximum points finish color markings color photo would advis able may possible obtain through new service offered scale modelers AMA member Roger Ablett Ablett Photography 8441 Buckland Ave La Mesa Calif 92041 Roger has personal collection photographs sev eral hundred rare unusual aircraft actual product offered will primarily professional custom hand-printed glossy color 8 X l0 enlargements slides made order photos taken part scale modeler mind also has available flight shots air show planes warbirds taken ground long telephoto lenses make fine photos home workshop Anyone wishing photos should write Roger above address cluding self addressed stamped en velope stating needs specific plane type Bob fly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Helicopters/Chesney continued page 28 Check bent shafts broken gears etc much will replacements cost 5 Are special tools included Check instructions confirm 6 Is helicopter really what want Some folks gotta have new stuff Are Assume now youve bought used helicopter Use instructions perform radio/engine instal lation also critical examination builders techniques Look correct some common problems 1 Nuts bolts installed properly lock-tite lock nuts washers used appropriately 2 Rotating parts properly aligned lubricated Check particularly engine fan/clutch assembly alignment clutch housing Also check proper gear mesh Are gears chipped 3 Wood parts properly assembled wooden parts rely glue rather fit strength Are exposed wood parts fuel-proof 4 Pushrods installed allow ex cessive slop pushrods should routed servos directly control minimum bends 5 Excessive modifications Check structions remove mods unless abso lutely necessary safety Rebuild fac tory specs 6 Improper set-up controls and/or rotor system Recheck instructions confirm set-up points followed 7 Bent main tail rotor shaft crash induced 8 Main tail rotors balanced unequal length see photo above points directed buyer used machine may also find few points worthy con sideration particularly after first crash After machine new Gregg has found proper main tenance absolutely necessary flight trick has learned new parts always necessary instance recent mishap resulted bent main rotor shaft Rather buy new Gregg shaft straightened local machine shop $400 Another tip check clearance nylon gear bearing support block side frames ala Helibaby Revolu tion see Fig Although spacer washer installed found wear pos sibly heat generated bearing caused spacer drawn partially nylon thus reducing clear ances As rpm lift approached lift-off point main rotor shaft gear pulled up against bearing block side frames additional friction reduced rpm point helicopter would barely continue hover same time torque increased much tail rotor could maintain heading Sound familiar correct problem insert additional spacers insure clear ance Remember friction/drag will de crease rpm increase torque hel icopter mechanical friction aerody namic drag due excessive rotor pitch will probably show up first tail rotor anti-torque rotor response Next month Ill go detail about helicopter set-up Meanwhile build some extra blades recheck align ments try again Rules have arrived time rules reward machine capability expense pilot capability perform pre cision maneuvers So some events ing run modifications take account witness following letter Norm Holland Helicopter Event Director Tangerine International Meet Dear Dave would appreciate receiving sup port column Tangerine Helicopter event year have pushed Tangerine planning commit tee two full days half days last year working hard make helicopter event perma nent portion annual meet takes participation As know Tangerine big meet two half days pattern half days Formula day stand-off scale two days helicopter total four days Helicopters will flown off site country club setting AMA maneuvers will flown AAA AMA meet however going modify expert free-style category want upgrade fly ing try open up types helicopters just two fully aerobatic models plans final writing plan limit se lected maneuvers six within four minutes will give time per form maneuver just try get quantity fly like drunk bumble 98 Model Aviation bee Also required make work adjustment K factors loop roll now almost common place therefore K factor once exotic maneuvers will lowered will allow less acrobatic Helos competitive precision flying other key point once flight plan chosen pilot must stick throughout meet did last year final scores very close would like thank ad vance support 79 TangerineNorman Holland Hel icopter Event Director Looks like Norms group putting gether great meet dates Decem ber 30 31 headquarters motel Red Carpet Inn Altamonte Springs Fla 1-305-862-5221 See contest list ings further details See next month Dave Chesney Rt 9 Box 621A Greensboro NC 27409 RC Oldtimers/Mathews continued page 29 Woody cautions would-be builder think light cut elevator rudder /2 sheet recommends built-up surfaces punching holes sheet Radio components should placed well forward Woody also used some wood size substitutions no spruce better carry loads stand ardize dimensions has done splendid job thinking out conversion grand old design modern use Woodrow Wilson 1423 Basilan Lane Houston TX 77058 Danny Sheelds has compiled collection antique ads photos booklet form puts size shape mys terious names appear oldtimer plans lists Containing nearly 80 pages layouts ads pictures gas jobs up Dec 1942 booklet costs $695 Danny Sheelds 3 Cinnamon Circle Apt lC Randalistown MD 21133 Danny also producing kits King Burd suitable 15cc 30cc power RC FF Perhaps interesting activity Oskosh just looking commercial exhibits flea markets display incredible variety interesting unusu al wares Among treasure trove Wag-Aero booth supplier several items used full scale aircraft construc tion maintainance also ap plicable modeling uses stock will ship clear nitrate dope nitrate dope plasticizedand nitrate thinner gal lons considerable saving over 8 oz cans source plasticized nitrate know reader knows source TCP small quantity use please share informa tion us Also listed free catalog tools polyurethane epoxy finishes Dacron yard goods tapes metals etc seeking ultimate jumbo scale kits Wag also produces parts packs needed pieces build Piper J-3 Wagobond Vagabond one-foot-tothe-foot scale Wag-Aero PO Box 181 Lyons WI 53148 presume model magazine has printed least photo Sal Taibis Anderson Pylon Just different Ive chosen photo engine mount friend Larry Kruse took Lake Charles Talk about innovative ideas unlikely models Forester 99 has always repu tation motor beams prone fracture destroying lower crankcase Sal has treated problem combining large cast-aluminum radial mount breakaway wood beams beams held metal screws running hor izontally motor bolted wood further protect motor landing gear motor mount ignition accessories fastened common unit turn held fuselage elas tics hooks similar ignition-power stick unit used old Berkeley American Ace Editors Note Struck used stick New Ruler American Ace scaled down idea first saw light day KG Kovel-Grant designed Charlie Grant published MAN used extended cantilever mount pro jected fuselage Have ever put last coat color finish find youve covered up painted over holds hardware mounting can no longer remember Turn off lights Frequently can locate holes shining flashlight interior shop lights turned off small pencell unit will help Ive fastened onto stick masking tape reach difficult access areas Once hole lo cated merely insert pin ref erence after lights back Although effective fabric film covered holes technique can also used locate engine mount holes under fiberglass tape Ed N4oorman Eglin AFB FL wife just returned visit dad El Paso piled 5 planes van flies too drove Florida Bombshell 5 El Paso RC field trimmed Buzzard higher altitude let Dad flown rubber models back 30s give try second flight doing great refused try landing third flight refused take transmitter back gave him verbal directions plan glide put right down runway both sitting lawn chairs time Ed wrote Hot Dog Flying article RCM enjoyed much says occasionally get tired watching pattern job haul out Buzzard relax can sit back prop feet up enjoy some low no pressure fun flying ends note inquiry about GHQ Sportster plans Ive sent him nearly 100 others copy SAM suppliers list feel Ed has succinctly put oldtimers attractions proper perspective Most us enjoy stately old gals attracted inherent recrea tional value challenge poking January 1979 99 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Support AMA Price $3995 GREATEST B/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themThe kit per SHALL WE SAY MORE Andrews Aircraft Model Co Inc US Ete t& North St Topsfield Mass 01983 887-8541dollar hue em all
Edition: Model Aviation - 1979/01
Page Numbers: 28, 98, 99
Radio Control Helicopters. Dave Chesney LAST MONTH promised get back basics report progress local RC helicopter student intent will answer some ques tions have regarding new endeavor Unlike some Gregg elected buy machine fully assembled less radio purchased kit have assembled instructions some points follow will familiar other hand bought used helicopter Gregg did review may great significance First Id like point out im possible learn fly RC helicopter reading about Reading may help practice perseverance keys learning new skills order achieve practice receive benefit must become expert ticulous maintaining machine Note did say expert building machine Building gets flying field maintenance keeps air Buying building new kit does guarantee success used helicopter available savings consider consider carefully Ideally used helicopter being offered competent pilot willing help learn fly may demonstrate maD Ij IBEARING SUPPORT IBLOCKS CHECK FORI SPACERAND ..L CLEARANCEI HERE FRAME F chine before buy well other hand used machine may available due previous owners lack success case probably up determine what wrong thing machine some questions ask yourself about used machine 1 helicopter still available kit form parts repairs may readily available 2 Are building instructions available machine instructions available time may elect find set before buying machine ENGINE rlay easily critique condition machine aid set up maintenance machine buy Most instruction booklets may bought under $1000 current manufacturers 3 helicopter obviously worn out check instructions parts price list determine approximate cost replacing critical subassemblies components could new ma chine least expensive routeor may still have good deal 4 crash damage what kind Continued page 98 28 Model Aviation Above Are rotor blades equal length Jim Hammontree has quick field remedy Simple adjustment best performed shop Bryan Watson assists Below Friction due improper clearance can render helicopter earthbound Periodically check area clearance See text nail Youmans ooes water DICKUD wITfl flUIlDOY WHY PAY big buy high performance *FIREBALL #H30 HOT 3 volts faster starts #S20 STANDARD 24 volts general use #C15 COOL 15 volts cures pre-ignition t fun stick FIR BALL great engine ru * advanced . U UNEXCLLID POWEP DRAIN C77 J 71 GLOW PLUGS eeeOOOeeeOOeOeeeeOOOeOO4 SWANSON ASSOCIATES P0 BOX 151WAYNE NEW JERSEY 07470 moisture can excess seems slow set Try work material thin film extends onto masking tape finished set aside until thoroughly hardened Most trimming sanding done before masking tape removed have found rat tail file great preliminary shaping followed up sandpaper have sanded down masking tape satisfied contours remove tape remains retape canopy before final painting 3M makes thin mylar tape used fairly straight lines gives very clean edge paint necessity painting edge tape clear dope remainder canopy can covered ordinary masking tape Color Documentation Finding good qual ity photos subject aircraft neces sity documentation well mation source during construction Access prototype solves problem contemporary planes builders choose subjects available must rely books magazines museums manufacturers photos obtain maximum points finish color markings color photo would advis able may possible obtain through new service offered scale modelers AMA member Roger Ablett Ablett Photography 8441 Buckland Ave La Mesa Calif 92041 Roger has personal collection photographs sev eral hundred rare unusual aircraft actual product offered will primarily professional custom hand-printed glossy color 8 X l0 enlargements slides made order photos taken part scale modeler mind also has available flight shots air show planes warbirds taken ground long telephoto lenses make fine photos home workshop Anyone wishing photos should write Roger above address cluding self addressed stamped en velope stating needs specific plane type Bob fly Wischer Rt 1 S-221 Lapham Peak Road Delafield WI 53018 RC Helicopters/Chesney continued page 28 Check bent shafts broken gears etc much will replacements cost 5 Are special tools included Check instructions confirm 6 Is helicopter really what want Some folks gotta have new stuff Are Assume now youve bought used helicopter Use instructions perform radio/engine instal lation also critical examination builders techniques Look correct some common problems 1 Nuts bolts installed properly lock-tite lock nuts washers used appropriately 2 Rotating parts properly aligned lubricated Check particularly engine fan/clutch assembly alignment clutch housing Also check proper gear mesh Are gears chipped 3 Wood parts properly assembled wooden parts rely glue rather fit strength Are exposed wood parts fuel-proof 4 Pushrods installed allow ex cessive slop pushrods should routed servos directly control minimum bends 5 Excessive modifications Check structions remove mods unless abso lutely necessary safety Rebuild fac tory specs 6 Improper set-up controls and/or rotor system Recheck instructions confirm set-up points followed 7 Bent main tail rotor shaft crash induced 8 Main tail rotors balanced unequal length see photo above points directed buyer used machine may also find few points worthy con sideration particularly after first crash After machine new Gregg has found proper main tenance absolutely necessary flight trick has learned new parts always necessary instance recent mishap resulted bent main rotor shaft Rather buy new Gregg shaft straightened local machine shop $400 Another tip check clearance nylon gear bearing support block side frames ala Helibaby Revolu tion see Fig Although spacer washer installed found wear pos sibly heat generated bearing caused spacer drawn partially nylon thus reducing clear ances As rpm lift approached lift-off point main rotor shaft gear pulled up against bearing block side frames additional friction reduced rpm point helicopter would barely continue hover same time torque increased much tail rotor could maintain heading Sound familiar correct problem insert additional spacers insure clear ance Remember friction/drag will de crease rpm increase torque hel icopter mechanical friction aerody namic drag due excessive rotor pitch will probably show up first tail rotor anti-torque rotor response Next month Ill go detail about helicopter set-up Meanwhile build some extra blades recheck align ments try again Rules have arrived time rules reward machine capability expense pilot capability perform pre cision maneuvers So some events ing run modifications take account witness following letter Norm Holland Helicopter Event Director Tangerine International Meet Dear Dave would appreciate receiving sup port column Tangerine Helicopter event year have pushed Tangerine planning commit tee two full days half days last year working hard make helicopter event perma nent portion annual meet takes participation As know Tangerine big meet two half days pattern half days Formula day stand-off scale two days helicopter total four days Helicopters will flown off site country club setting AMA maneuvers will flown AAA AMA meet however going modify expert free-style category want upgrade fly ing try open up types helicopters just two fully aerobatic models plans final writing plan limit se lected maneuvers six within four minutes will give time per form maneuver just try get quantity fly like drunk bumble 98 Model Aviation bee Also required make work adjustment K factors loop roll now almost common place therefore K factor once exotic maneuvers will lowered will allow less acrobatic Helos competitive precision flying other key point once flight plan chosen pilot must stick throughout meet did last year final scores very close would like thank ad vance support 79 TangerineNorman Holland Hel icopter Event Director Looks like Norms group putting gether great meet dates Decem ber 30 31 headquarters motel Red Carpet Inn Altamonte Springs Fla 1-305-862-5221 See contest list ings further details See next month Dave Chesney Rt 9 Box 621A Greensboro NC 27409 RC Oldtimers/Mathews continued page 29 Woody cautions would-be builder think light cut elevator rudder /2 sheet recommends built-up surfaces punching holes sheet Radio components should placed well forward Woody also used some wood size substitutions no spruce better carry loads stand ardize dimensions has done splendid job thinking out conversion grand old design modern use Woodrow Wilson 1423 Basilan Lane Houston TX 77058 Danny Sheelds has compiled collection antique ads photos booklet form puts size shape mys terious names appear oldtimer plans lists Containing nearly 80 pages layouts ads pictures gas jobs up Dec 1942 booklet costs $695 Danny Sheelds 3 Cinnamon Circle Apt lC Randalistown MD 21133 Danny also producing kits King Burd suitable 15cc 30cc power RC FF Perhaps interesting activity Oskosh just looking commercial exhibits flea markets display incredible variety interesting unusu al wares Among treasure trove Wag-Aero booth supplier several items used full scale aircraft construc tion maintainance also ap plicable modeling uses stock will ship clear nitrate dope nitrate dope plasticizedand nitrate thinner gal lons considerable saving over 8 oz cans source plasticized nitrate know reader knows source TCP small quantity use please share informa tion us Also listed free catalog tools polyurethane epoxy finishes Dacron yard goods tapes metals etc seeking ultimate jumbo scale kits Wag also produces parts packs needed pieces build Piper J-3 Wagobond Vagabond one-foot-tothe-foot scale Wag-Aero PO Box 181 Lyons WI 53148 presume model magazine has printed least photo Sal Taibis Anderson Pylon Just different Ive chosen photo engine mount friend Larry Kruse took Lake Charles Talk about innovative ideas unlikely models Forester 99 has always repu tation motor beams prone fracture destroying lower crankcase Sal has treated problem combining large cast-aluminum radial mount breakaway wood beams beams held metal screws running hor izontally motor bolted wood further protect motor landing gear motor mount ignition accessories fastened common unit turn held fuselage elas tics hooks similar ignition-power stick unit used old Berkeley American Ace Editors Note Struck used stick New Ruler American Ace scaled down idea first saw light day KG Kovel-Grant designed Charlie Grant published MAN used extended cantilever mount pro jected fuselage Have ever put last coat color finish find youve covered up painted over holds hardware mounting can no longer remember Turn off lights Frequently can locate holes shining flashlight interior shop lights turned off small pencell unit will help Ive fastened onto stick masking tape reach difficult access areas Once hole lo cated merely insert pin ref erence after lights back Although effective fabric film covered holes technique can also used locate engine mount holes under fiberglass tape Ed N4oorman Eglin AFB FL wife just returned visit dad El Paso piled 5 planes van flies too drove Florida Bombshell 5 El Paso RC field trimmed Buzzard higher altitude let Dad flown rubber models back 30s give try second flight doing great refused try landing third flight refused take transmitter back gave him verbal directions plan glide put right down runway both sitting lawn chairs time Ed wrote Hot Dog Flying article RCM enjoyed much says occasionally get tired watching pattern job haul out Buzzard relax can sit back prop feet up enjoy some low no pressure fun flying ends note inquiry about GHQ Sportster plans Ive sent him nearly 100 others copy SAM suppliers list feel Ed has succinctly put oldtimers attractions proper perspective Most us enjoy stately old gals attracted inherent recrea tional value challenge poking January 1979 99 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Support AMA Price $3995 GREATEST B/C BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themThe kit per SHALL WE SAY MORE Andrews Aircraft Model Co Inc US Ete t& North St Topsfield Mass 01983 887-8541dollar hue em all