HELICOPTERS Dave Chesney November column Tim Peters treated us Nats coverage photo Heliboy rotor head modification Tim wrote modifica tion based idea Bo Hinch developed Peyton Enloe eliminate problems collective pitch arms uccasionally work loose blade axles after crashes Since arms peened blade axles will change adjustment abused Eventually standard pitch arm/blade axle assemblies must replaced S WAS I-I P LATE BALL IiTHISHOLEDRILLED THRU9OTOCOLLECTIVE SLOT FOR 4-40 SOCKET HEAD SCREW AND NUT II 5mm SPACER OP BEARING COLLECTIVE PITCH IRE SPACER MOD SEE TEXT FILE NOTCH TO RECEIVE BB FAN OR As far know modification available Peyton Enloe 326 E March Drive Lafayette LA 70501 about $3000 ever similar modification presented us would like construct own mod Glenn Scillian Silver Spring MD Glenn having experienced problems described Tim Peters column immedi ately impressed Enloc mod dimensions Glenns drawing true size before bending pitch arm throw limiter shape found cheap source mild steel local lumber yard Seems material used holding rafters joists together micrometers hand found some sheet steel desired thickness blade axles machined ar stock drilled two 4-40 socket head hardened machine screws special screw blade pivot pivot screw should threaded area would touch blade holders axle axle secured within bearing block peening end overthe washer ball bearing original pitch arm sub assembly Critical dimensions diameters blade axles spacing matching holes axles pitch arms spacing holes limiter limiter fits side rotor head under 3-mm screws holding bearing blocks between head plates used prevent damage rotor head crashes limiting rotation blade axle see photo Several other items may notice photo Glenns Heliboy collective pitch yoke head side plates cyclic control rod follower None items need replaced take advantage modification described above Glenn also has tried Heliboy main gear modification made ring teeth almost identical top Heliboy main gear cemented groove turned out original nylon tail rotor drive teeth worked very noisy project temporarily shelved little further south Bob Lee Long Beach MS has tried modification may applied RC helicopters perhaps should considered prior beginning construc tion new chopper drills small hole shank engine shafts deep enough half Daisy BB BB zapped place hold filing notch fan effect fan keyed engine shaft keying COUNTERSINK HOLE IN ENGINE SHAFT TO ACCEPTo HALF OF BB I- THRUS~ WASHER TWO PINS \IIIyfTl 1 USE 2 1/8 PIANO WIRE PINS FROM FAN THRU THRUST FAN WASHER USE TEMPLATE TO DRILL BOTH FAN AND WASHER Bob Lees mod key fan engine shaft shaft fan manner Bob found fan would no longer slip after en gine backfire Bobs suggestion may practical some engines since crankshaft hardness configurations vary idea keying engine shaft fan seems like good idea since usually difficult retighten assembly quickly An alternative Bobs method has used friend retain spinner backplates cantankerous Max 80 should acceptable fan retention ever-faithful helicopter engines Since drilling required soft aluminum drill press should machinery requiredthe drawings should self-explana tory have yet fitted Heliboy latest modification kitthe including free-swinging main rotor blade retainers main gear retainer bearing Bob suggests kit modifications necessary spacer added below swash plate ball main shaft great improvement Hard landings can wipe out main gear tad rotor drive teeth main shaft driven down mod kit includes 5-mm brass spacer follower bearing below main gear reduce Continued page 105 604 -*-- -- 300 C #30 drill150 ___ 128B177533driII MATERIAL MILD STEEL 4004 ABLADEASLE PITCHRM1 C PITCH ARM THROW#3IdriII LIMITER120 -I 400 236d/7Feas.ILA 1 315d uII/FT\I 113#24driII ISO 152 100 45 Heliboy Pitch Arm Modificationby Glenn Scillian Axle machined 4 X bar stock drilled two 440 socket head hardened machine screws special screw blade pivot screw should have no threads area would touch blade holders axle Axle secured peening end over washer ball bearing supplied Limiter fits side rotor head near slot under heads two 3-mm screws holding bearing block Mafch 1980 29 1-selmoy prtcn arm mod Glenn Scillian detailed drawing text Scillian photo THE TRIPLE THREAT U RN AD MSIWS AJ33AUT IAOUL CO INC N 500 features multi-engines flaps retracts bomb drop Scores would lowered because considered flight operations Anyone has noted trim change during operations aware flight affected proposal rejected because would virtually replace whole present rules system developed over years world champion ships proposal US permit increase engine displacement lOcc61 15cc 91 single-engine planes rejected because increased motive power should restricted multi-engined models rule permit 15cc total twins became effective 1979 hoped follow same displacement single engine because reasoned models adequate power safer flight proposal originating Switzerland asked change ratio scoring between static flight present 5 0-50 57-43 favor flight omission craftsman ship points static scores proposal rejected originally written resubmitted change fidelity scoring side plan end views means model will viewed three-view drawing including top bottom views applicable Precision well Stand-off Scale models Judges will now see bottom plane done 1979 Nats Sport Scale complexity flight bonus system formerly applied Precision F4C Scale models will now applied also Stand-off Scale FAI competition flight schedule both classes same French delegate Jules Reggiore informed us judges Metz Stand-off Scale meet first viewed models three meters fidelity close-up crafts manship trend future meets Because Precision Stand-off now closely comparable quality US world wide committee members reasoned may eventually class type judging technique committee recommended earlier proposal clarification offlight bonus points accepted awards 5% bonus biplane 10% biplane under-cambered wings prototype model rather 10% two-bay biplane No bonus points awarded mono-wheel models retracts Complexity points awarded contestant reproduces feature modeL Bob Dolly Wischer RL 1 S-221 Laphani Peak Rd Delafiela WI 53018 RC Helicopters/Chesney continued page 29 probability Bob feels spacer suffi cient fix problem hardest landing spacer inserted below swash plate ball resting top main shaft bearing raises ball additional torque may applied ball set screw socket head screw nut through ball shaft may used replace set screw addi tional security Drill hole through shaft 900 pitch change slot spacer can made cutting 5 mm landing gear tubing Cut tubing squarely carefully avoid getting spacer Out round See drawing detail mod locks main shaft between bearing blocks raises ball appropriate position within swash plate finally Walt Schoonard sent copy set-up tape mentioned last month think begin ners will benefit particularly March 1980 105 QUIKRAY-500 hss en~eered meet need model could built fast very strong meet requirements AMA Sport Pylon Events Quicky 500 Pylon Racing Fun Fly Events around Sport Flying Trainer general Pattern Flying baby strong BuD bul lightandfast baby will turn Pylon tighter anything have seen will snap stali out. QUIICRAY-500 can built complete air Twelve Fifteen hours covered materials such SUPER MONOKOTE other covering same family U T AND QUIK ITS FULL OF TIGER EATING GRINS!! FAST IS WHAT SHE IS DOCILE Winpspan 50 Area 503 sq Engine 1945Weight 3 lbs Material AU Bales Ply needed p \ This AAmco Inc humbly say no Winning Ideas FOURMOST FUEL MANIFOLD FUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize 4 ID PRICE 125 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming tive Airborn Shutoff % IDPRICE 955PRICE 35O % AND 5 00STRUT FAIRINGS Comes two cOCkft23 Lengths Two Sizes % 10 geFuegS Packaged 2 Ft SizePRICE/S ze % 0PR CE 1 50 1 Tee 1 ElbowU P g PRICE 5195Ipkg2 lengths either size 225goc Made F Fo Send SASE Complete Information FUR~T 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 DEPENDABLE Friend GIL LaunchingOLD 1LAV THE NEW FIREBALL GLOW PLUGS ARE LEAKPROOF AND BLOWOUT PROOF EVEN FOR THE NEW MONSTER ENGINES BUT THEY ARE STILL THE OLD PRICE OF $1 10 dont need cell friend time WRITE NOW! get Control Line model air new remoteC5s7AlCf release SAFE LOC launcher Strong Safe Ready-togo anytimeyou arePO Box 151 STRONG Safety pull-tented et 125 lbs preseure Wayne NJ etrong enough largest CIL airplanes SAFE Has built-in lock prevent accidental release 0 IF NOTATYOUR DEALERORDER DIRECT e 495 ST CLAIR MODEL COMPONENTS P0 Box 5626 Pd USAEugene OR 97405 AEROBATIC AIRPLANES$1 00PeanutNo 7 IS SUPERB DRAWINGSIfCapt Pages BY ROBT C MORR SON 3395PLUSIICurtis XF6C-6 FTT ~-ATSCHMODERNISTIC MODELS SOit POSTAGE~ SI 00 ~ P 0 BOX 6974 ALBUQ NM 87197 Heliboy helicopters youre interested drop Walt line Hope present some modifications Kavan Jet Ranger Ray Hostetler next month See Dave Chesnev Rt 9 Box 62 LI Greensboro NC 27409 RC Soaring Pruss continued page 30 Anyone interested future events type should contact SBSSs competition chair man Brian Irvine 3379 St Marys Pt Santa Clara CA 95051 quiet aide slope flying District Columbia RC Club Allegheny County KC Club co-host annual Cumberland gettogether DCRC/ACRC Don Clark Bob Rigg Jim Dolly engineer years affair Any event has record often years continuous running worth mentioning Annually report main reason success yearly bash low-key atmos phere fact its contest above scenery good fellowship Some us flatlanders probably easy impress weve enjoying cameraderie landscape seven ten years hope lasts least ten planes Meyer Guttmans Jantar flew probably flown people quarter-scale beauty Wanichek Germany show-stopper during last summers LSF Tournament innards radio manufacturers delight Seven servos keep beauty alive Besides natural rudder elevator spoilers threefunction ship theres servo flaps two ailerons gear retraction Electronie ally coupled ailerons rudder commanded right stick however left stick overrides rudder different amounts can fed necessary Ned Smith showed up old Gerry Nelson designed KA-6 bird originally produced ten years ago slopes out California way probably about sailplane genera tion ahead its time least two similar models flying midwest logging some decent thermal duration flights itself isnt remarkable flights 11-pound sailplane wing loading 24 ounces per square foot gets few heads look up take notice all-glass ship sports NACA 6412 airfoil originally launched via ROG Smith proved 12-volt winch modest breeze bird can hand launched goes up like kite About ten years ago Dale Willoughby flew similar ship world speed record nearly 90 mph Designers ofF3B ships might find message specs So youre eager fly something different see something usually found local school yard circle date November 1 and2 1980 Theres another big two-day event sched uled no entry fee no rules no CD breathe down neck Just bring lunch Whatever-happened-t& department Carl Lorber designs got few people started game designs further kept few people competitive showed up Cumberland after few years resting Carl original editor East Coast Soaring Societys now NSS newsletter Sailplanst well Carl building board has cleared Newsletter Swap Guy Revel- Muroz Paris France edits newsletter Eale publica tion although French covers aspects RC Soaring just F3 B side newsletter usually contains airfoil data threeviews linkage sketches other drawings understandable language Guy has offered exchange newsletters idea printing some articles information taken newsletters receives sounds like worthwhile swap Have club newsletter editor send clubs newslet 106 Model Aviation Cumberlan. seems luuncnlng Hobie Hawk 30 degrees off coursejust erratic early day wind Valley direction normal slope conditions Just beautiful
Edition: Model Aviation - 1980/03
Page Numbers: 29, 105, 106
HELICOPTERS Dave Chesney November column Tim Peters treated us Nats coverage photo Heliboy rotor head modification Tim wrote modifica tion based idea Bo Hinch developed Peyton Enloe eliminate problems collective pitch arms uccasionally work loose blade axles after crashes Since arms peened blade axles will change adjustment abused Eventually standard pitch arm/blade axle assemblies must replaced S WAS I-I P LATE BALL IiTHISHOLEDRILLED THRU9OTOCOLLECTIVE SLOT FOR 4-40 SOCKET HEAD SCREW AND NUT II 5mm SPACER OP BEARING COLLECTIVE PITCH IRE SPACER MOD SEE TEXT FILE NOTCH TO RECEIVE BB FAN OR As far know modification available Peyton Enloe 326 E March Drive Lafayette LA 70501 about $3000 ever similar modification presented us would like construct own mod Glenn Scillian Silver Spring MD Glenn having experienced problems described Tim Peters column immedi ately impressed Enloc mod dimensions Glenns drawing true size before bending pitch arm throw limiter shape found cheap source mild steel local lumber yard Seems material used holding rafters joists together micrometers hand found some sheet steel desired thickness blade axles machined ar stock drilled two 4-40 socket head hardened machine screws special screw blade pivot pivot screw should threaded area would touch blade holders axle axle secured within bearing block peening end overthe washer ball bearing original pitch arm sub assembly Critical dimensions diameters blade axles spacing matching holes axles pitch arms spacing holes limiter limiter fits side rotor head under 3-mm screws holding bearing blocks between head plates used prevent damage rotor head crashes limiting rotation blade axle see photo Several other items may notice photo Glenns Heliboy collective pitch yoke head side plates cyclic control rod follower None items need replaced take advantage modification described above Glenn also has tried Heliboy main gear modification made ring teeth almost identical top Heliboy main gear cemented groove turned out original nylon tail rotor drive teeth worked very noisy project temporarily shelved little further south Bob Lee Long Beach MS has tried modification may applied RC helicopters perhaps should considered prior beginning construc tion new chopper drills small hole shank engine shafts deep enough half Daisy BB BB zapped place hold filing notch fan effect fan keyed engine shaft keying COUNTERSINK HOLE IN ENGINE SHAFT TO ACCEPTo HALF OF BB I- THRUS~ WASHER TWO PINS \IIIyfTl 1 USE 2 1/8 PIANO WIRE PINS FROM FAN THRU THRUST FAN WASHER USE TEMPLATE TO DRILL BOTH FAN AND WASHER Bob Lees mod key fan engine shaft shaft fan manner Bob found fan would no longer slip after en gine backfire Bobs suggestion may practical some engines since crankshaft hardness configurations vary idea keying engine shaft fan seems like good idea since usually difficult retighten assembly quickly An alternative Bobs method has used friend retain spinner backplates cantankerous Max 80 should acceptable fan retention ever-faithful helicopter engines Since drilling required soft aluminum drill press should machinery requiredthe drawings should self-explana tory have yet fitted Heliboy latest modification kitthe including free-swinging main rotor blade retainers main gear retainer bearing Bob suggests kit modifications necessary spacer added below swash plate ball main shaft great improvement Hard landings can wipe out main gear tad rotor drive teeth main shaft driven down mod kit includes 5-mm brass spacer follower bearing below main gear reduce Continued page 105 604 -*-- -- 300 C #30 drill150 ___ 128B177533driII MATERIAL MILD STEEL 4004 ABLADEASLE PITCHRM1 C PITCH ARM THROW#3IdriII LIMITER120 -I 400 236d/7Feas.ILA 1 315d uII/FT\I 113#24driII ISO 152 100 45 Heliboy Pitch Arm Modificationby Glenn Scillian Axle machined 4 X bar stock drilled two 440 socket head hardened machine screws special screw blade pivot screw should have no threads area would touch blade holders axle Axle secured peening end over washer ball bearing supplied Limiter fits side rotor head near slot under heads two 3-mm screws holding bearing block Mafch 1980 29 1-selmoy prtcn arm mod Glenn Scillian detailed drawing text Scillian photo THE TRIPLE THREAT U RN AD MSIWS AJ33AUT IAOUL CO INC N 500 features multi-engines flaps retracts bomb drop Scores would lowered because considered flight operations Anyone has noted trim change during operations aware flight affected proposal rejected because would virtually replace whole present rules system developed over years world champion ships proposal US permit increase engine displacement lOcc61 15cc 91 single-engine planes rejected because increased motive power should restricted multi-engined models rule permit 15cc total twins became effective 1979 hoped follow same displacement single engine because reasoned models adequate power safer flight proposal originating Switzerland asked change ratio scoring between static flight present 5 0-50 57-43 favor flight omission craftsman ship points static scores proposal rejected originally written resubmitted change fidelity scoring side plan end views means model will viewed three-view drawing including top bottom views applicable Precision well Stand-off Scale models Judges will now see bottom plane done 1979 Nats Sport Scale complexity flight bonus system formerly applied Precision F4C Scale models will now applied also Stand-off Scale FAI competition flight schedule both classes same French delegate Jules Reggiore informed us judges Metz Stand-off Scale meet first viewed models three meters fidelity close-up crafts manship trend future meets Because Precision Stand-off now closely comparable quality US world wide committee members reasoned may eventually class type judging technique committee recommended earlier proposal clarification offlight bonus points accepted awards 5% bonus biplane 10% biplane under-cambered wings prototype model rather 10% two-bay biplane No bonus points awarded mono-wheel models retracts Complexity points awarded contestant reproduces feature modeL Bob Dolly Wischer RL 1 S-221 Laphani Peak Rd Delafiela WI 53018 RC Helicopters/Chesney continued page 29 probability Bob feels spacer suffi cient fix problem hardest landing spacer inserted below swash plate ball resting top main shaft bearing raises ball additional torque may applied ball set screw socket head screw nut through ball shaft may used replace set screw addi tional security Drill hole through shaft 900 pitch change slot spacer can made cutting 5 mm landing gear tubing Cut tubing squarely carefully avoid getting spacer Out round See drawing detail mod locks main shaft between bearing blocks raises ball appropriate position within swash plate finally Walt Schoonard sent copy set-up tape mentioned last month think begin ners will benefit particularly March 1980 105 QUIKRAY-500 hss en~eered meet need model could built fast very strong meet requirements AMA Sport Pylon Events Quicky 500 Pylon Racing Fun Fly Events around Sport Flying Trainer general Pattern Flying baby strong BuD bul lightandfast baby will turn Pylon tighter anything have seen will snap stali out. QUIICRAY-500 can built complete air Twelve Fifteen hours covered materials such SUPER MONOKOTE other covering same family U T AND QUIK ITS FULL OF TIGER EATING GRINS!! FAST IS WHAT SHE IS DOCILE Winpspan 50 Area 503 sq Engine 1945Weight 3 lbs Material AU Bales Ply needed p \ This AAmco Inc humbly say no Winning Ideas FOURMOST FUEL MANIFOLD FUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize 4 ID PRICE 125 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming tive Airborn Shutoff % IDPRICE 955PRICE 35O % AND 5 00STRUT FAIRINGS Comes two cOCkft23 Lengths Two Sizes % 10 geFuegS Packaged 2 Ft SizePRICE/S ze % 0PR CE 1 50 1 Tee 1 ElbowU P g PRICE 5195Ipkg2 lengths either size 225goc Made F Fo Send SASE Complete Information FUR~T 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 DEPENDABLE Friend GIL LaunchingOLD 1LAV THE NEW FIREBALL GLOW PLUGS ARE LEAKPROOF AND BLOWOUT PROOF EVEN FOR THE NEW MONSTER ENGINES BUT THEY ARE STILL THE OLD PRICE OF $1 10 dont need cell friend time WRITE NOW! get Control Line model air new remoteC5s7AlCf release SAFE LOC launcher Strong Safe Ready-togo anytimeyou arePO Box 151 STRONG Safety pull-tented et 125 lbs preseure Wayne NJ etrong enough largest CIL airplanes SAFE Has built-in lock prevent accidental release 0 IF NOTATYOUR DEALERORDER DIRECT e 495 ST CLAIR MODEL COMPONENTS P0 Box 5626 Pd USAEugene OR 97405 AEROBATIC AIRPLANES$1 00PeanutNo 7 IS SUPERB DRAWINGSIfCapt Pages BY ROBT C MORR SON 3395PLUSIICurtis XF6C-6 FTT ~-ATSCHMODERNISTIC MODELS SOit POSTAGE~ SI 00 ~ P 0 BOX 6974 ALBUQ NM 87197 Heliboy helicopters youre interested drop Walt line Hope present some modifications Kavan Jet Ranger Ray Hostetler next month See Dave Chesnev Rt 9 Box 62 LI Greensboro NC 27409 RC Soaring Pruss continued page 30 Anyone interested future events type should contact SBSSs competition chair man Brian Irvine 3379 St Marys Pt Santa Clara CA 95051 quiet aide slope flying District Columbia RC Club Allegheny County KC Club co-host annual Cumberland gettogether DCRC/ACRC Don Clark Bob Rigg Jim Dolly engineer years affair Any event has record often years continuous running worth mentioning Annually report main reason success yearly bash low-key atmos phere fact its contest above scenery good fellowship Some us flatlanders probably easy impress weve enjoying cameraderie landscape seven ten years hope lasts least ten planes Meyer Guttmans Jantar flew probably flown people quarter-scale beauty Wanichek Germany show-stopper during last summers LSF Tournament innards radio manufacturers delight Seven servos keep beauty alive Besides natural rudder elevator spoilers threefunction ship theres servo flaps two ailerons gear retraction Electronie ally coupled ailerons rudder commanded right stick however left stick overrides rudder different amounts can fed necessary Ned Smith showed up old Gerry Nelson designed KA-6 bird originally produced ten years ago slopes out California way probably about sailplane genera tion ahead its time least two similar models flying midwest logging some decent thermal duration flights itself isnt remarkable flights 11-pound sailplane wing loading 24 ounces per square foot gets few heads look up take notice all-glass ship sports NACA 6412 airfoil originally launched via ROG Smith proved 12-volt winch modest breeze bird can hand launched goes up like kite About ten years ago Dale Willoughby flew similar ship world speed record nearly 90 mph Designers ofF3B ships might find message specs So youre eager fly something different see something usually found local school yard circle date November 1 and2 1980 Theres another big two-day event sched uled no entry fee no rules no CD breathe down neck Just bring lunch Whatever-happened-t& department Carl Lorber designs got few people started game designs further kept few people competitive showed up Cumberland after few years resting Carl original editor East Coast Soaring Societys now NSS newsletter Sailplanst well Carl building board has cleared Newsletter Swap Guy Revel- Muroz Paris France edits newsletter Eale publica tion although French covers aspects RC Soaring just F3 B side newsletter usually contains airfoil data threeviews linkage sketches other drawings understandable language Guy has offered exchange newsletters idea printing some articles information taken newsletters receives sounds like worthwhile swap Have club newsletter editor send clubs newslet 106 Model Aviation Cumberlan. seems luuncnlng Hobie Hawk 30 degrees off coursejust erratic early day wind Valley direction normal slope conditions Just beautiful
Edition: Model Aviation - 1980/03
Page Numbers: 29, 105, 106
HELICOPTERS Dave Chesney November column Tim Peters treated us Nats coverage photo Heliboy rotor head modification Tim wrote modifica tion based idea Bo Hinch developed Peyton Enloe eliminate problems collective pitch arms uccasionally work loose blade axles after crashes Since arms peened blade axles will change adjustment abused Eventually standard pitch arm/blade axle assemblies must replaced S WAS I-I P LATE BALL IiTHISHOLEDRILLED THRU9OTOCOLLECTIVE SLOT FOR 4-40 SOCKET HEAD SCREW AND NUT II 5mm SPACER OP BEARING COLLECTIVE PITCH IRE SPACER MOD SEE TEXT FILE NOTCH TO RECEIVE BB FAN OR As far know modification available Peyton Enloe 326 E March Drive Lafayette LA 70501 about $3000 ever similar modification presented us would like construct own mod Glenn Scillian Silver Spring MD Glenn having experienced problems described Tim Peters column immedi ately impressed Enloc mod dimensions Glenns drawing true size before bending pitch arm throw limiter shape found cheap source mild steel local lumber yard Seems material used holding rafters joists together micrometers hand found some sheet steel desired thickness blade axles machined ar stock drilled two 4-40 socket head hardened machine screws special screw blade pivot pivot screw should threaded area would touch blade holders axle axle secured within bearing block peening end overthe washer ball bearing original pitch arm sub assembly Critical dimensions diameters blade axles spacing matching holes axles pitch arms spacing holes limiter limiter fits side rotor head under 3-mm screws holding bearing blocks between head plates used prevent damage rotor head crashes limiting rotation blade axle see photo Several other items may notice photo Glenns Heliboy collective pitch yoke head side plates cyclic control rod follower None items need replaced take advantage modification described above Glenn also has tried Heliboy main gear modification made ring teeth almost identical top Heliboy main gear cemented groove turned out original nylon tail rotor drive teeth worked very noisy project temporarily shelved little further south Bob Lee Long Beach MS has tried modification may applied RC helicopters perhaps should considered prior beginning construc tion new chopper drills small hole shank engine shafts deep enough half Daisy BB BB zapped place hold filing notch fan effect fan keyed engine shaft keying COUNTERSINK HOLE IN ENGINE SHAFT TO ACCEPTo HALF OF BB I- THRUS~ WASHER TWO PINS \IIIyfTl 1 USE 2 1/8 PIANO WIRE PINS FROM FAN THRU THRUST FAN WASHER USE TEMPLATE TO DRILL BOTH FAN AND WASHER Bob Lees mod key fan engine shaft shaft fan manner Bob found fan would no longer slip after en gine backfire Bobs suggestion may practical some engines since crankshaft hardness configurations vary idea keying engine shaft fan seems like good idea since usually difficult retighten assembly quickly An alternative Bobs method has used friend retain spinner backplates cantankerous Max 80 should acceptable fan retention ever-faithful helicopter engines Since drilling required soft aluminum drill press should machinery requiredthe drawings should self-explana tory have yet fitted Heliboy latest modification kitthe including free-swinging main rotor blade retainers main gear retainer bearing Bob suggests kit modifications necessary spacer added below swash plate ball main shaft great improvement Hard landings can wipe out main gear tad rotor drive teeth main shaft driven down mod kit includes 5-mm brass spacer follower bearing below main gear reduce Continued page 105 604 -*-- -- 300 C #30 drill150 ___ 128B177533driII MATERIAL MILD STEEL 4004 ABLADEASLE PITCHRM1 C PITCH ARM THROW#3IdriII LIMITER120 -I 400 236d/7Feas.ILA 1 315d uII/FT\I 113#24driII ISO 152 100 45 Heliboy Pitch Arm Modificationby Glenn Scillian Axle machined 4 X bar stock drilled two 440 socket head hardened machine screws special screw blade pivot screw should have no threads area would touch blade holders axle Axle secured peening end over washer ball bearing supplied Limiter fits side rotor head near slot under heads two 3-mm screws holding bearing block Mafch 1980 29 1-selmoy prtcn arm mod Glenn Scillian detailed drawing text Scillian photo THE TRIPLE THREAT U RN AD MSIWS AJ33AUT IAOUL CO INC N 500 features multi-engines flaps retracts bomb drop Scores would lowered because considered flight operations Anyone has noted trim change during operations aware flight affected proposal rejected because would virtually replace whole present rules system developed over years world champion ships proposal US permit increase engine displacement lOcc61 15cc 91 single-engine planes rejected because increased motive power should restricted multi-engined models rule permit 15cc total twins became effective 1979 hoped follow same displacement single engine because reasoned models adequate power safer flight proposal originating Switzerland asked change ratio scoring between static flight present 5 0-50 57-43 favor flight omission craftsman ship points static scores proposal rejected originally written resubmitted change fidelity scoring side plan end views means model will viewed three-view drawing including top bottom views applicable Precision well Stand-off Scale models Judges will now see bottom plane done 1979 Nats Sport Scale complexity flight bonus system formerly applied Precision F4C Scale models will now applied also Stand-off Scale FAI competition flight schedule both classes same French delegate Jules Reggiore informed us judges Metz Stand-off Scale meet first viewed models three meters fidelity close-up crafts manship trend future meets Because Precision Stand-off now closely comparable quality US world wide committee members reasoned may eventually class type judging technique committee recommended earlier proposal clarification offlight bonus points accepted awards 5% bonus biplane 10% biplane under-cambered wings prototype model rather 10% two-bay biplane No bonus points awarded mono-wheel models retracts Complexity points awarded contestant reproduces feature modeL Bob Dolly Wischer RL 1 S-221 Laphani Peak Rd Delafiela WI 53018 RC Helicopters/Chesney continued page 29 probability Bob feels spacer suffi cient fix problem hardest landing spacer inserted below swash plate ball resting top main shaft bearing raises ball additional torque may applied ball set screw socket head screw nut through ball shaft may used replace set screw addi tional security Drill hole through shaft 900 pitch change slot spacer can made cutting 5 mm landing gear tubing Cut tubing squarely carefully avoid getting spacer Out round See drawing detail mod locks main shaft between bearing blocks raises ball appropriate position within swash plate finally Walt Schoonard sent copy set-up tape mentioned last month think begin ners will benefit particularly March 1980 105 QUIKRAY-500 hss en~eered meet need model could built fast very strong meet requirements AMA Sport Pylon Events Quicky 500 Pylon Racing Fun Fly Events around Sport Flying Trainer general Pattern Flying baby strong BuD bul lightandfast baby will turn Pylon tighter anything have seen will snap stali out. QUIICRAY-500 can built complete air Twelve Fifteen hours covered materials such SUPER MONOKOTE other covering same family U T AND QUIK ITS FULL OF TIGER EATING GRINS!! FAST IS WHAT SHE IS DOCILE Winpspan 50 Area 503 sq Engine 1945Weight 3 lbs Material AU Bales Ply needed p \ This AAmco Inc humbly say no Winning Ideas FOURMOST FUEL MANIFOLD FUEL SHUT OFFSmall Fuel Fitting Set Manifold Provides ConvenientCan Used Control FuelSize 4 ID PRICE 125 Method Tank Filling Draining andFlow Starting1 Tee 2 Elbows 1 Pen Bladder Tee Priming tive Airborn Shutoff % IDPRICE 955PRICE 35O % AND 5 00STRUT FAIRINGS Comes two cOCkft23 Lengths Two Sizes % 10 geFuegS Packaged 2 Ft SizePRICE/S ze % 0PR CE 1 50 1 Tee 1 ElbowU P g PRICE 5195Ipkg2 lengths either size 225goc Made F Fo Send SASE Complete Information FUR~T 4040 24th Ave Forest Grove OR 97116 PRODUCTS Phone 503 357-2732 DEPENDABLE Friend GIL LaunchingOLD 1LAV THE NEW FIREBALL GLOW PLUGS ARE LEAKPROOF AND BLOWOUT PROOF EVEN FOR THE NEW MONSTER ENGINES BUT THEY ARE STILL THE OLD PRICE OF $1 10 dont need cell friend time WRITE NOW! get Control Line model air new remoteC5s7AlCf release SAFE LOC launcher Strong Safe Ready-togo anytimeyou arePO Box 151 STRONG Safety pull-tented et 125 lbs preseure Wayne NJ etrong enough largest CIL airplanes SAFE Has built-in lock prevent accidental release 0 IF NOTATYOUR DEALERORDER DIRECT e 495 ST CLAIR MODEL COMPONENTS P0 Box 5626 Pd USAEugene OR 97405 AEROBATIC AIRPLANES$1 00PeanutNo 7 IS SUPERB DRAWINGSIfCapt Pages BY ROBT C MORR SON 3395PLUSIICurtis XF6C-6 FTT ~-ATSCHMODERNISTIC MODELS SOit POSTAGE~ SI 00 ~ P 0 BOX 6974 ALBUQ NM 87197 Heliboy helicopters youre interested drop Walt line Hope present some modifications Kavan Jet Ranger Ray Hostetler next month See Dave Chesnev Rt 9 Box 62 LI Greensboro NC 27409 RC Soaring Pruss continued page 30 Anyone interested future events type should contact SBSSs competition chair man Brian Irvine 3379 St Marys Pt Santa Clara CA 95051 quiet aide slope flying District Columbia RC Club Allegheny County KC Club co-host annual Cumberland gettogether DCRC/ACRC Don Clark Bob Rigg Jim Dolly engineer years affair Any event has record often years continuous running worth mentioning Annually report main reason success yearly bash low-key atmos phere fact its contest above scenery good fellowship Some us flatlanders probably easy impress weve enjoying cameraderie landscape seven ten years hope lasts least ten planes Meyer Guttmans Jantar flew probably flown people quarter-scale beauty Wanichek Germany show-stopper during last summers LSF Tournament innards radio manufacturers delight Seven servos keep beauty alive Besides natural rudder elevator spoilers threefunction ship theres servo flaps two ailerons gear retraction Electronie ally coupled ailerons rudder commanded right stick however left stick overrides rudder different amounts can fed necessary Ned Smith showed up old Gerry Nelson designed KA-6 bird originally produced ten years ago slopes out California way probably about sailplane genera tion ahead its time least two similar models flying midwest logging some decent thermal duration flights itself isnt remarkable flights 11-pound sailplane wing loading 24 ounces per square foot gets few heads look up take notice all-glass ship sports NACA 6412 airfoil originally launched via ROG Smith proved 12-volt winch modest breeze bird can hand launched goes up like kite About ten years ago Dale Willoughby flew similar ship world speed record nearly 90 mph Designers ofF3B ships might find message specs So youre eager fly something different see something usually found local school yard circle date November 1 and2 1980 Theres another big two-day event sched uled no entry fee no rules no CD breathe down neck Just bring lunch Whatever-happened-t& department Carl Lorber designs got few people started game designs further kept few people competitive showed up Cumberland after few years resting Carl original editor East Coast Soaring Societys now NSS newsletter Sailplanst well Carl building board has cleared Newsletter Swap Guy Revel- Muroz Paris France edits newsletter Eale publica tion although French covers aspects RC Soaring just F3 B side newsletter usually contains airfoil data threeviews linkage sketches other drawings understandable language Guy has offered exchange newsletters idea printing some articles information taken newsletters receives sounds like worthwhile swap Have club newsletter editor send clubs newslet 106 Model Aviation Cumberlan. seems luuncnlng Hobie Hawk 30 degrees off coursejust erratic early day wind Valley direction normal slope conditions Just beautiful