Radio Control HEL IC OP TERS Larry Jolly SAFETY preceding article said would compile list mandates necessary safe RC Helicopter operation fol lowing results shop Check Helicopter loose screws nuts Always use locknuts dont have nylon seals nuts have nylon seals always make sure screw threads extend past seal least two threads Periodically check ball links see worn out Check radio equipment loose wiring sloppy gears worn output arms Make sure receiver battery good shape up job intended Four five servos under load can really drag pack down hurry Check fuel system leaks detached clunk fuel tank Always use fuel filter check plugged up debris field Prior flight check controls move right direction really important especially new ra dios have servo-reversing inverted-flight switch Make certain control rods attached some machines necessary remove links fold rotor blades transportation Before start ing motor make sure radio switched fuel tank full Make sure hold rotor head se curely starting engine certain can kill engine full-aft throttle trim During flight Always carry Heli copter starting area flight area Prior actual liftoff accelerate rotor speed will let machine lift off yet will still allow some control event wind gust Allow ma chine spin-up least minute Continued page 145 Playboys tail feathers L Note wire tail bumpersaves dings tip fin business end Playboy R things note Bell-Hiller head anti-rotation link equalizer fiberglass seesaw independent blade flapping 54 Model Aviation Larry reviews Ishimasa Playboy chopper month used new Futaba Hell-radio OS Max 28 FSR-H engine liked Lots Info column have nice neighborsand quiet machineyou can make test hops right doorstep Larry says Playboy quite gentle hover yet aggressive aerobatics TOLEDOI84THIRTIETH ANNUAL RIO EXPOSITIONIU Reserve April 6 7 81984TOLEDO SPORTS ARENA attend worlds greatestONE MAIN STREET radio control model show WeTOLEDO OHIO featuring worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely ~nished models display enter competition excit ing awards Competition models will accepted during show hours till 10 am Sunday morning no entry fee Complete nc systems will presented first second third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days APRIL 67& 8 FRIDAY 9am SATURDAY 9am6pm SUNDAY 9am 430pm Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 units penultimate available concept reed receiver/transmitter series modulated audio tones vi brated metal strip causing close onto switch turn activated relay turn passed current servo sounds complexit tone such 500 cycles per second emited transmitter pilot activated several switches buttons picked up receiver used vibrate reed Thus tone eventually moved servo direction such Up elevator return surface neutral released transmitter button switch Another switch could pushed generate another tone would activate another control function such Down ele vator other words 10-channel unit capable moving five surfaces two directions until 1960 equipment capable generating tone time became available system referred Simul reader has never seen reed multi-channel flown preceeding likely conjures up visions very herky jerky flying Such case accomplished fliers became adept flicking switches flying closely resembled todays proportional equipment however con siderable accomplishment very early reed equipment Rockwood Schmidt others used control box rather buttons however didnt prove popular Control boxes scalelike sticks also available single-channel fliers simplify flying cas caded compound escapements illustrated past column have cluded some photos Ectron controller provided us reader As era complex enough what single channel compound es capements galloping ghost kicking duck reeds forth Good Worth Don Brown others also flying primitive proportional rigs early Quadraplex Space Control proportional equipment sale 1959 yet multi reed equipment sold well commonly used equipment well mid Sixties ever proportional did catch reed equipment disappeared almost over night Corporal Klingers home town Toledo OH will scene SAM Champs 84 mid-June date has selected likely produce cooler weather lighter winds traditional July dates site former Toledo Municipal airport full-scale aviation activity will suspended three-day Champs Concrete runways well-maintained grass areas should make motorbike retrieval possible Free Flighters Access via 1-75 Ohio Turnpike interchange Quality Semco Mufflers Tuned Pipe Adapter Super Expansion FAI Competition Vertical Down Exhaust PiUs Pitts Jr Super Flo Thru Exhaust Manifolds 215 457-3120 area full motels Although head quarters motel yet unnamed will scene MECA Collecto tra ditional first evening bean feed awards banquet SAM Champs much social hap pening contest shaping up best ever Carl Spielmaker will serve general CD Tom McCoy Buck Zaire charge RC Anyone knows three rascals aware fun bring activity Free Flight director has named writing Watch column Clarence Haughts detailsbut dont let pack wild horses keep attending Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Helicopters/Jolly Continued paqe 54 one-minute period will allow check rate switches trims proper positions Also will able check noticeable vibration During warm-up period engine will come up operating temperature open throttle actual liftoff will able check carburetor properly ad justed good idle Continued page 148 ~blyand Double Value Ideal caddy workbench setting checking wing stab incidence Rgular$4998 1/4 Scale$3495 Balancing Posts5595 Dealer Inquiries Welcome 125 Manor Ave S emco Oaklyn NJ 08107 January 1984 145 ronaere power glow plugs 55 shirt pocket Usiog HeadlockTM adapte, allows stoy plog ond get propeller Rechargeable op 1000 tiwes SO day warranty No wore bulky botterieo nobles Order NISTARTER either 110 220 12 colt fost charger lestroctioce included Aloe available charger See dealer order direct frow us Visa & Mastercard accepted Please specify type charger Add $160 postage USA NIHI 1 uS c. 02165 NIlILlE 226 . t21g5 NIlILlA 120 adep. $21 65NI-HL1-NC No charger t120S 12721 Haskell La Bowie MD 20716 100114642260 inEEEmEThe hinge allows control surface removal tools lost pins problems PATENT PENDINGcovering liiipainting repair transportation storage etc Scale Appearance InsertSimple Assembly 3 SIZES No Slots No Pins o Rotate 90 3#86 $445 12-6- $495 RC Helicopters/Jolly Continued page 145 everything checked appears normal liftoff low hover just out ground effect Check machine trimmed hover plenty exhaust smoke Having needle just little fat gives safety margin ensures against engine burn-down everything looks like go blast off enjoy yourself following simple steps should able keep Helicopter safe accident due haste neglect what about safety aspects respect pilots spectators fol lowing safety rules should adhered rigidly Never break see some abusing remind him dire consequences being hit flying buzz saw Never hold touch Helicopter has rotors turning Never fly over pits another Heli copter pilot Never fly Helicopter shaking vibrating Never fly Helicopter glitching land immediately before something bad happens Never fly 80% abilities demonstrating machine uncomfortable executing maneuver probably flying past pro ficiency Go home practice until confident executing particular maneu ver learning new maneuver pre pared execute out maneu ver learning fly nose-in concerned about machine facing results get confused lose heading Before ever attempted maneuver decided emergency out would hard tail rotor either direc tion tail came around towards full forward cyclic Once forward flight could regain composure get things sorted out Never fly yourself struck flying machine might unable go help Always follow field rules procedures Never allow yourself get position would endanger bystander think before fly basic flight rules have compiled through observation past per sonal experience have crashed wit nessed other crashes could either have prevented could possibly have resulted catastrophic bodily damage dont think anyone would consider touching flying Helicopter witnessed bloody damage can caused spin ning rotor blade Just recently club field two friends tuning engine Baron 20 hold skid machine elevated above heads run engine full throttle ad justed needle valve As throttled back hot globule oil struck face immediately released ma chine rolled over rotor blades struck other fellow fore head very lucky Since rotor spinning down didnt possess enough energy take friends head off ever nasty gash across forehead enough show us potential getting hit smallest Helicopter Remember guys can have lot fun flying RC Helicoptersbut theyre too enjoyable have flying hospital bed Think before push throttle ward fly safely Helicopter review Playboy new 25-size machine manufactured Ishimasa Japan marketed US Con dor Hobbies inexpensive chopper really impressive features collective pitch Bell-Hiller rotor control fiberglass see-saw dampener limits toothed tail-rotor drive belt Apparently optional auto-rotation clutch will soon offered rotor diameter 405 length minus rotor-head 385 Playboy requires 4 5 servos control meant powered 25- 30-size Schnuerle 40-size sport engine Continued page 152 DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP5 DEALER DISTRIBUTOR INQUIRItS INVITED WS 54 20- 35 ENGINEs 3 CHANNEL ThE BEGINNERS KIlTEN AND EXPERTS TIGER Revolutionary snap wing eliminates bolts robber bands Complete kit $5455 dealer direct GEMINI MODELS INC P0 Boo t tBB Pasoarc NJ 07055 Hobby Swap News THE MODEL ENTHUSIAST USED EQUIPMENT GUIDE Boy other modelero nave 50% morel used equipment bargains other publication tree ad onmen new Nubooiption Cs0 & ore, Z 1 0 3d CloSe 010 101 CIOON $13 oeaenscorsoo 0003 Cr10 000 00 Hobby Near News ben PO no moan San Orego CA oaaa-onan ModellersFREEI IiCataIo I~SOXTOCh IFROMI MicroMark I-The Small Tool SpecialistsI I6II unofredootonuoajalfeofsb errowedfr omfl oeJe welryIGo nsowittoingCl eekMa kingan dpr ofessionalMo delMa kingIt r adesNO WAV AILABLETO YO UBY MA ILlOfl%go ortonteedI II 12001400 & 2000 MIL GIDif SCALE NICID AM. Pack FENIUNES o completely assembled connector choice o factory fresh cells built specifications SAFT AMERICA o vibration proof construction 4 point weld between cells o hi-rate charge capability charge 480 mil rate continuous cell damage o each pack completely cycled prior shipment o available flat square stick configuration unique battery compartments weight/balance considerations4 o extra long leads available special applications 0 custom designs dual airborne back-up systems o hi-rate UL approved charger available-charge rate 120 mil1I o individual cells solder tabs 12 14 20 Ah ca~acities o 1200 1400 airbome packs weigh 72 oz complete o 2000 airborne packs weigh only-i 15 oz completeAEe a2and14Ah 1200 & 1400 2000 Auai&tLts packselectric bost See Local Hobby Shop Dealer firstSEND $100 FOR COMPLETE CATALOG OF ALL BATTERY SYSTEMS AND OTHER PRODUCTS AVAILABLE FROM GLR/C Great E4IUUL15 Edb IAiFi UIIC REFUNDABLE ON FIRST ORDER LIt/Es 18701 Southamptom Livonia Ml 48152 [1 MFGRS & DISTRIBUTORS OIJALITY RIC PRODUCTS & COMPONENTS RC Helicopters/Jolly Continued page 148 Playboy arrived multi-hued box illustrations showing Helicopter best advantage kit well-packaged definitely up highest standards nothing damaged missing Before started assembly checked through struction manuals plan sheet point became little confused little patience figured out what going Originally Playboy marketed fixed-pitch machine full-size drawing variant two instruction manuals Japanese manuals basic Helicopter construction other collective-pitch version also two manuals course English translations minus pictures Japanese manuals instructions necessary Just keep open mind will find Actually Playboy very logically constructed can built anyone average mechanical skills built ac cording manuals powered OS Max 28 FSR-H Helicopter glow en gine control installed new Futaba FG-H Helicopter radio S-28 servos entire package functions superbly Playboy great fun fly Bell Hiller head allows smooth hovering high rate selected transmitter very aerobatic feel Playboy unlike small Heliboyit really grooves considering small Helicopter maybe should try Playboy ink youll very satisfied Until next month remember tail boom shakes rotor head out landing gear shakes engine-fan combination out BCNU Lorry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued vaqe 55 tice can quite well Another ap proach audio tachometers see Rich Porters Musical Tach January 1981 MA RMcM always just did lot flying dif ferent props too much prop en gine will run hotjust kind lug around field may go lean too much heat other hand prop enough will get lot rpm will go anyplace So start ask Most have racing have pretty good idea what rpm look plane ground Lets call static rpm Q500 no muffler 15% nitro fuel competitive engines look 16000 17500 rpm Quarter Midget20000 23000 rpm Formula One20000 23000 rpm OK lets go back Q500 As said rules areas dont allow prop modificationsexcept balance So through trial error can come up right rpm whats say five propsall same diameter pitchand turned different rpms Now what Well no two props same variable thing wood So come close Lets look some very basic things important good prop 1 Try select having good straight grain no knots 2 Flex proptry get stiffest wood 3 Check balancea prop too far out balance usually requires too much work blade making uneven airfoils 4 Check pitch both bladesthis will require pitch guage use manufac tured Prather Products very important select prop has same pitch both blades check ing pitch several props will find out prop runs different rpm Remember best prop will close same pitch blade can get Since can alter blade bal ancing can using flat file heavy blade also alter pitch slightly try match rhe other blade Whatever goal come up 152 Model Aviation
Edition: Model Aviation - 1984/01
Page Numbers: 54, 145, 148, 152
Radio Control HEL IC OP TERS Larry Jolly SAFETY preceding article said would compile list mandates necessary safe RC Helicopter operation fol lowing results shop Check Helicopter loose screws nuts Always use locknuts dont have nylon seals nuts have nylon seals always make sure screw threads extend past seal least two threads Periodically check ball links see worn out Check radio equipment loose wiring sloppy gears worn output arms Make sure receiver battery good shape up job intended Four five servos under load can really drag pack down hurry Check fuel system leaks detached clunk fuel tank Always use fuel filter check plugged up debris field Prior flight check controls move right direction really important especially new ra dios have servo-reversing inverted-flight switch Make certain control rods attached some machines necessary remove links fold rotor blades transportation Before start ing motor make sure radio switched fuel tank full Make sure hold rotor head se curely starting engine certain can kill engine full-aft throttle trim During flight Always carry Heli copter starting area flight area Prior actual liftoff accelerate rotor speed will let machine lift off yet will still allow some control event wind gust Allow ma chine spin-up least minute Continued page 145 Playboys tail feathers L Note wire tail bumpersaves dings tip fin business end Playboy R things note Bell-Hiller head anti-rotation link equalizer fiberglass seesaw independent blade flapping 54 Model Aviation Larry reviews Ishimasa Playboy chopper month used new Futaba Hell-radio OS Max 28 FSR-H engine liked Lots Info column have nice neighborsand quiet machineyou can make test hops right doorstep Larry says Playboy quite gentle hover yet aggressive aerobatics TOLEDOI84THIRTIETH ANNUAL RIO EXPOSITIONIU Reserve April 6 7 81984TOLEDO SPORTS ARENA attend worlds greatestONE MAIN STREET radio control model show WeTOLEDO OHIO featuring worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely ~nished models display enter competition excit ing awards Competition models will accepted during show hours till 10 am Sunday morning no entry fee Complete nc systems will presented first second third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days APRIL 67& 8 FRIDAY 9am SATURDAY 9am6pm SUNDAY 9am 430pm Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 units penultimate available concept reed receiver/transmitter series modulated audio tones vi brated metal strip causing close onto switch turn activated relay turn passed current servo sounds complexit tone such 500 cycles per second emited transmitter pilot activated several switches buttons picked up receiver used vibrate reed Thus tone eventually moved servo direction such Up elevator return surface neutral released transmitter button switch Another switch could pushed generate another tone would activate another control function such Down ele vator other words 10-channel unit capable moving five surfaces two directions until 1960 equipment capable generating tone time became available system referred Simul reader has never seen reed multi-channel flown preceeding likely conjures up visions very herky jerky flying Such case accomplished fliers became adept flicking switches flying closely resembled todays proportional equipment however con siderable accomplishment very early reed equipment Rockwood Schmidt others used control box rather buttons however didnt prove popular Control boxes scalelike sticks also available single-channel fliers simplify flying cas caded compound escapements illustrated past column have cluded some photos Ectron controller provided us reader As era complex enough what single channel compound es capements galloping ghost kicking duck reeds forth Good Worth Don Brown others also flying primitive proportional rigs early Quadraplex Space Control proportional equipment sale 1959 yet multi reed equipment sold well commonly used equipment well mid Sixties ever proportional did catch reed equipment disappeared almost over night Corporal Klingers home town Toledo OH will scene SAM Champs 84 mid-June date has selected likely produce cooler weather lighter winds traditional July dates site former Toledo Municipal airport full-scale aviation activity will suspended three-day Champs Concrete runways well-maintained grass areas should make motorbike retrieval possible Free Flighters Access via 1-75 Ohio Turnpike interchange Quality Semco Mufflers Tuned Pipe Adapter Super Expansion FAI Competition Vertical Down Exhaust PiUs Pitts Jr Super Flo Thru Exhaust Manifolds 215 457-3120 area full motels Although head quarters motel yet unnamed will scene MECA Collecto tra ditional first evening bean feed awards banquet SAM Champs much social hap pening contest shaping up best ever Carl Spielmaker will serve general CD Tom McCoy Buck Zaire charge RC Anyone knows three rascals aware fun bring activity Free Flight director has named writing Watch column Clarence Haughts detailsbut dont let pack wild horses keep attending Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Helicopters/Jolly Continued paqe 54 one-minute period will allow check rate switches trims proper positions Also will able check noticeable vibration During warm-up period engine will come up operating temperature open throttle actual liftoff will able check carburetor properly ad justed good idle Continued page 148 ~blyand Double Value Ideal caddy workbench setting checking wing stab incidence Rgular$4998 1/4 Scale$3495 Balancing Posts5595 Dealer Inquiries Welcome 125 Manor Ave S emco Oaklyn NJ 08107 January 1984 145 ronaere power glow plugs 55 shirt pocket Usiog HeadlockTM adapte, allows stoy plog ond get propeller Rechargeable op 1000 tiwes SO day warranty No wore bulky botterieo nobles Order NISTARTER either 110 220 12 colt fost charger lestroctioce included Aloe available charger See dealer order direct frow us Visa & Mastercard accepted Please specify type charger Add $160 postage USA NIHI 1 uS c. 02165 NIlILlE 226 . t21g5 NIlILlA 120 adep. $21 65NI-HL1-NC No charger t120S 12721 Haskell La Bowie MD 20716 100114642260 inEEEmEThe hinge allows control surface removal tools lost pins problems PATENT PENDINGcovering liiipainting repair transportation storage etc Scale Appearance InsertSimple Assembly 3 SIZES No Slots No Pins o Rotate 90 3#86 $445 12-6- $495 RC Helicopters/Jolly Continued page 145 everything checked appears normal liftoff low hover just out ground effect Check machine trimmed hover plenty exhaust smoke Having needle just little fat gives safety margin ensures against engine burn-down everything looks like go blast off enjoy yourself following simple steps should able keep Helicopter safe accident due haste neglect what about safety aspects respect pilots spectators fol lowing safety rules should adhered rigidly Never break see some abusing remind him dire consequences being hit flying buzz saw Never hold touch Helicopter has rotors turning Never fly over pits another Heli copter pilot Never fly Helicopter shaking vibrating Never fly Helicopter glitching land immediately before something bad happens Never fly 80% abilities demonstrating machine uncomfortable executing maneuver probably flying past pro ficiency Go home practice until confident executing particular maneu ver learning new maneuver pre pared execute out maneu ver learning fly nose-in concerned about machine facing results get confused lose heading Before ever attempted maneuver decided emergency out would hard tail rotor either direc tion tail came around towards full forward cyclic Once forward flight could regain composure get things sorted out Never fly yourself struck flying machine might unable go help Always follow field rules procedures Never allow yourself get position would endanger bystander think before fly basic flight rules have compiled through observation past per sonal experience have crashed wit nessed other crashes could either have prevented could possibly have resulted catastrophic bodily damage dont think anyone would consider touching flying Helicopter witnessed bloody damage can caused spin ning rotor blade Just recently club field two friends tuning engine Baron 20 hold skid machine elevated above heads run engine full throttle ad justed needle valve As throttled back hot globule oil struck face immediately released ma chine rolled over rotor blades struck other fellow fore head very lucky Since rotor spinning down didnt possess enough energy take friends head off ever nasty gash across forehead enough show us potential getting hit smallest Helicopter Remember guys can have lot fun flying RC Helicoptersbut theyre too enjoyable have flying hospital bed Think before push throttle ward fly safely Helicopter review Playboy new 25-size machine manufactured Ishimasa Japan marketed US Con dor Hobbies inexpensive chopper really impressive features collective pitch Bell-Hiller rotor control fiberglass see-saw dampener limits toothed tail-rotor drive belt Apparently optional auto-rotation clutch will soon offered rotor diameter 405 length minus rotor-head 385 Playboy requires 4 5 servos control meant powered 25- 30-size Schnuerle 40-size sport engine Continued page 152 DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP5 DEALER DISTRIBUTOR INQUIRItS INVITED WS 54 20- 35 ENGINEs 3 CHANNEL ThE BEGINNERS KIlTEN AND EXPERTS TIGER Revolutionary snap wing eliminates bolts robber bands Complete kit $5455 dealer direct GEMINI MODELS INC P0 Boo t tBB Pasoarc NJ 07055 Hobby Swap News THE MODEL ENTHUSIAST USED EQUIPMENT GUIDE Boy other modelero nave 50% morel used equipment bargains other publication tree ad onmen new Nubooiption Cs0 & ore, Z 1 0 3d CloSe 010 101 CIOON $13 oeaenscorsoo 0003 Cr10 000 00 Hobby Near News ben PO no moan San Orego CA oaaa-onan ModellersFREEI IiCataIo I~SOXTOCh IFROMI MicroMark I-The Small Tool SpecialistsI I6II unofredootonuoajalfeofsb errowedfr omfl oeJe welryIGo nsowittoingCl eekMa kingan dpr ofessionalMo delMa kingIt r adesNO WAV AILABLETO YO UBY MA ILlOfl%go ortonteedI II 12001400 & 2000 MIL GIDif SCALE NICID AM. Pack FENIUNES o completely assembled connector choice o factory fresh cells built specifications SAFT AMERICA o vibration proof construction 4 point weld between cells o hi-rate charge capability charge 480 mil rate continuous cell damage o each pack completely cycled prior shipment o available flat square stick configuration unique battery compartments weight/balance considerations4 o extra long leads available special applications 0 custom designs dual airborne back-up systems o hi-rate UL approved charger available-charge rate 120 mil1I o individual cells solder tabs 12 14 20 Ah ca~acities o 1200 1400 airbome packs weigh 72 oz complete o 2000 airborne packs weigh only-i 15 oz completeAEe a2and14Ah 1200 & 1400 2000 Auai&tLts packselectric bost See Local Hobby Shop Dealer firstSEND $100 FOR COMPLETE CATALOG OF ALL BATTERY SYSTEMS AND OTHER PRODUCTS AVAILABLE FROM GLR/C Great E4IUUL15 Edb IAiFi UIIC REFUNDABLE ON FIRST ORDER LIt/Es 18701 Southamptom Livonia Ml 48152 [1 MFGRS & DISTRIBUTORS OIJALITY RIC PRODUCTS & COMPONENTS RC Helicopters/Jolly Continued page 148 Playboy arrived multi-hued box illustrations showing Helicopter best advantage kit well-packaged definitely up highest standards nothing damaged missing Before started assembly checked through struction manuals plan sheet point became little confused little patience figured out what going Originally Playboy marketed fixed-pitch machine full-size drawing variant two instruction manuals Japanese manuals basic Helicopter construction other collective-pitch version also two manuals course English translations minus pictures Japanese manuals instructions necessary Just keep open mind will find Actually Playboy very logically constructed can built anyone average mechanical skills built ac cording manuals powered OS Max 28 FSR-H Helicopter glow en gine control installed new Futaba FG-H Helicopter radio S-28 servos entire package functions superbly Playboy great fun fly Bell Hiller head allows smooth hovering high rate selected transmitter very aerobatic feel Playboy unlike small Heliboyit really grooves considering small Helicopter maybe should try Playboy ink youll very satisfied Until next month remember tail boom shakes rotor head out landing gear shakes engine-fan combination out BCNU Lorry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued vaqe 55 tice can quite well Another ap proach audio tachometers see Rich Porters Musical Tach January 1981 MA RMcM always just did lot flying dif ferent props too much prop en gine will run hotjust kind lug around field may go lean too much heat other hand prop enough will get lot rpm will go anyplace So start ask Most have racing have pretty good idea what rpm look plane ground Lets call static rpm Q500 no muffler 15% nitro fuel competitive engines look 16000 17500 rpm Quarter Midget20000 23000 rpm Formula One20000 23000 rpm OK lets go back Q500 As said rules areas dont allow prop modificationsexcept balance So through trial error can come up right rpm whats say five propsall same diameter pitchand turned different rpms Now what Well no two props same variable thing wood So come close Lets look some very basic things important good prop 1 Try select having good straight grain no knots 2 Flex proptry get stiffest wood 3 Check balancea prop too far out balance usually requires too much work blade making uneven airfoils 4 Check pitch both bladesthis will require pitch guage use manufac tured Prather Products very important select prop has same pitch both blades check ing pitch several props will find out prop runs different rpm Remember best prop will close same pitch blade can get Since can alter blade bal ancing can using flat file heavy blade also alter pitch slightly try match rhe other blade Whatever goal come up 152 Model Aviation
Edition: Model Aviation - 1984/01
Page Numbers: 54, 145, 148, 152
Radio Control HEL IC OP TERS Larry Jolly SAFETY preceding article said would compile list mandates necessary safe RC Helicopter operation fol lowing results shop Check Helicopter loose screws nuts Always use locknuts dont have nylon seals nuts have nylon seals always make sure screw threads extend past seal least two threads Periodically check ball links see worn out Check radio equipment loose wiring sloppy gears worn output arms Make sure receiver battery good shape up job intended Four five servos under load can really drag pack down hurry Check fuel system leaks detached clunk fuel tank Always use fuel filter check plugged up debris field Prior flight check controls move right direction really important especially new ra dios have servo-reversing inverted-flight switch Make certain control rods attached some machines necessary remove links fold rotor blades transportation Before start ing motor make sure radio switched fuel tank full Make sure hold rotor head se curely starting engine certain can kill engine full-aft throttle trim During flight Always carry Heli copter starting area flight area Prior actual liftoff accelerate rotor speed will let machine lift off yet will still allow some control event wind gust Allow ma chine spin-up least minute Continued page 145 Playboys tail feathers L Note wire tail bumpersaves dings tip fin business end Playboy R things note Bell-Hiller head anti-rotation link equalizer fiberglass seesaw independent blade flapping 54 Model Aviation Larry reviews Ishimasa Playboy chopper month used new Futaba Hell-radio OS Max 28 FSR-H engine liked Lots Info column have nice neighborsand quiet machineyou can make test hops right doorstep Larry says Playboy quite gentle hover yet aggressive aerobatics TOLEDOI84THIRTIETH ANNUAL RIO EXPOSITIONIU Reserve April 6 7 81984TOLEDO SPORTS ARENA attend worlds greatestONE MAIN STREET radio control model show WeTOLEDO OHIO featuring worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely ~nished models display enter competition excit ing awards Competition models will accepted during show hours till 10 am Sunday morning no entry fee Complete nc systems will presented first second third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days APRIL 67& 8 FRIDAY 9am SATURDAY 9am6pm SUNDAY 9am 430pm Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 units penultimate available concept reed receiver/transmitter series modulated audio tones vi brated metal strip causing close onto switch turn activated relay turn passed current servo sounds complexit tone such 500 cycles per second emited transmitter pilot activated several switches buttons picked up receiver used vibrate reed Thus tone eventually moved servo direction such Up elevator return surface neutral released transmitter button switch Another switch could pushed generate another tone would activate another control function such Down ele vator other words 10-channel unit capable moving five surfaces two directions until 1960 equipment capable generating tone time became available system referred Simul reader has never seen reed multi-channel flown preceeding likely conjures up visions very herky jerky flying Such case accomplished fliers became adept flicking switches flying closely resembled todays proportional equipment however con siderable accomplishment very early reed equipment Rockwood Schmidt others used control box rather buttons however didnt prove popular Control boxes scalelike sticks also available single-channel fliers simplify flying cas caded compound escapements illustrated past column have cluded some photos Ectron controller provided us reader As era complex enough what single channel compound es capements galloping ghost kicking duck reeds forth Good Worth Don Brown others also flying primitive proportional rigs early Quadraplex Space Control proportional equipment sale 1959 yet multi reed equipment sold well commonly used equipment well mid Sixties ever proportional did catch reed equipment disappeared almost over night Corporal Klingers home town Toledo OH will scene SAM Champs 84 mid-June date has selected likely produce cooler weather lighter winds traditional July dates site former Toledo Municipal airport full-scale aviation activity will suspended three-day Champs Concrete runways well-maintained grass areas should make motorbike retrieval possible Free Flighters Access via 1-75 Ohio Turnpike interchange Quality Semco Mufflers Tuned Pipe Adapter Super Expansion FAI Competition Vertical Down Exhaust PiUs Pitts Jr Super Flo Thru Exhaust Manifolds 215 457-3120 area full motels Although head quarters motel yet unnamed will scene MECA Collecto tra ditional first evening bean feed awards banquet SAM Champs much social hap pening contest shaping up best ever Carl Spielmaker will serve general CD Tom McCoy Buck Zaire charge RC Anyone knows three rascals aware fun bring activity Free Flight director has named writing Watch column Clarence Haughts detailsbut dont let pack wild horses keep attending Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Helicopters/Jolly Continued paqe 54 one-minute period will allow check rate switches trims proper positions Also will able check noticeable vibration During warm-up period engine will come up operating temperature open throttle actual liftoff will able check carburetor properly ad justed good idle Continued page 148 ~blyand Double Value Ideal caddy workbench setting checking wing stab incidence Rgular$4998 1/4 Scale$3495 Balancing Posts5595 Dealer Inquiries Welcome 125 Manor Ave S emco Oaklyn NJ 08107 January 1984 145 ronaere power glow plugs 55 shirt pocket Usiog HeadlockTM adapte, allows stoy plog ond get propeller Rechargeable op 1000 tiwes SO day warranty No wore bulky botterieo nobles Order NISTARTER either 110 220 12 colt fost charger lestroctioce included Aloe available charger See dealer order direct frow us Visa & Mastercard accepted Please specify type charger Add $160 postage USA NIHI 1 uS c. 02165 NIlILlE 226 . t21g5 NIlILlA 120 adep. $21 65NI-HL1-NC No charger t120S 12721 Haskell La Bowie MD 20716 100114642260 inEEEmEThe hinge allows control surface removal tools lost pins problems PATENT PENDINGcovering liiipainting repair transportation storage etc Scale Appearance InsertSimple Assembly 3 SIZES No Slots No Pins o Rotate 90 3#86 $445 12-6- $495 RC Helicopters/Jolly Continued page 145 everything checked appears normal liftoff low hover just out ground effect Check machine trimmed hover plenty exhaust smoke Having needle just little fat gives safety margin ensures against engine burn-down everything looks like go blast off enjoy yourself following simple steps should able keep Helicopter safe accident due haste neglect what about safety aspects respect pilots spectators fol lowing safety rules should adhered rigidly Never break see some abusing remind him dire consequences being hit flying buzz saw Never hold touch Helicopter has rotors turning Never fly over pits another Heli copter pilot Never fly Helicopter shaking vibrating Never fly Helicopter glitching land immediately before something bad happens Never fly 80% abilities demonstrating machine uncomfortable executing maneuver probably flying past pro ficiency Go home practice until confident executing particular maneu ver learning new maneuver pre pared execute out maneu ver learning fly nose-in concerned about machine facing results get confused lose heading Before ever attempted maneuver decided emergency out would hard tail rotor either direc tion tail came around towards full forward cyclic Once forward flight could regain composure get things sorted out Never fly yourself struck flying machine might unable go help Always follow field rules procedures Never allow yourself get position would endanger bystander think before fly basic flight rules have compiled through observation past per sonal experience have crashed wit nessed other crashes could either have prevented could possibly have resulted catastrophic bodily damage dont think anyone would consider touching flying Helicopter witnessed bloody damage can caused spin ning rotor blade Just recently club field two friends tuning engine Baron 20 hold skid machine elevated above heads run engine full throttle ad justed needle valve As throttled back hot globule oil struck face immediately released ma chine rolled over rotor blades struck other fellow fore head very lucky Since rotor spinning down didnt possess enough energy take friends head off ever nasty gash across forehead enough show us potential getting hit smallest Helicopter Remember guys can have lot fun flying RC Helicoptersbut theyre too enjoyable have flying hospital bed Think before push throttle ward fly safely Helicopter review Playboy new 25-size machine manufactured Ishimasa Japan marketed US Con dor Hobbies inexpensive chopper really impressive features collective pitch Bell-Hiller rotor control fiberglass see-saw dampener limits toothed tail-rotor drive belt Apparently optional auto-rotation clutch will soon offered rotor diameter 405 length minus rotor-head 385 Playboy requires 4 5 servos control meant powered 25- 30-size Schnuerle 40-size sport engine Continued page 152 DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP5 DEALER DISTRIBUTOR INQUIRItS INVITED WS 54 20- 35 ENGINEs 3 CHANNEL ThE BEGINNERS KIlTEN AND EXPERTS TIGER Revolutionary snap wing eliminates bolts robber bands Complete kit $5455 dealer direct GEMINI MODELS INC P0 Boo t tBB Pasoarc NJ 07055 Hobby Swap News THE MODEL ENTHUSIAST USED EQUIPMENT GUIDE Boy other modelero nave 50% morel used equipment bargains other publication tree ad onmen new Nubooiption Cs0 & ore, Z 1 0 3d CloSe 010 101 CIOON $13 oeaenscorsoo 0003 Cr10 000 00 Hobby Near News ben PO no moan San Orego CA oaaa-onan ModellersFREEI IiCataIo I~SOXTOCh IFROMI MicroMark I-The Small Tool SpecialistsI I6II unofredootonuoajalfeofsb errowedfr omfl oeJe welryIGo nsowittoingCl eekMa kingan dpr ofessionalMo delMa kingIt r adesNO WAV AILABLETO YO UBY MA ILlOfl%go ortonteedI II 12001400 & 2000 MIL GIDif SCALE NICID AM. Pack FENIUNES o completely assembled connector choice o factory fresh cells built specifications SAFT AMERICA o vibration proof construction 4 point weld between cells o hi-rate charge capability charge 480 mil rate continuous cell damage o each pack completely cycled prior shipment o available flat square stick configuration unique battery compartments weight/balance considerations4 o extra long leads available special applications 0 custom designs dual airborne back-up systems o hi-rate UL approved charger available-charge rate 120 mil1I o individual cells solder tabs 12 14 20 Ah ca~acities o 1200 1400 airbome packs weigh 72 oz complete o 2000 airborne packs weigh only-i 15 oz completeAEe a2and14Ah 1200 & 1400 2000 Auai&tLts packselectric bost See Local Hobby Shop Dealer firstSEND $100 FOR COMPLETE CATALOG OF ALL BATTERY SYSTEMS AND OTHER PRODUCTS AVAILABLE FROM GLR/C Great E4IUUL15 Edb IAiFi UIIC REFUNDABLE ON FIRST ORDER LIt/Es 18701 Southamptom Livonia Ml 48152 [1 MFGRS & DISTRIBUTORS OIJALITY RIC PRODUCTS & COMPONENTS RC Helicopters/Jolly Continued page 148 Playboy arrived multi-hued box illustrations showing Helicopter best advantage kit well-packaged definitely up highest standards nothing damaged missing Before started assembly checked through struction manuals plan sheet point became little confused little patience figured out what going Originally Playboy marketed fixed-pitch machine full-size drawing variant two instruction manuals Japanese manuals basic Helicopter construction other collective-pitch version also two manuals course English translations minus pictures Japanese manuals instructions necessary Just keep open mind will find Actually Playboy very logically constructed can built anyone average mechanical skills built ac cording manuals powered OS Max 28 FSR-H Helicopter glow en gine control installed new Futaba FG-H Helicopter radio S-28 servos entire package functions superbly Playboy great fun fly Bell Hiller head allows smooth hovering high rate selected transmitter very aerobatic feel Playboy unlike small Heliboyit really grooves considering small Helicopter maybe should try Playboy ink youll very satisfied Until next month remember tail boom shakes rotor head out landing gear shakes engine-fan combination out BCNU Lorry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued vaqe 55 tice can quite well Another ap proach audio tachometers see Rich Porters Musical Tach January 1981 MA RMcM always just did lot flying dif ferent props too much prop en gine will run hotjust kind lug around field may go lean too much heat other hand prop enough will get lot rpm will go anyplace So start ask Most have racing have pretty good idea what rpm look plane ground Lets call static rpm Q500 no muffler 15% nitro fuel competitive engines look 16000 17500 rpm Quarter Midget20000 23000 rpm Formula One20000 23000 rpm OK lets go back Q500 As said rules areas dont allow prop modificationsexcept balance So through trial error can come up right rpm whats say five propsall same diameter pitchand turned different rpms Now what Well no two props same variable thing wood So come close Lets look some very basic things important good prop 1 Try select having good straight grain no knots 2 Flex proptry get stiffest wood 3 Check balancea prop too far out balance usually requires too much work blade making uneven airfoils 4 Check pitch both bladesthis will require pitch guage use manufac tured Prather Products very important select prop has same pitch both blades check ing pitch several props will find out prop runs different rpm Remember best prop will close same pitch blade can get Since can alter blade bal ancing can using flat file heavy blade also alter pitch slightly try match rhe other blade Whatever goal come up 152 Model Aviation
Edition: Model Aviation - 1984/01
Page Numbers: 54, 145, 148, 152
Radio Control HEL IC OP TERS Larry Jolly SAFETY preceding article said would compile list mandates necessary safe RC Helicopter operation fol lowing results shop Check Helicopter loose screws nuts Always use locknuts dont have nylon seals nuts have nylon seals always make sure screw threads extend past seal least two threads Periodically check ball links see worn out Check radio equipment loose wiring sloppy gears worn output arms Make sure receiver battery good shape up job intended Four five servos under load can really drag pack down hurry Check fuel system leaks detached clunk fuel tank Always use fuel filter check plugged up debris field Prior flight check controls move right direction really important especially new ra dios have servo-reversing inverted-flight switch Make certain control rods attached some machines necessary remove links fold rotor blades transportation Before start ing motor make sure radio switched fuel tank full Make sure hold rotor head se curely starting engine certain can kill engine full-aft throttle trim During flight Always carry Heli copter starting area flight area Prior actual liftoff accelerate rotor speed will let machine lift off yet will still allow some control event wind gust Allow ma chine spin-up least minute Continued page 145 Playboys tail feathers L Note wire tail bumpersaves dings tip fin business end Playboy R things note Bell-Hiller head anti-rotation link equalizer fiberglass seesaw independent blade flapping 54 Model Aviation Larry reviews Ishimasa Playboy chopper month used new Futaba Hell-radio OS Max 28 FSR-H engine liked Lots Info column have nice neighborsand quiet machineyou can make test hops right doorstep Larry says Playboy quite gentle hover yet aggressive aerobatics TOLEDOI84THIRTIETH ANNUAL RIO EXPOSITIONIU Reserve April 6 7 81984TOLEDO SPORTS ARENA attend worlds greatestONE MAIN STREET radio control model show WeTOLEDO OHIO featuring worlds largest Swap Shops no dealers complete refreshment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest completely ~nished models display enter competition excit ing awards Competition models will accepted during show hours till 10 am Sunday morning no entry fee Complete nc systems will presented first second third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days APRIL 67& 8 FRIDAY 9am SATURDAY 9am6pm SUNDAY 9am 430pm Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 units penultimate available concept reed receiver/transmitter series modulated audio tones vi brated metal strip causing close onto switch turn activated relay turn passed current servo sounds complexit tone such 500 cycles per second emited transmitter pilot activated several switches buttons picked up receiver used vibrate reed Thus tone eventually moved servo direction such Up elevator return surface neutral released transmitter button switch Another switch could pushed generate another tone would activate another control function such Down ele vator other words 10-channel unit capable moving five surfaces two directions until 1960 equipment capable generating tone time became available system referred Simul reader has never seen reed multi-channel flown preceeding likely conjures up visions very herky jerky flying Such case accomplished fliers became adept flicking switches flying closely resembled todays proportional equipment however con siderable accomplishment very early reed equipment Rockwood Schmidt others used control box rather buttons however didnt prove popular Control boxes scalelike sticks also available single-channel fliers simplify flying cas caded compound escapements illustrated past column have cluded some photos Ectron controller provided us reader As era complex enough what single channel compound es capements galloping ghost kicking duck reeds forth Good Worth Don Brown others also flying primitive proportional rigs early Quadraplex Space Control proportional equipment sale 1959 yet multi reed equipment sold well commonly used equipment well mid Sixties ever proportional did catch reed equipment disappeared almost over night Corporal Klingers home town Toledo OH will scene SAM Champs 84 mid-June date has selected likely produce cooler weather lighter winds traditional July dates site former Toledo Municipal airport full-scale aviation activity will suspended three-day Champs Concrete runways well-maintained grass areas should make motorbike retrieval possible Free Flighters Access via 1-75 Ohio Turnpike interchange Quality Semco Mufflers Tuned Pipe Adapter Super Expansion FAI Competition Vertical Down Exhaust PiUs Pitts Jr Super Flo Thru Exhaust Manifolds 215 457-3120 area full motels Although head quarters motel yet unnamed will scene MECA Collecto tra ditional first evening bean feed awards banquet SAM Champs much social hap pening contest shaping up best ever Carl Spielmaker will serve general CD Tom McCoy Buck Zaire charge RC Anyone knows three rascals aware fun bring activity Free Flight director has named writing Watch column Clarence Haughts detailsbut dont let pack wild horses keep attending Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Helicopters/Jolly Continued paqe 54 one-minute period will allow check rate switches trims proper positions Also will able check noticeable vibration During warm-up period engine will come up operating temperature open throttle actual liftoff will able check carburetor properly ad justed good idle Continued page 148 ~blyand Double Value Ideal caddy workbench setting checking wing stab incidence Rgular$4998 1/4 Scale$3495 Balancing Posts5595 Dealer Inquiries Welcome 125 Manor Ave S emco Oaklyn NJ 08107 January 1984 145 ronaere power glow plugs 55 shirt pocket Usiog HeadlockTM adapte, allows stoy plog ond get propeller Rechargeable op 1000 tiwes SO day warranty No wore bulky botterieo nobles Order NISTARTER either 110 220 12 colt fost charger lestroctioce included Aloe available charger See dealer order direct frow us Visa & Mastercard accepted Please specify type charger Add $160 postage USA NIHI 1 uS c. 02165 NIlILlE 226 . t21g5 NIlILlA 120 adep. $21 65NI-HL1-NC No charger t120S 12721 Haskell La Bowie MD 20716 100114642260 inEEEmEThe hinge allows control surface removal tools lost pins problems PATENT PENDINGcovering liiipainting repair transportation storage etc Scale Appearance InsertSimple Assembly 3 SIZES No Slots No Pins o Rotate 90 3#86 $445 12-6- $495 RC Helicopters/Jolly Continued page 145 everything checked appears normal liftoff low hover just out ground effect Check machine trimmed hover plenty exhaust smoke Having needle just little fat gives safety margin ensures against engine burn-down everything looks like go blast off enjoy yourself following simple steps should able keep Helicopter safe accident due haste neglect what about safety aspects respect pilots spectators fol lowing safety rules should adhered rigidly Never break see some abusing remind him dire consequences being hit flying buzz saw Never hold touch Helicopter has rotors turning Never fly over pits another Heli copter pilot Never fly Helicopter shaking vibrating Never fly Helicopter glitching land immediately before something bad happens Never fly 80% abilities demonstrating machine uncomfortable executing maneuver probably flying past pro ficiency Go home practice until confident executing particular maneu ver learning new maneuver pre pared execute out maneu ver learning fly nose-in concerned about machine facing results get confused lose heading Before ever attempted maneuver decided emergency out would hard tail rotor either direc tion tail came around towards full forward cyclic Once forward flight could regain composure get things sorted out Never fly yourself struck flying machine might unable go help Always follow field rules procedures Never allow yourself get position would endanger bystander think before fly basic flight rules have compiled through observation past per sonal experience have crashed wit nessed other crashes could either have prevented could possibly have resulted catastrophic bodily damage dont think anyone would consider touching flying Helicopter witnessed bloody damage can caused spin ning rotor blade Just recently club field two friends tuning engine Baron 20 hold skid machine elevated above heads run engine full throttle ad justed needle valve As throttled back hot globule oil struck face immediately released ma chine rolled over rotor blades struck other fellow fore head very lucky Since rotor spinning down didnt possess enough energy take friends head off ever nasty gash across forehead enough show us potential getting hit smallest Helicopter Remember guys can have lot fun flying RC Helicoptersbut theyre too enjoyable have flying hospital bed Think before push throttle ward fly safely Helicopter review Playboy new 25-size machine manufactured Ishimasa Japan marketed US Con dor Hobbies inexpensive chopper really impressive features collective pitch Bell-Hiller rotor control fiberglass see-saw dampener limits toothed tail-rotor drive belt Apparently optional auto-rotation clutch will soon offered rotor diameter 405 length minus rotor-head 385 Playboy requires 4 5 servos control meant powered 25- 30-size Schnuerle 40-size sport engine Continued page 152 DUAL PERSONAUTY TRAINER GEMINIS BEAUTIFUL SUPER CHAMP5 DEALER DISTRIBUTOR INQUIRItS INVITED WS 54 20- 35 ENGINEs 3 CHANNEL ThE BEGINNERS KIlTEN AND EXPERTS TIGER Revolutionary snap wing eliminates bolts robber bands Complete kit $5455 dealer direct GEMINI MODELS INC P0 Boo t tBB Pasoarc NJ 07055 Hobby Swap News THE MODEL ENTHUSIAST USED EQUIPMENT GUIDE Boy other modelero nave 50% morel used equipment bargains other publication tree ad onmen new Nubooiption Cs0 & ore, Z 1 0 3d CloSe 010 101 CIOON $13 oeaenscorsoo 0003 Cr10 000 00 Hobby Near News ben PO no moan San Orego CA oaaa-onan ModellersFREEI IiCataIo I~SOXTOCh IFROMI MicroMark I-The Small Tool SpecialistsI I6II unofredootonuoajalfeofsb errowedfr omfl oeJe welryIGo nsowittoingCl eekMa kingan dpr ofessionalMo delMa kingIt r adesNO WAV AILABLETO YO UBY MA ILlOfl%go ortonteedI II 12001400 & 2000 MIL GIDif SCALE NICID AM. Pack FENIUNES o completely assembled connector choice o factory fresh cells built specifications SAFT AMERICA o vibration proof construction 4 point weld between cells o hi-rate charge capability charge 480 mil rate continuous cell damage o each pack completely cycled prior shipment o available flat square stick configuration unique battery compartments weight/balance considerations4 o extra long leads available special applications 0 custom designs dual airborne back-up systems o hi-rate UL approved charger available-charge rate 120 mil1I o individual cells solder tabs 12 14 20 Ah ca~acities o 1200 1400 airbome packs weigh 72 oz complete o 2000 airborne packs weigh only-i 15 oz completeAEe a2and14Ah 1200 & 1400 2000 Auai&tLts packselectric bost See Local Hobby Shop Dealer firstSEND $100 FOR COMPLETE CATALOG OF ALL BATTERY SYSTEMS AND OTHER PRODUCTS AVAILABLE FROM GLR/C Great E4IUUL15 Edb IAiFi UIIC REFUNDABLE ON FIRST ORDER LIt/Es 18701 Southamptom Livonia Ml 48152 [1 MFGRS & DISTRIBUTORS OIJALITY RIC PRODUCTS & COMPONENTS RC Helicopters/Jolly Continued page 148 Playboy arrived multi-hued box illustrations showing Helicopter best advantage kit well-packaged definitely up highest standards nothing damaged missing Before started assembly checked through struction manuals plan sheet point became little confused little patience figured out what going Originally Playboy marketed fixed-pitch machine full-size drawing variant two instruction manuals Japanese manuals basic Helicopter construction other collective-pitch version also two manuals course English translations minus pictures Japanese manuals instructions necessary Just keep open mind will find Actually Playboy very logically constructed can built anyone average mechanical skills built ac cording manuals powered OS Max 28 FSR-H Helicopter glow en gine control installed new Futaba FG-H Helicopter radio S-28 servos entire package functions superbly Playboy great fun fly Bell Hiller head allows smooth hovering high rate selected transmitter very aerobatic feel Playboy unlike small Heliboyit really grooves considering small Helicopter maybe should try Playboy ink youll very satisfied Until next month remember tail boom shakes rotor head out landing gear shakes engine-fan combination out BCNU Lorry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/Hager Continued vaqe 55 tice can quite well Another ap proach audio tachometers see Rich Porters Musical Tach January 1981 MA RMcM always just did lot flying dif ferent props too much prop en gine will run hotjust kind lug around field may go lean too much heat other hand prop enough will get lot rpm will go anyplace So start ask Most have racing have pretty good idea what rpm look plane ground Lets call static rpm Q500 no muffler 15% nitro fuel competitive engines look 16000 17500 rpm Quarter Midget20000 23000 rpm Formula One20000 23000 rpm OK lets go back Q500 As said rules areas dont allow prop modificationsexcept balance So through trial error can come up right rpm whats say five propsall same diameter pitchand turned different rpms Now what Well no two props same variable thing wood So come close Lets look some very basic things important good prop 1 Try select having good straight grain no knots 2 Flex proptry get stiffest wood 3 Check balancea prop too far out balance usually requires too much work blade making uneven airfoils 4 Check pitch both bladesthis will require pitch guage use manufac tured Prather Products very important select prop has same pitch both blades check ing pitch several props will find out prop runs different rpm Remember best prop will close same pitch blade can get Since can alter blade bal ancing can using flat file heavy blade also alter pitch slightly try match rhe other blade Whatever goal come up 152 Model Aviation