S Radio Control copters Larry Jolly WELCOME BACK hope col umn finds healthy chopper running smoothly month going take look radio new Scale machine New Airtronics Helicopter radio folks Airtronics kindly supplied us new Module 7H1 radios look new offering member top-of-the-line Module family Module 7H available two styles major difference being 7H1 trade two pitch-curve options Invert function would know version choose serious FAT flier would probably choose 7H because its two separate pitch curves allow far flexibility setting up machine Before going too much farther functions radio has Id like point out supplied finest instruction manuals Ive read its written simple English novice Heli-pilot should able read understand What makes radio dedicated Heli copter radio way functions can mixed particular mixing throttle/collective-pitch/rudder stick course mixing accomplished transmitter youll find difference other sets Lets take look transmitter obvious features silver-and-black case common Airtronics Module radios standard clock digitalreadout stopwatch transmitter weighs 23 pounds has very nice balanced feel Reversing switches seven channels standard end-point ad justment flight controls throttle high end 7H1 features adjustable throttle rudder mix torque compensation Continued page 140 __________________ 1/ 1 Hughes OH-6A Above representative later versions Model Below features LJMP fuselage GMP Cobra mechanics Quest gyro Airtronlcs radio OS 50 FSR engine Its real hot rod Paint scheme TV series Magnum P1 April 1986 57 arry puts Hughes 500D through its paces Airtronics radio worked great Airtronics Module 7H1 radio tested Larry Jolly has features HelipilOt5 9 New Br SnehslDeimar Lightest weight hand start ready-to-mount englnesu th market 31 *27500 34 $34500 37- *35500 42 $37500 Engines Complete Nothing Extra Buy Choice points 31or CDI ignition %34-553 2a-SJEP&7-55s4a-65 NP42-553 Ioz. TSP Features Customized newest German engines parts lai t ting Salle aura Tap smoka Caritwelci Unkaga Ignition CH Elactronicala 48 V Ignition Pack ty Switch lt Hub etor Spk PIgs Waranty ca Faulty Parts Workmanship T G Mtg 857 HIgh Mountain Rd North Haldon NJ 07508 e 201 427-3845 HP a Bigger Engine. verb otcn. no way b Increase Compression old hot rod trick. allowed c More Breathing air fuel. bigger ... allowed may work engine cant draw fuel anyway d Better breathing larger valves passages etc.. allowed may actually hurt carb cain im proved well e The old hot cam. allowed very difficult anyway Changing cam timing may make things worse lower rpm other tricks like bigger carb Hot cams almost always used get breathing high rpm increases horsepower although peak torque may actually less before Hop-up isnt simple engine load ing such prop controlled brings up subject newer hotter engines make noticeably horsepower load rpm must come 1 Bigger carbs 2 Higher-rpm tuning design 3 Different-than-glow ignition 4 Hotter cams better breathing higher rpm 5 Supercharging tuned intake exhausts also type supercharging Youll notice increased compres sion old hot rod trick hasnt mentioned because glow ignition ralsing compression current engines will get trouble detona tion will slow down dont lose prop Higher-horsepower engine models introduced will somewhat dif ferent set up higher rpm special take ignition systems Extra horse power will mean complication expense manufacturers will keep bread-and-butter models available Because competition engines will stay very similar other performance information intended make experts out just help understand difference between hearsay buzzwords reality proven technical facts disposal keep engines competitive equiva lent Dont panic advertising high horsepower. talk usable horse power racing conditions care feeding Fours 1 Keep fuel tank close carb centerline possible 2 Read instructions break engine using rich needle valve setting 3 To start three approved engines open full throttle close choke giow off flip engine through two three times until fuel runs out exhaust close throttle open choke turn engine spinner back forth rid excess fuel light glow plug has hot because heavy elements fourstroke plugs turn prop spinner backwards slowly until feel back wards compression snap spinner back compression. engine will usual ly start didnt usually its still stiff storage oil engine must snappy free plug may hot enough Maybe need choke again difficult flood since fuel doesnt go through crankcase excess fuel can run out exhaust pipe side-mounted engines Always rock prop back forth clear excess fuel Fuel will compress can bend rodthis especially true use electric starter use dont choke much clear chamber first rocking spinner will need super battery starter use Several us have use electric starter yet still get one-flip starts follow sequence got one-to-two-flip starts last summer. four-strokers dont load up after idling long time 4 Tighten prop before flying session prop has moved after flight probably too lean engine detonating 5 Follow instructions set valves after first hour running once hour after valve clearance changes much after first hour proba bly running too lean pushing 6 Oil engine through overflow tube after flying once hour adjusting valves under rocker covers making sure runs down pushrod tubes oil cam 7 Use tachometer setting needle especially first time cant hear change much fourstrokes Typically back off 600-700 rpm first hour Enya OS especially least 300 rpm racing Saito appears less sensitive Learn engine/fuel tank combination tach just guidelines engine may bit different much different fuel system may drawing well should DONT TRUST YOUR EAR blow props engines trying tell you didnt set right Send tips ideas can pass readers See next month Bill Hager 706 Glen Haven Dr Conroe TX 77385 RC Helicopters/Jolly Continued page 57 pitch-curve adjustment both high low hovering memory idle-up pitch trim 25% range authority invert switch throttle hold two methods gyro control retract switch course dual rates aileron elevator functions sounds like lotits because 7H1 has just about everything Helicopter jock could want addition its laid out such fashion wont have trouble getting everything copter screaming around sky Airtronics also thoughtful enough add inhibit options invert throttle hold gyro throttle/rudder mix case dont want accidentally use perhaps youd like fly fixed-wing model radio test radio came equipped Air tronics new dual-conversion narrow-band receiver measures 2A x 1 x es 140 Model Aviation 904 478-6745 Al Featuring fast service qualified eopIe latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessories discounted prices RADIO SOUTH-m AUTHORIZED SERVICE CENTER FOR Kruft Pro Line w Futeb 43 West Nine Mile Rd Pensacola FL 32514 * Sales Service er Inquiries Welcome * has seven channels receiver usually something think about install gives problems Im very happy tell has never given hint glitch Airtronics has wide range excellent servos system equipped 94554s servo features ball-bearingsupported output shaft careless motor 04-second transit time 900 735 inch-ounces output torque really like 94554s have lot luck over years So have youre market new radio dont check new Airtronics Module 7H out Let know what think think has capabilities bringing new dimension Heli-flying New LIMP Hughes 500 fuselage Also shown months photos new Hughes 500 shell 50160-size mechan ics fuselage epoxy-glass 43 long weighs 19 oz available D E matter C versions par ticular model shown photos built Jim Brandon Lakewood CA features OMP Cobra mechanics OS 50 FSR-H engine Quest gyro weighs 9 lb ready fly real hot rod fuselage designed Cobra mechanics mind has plenty room will take other kinds well Beginners corner con fusing things new Heli-flier set up throttle/rudder mixing function Helicopter radio Some Helicopter radios have very simple rudder/throttle mixing function consisting two rate knobs marked REV ACC slide switch marked LEFT/OFF/RIGHT task really very simple can dialed relatively quickly must first determine whether have left- righthanded main rotor Looking rotating disc above does rotate clockwise anti-clockwise have Schluter Hirobo Kalt Gorham product rotor spins clockwise right-handed rotor Set slide switch position marked RIGHT have diffearent-style radio adjust proper rotor rotation according its operating instructions tail-swinging problem trying overcame occurs because power added main rotor torque applied fuselage opposite direction rotation main rotor causes fuselage swing left machine right-handed rotor cure dial enough tail-rotor compensation fuselage stays straight Check adjustment holding machine steady hover giving quick blip throttle nose swings left compensation necessary nose swings right radio overcompensating radio must ad justed accordingly Once have mix set properly nose Helicopter will stay fairly stationary making climbs descending Now addition gyro nose will stable mother-in-law should able handle Good luck hope stops some twitchy tails months three-view 1960 US Department Defense issued Tech nical Specification 153 light Obser vation Helicopter Hughes submitted model 369 flying egg referring its shape 369 won campetition received its Army designation OH-6 code-named Cayuse Based Allison 250-series turbine engine Hughes product seemed ideal military service beginning Referred Hughes 500 commercial customers little machine has proved tough com petition Bell Jet Ranger Featuring fully-articulated rotor Hughes both nimble very fast Because 500s unique shape its appearance Magnum P1 TV series probably secand-most-recognized machine right hind Jet Ranger Model SOOs available Kalt Schluter Eberles Great Lakes Graup ner UMP Peka Have good month think about checking head screws engine once recently Heli show signs losing power found head leaking BCNU Lariy Jolly 5501 W Como Santa Ana CA 92703 RC History/Good Continued page 63 60 MHz built another receiver relay actuator end June six ffights made new dual control system definitely trickier control heard other entries plan ning use dual controls wanted prepared Gulls weight up 8 lb including 2 lb radio gear gave 13 oz/sq ft wing loading too much considering thick Grant wing section power Brown Jr its homemade 16-in-dia propeller Nats ground control demon stration went well sal waited turn fly Bill present since already gone job radio operator summer camp Another amateur Paul Kreiick W8QQE assisting After watching first three entries make attempts approaching storm finally arrived along rain judges scuffled hangar shelter flight attempted due Continued page 146 April 1986 141
Edition: Model Aviation - 1986/04
Page Numbers: 57, 140, 141
S Radio Control copters Larry Jolly WELCOME BACK hope col umn finds healthy chopper running smoothly month going take look radio new Scale machine New Airtronics Helicopter radio folks Airtronics kindly supplied us new Module 7H1 radios look new offering member top-of-the-line Module family Module 7H available two styles major difference being 7H1 trade two pitch-curve options Invert function would know version choose serious FAT flier would probably choose 7H because its two separate pitch curves allow far flexibility setting up machine Before going too much farther functions radio has Id like point out supplied finest instruction manuals Ive read its written simple English novice Heli-pilot should able read understand What makes radio dedicated Heli copter radio way functions can mixed particular mixing throttle/collective-pitch/rudder stick course mixing accomplished transmitter youll find difference other sets Lets take look transmitter obvious features silver-and-black case common Airtronics Module radios standard clock digitalreadout stopwatch transmitter weighs 23 pounds has very nice balanced feel Reversing switches seven channels standard end-point ad justment flight controls throttle high end 7H1 features adjustable throttle rudder mix torque compensation Continued page 140 __________________ 1/ 1 Hughes OH-6A Above representative later versions Model Below features LJMP fuselage GMP Cobra mechanics Quest gyro Airtronlcs radio OS 50 FSR engine Its real hot rod Paint scheme TV series Magnum P1 April 1986 57 arry puts Hughes 500D through its paces Airtronics radio worked great Airtronics Module 7H1 radio tested Larry Jolly has features HelipilOt5 9 New Br SnehslDeimar Lightest weight hand start ready-to-mount englnesu th market 31 *27500 34 $34500 37- *35500 42 $37500 Engines Complete Nothing Extra Buy Choice points 31or CDI ignition %34-553 2a-SJEP&7-55s4a-65 NP42-553 Ioz. TSP Features Customized newest German engines parts lai t ting Salle aura Tap smoka Caritwelci Unkaga Ignition CH Elactronicala 48 V Ignition Pack ty Switch lt Hub etor Spk PIgs Waranty ca Faulty Parts Workmanship T G Mtg 857 HIgh Mountain Rd North Haldon NJ 07508 e 201 427-3845 HP a Bigger Engine. verb otcn. no way b Increase Compression old hot rod trick. allowed c More Breathing air fuel. bigger ... allowed may work engine cant draw fuel anyway d Better breathing larger valves passages etc.. allowed may actually hurt carb cain im proved well e The old hot cam. allowed very difficult anyway Changing cam timing may make things worse lower rpm other tricks like bigger carb Hot cams almost always used get breathing high rpm increases horsepower although peak torque may actually less before Hop-up isnt simple engine load ing such prop controlled brings up subject newer hotter engines make noticeably horsepower load rpm must come 1 Bigger carbs 2 Higher-rpm tuning design 3 Different-than-glow ignition 4 Hotter cams better breathing higher rpm 5 Supercharging tuned intake exhausts also type supercharging Youll notice increased compres sion old hot rod trick hasnt mentioned because glow ignition ralsing compression current engines will get trouble detona tion will slow down dont lose prop Higher-horsepower engine models introduced will somewhat dif ferent set up higher rpm special take ignition systems Extra horse power will mean complication expense manufacturers will keep bread-and-butter models available Because competition engines will stay very similar other performance information intended make experts out just help understand difference between hearsay buzzwords reality proven technical facts disposal keep engines competitive equiva lent Dont panic advertising high horsepower. talk usable horse power racing conditions care feeding Fours 1 Keep fuel tank close carb centerline possible 2 Read instructions break engine using rich needle valve setting 3 To start three approved engines open full throttle close choke giow off flip engine through two three times until fuel runs out exhaust close throttle open choke turn engine spinner back forth rid excess fuel light glow plug has hot because heavy elements fourstroke plugs turn prop spinner backwards slowly until feel back wards compression snap spinner back compression. engine will usual ly start didnt usually its still stiff storage oil engine must snappy free plug may hot enough Maybe need choke again difficult flood since fuel doesnt go through crankcase excess fuel can run out exhaust pipe side-mounted engines Always rock prop back forth clear excess fuel Fuel will compress can bend rodthis especially true use electric starter use dont choke much clear chamber first rocking spinner will need super battery starter use Several us have use electric starter yet still get one-flip starts follow sequence got one-to-two-flip starts last summer. four-strokers dont load up after idling long time 4 Tighten prop before flying session prop has moved after flight probably too lean engine detonating 5 Follow instructions set valves after first hour running once hour after valve clearance changes much after first hour proba bly running too lean pushing 6 Oil engine through overflow tube after flying once hour adjusting valves under rocker covers making sure runs down pushrod tubes oil cam 7 Use tachometer setting needle especially first time cant hear change much fourstrokes Typically back off 600-700 rpm first hour Enya OS especially least 300 rpm racing Saito appears less sensitive Learn engine/fuel tank combination tach just guidelines engine may bit different much different fuel system may drawing well should DONT TRUST YOUR EAR blow props engines trying tell you didnt set right Send tips ideas can pass readers See next month Bill Hager 706 Glen Haven Dr Conroe TX 77385 RC Helicopters/Jolly Continued page 57 pitch-curve adjustment both high low hovering memory idle-up pitch trim 25% range authority invert switch throttle hold two methods gyro control retract switch course dual rates aileron elevator functions sounds like lotits because 7H1 has just about everything Helicopter jock could want addition its laid out such fashion wont have trouble getting everything copter screaming around sky Airtronics also thoughtful enough add inhibit options invert throttle hold gyro throttle/rudder mix case dont want accidentally use perhaps youd like fly fixed-wing model radio test radio came equipped Air tronics new dual-conversion narrow-band receiver measures 2A x 1 x es 140 Model Aviation 904 478-6745 Al Featuring fast service qualified eopIe latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessories discounted prices RADIO SOUTH-m AUTHORIZED SERVICE CENTER FOR Kruft Pro Line w Futeb 43 West Nine Mile Rd Pensacola FL 32514 * Sales Service er Inquiries Welcome * has seven channels receiver usually something think about install gives problems Im very happy tell has never given hint glitch Airtronics has wide range excellent servos system equipped 94554s servo features ball-bearingsupported output shaft careless motor 04-second transit time 900 735 inch-ounces output torque really like 94554s have lot luck over years So have youre market new radio dont check new Airtronics Module 7H out Let know what think think has capabilities bringing new dimension Heli-flying New LIMP Hughes 500 fuselage Also shown months photos new Hughes 500 shell 50160-size mechan ics fuselage epoxy-glass 43 long weighs 19 oz available D E matter C versions par ticular model shown photos built Jim Brandon Lakewood CA features OMP Cobra mechanics OS 50 FSR-H engine Quest gyro weighs 9 lb ready fly real hot rod fuselage designed Cobra mechanics mind has plenty room will take other kinds well Beginners corner con fusing things new Heli-flier set up throttle/rudder mixing function Helicopter radio Some Helicopter radios have very simple rudder/throttle mixing function consisting two rate knobs marked REV ACC slide switch marked LEFT/OFF/RIGHT task really very simple can dialed relatively quickly must first determine whether have left- righthanded main rotor Looking rotating disc above does rotate clockwise anti-clockwise have Schluter Hirobo Kalt Gorham product rotor spins clockwise right-handed rotor Set slide switch position marked RIGHT have diffearent-style radio adjust proper rotor rotation according its operating instructions tail-swinging problem trying overcame occurs because power added main rotor torque applied fuselage opposite direction rotation main rotor causes fuselage swing left machine right-handed rotor cure dial enough tail-rotor compensation fuselage stays straight Check adjustment holding machine steady hover giving quick blip throttle nose swings left compensation necessary nose swings right radio overcompensating radio must ad justed accordingly Once have mix set properly nose Helicopter will stay fairly stationary making climbs descending Now addition gyro nose will stable mother-in-law should able handle Good luck hope stops some twitchy tails months three-view 1960 US Department Defense issued Tech nical Specification 153 light Obser vation Helicopter Hughes submitted model 369 flying egg referring its shape 369 won campetition received its Army designation OH-6 code-named Cayuse Based Allison 250-series turbine engine Hughes product seemed ideal military service beginning Referred Hughes 500 commercial customers little machine has proved tough com petition Bell Jet Ranger Featuring fully-articulated rotor Hughes both nimble very fast Because 500s unique shape its appearance Magnum P1 TV series probably secand-most-recognized machine right hind Jet Ranger Model SOOs available Kalt Schluter Eberles Great Lakes Graup ner UMP Peka Have good month think about checking head screws engine once recently Heli show signs losing power found head leaking BCNU Lariy Jolly 5501 W Como Santa Ana CA 92703 RC History/Good Continued page 63 60 MHz built another receiver relay actuator end June six ffights made new dual control system definitely trickier control heard other entries plan ning use dual controls wanted prepared Gulls weight up 8 lb including 2 lb radio gear gave 13 oz/sq ft wing loading too much considering thick Grant wing section power Brown Jr its homemade 16-in-dia propeller Nats ground control demon stration went well sal waited turn fly Bill present since already gone job radio operator summer camp Another amateur Paul Kreiick W8QQE assisting After watching first three entries make attempts approaching storm finally arrived along rain judges scuffled hangar shelter flight attempted due Continued page 146 April 1986 141
Edition: Model Aviation - 1986/04
Page Numbers: 57, 140, 141
S Radio Control copters Larry Jolly WELCOME BACK hope col umn finds healthy chopper running smoothly month going take look radio new Scale machine New Airtronics Helicopter radio folks Airtronics kindly supplied us new Module 7H1 radios look new offering member top-of-the-line Module family Module 7H available two styles major difference being 7H1 trade two pitch-curve options Invert function would know version choose serious FAT flier would probably choose 7H because its two separate pitch curves allow far flexibility setting up machine Before going too much farther functions radio has Id like point out supplied finest instruction manuals Ive read its written simple English novice Heli-pilot should able read understand What makes radio dedicated Heli copter radio way functions can mixed particular mixing throttle/collective-pitch/rudder stick course mixing accomplished transmitter youll find difference other sets Lets take look transmitter obvious features silver-and-black case common Airtronics Module radios standard clock digitalreadout stopwatch transmitter weighs 23 pounds has very nice balanced feel Reversing switches seven channels standard end-point ad justment flight controls throttle high end 7H1 features adjustable throttle rudder mix torque compensation Continued page 140 __________________ 1/ 1 Hughes OH-6A Above representative later versions Model Below features LJMP fuselage GMP Cobra mechanics Quest gyro Airtronlcs radio OS 50 FSR engine Its real hot rod Paint scheme TV series Magnum P1 April 1986 57 arry puts Hughes 500D through its paces Airtronics radio worked great Airtronics Module 7H1 radio tested Larry Jolly has features HelipilOt5 9 New Br SnehslDeimar Lightest weight hand start ready-to-mount englnesu th market 31 *27500 34 $34500 37- *35500 42 $37500 Engines Complete Nothing Extra Buy Choice points 31or CDI ignition %34-553 2a-SJEP&7-55s4a-65 NP42-553 Ioz. TSP Features Customized newest German engines parts lai t ting Salle aura Tap smoka Caritwelci Unkaga Ignition CH Elactronicala 48 V Ignition Pack ty Switch lt Hub etor Spk PIgs Waranty ca Faulty Parts Workmanship T G Mtg 857 HIgh Mountain Rd North Haldon NJ 07508 e 201 427-3845 HP a Bigger Engine. verb otcn. no way b Increase Compression old hot rod trick. allowed c More Breathing air fuel. bigger ... allowed may work engine cant draw fuel anyway d Better breathing larger valves passages etc.. allowed may actually hurt carb cain im proved well e The old hot cam. allowed very difficult anyway Changing cam timing may make things worse lower rpm other tricks like bigger carb Hot cams almost always used get breathing high rpm increases horsepower although peak torque may actually less before Hop-up isnt simple engine load ing such prop controlled brings up subject newer hotter engines make noticeably horsepower load rpm must come 1 Bigger carbs 2 Higher-rpm tuning design 3 Different-than-glow ignition 4 Hotter cams better breathing higher rpm 5 Supercharging tuned intake exhausts also type supercharging Youll notice increased compres sion old hot rod trick hasnt mentioned because glow ignition ralsing compression current engines will get trouble detona tion will slow down dont lose prop Higher-horsepower engine models introduced will somewhat dif ferent set up higher rpm special take ignition systems Extra horse power will mean complication expense manufacturers will keep bread-and-butter models available Because competition engines will stay very similar other performance information intended make experts out just help understand difference between hearsay buzzwords reality proven technical facts disposal keep engines competitive equiva lent Dont panic advertising high horsepower. talk usable horse power racing conditions care feeding Fours 1 Keep fuel tank close carb centerline possible 2 Read instructions break engine using rich needle valve setting 3 To start three approved engines open full throttle close choke giow off flip engine through two three times until fuel runs out exhaust close throttle open choke turn engine spinner back forth rid excess fuel light glow plug has hot because heavy elements fourstroke plugs turn prop spinner backwards slowly until feel back wards compression snap spinner back compression. engine will usual ly start didnt usually its still stiff storage oil engine must snappy free plug may hot enough Maybe need choke again difficult flood since fuel doesnt go through crankcase excess fuel can run out exhaust pipe side-mounted engines Always rock prop back forth clear excess fuel Fuel will compress can bend rodthis especially true use electric starter use dont choke much clear chamber first rocking spinner will need super battery starter use Several us have use electric starter yet still get one-flip starts follow sequence got one-to-two-flip starts last summer. four-strokers dont load up after idling long time 4 Tighten prop before flying session prop has moved after flight probably too lean engine detonating 5 Follow instructions set valves after first hour running once hour after valve clearance changes much after first hour proba bly running too lean pushing 6 Oil engine through overflow tube after flying once hour adjusting valves under rocker covers making sure runs down pushrod tubes oil cam 7 Use tachometer setting needle especially first time cant hear change much fourstrokes Typically back off 600-700 rpm first hour Enya OS especially least 300 rpm racing Saito appears less sensitive Learn engine/fuel tank combination tach just guidelines engine may bit different much different fuel system may drawing well should DONT TRUST YOUR EAR blow props engines trying tell you didnt set right Send tips ideas can pass readers See next month Bill Hager 706 Glen Haven Dr Conroe TX 77385 RC Helicopters/Jolly Continued page 57 pitch-curve adjustment both high low hovering memory idle-up pitch trim 25% range authority invert switch throttle hold two methods gyro control retract switch course dual rates aileron elevator functions sounds like lotits because 7H1 has just about everything Helicopter jock could want addition its laid out such fashion wont have trouble getting everything copter screaming around sky Airtronics also thoughtful enough add inhibit options invert throttle hold gyro throttle/rudder mix case dont want accidentally use perhaps youd like fly fixed-wing model radio test radio came equipped Air tronics new dual-conversion narrow-band receiver measures 2A x 1 x es 140 Model Aviation 904 478-6745 Al Featuring fast service qualified eopIe latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessories discounted prices RADIO SOUTH-m AUTHORIZED SERVICE CENTER FOR Kruft Pro Line w Futeb 43 West Nine Mile Rd Pensacola FL 32514 * Sales Service er Inquiries Welcome * has seven channels receiver usually something think about install gives problems Im very happy tell has never given hint glitch Airtronics has wide range excellent servos system equipped 94554s servo features ball-bearingsupported output shaft careless motor 04-second transit time 900 735 inch-ounces output torque really like 94554s have lot luck over years So have youre market new radio dont check new Airtronics Module 7H out Let know what think think has capabilities bringing new dimension Heli-flying New LIMP Hughes 500 fuselage Also shown months photos new Hughes 500 shell 50160-size mechan ics fuselage epoxy-glass 43 long weighs 19 oz available D E matter C versions par ticular model shown photos built Jim Brandon Lakewood CA features OMP Cobra mechanics OS 50 FSR-H engine Quest gyro weighs 9 lb ready fly real hot rod fuselage designed Cobra mechanics mind has plenty room will take other kinds well Beginners corner con fusing things new Heli-flier set up throttle/rudder mixing function Helicopter radio Some Helicopter radios have very simple rudder/throttle mixing function consisting two rate knobs marked REV ACC slide switch marked LEFT/OFF/RIGHT task really very simple can dialed relatively quickly must first determine whether have left- righthanded main rotor Looking rotating disc above does rotate clockwise anti-clockwise have Schluter Hirobo Kalt Gorham product rotor spins clockwise right-handed rotor Set slide switch position marked RIGHT have diffearent-style radio adjust proper rotor rotation according its operating instructions tail-swinging problem trying overcame occurs because power added main rotor torque applied fuselage opposite direction rotation main rotor causes fuselage swing left machine right-handed rotor cure dial enough tail-rotor compensation fuselage stays straight Check adjustment holding machine steady hover giving quick blip throttle nose swings left compensation necessary nose swings right radio overcompensating radio must ad justed accordingly Once have mix set properly nose Helicopter will stay fairly stationary making climbs descending Now addition gyro nose will stable mother-in-law should able handle Good luck hope stops some twitchy tails months three-view 1960 US Department Defense issued Tech nical Specification 153 light Obser vation Helicopter Hughes submitted model 369 flying egg referring its shape 369 won campetition received its Army designation OH-6 code-named Cayuse Based Allison 250-series turbine engine Hughes product seemed ideal military service beginning Referred Hughes 500 commercial customers little machine has proved tough com petition Bell Jet Ranger Featuring fully-articulated rotor Hughes both nimble very fast Because 500s unique shape its appearance Magnum P1 TV series probably secand-most-recognized machine right hind Jet Ranger Model SOOs available Kalt Schluter Eberles Great Lakes Graup ner UMP Peka Have good month think about checking head screws engine once recently Heli show signs losing power found head leaking BCNU Lariy Jolly 5501 W Como Santa Ana CA 92703 RC History/Good Continued page 63 60 MHz built another receiver relay actuator end June six ffights made new dual control system definitely trickier control heard other entries plan ning use dual controls wanted prepared Gulls weight up 8 lb including 2 lb radio gear gave 13 oz/sq ft wing loading too much considering thick Grant wing section power Brown Jr its homemade 16-in-dia propeller Nats ground control demon stration went well sal waited turn fly Bill present since already gone job radio operator summer camp Another amateur Paul Kreiick W8QQE assisting After watching first three entries make attempts approaching storm finally arrived along rain judges scuffled hangar shelter flight attempted due Continued page 146 April 1986 141