RADIO CONTROL HELICOPTERS WHEN SIT computer start another column try think subject will interest readers task made lot easier receive letter requesting information general interest Luke Christian Rohnert Park CA wrote questions concerning proper setup gyro techniques setup hovering aerobatics some technical reasons gyros behave set up correctly Since have devoted column gyros yet certainly seems like perfect time So lets start some theory basis understanding very valuable part helicopters Until recently gyros same basic design box two spinning wheels additional boxes contained electronics on-off switch gain-control settings reverse switch etc spinning wheels gyro can clearly heard gyro turned act reference keep gyro helicopter pointing constant direction lot battery power also required keep wheels spinning high speed 1000 mAh battery recommended helicopter flying mechanical-type gyro has recently given way new solid state gyro did away spinning wheels generally houses components small box Its important us right now understand principles behind solid-state gyro except no moving parts should last longer less susceptible crash damage Because gyro senses rotational movement versus side-toside movement should mounted close main shaft helicopter possible since helicopter rotates about main shaft gyro mounted too far main shaft say way out nose will receive side-to-side movement rotational movement case gyro sensitivity will have increased make up lack rotational input may perform well should Any vibration helicopter will also transferred gyro could well interpreted yaw movement gyro would try make unnecessary correction tail rotor Any vibration transferred gyro will also cause excessive wear mechanical gyros should also avoided So both reasons gyro body should softmounted helicopterusually servo-mounting tape least 1/ inch thick before gyro body mounted helicopter its best make few simple bench tests transmitter receiver check proper gyro operation placing gyro table rotating left counterclockwise direction correct will move rudder servo slightly nose-right direction moves servo wrong direction simply use reverse switch change direction Almost modern gyros have reverse feature have old gyro just mount upside down will give proper commands During test notice no front ~back gyro Since counters yaw rotation can mounted four sides facing front Just make sure base gyro faces down perpendicular main shaft As gyro rotated slightly workbench notice much movement produced servo Connecting pushrod second hole center servo should about right radios/helicopters nominal amount movement would about /s inch either side neutral have dual-rate gyro set low-rate setting about half value Use sensitivity adjustment make adjustments fine tuning will made flying helicopter June1995 93 Gyros top two Airtronics prototypes lower left dual-rate Hitec model KO SG-88 mini gyro Hot Box has tool storage seat place 12-volt battery factory-installed power panel fuel pump ARISE Muffler Solution converts factory muffler quiet efficient muffler reduced back pressure RED MAX FUEL Super Fuel Engines Power CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON RIGHT Freight free qts gals No handling charge Freight collect drums deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $475 per carton UPS shipments add $800 per carton hazardous materials fee No hazard fee orders 24 gals shipped motorfreight OTY FUEL ORDERED MIXTURE ONE 4 GAL 24 GAL 60 GAL 126 GAL 54 GAL TOTAL GAL CASE PER GAL PER GAL PER GAL DRUM $ AMT RED MAX PREMIUM FUEL Easy beginners powerful experts Available synthetic castor blends ____RED MAX 01393975961906836 25646 _RED MAX5152110641049988912 30806 ____ RED MAX 10 1648 1154 1137 1071 989 35966 ___ REDMAX12 1699 1189 1172 1104 1019 38029E ____ RED MAX 15 1813 1269 1251 1178 1088 42648 _____ RED MAX RACING FUEL Trophy winners planes boats cars loads documented records ____RED MAX 2019201344132512481152 47002 _____ ____RED MAX 2520251418139713161215 51248 _____ ___RED MAX 3021531507148513991292 56408 ____ ____RED MAX 4024081685166115651445 66727 _____ ____RED MAX 5026621864183717311597 77047 ____RED MAX 6029172042201318961750 87366 ____RED MAX 6530482134210319811829 92678 _____ 4-CYCLE FUEL Eliminates detonation & kickback 4-cy engines specially good older models ___ 10-4 CYCLE 1612 1128 1112 1047 967 34489 ____ ___ 15-4 CYCLE 1739 1217 1200 1130 1043 39649 ____ SUPER TIGER 3000 FUEL Best fuel Super Tiger 2000-4000 engines ____ ST 30001648 1154 1137 1071 989 35966 _____ RED MAX DIESEL FUEL Superior diesel back list popular demand customers ___ GAL1776 1184 1167 1100 1015____ *** HELICOPTER FUEL *** Extremely smooth & cool running extra defoamer & new SuPERIOR oil helicopters ____10%1651115611391073991 36089 _____ ____15%18781345132712561167 52049 _____ ____25%22331623160315221420 62368 _____ ____30%23411698167715911484 66718 _____ CUSTOM BLENDED FUEL INGREDIENTS will mix custom fuel formula special engine minimum gallon Fuel ingredients available minimum quantities gallon Call prices items Also special 2-cycle oil big engines such SAX etc Cleaner cooler running oil other market Boat fuel regular price plus 500 PRICES MAY CHANGE WITHOUT NOTICE. easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs secret ingredients keep engine lasting longer running powerfully other 100% money back guarantee Total completely Grand satisfied reason Red Max has power better idle better wear characteristics other fuel However several other aspects helicopter affect gyros overall operation would size airfoil tail rotor blades larger effective blades requiring less gyro input Also increasing tail rotor rpm either speed-up kit increasing engine/main rotor rpm will make tail rotor effective purposes article lets just assume stock helicopter setup being used During flight tests am first concerned overall performance tail rotor before being too concerned sensitivity settings gyro may second hole out servo will give performance need 540 stall turns etc first want make sure tail rotor setting throw end-points want Once done would like have very stable helicopter hover case gyro means holding nose very steady canceling out yaw movements gyro sensitivity set too low nose will wander slightly sensitivity set too high tail will wiggle back forth rapidly reason wiggle just mechanical overshoot gyro initially senses slight yaw movement gives too much correction nose overshoots its intended position Realizing gyro sends another command opposite first again overshoots on Simply turning sensitivity down slightly will stop unwanted movement So stable hover best place set gyro just below wiggle point Once gyro sensitivity set hover will probably notice tail wiggling again go fast forward flight its nice have dual-rate gyro reason tail rotor now wiggles flight because its now efficient due increase air-mass-flow-rate 94 Model Aviation ease efficiency can also seen main rotor system forward flight takes no power fast forward flight does hover So have single-rate gyro compromise setting must made flight regimes dual-rate gyro can set high setting hover lower setting tail does wiggle fast forward flight Setting gyro sensitivity various aerobatics maneuvers 3D flying becomes matter obtaining strongest possible tail rotor wiggling Increase gyro gain until wiggle produced particular maneuver back off sensitivity slightly particularly easy accurate gyro gain adjustable through transmitter advanced computer radios New Products Hot Box produced MAR West Mfg & Dist 3339 Fitzgerald Rd #1 Rancho Cordova CA 95742 combines necessary field-box operations compact durable unit Made almost indestructible plastic makes nice seat top closed can open top produce large storage bin Also included power panel automatically adjusts glow power output compensate flooded engine electric fuel pump master on-off switch particularly like idea being able sit box refuel start helicopterit keeps knees getting wet dirty Extended length gimbal sticks large small end pieces available Guidari R/C International 170 University Ave Suite 12-103 Waterloo Ont N2L 3E9 Canada Unscrew factory sticks extended massive sticks screw place adjustable length provide longer stick precise control rounded plastic ends also feel THE WOODPECKERTM Frst Convertible Multi-Purpose Coveriog Tool Pond NOW YOU CAN COVER LIKE THE PROS No Bubbles No Sags Covering Looks Works Great Long After Iron-On Coverings its Applied No Need Use Film Over Film No Any Prep Problem Easy Use DIE WmDPHXSR fl1EWODPKXERn easily converts will weaken allow apply integrity trims youryour structure choice See Hobby Dealer FirstOr Send CheCk/Money Order Directly — III~IJUNIQUE MODEL PRODUCTS visa & M/C AcceptedCA neodenno add $7755 odes tanRO Sos 2229 Made USAFor OrdelS only-Lake Arrowhead CA 92352-2229 Steal ConoSantian1800-336-5e02Eon Mane lntonnnation Gail 909 336-5602 FAS 909 336-2mg miaAnetaioyYSonny No COOSDEALER iIJOUIRIES WELCOME June 1995 95 comfortable flying thumbs holding two fingers prefer Although have tried imagine could sand plastic ends better contour individual finger shape Although helicopter engines usually come factory mufflers us still have mufflers using airplane engines years ago problem also usually have high back pressure poor job muffling engine noise ARISE 2678 Lower Concession Ormstown Quebec JOS 1 KO Canada has come up ARISE muffler solution bolts onto stock muffler make noticeably quieter reduce back pressure Simply saw off back portion muffler attach muffler solution hardware provided eliminates baffles normally found mufflers reduces noise level contouring exhaust gases special way concerned about noise field would just like quieter helicopter may le low-cost muffler solution R YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING 96 Model Aviation 7j Ti11YI1 Guidari extended gimbal sticks have round plastic end caps non-slip grip Larger size easier grip BUILD & FLY THE jriMAX YCIJRSELF T uomputer rve GrandditralightPart 103 UltralightEasy Construction 1989 Sun-N-Fun Fly-InWood ConstructionVideo Available information send $500 TEAM INC 10790-MA Ivy Bluff Rd Bradyville TN 37026 765-5397
Edition: Model Aviation - 1995/06
Page Numbers: 93, 94, 95, 96
RADIO CONTROL HELICOPTERS WHEN SIT computer start another column try think subject will interest readers task made lot easier receive letter requesting information general interest Luke Christian Rohnert Park CA wrote questions concerning proper setup gyro techniques setup hovering aerobatics some technical reasons gyros behave set up correctly Since have devoted column gyros yet certainly seems like perfect time So lets start some theory basis understanding very valuable part helicopters Until recently gyros same basic design box two spinning wheels additional boxes contained electronics on-off switch gain-control settings reverse switch etc spinning wheels gyro can clearly heard gyro turned act reference keep gyro helicopter pointing constant direction lot battery power also required keep wheels spinning high speed 1000 mAh battery recommended helicopter flying mechanical-type gyro has recently given way new solid state gyro did away spinning wheels generally houses components small box Its important us right now understand principles behind solid-state gyro except no moving parts should last longer less susceptible crash damage Because gyro senses rotational movement versus side-toside movement should mounted close main shaft helicopter possible since helicopter rotates about main shaft gyro mounted too far main shaft say way out nose will receive side-to-side movement rotational movement case gyro sensitivity will have increased make up lack rotational input may perform well should Any vibration helicopter will also transferred gyro could well interpreted yaw movement gyro would try make unnecessary correction tail rotor Any vibration transferred gyro will also cause excessive wear mechanical gyros should also avoided So both reasons gyro body should softmounted helicopterusually servo-mounting tape least 1/ inch thick before gyro body mounted helicopter its best make few simple bench tests transmitter receiver check proper gyro operation placing gyro table rotating left counterclockwise direction correct will move rudder servo slightly nose-right direction moves servo wrong direction simply use reverse switch change direction Almost modern gyros have reverse feature have old gyro just mount upside down will give proper commands During test notice no front ~back gyro Since counters yaw rotation can mounted four sides facing front Just make sure base gyro faces down perpendicular main shaft As gyro rotated slightly workbench notice much movement produced servo Connecting pushrod second hole center servo should about right radios/helicopters nominal amount movement would about /s inch either side neutral have dual-rate gyro set low-rate setting about half value Use sensitivity adjustment make adjustments fine tuning will made flying helicopter June1995 93 Gyros top two Airtronics prototypes lower left dual-rate Hitec model KO SG-88 mini gyro Hot Box has tool storage seat place 12-volt battery factory-installed power panel fuel pump ARISE Muffler Solution converts factory muffler quiet efficient muffler reduced back pressure RED MAX FUEL Super Fuel Engines Power CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON RIGHT Freight free qts gals No handling charge Freight collect drums deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $475 per carton UPS shipments add $800 per carton hazardous materials fee No hazard fee orders 24 gals shipped motorfreight OTY FUEL ORDERED MIXTURE ONE 4 GAL 24 GAL 60 GAL 126 GAL 54 GAL TOTAL GAL CASE PER GAL PER GAL PER GAL DRUM $ AMT RED MAX PREMIUM FUEL Easy beginners powerful experts Available synthetic castor blends ____RED MAX 01393975961906836 25646 _RED MAX5152110641049988912 30806 ____ RED MAX 10 1648 1154 1137 1071 989 35966 ___ REDMAX12 1699 1189 1172 1104 1019 38029E ____ RED MAX 15 1813 1269 1251 1178 1088 42648 _____ RED MAX RACING FUEL Trophy winners planes boats cars loads documented records ____RED MAX 2019201344132512481152 47002 _____ ____RED MAX 2520251418139713161215 51248 _____ ___RED MAX 3021531507148513991292 56408 ____ ____RED MAX 4024081685166115651445 66727 _____ ____RED MAX 5026621864183717311597 77047 ____RED MAX 6029172042201318961750 87366 ____RED MAX 6530482134210319811829 92678 _____ 4-CYCLE FUEL Eliminates detonation & kickback 4-cy engines specially good older models ___ 10-4 CYCLE 1612 1128 1112 1047 967 34489 ____ ___ 15-4 CYCLE 1739 1217 1200 1130 1043 39649 ____ SUPER TIGER 3000 FUEL Best fuel Super Tiger 2000-4000 engines ____ ST 30001648 1154 1137 1071 989 35966 _____ RED MAX DIESEL FUEL Superior diesel back list popular demand customers ___ GAL1776 1184 1167 1100 1015____ *** HELICOPTER FUEL *** Extremely smooth & cool running extra defoamer & new SuPERIOR oil helicopters ____10%1651115611391073991 36089 _____ ____15%18781345132712561167 52049 _____ ____25%22331623160315221420 62368 _____ ____30%23411698167715911484 66718 _____ CUSTOM BLENDED FUEL INGREDIENTS will mix custom fuel formula special engine minimum gallon Fuel ingredients available minimum quantities gallon Call prices items Also special 2-cycle oil big engines such SAX etc Cleaner cooler running oil other market Boat fuel regular price plus 500 PRICES MAY CHANGE WITHOUT NOTICE. easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs secret ingredients keep engine lasting longer running powerfully other 100% money back guarantee Total completely Grand satisfied reason Red Max has power better idle better wear characteristics other fuel However several other aspects helicopter affect gyros overall operation would size airfoil tail rotor blades larger effective blades requiring less gyro input Also increasing tail rotor rpm either speed-up kit increasing engine/main rotor rpm will make tail rotor effective purposes article lets just assume stock helicopter setup being used During flight tests am first concerned overall performance tail rotor before being too concerned sensitivity settings gyro may second hole out servo will give performance need 540 stall turns etc first want make sure tail rotor setting throw end-points want Once done would like have very stable helicopter hover case gyro means holding nose very steady canceling out yaw movements gyro sensitivity set too low nose will wander slightly sensitivity set too high tail will wiggle back forth rapidly reason wiggle just mechanical overshoot gyro initially senses slight yaw movement gives too much correction nose overshoots its intended position Realizing gyro sends another command opposite first again overshoots on Simply turning sensitivity down slightly will stop unwanted movement So stable hover best place set gyro just below wiggle point Once gyro sensitivity set hover will probably notice tail wiggling again go fast forward flight its nice have dual-rate gyro reason tail rotor now wiggles flight because its now efficient due increase air-mass-flow-rate 94 Model Aviation ease efficiency can also seen main rotor system forward flight takes no power fast forward flight does hover So have single-rate gyro compromise setting must made flight regimes dual-rate gyro can set high setting hover lower setting tail does wiggle fast forward flight Setting gyro sensitivity various aerobatics maneuvers 3D flying becomes matter obtaining strongest possible tail rotor wiggling Increase gyro gain until wiggle produced particular maneuver back off sensitivity slightly particularly easy accurate gyro gain adjustable through transmitter advanced computer radios New Products Hot Box produced MAR West Mfg & Dist 3339 Fitzgerald Rd #1 Rancho Cordova CA 95742 combines necessary field-box operations compact durable unit Made almost indestructible plastic makes nice seat top closed can open top produce large storage bin Also included power panel automatically adjusts glow power output compensate flooded engine electric fuel pump master on-off switch particularly like idea being able sit box refuel start helicopterit keeps knees getting wet dirty Extended length gimbal sticks large small end pieces available Guidari R/C International 170 University Ave Suite 12-103 Waterloo Ont N2L 3E9 Canada Unscrew factory sticks extended massive sticks screw place adjustable length provide longer stick precise control rounded plastic ends also feel THE WOODPECKERTM Frst Convertible Multi-Purpose Coveriog Tool Pond NOW YOU CAN COVER LIKE THE PROS No Bubbles No Sags Covering Looks Works Great Long After Iron-On Coverings its Applied No Need Use Film Over Film No Any Prep Problem Easy Use DIE WmDPHXSR fl1EWODPKXERn easily converts will weaken allow apply integrity trims youryour structure choice See Hobby Dealer FirstOr Send CheCk/Money Order Directly — III~IJUNIQUE MODEL PRODUCTS visa & M/C AcceptedCA neodenno add $7755 odes tanRO Sos 2229 Made USAFor OrdelS only-Lake Arrowhead CA 92352-2229 Steal ConoSantian1800-336-5e02Eon Mane lntonnnation Gail 909 336-5602 FAS 909 336-2mg miaAnetaioyYSonny No COOSDEALER iIJOUIRIES WELCOME June 1995 95 comfortable flying thumbs holding two fingers prefer Although have tried imagine could sand plastic ends better contour individual finger shape Although helicopter engines usually come factory mufflers us still have mufflers using airplane engines years ago problem also usually have high back pressure poor job muffling engine noise ARISE 2678 Lower Concession Ormstown Quebec JOS 1 KO Canada has come up ARISE muffler solution bolts onto stock muffler make noticeably quieter reduce back pressure Simply saw off back portion muffler attach muffler solution hardware provided eliminates baffles normally found mufflers reduces noise level contouring exhaust gases special way concerned about noise field would just like quieter helicopter may le low-cost muffler solution R YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING 96 Model Aviation 7j Ti11YI1 Guidari extended gimbal sticks have round plastic end caps non-slip grip Larger size easier grip BUILD & FLY THE jriMAX YCIJRSELF T uomputer rve GrandditralightPart 103 UltralightEasy Construction 1989 Sun-N-Fun Fly-InWood ConstructionVideo Available information send $500 TEAM INC 10790-MA Ivy Bluff Rd Bradyville TN 37026 765-5397
Edition: Model Aviation - 1995/06
Page Numbers: 93, 94, 95, 96
RADIO CONTROL HELICOPTERS WHEN SIT computer start another column try think subject will interest readers task made lot easier receive letter requesting information general interest Luke Christian Rohnert Park CA wrote questions concerning proper setup gyro techniques setup hovering aerobatics some technical reasons gyros behave set up correctly Since have devoted column gyros yet certainly seems like perfect time So lets start some theory basis understanding very valuable part helicopters Until recently gyros same basic design box two spinning wheels additional boxes contained electronics on-off switch gain-control settings reverse switch etc spinning wheels gyro can clearly heard gyro turned act reference keep gyro helicopter pointing constant direction lot battery power also required keep wheels spinning high speed 1000 mAh battery recommended helicopter flying mechanical-type gyro has recently given way new solid state gyro did away spinning wheels generally houses components small box Its important us right now understand principles behind solid-state gyro except no moving parts should last longer less susceptible crash damage Because gyro senses rotational movement versus side-toside movement should mounted close main shaft helicopter possible since helicopter rotates about main shaft gyro mounted too far main shaft say way out nose will receive side-to-side movement rotational movement case gyro sensitivity will have increased make up lack rotational input may perform well should Any vibration helicopter will also transferred gyro could well interpreted yaw movement gyro would try make unnecessary correction tail rotor Any vibration transferred gyro will also cause excessive wear mechanical gyros should also avoided So both reasons gyro body should softmounted helicopterusually servo-mounting tape least 1/ inch thick before gyro body mounted helicopter its best make few simple bench tests transmitter receiver check proper gyro operation placing gyro table rotating left counterclockwise direction correct will move rudder servo slightly nose-right direction moves servo wrong direction simply use reverse switch change direction Almost modern gyros have reverse feature have old gyro just mount upside down will give proper commands During test notice no front ~back gyro Since counters yaw rotation can mounted four sides facing front Just make sure base gyro faces down perpendicular main shaft As gyro rotated slightly workbench notice much movement produced servo Connecting pushrod second hole center servo should about right radios/helicopters nominal amount movement would about /s inch either side neutral have dual-rate gyro set low-rate setting about half value Use sensitivity adjustment make adjustments fine tuning will made flying helicopter June1995 93 Gyros top two Airtronics prototypes lower left dual-rate Hitec model KO SG-88 mini gyro Hot Box has tool storage seat place 12-volt battery factory-installed power panel fuel pump ARISE Muffler Solution converts factory muffler quiet efficient muffler reduced back pressure RED MAX FUEL Super Fuel Engines Power CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON RIGHT Freight free qts gals No handling charge Freight collect drums deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $475 per carton UPS shipments add $800 per carton hazardous materials fee No hazard fee orders 24 gals shipped motorfreight OTY FUEL ORDERED MIXTURE ONE 4 GAL 24 GAL 60 GAL 126 GAL 54 GAL TOTAL GAL CASE PER GAL PER GAL PER GAL DRUM $ AMT RED MAX PREMIUM FUEL Easy beginners powerful experts Available synthetic castor blends ____RED MAX 01393975961906836 25646 _RED MAX5152110641049988912 30806 ____ RED MAX 10 1648 1154 1137 1071 989 35966 ___ REDMAX12 1699 1189 1172 1104 1019 38029E ____ RED MAX 15 1813 1269 1251 1178 1088 42648 _____ RED MAX RACING FUEL Trophy winners planes boats cars loads documented records ____RED MAX 2019201344132512481152 47002 _____ ____RED MAX 2520251418139713161215 51248 _____ ___RED MAX 3021531507148513991292 56408 ____ ____RED MAX 4024081685166115651445 66727 _____ ____RED MAX 5026621864183717311597 77047 ____RED MAX 6029172042201318961750 87366 ____RED MAX 6530482134210319811829 92678 _____ 4-CYCLE FUEL Eliminates detonation & kickback 4-cy engines specially good older models ___ 10-4 CYCLE 1612 1128 1112 1047 967 34489 ____ ___ 15-4 CYCLE 1739 1217 1200 1130 1043 39649 ____ SUPER TIGER 3000 FUEL Best fuel Super Tiger 2000-4000 engines ____ ST 30001648 1154 1137 1071 989 35966 _____ RED MAX DIESEL FUEL Superior diesel back list popular demand customers ___ GAL1776 1184 1167 1100 1015____ *** HELICOPTER FUEL *** Extremely smooth & cool running extra defoamer & new SuPERIOR oil helicopters ____10%1651115611391073991 36089 _____ ____15%18781345132712561167 52049 _____ ____25%22331623160315221420 62368 _____ ____30%23411698167715911484 66718 _____ CUSTOM BLENDED FUEL INGREDIENTS will mix custom fuel formula special engine minimum gallon Fuel ingredients available minimum quantities gallon Call prices items Also special 2-cycle oil big engines such SAX etc Cleaner cooler running oil other market Boat fuel regular price plus 500 PRICES MAY CHANGE WITHOUT NOTICE. easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs secret ingredients keep engine lasting longer running powerfully other 100% money back guarantee Total completely Grand satisfied reason Red Max has power better idle better wear characteristics other fuel However several other aspects helicopter affect gyros overall operation would size airfoil tail rotor blades larger effective blades requiring less gyro input Also increasing tail rotor rpm either speed-up kit increasing engine/main rotor rpm will make tail rotor effective purposes article lets just assume stock helicopter setup being used During flight tests am first concerned overall performance tail rotor before being too concerned sensitivity settings gyro may second hole out servo will give performance need 540 stall turns etc first want make sure tail rotor setting throw end-points want Once done would like have very stable helicopter hover case gyro means holding nose very steady canceling out yaw movements gyro sensitivity set too low nose will wander slightly sensitivity set too high tail will wiggle back forth rapidly reason wiggle just mechanical overshoot gyro initially senses slight yaw movement gives too much correction nose overshoots its intended position Realizing gyro sends another command opposite first again overshoots on Simply turning sensitivity down slightly will stop unwanted movement So stable hover best place set gyro just below wiggle point Once gyro sensitivity set hover will probably notice tail wiggling again go fast forward flight its nice have dual-rate gyro reason tail rotor now wiggles flight because its now efficient due increase air-mass-flow-rate 94 Model Aviation ease efficiency can also seen main rotor system forward flight takes no power fast forward flight does hover So have single-rate gyro compromise setting must made flight regimes dual-rate gyro can set high setting hover lower setting tail does wiggle fast forward flight Setting gyro sensitivity various aerobatics maneuvers 3D flying becomes matter obtaining strongest possible tail rotor wiggling Increase gyro gain until wiggle produced particular maneuver back off sensitivity slightly particularly easy accurate gyro gain adjustable through transmitter advanced computer radios New Products Hot Box produced MAR West Mfg & Dist 3339 Fitzgerald Rd #1 Rancho Cordova CA 95742 combines necessary field-box operations compact durable unit Made almost indestructible plastic makes nice seat top closed can open top produce large storage bin Also included power panel automatically adjusts glow power output compensate flooded engine electric fuel pump master on-off switch particularly like idea being able sit box refuel start helicopterit keeps knees getting wet dirty Extended length gimbal sticks large small end pieces available Guidari R/C International 170 University Ave Suite 12-103 Waterloo Ont N2L 3E9 Canada Unscrew factory sticks extended massive sticks screw place adjustable length provide longer stick precise control rounded plastic ends also feel THE WOODPECKERTM Frst Convertible Multi-Purpose Coveriog Tool Pond NOW YOU CAN COVER LIKE THE PROS No Bubbles No Sags Covering Looks Works Great Long After Iron-On Coverings its Applied No Need Use Film Over Film No Any Prep Problem Easy Use DIE WmDPHXSR fl1EWODPKXERn easily converts will weaken allow apply integrity trims youryour structure choice See Hobby Dealer FirstOr Send CheCk/Money Order Directly — III~IJUNIQUE MODEL PRODUCTS visa & M/C AcceptedCA neodenno add $7755 odes tanRO Sos 2229 Made USAFor OrdelS only-Lake Arrowhead CA 92352-2229 Steal ConoSantian1800-336-5e02Eon Mane lntonnnation Gail 909 336-5602 FAS 909 336-2mg miaAnetaioyYSonny No COOSDEALER iIJOUIRIES WELCOME June 1995 95 comfortable flying thumbs holding two fingers prefer Although have tried imagine could sand plastic ends better contour individual finger shape Although helicopter engines usually come factory mufflers us still have mufflers using airplane engines years ago problem also usually have high back pressure poor job muffling engine noise ARISE 2678 Lower Concession Ormstown Quebec JOS 1 KO Canada has come up ARISE muffler solution bolts onto stock muffler make noticeably quieter reduce back pressure Simply saw off back portion muffler attach muffler solution hardware provided eliminates baffles normally found mufflers reduces noise level contouring exhaust gases special way concerned about noise field would just like quieter helicopter may le low-cost muffler solution R YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING 96 Model Aviation 7j Ti11YI1 Guidari extended gimbal sticks have round plastic end caps non-slip grip Larger size easier grip BUILD & FLY THE jriMAX YCIJRSELF T uomputer rve GrandditralightPart 103 UltralightEasy Construction 1989 Sun-N-Fun Fly-InWood ConstructionVideo Available information send $500 TEAM INC 10790-MA Ivy Bluff Rd Bradyville TN 37026 765-5397
Edition: Model Aviation - 1995/06
Page Numbers: 93, 94, 95, 96
RADIO CONTROL HELICOPTERS WHEN SIT computer start another column try think subject will interest readers task made lot easier receive letter requesting information general interest Luke Christian Rohnert Park CA wrote questions concerning proper setup gyro techniques setup hovering aerobatics some technical reasons gyros behave set up correctly Since have devoted column gyros yet certainly seems like perfect time So lets start some theory basis understanding very valuable part helicopters Until recently gyros same basic design box two spinning wheels additional boxes contained electronics on-off switch gain-control settings reverse switch etc spinning wheels gyro can clearly heard gyro turned act reference keep gyro helicopter pointing constant direction lot battery power also required keep wheels spinning high speed 1000 mAh battery recommended helicopter flying mechanical-type gyro has recently given way new solid state gyro did away spinning wheels generally houses components small box Its important us right now understand principles behind solid-state gyro except no moving parts should last longer less susceptible crash damage Because gyro senses rotational movement versus side-toside movement should mounted close main shaft helicopter possible since helicopter rotates about main shaft gyro mounted too far main shaft say way out nose will receive side-to-side movement rotational movement case gyro sensitivity will have increased make up lack rotational input may perform well should Any vibration helicopter will also transferred gyro could well interpreted yaw movement gyro would try make unnecessary correction tail rotor Any vibration transferred gyro will also cause excessive wear mechanical gyros should also avoided So both reasons gyro body should softmounted helicopterusually servo-mounting tape least 1/ inch thick before gyro body mounted helicopter its best make few simple bench tests transmitter receiver check proper gyro operation placing gyro table rotating left counterclockwise direction correct will move rudder servo slightly nose-right direction moves servo wrong direction simply use reverse switch change direction Almost modern gyros have reverse feature have old gyro just mount upside down will give proper commands During test notice no front ~back gyro Since counters yaw rotation can mounted four sides facing front Just make sure base gyro faces down perpendicular main shaft As gyro rotated slightly workbench notice much movement produced servo Connecting pushrod second hole center servo should about right radios/helicopters nominal amount movement would about /s inch either side neutral have dual-rate gyro set low-rate setting about half value Use sensitivity adjustment make adjustments fine tuning will made flying helicopter June1995 93 Gyros top two Airtronics prototypes lower left dual-rate Hitec model KO SG-88 mini gyro Hot Box has tool storage seat place 12-volt battery factory-installed power panel fuel pump ARISE Muffler Solution converts factory muffler quiet efficient muffler reduced back pressure RED MAX FUEL Super Fuel Engines Power CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON RIGHT Freight free qts gals No handling charge Freight collect drums deduct 3% prepay Mix qty Total qty determines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $475 per carton UPS shipments add $800 per carton hazardous materials fee No hazard fee orders 24 gals shipped motorfreight OTY FUEL ORDERED MIXTURE ONE 4 GAL 24 GAL 60 GAL 126 GAL 54 GAL TOTAL GAL CASE PER GAL PER GAL PER GAL DRUM $ AMT RED MAX PREMIUM FUEL Easy beginners powerful experts Available synthetic castor blends ____RED MAX 01393975961906836 25646 _RED MAX5152110641049988912 30806 ____ RED MAX 10 1648 1154 1137 1071 989 35966 ___ REDMAX12 1699 1189 1172 1104 1019 38029E ____ RED MAX 15 1813 1269 1251 1178 1088 42648 _____ RED MAX RACING FUEL Trophy winners planes boats cars loads documented records ____RED MAX 2019201344132512481152 47002 _____ ____RED MAX 2520251418139713161215 51248 _____ ___RED MAX 3021531507148513991292 56408 ____ ____RED MAX 4024081685166115651445 66727 _____ ____RED MAX 5026621864183717311597 77047 ____RED MAX 6029172042201318961750 87366 ____RED MAX 6530482134210319811829 92678 _____ 4-CYCLE FUEL Eliminates detonation & kickback 4-cy engines specially good older models ___ 10-4 CYCLE 1612 1128 1112 1047 967 34489 ____ ___ 15-4 CYCLE 1739 1217 1200 1130 1043 39649 ____ SUPER TIGER 3000 FUEL Best fuel Super Tiger 2000-4000 engines ____ ST 30001648 1154 1137 1071 989 35966 _____ RED MAX DIESEL FUEL Superior diesel back list popular demand customers ___ GAL1776 1184 1167 1100 1015____ *** HELICOPTER FUEL *** Extremely smooth & cool running extra defoamer & new SuPERIOR oil helicopters ____10%1651115611391073991 36089 _____ ____15%18781345132712561167 52049 _____ ____25%22331623160315221420 62368 _____ ____30%23411698167715911484 66718 _____ CUSTOM BLENDED FUEL INGREDIENTS will mix custom fuel formula special engine minimum gallon Fuel ingredients available minimum quantities gallon Call prices items Also special 2-cycle oil big engines such SAX etc Cleaner cooler running oil other market Boat fuel regular price plus 500 PRICES MAY CHANGE WITHOUT NOTICE. easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs secret ingredients keep engine lasting longer running powerfully other 100% money back guarantee Total completely Grand satisfied reason Red Max has power better idle better wear characteristics other fuel However several other aspects helicopter affect gyros overall operation would size airfoil tail rotor blades larger effective blades requiring less gyro input Also increasing tail rotor rpm either speed-up kit increasing engine/main rotor rpm will make tail rotor effective purposes article lets just assume stock helicopter setup being used During flight tests am first concerned overall performance tail rotor before being too concerned sensitivity settings gyro may second hole out servo will give performance need 540 stall turns etc first want make sure tail rotor setting throw end-points want Once done would like have very stable helicopter hover case gyro means holding nose very steady canceling out yaw movements gyro sensitivity set too low nose will wander slightly sensitivity set too high tail will wiggle back forth rapidly reason wiggle just mechanical overshoot gyro initially senses slight yaw movement gives too much correction nose overshoots its intended position Realizing gyro sends another command opposite first again overshoots on Simply turning sensitivity down slightly will stop unwanted movement So stable hover best place set gyro just below wiggle point Once gyro sensitivity set hover will probably notice tail wiggling again go fast forward flight its nice have dual-rate gyro reason tail rotor now wiggles flight because its now efficient due increase air-mass-flow-rate 94 Model Aviation ease efficiency can also seen main rotor system forward flight takes no power fast forward flight does hover So have single-rate gyro compromise setting must made flight regimes dual-rate gyro can set high setting hover lower setting tail does wiggle fast forward flight Setting gyro sensitivity various aerobatics maneuvers 3D flying becomes matter obtaining strongest possible tail rotor wiggling Increase gyro gain until wiggle produced particular maneuver back off sensitivity slightly particularly easy accurate gyro gain adjustable through transmitter advanced computer radios New Products Hot Box produced MAR West Mfg & Dist 3339 Fitzgerald Rd #1 Rancho Cordova CA 95742 combines necessary field-box operations compact durable unit Made almost indestructible plastic makes nice seat top closed can open top produce large storage bin Also included power panel automatically adjusts glow power output compensate flooded engine electric fuel pump master on-off switch particularly like idea being able sit box refuel start helicopterit keeps knees getting wet dirty Extended length gimbal sticks large small end pieces available Guidari R/C International 170 University Ave Suite 12-103 Waterloo Ont N2L 3E9 Canada Unscrew factory sticks extended massive sticks screw place adjustable length provide longer stick precise control rounded plastic ends also feel THE WOODPECKERTM Frst Convertible Multi-Purpose Coveriog Tool Pond NOW YOU CAN COVER LIKE THE PROS No Bubbles No Sags Covering Looks Works Great Long After Iron-On Coverings its Applied No Need Use Film Over Film No Any Prep Problem Easy Use DIE WmDPHXSR fl1EWODPKXERn easily converts will weaken allow apply integrity trims youryour structure choice See Hobby Dealer FirstOr Send CheCk/Money Order Directly — III~IJUNIQUE MODEL PRODUCTS visa & M/C AcceptedCA neodenno add $7755 odes tanRO Sos 2229 Made USAFor OrdelS only-Lake Arrowhead CA 92352-2229 Steal ConoSantian1800-336-5e02Eon Mane lntonnnation Gail 909 336-5602 FAS 909 336-2mg miaAnetaioyYSonny No COOSDEALER iIJOUIRIES WELCOME June 1995 95 comfortable flying thumbs holding two fingers prefer Although have tried imagine could sand plastic ends better contour individual finger shape Although helicopter engines usually come factory mufflers us still have mufflers using airplane engines years ago problem also usually have high back pressure poor job muffling engine noise ARISE 2678 Lower Concession Ormstown Quebec JOS 1 KO Canada has come up ARISE muffler solution bolts onto stock muffler make noticeably quieter reduce back pressure Simply saw off back portion muffler attach muffler solution hardware provided eliminates baffles normally found mufflers reduces noise level contouring exhaust gases special way concerned about noise field would just like quieter helicopter may le low-cost muffler solution R YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING 96 Model Aviation 7j Ti11YI1 Guidari extended gimbal sticks have round plastic end caps non-slip grip Larger size easier grip BUILD & FLY THE jriMAX YCIJRSELF T uomputer rve GrandditralightPart 103 UltralightEasy Construction 1989 Sun-N-Fun Fly-InWood ConstructionVideo Available information send $500 TEAM INC 10790-MA Ivy Bluff Rd Bradyville TN 37026 765-5397