RADIO CONTROL HELICOPTERS U JTI1 THE NEW JR ERGO 32 46-size helicopter JRs recent entry helicopter field Until now JR has known its worldwide reputation leading manufacturer radio control equipment company keeps cutting edge new design features continuing maintain outstanding reliability dont know JR decided begin designing building helicopters such well-known respected company can add enjoyment hobby fine products Since have just flaished building Ergo Ill give impressions kit issue next issue Ill cover performs air new Webra 33 engine Ergo available either 30 46 version 30 size accepts engines 32 36 range will appeal novice intermediate flier wants learn fly move up basic aerobatics Once basic maneuvers have mastered Ergo can convened 46 version unlimited aerobatics 3-D flying first time year Nats will feature Freestyle 3-D category Im sure will see type flying becoming popular over country first thing look new helicopter kit instruction manualhow well written accurately easily assemble helicopter am pleased report Ergo instructions some best have seen first page points modeler AMA goes Ergos main features includes illustrations items will required complete kit building supplies field equipment included kit basic hardware identification make sure correct pans used during construction Parts identification has further enhanced having parts separated large numbered bags correspond building sequence small hardware step separated smaller bags instructions suggest placing smaller parts something like coffee can keep getting lost prefer use tin used baking dozen muffins keeps smaller parts well separated especially several bags parts can easily identified remainder instruction manual has diagrams page step-by-step building instructions followed recommended helicopter radio adjustments get off ground correct setup Jaitial setup made easier because control linkages preassembled factory other linkages shown full-scale building instructions Although stated instructions ball links should snapped onto balls JR Propo insignia facing upotherwise links almost impossible snap onto balls Although Ergo doesnt offer helicopter-design breakthroughs does combine some best features current helicopter design JRs own improvements make Ergo easy assemble maintain Some design features like include Modular main frame construction using flat side frames improves models overall strength ease maintenance dressed up Ergo using T&T Engineerings Fiaish Caps 3mm bolts Available purple gold make helicopter distinctive October1996 103 JR Ergo strong straight modular construction top servos operate belicranks basic flight functions rear-facing Webra 33 mounts easily uses new JR Propo muffler fuel tank padded reduce fuel foaming Rear gyro mount leaves room up front other radio gear metal standoff front tailboom bracket mounts canopy combination metallcomposite head smooth precise lacks thrust bearings linkages preassembled one-way hex starting shaft very short eliminates sources high-frequency vibration other helicopters belt-driven tail rotor easy adjust maintain eliminates need expensive tube-drive system also reduces repair costs after mishap self-aligning all-metal clutch reduces vibration clutch lining factory installed ease construction rear-facing engine provides easy access glow plug forward-mounted fuel tank rests cushion molded foam reduce fuel foaming canopy made plastic appears almost indestructible easily snaps onto helicopter four places solid fit flexible landing gear provides excellent ground clearance holds tailboom level tail rotor well away ground good design feature rough-field flying However some points future versions Ergo may able improve kit does supply hex starter extension cant start engine head lacks thrust bearings mixing levers use bushings instead bearings tailboom carrier mounts tailboom main frame horizontal fin clamp massive plastic pieces Although Im sure very strong add weight helicopter main-blade axle transmits flight loads two rubber dampeners Having center bushing axle would transfer forces head thereby relieving stress danpeners Although major points show always room improvement Im very impressed design quality Ergo expect will excellent helicopter novice intermediate flier 30-size engine Ill have flight report next issue Readers Letter Most letters get someone having problem helicopter would like some advice once-in-a-while get letter offering help someone has particular problem has found solution received such letter recently Dan Finucane Arcadia Wisconsin problem X-Cell 60 belonged friend Dan took time effort hand-write three-page letter describing both problem solution can share experience two problems helicopter 1 blades continually going out track 2 tail vibration solve tracking problem head rebuilt balanced bearings checked lubricated nothing out ordinary found HEAVYWEIGHTS Getting Nervous Lightweight Realig Tough have testing new 6 treaded lightweight wheels new 45# P47 Thunderbolt have reacted well landing helping absorb stress has no tendency peel ground loops have greatly enhanced retract operation new wheels Godsend have Winner DBernier Mebane NC Made USA Aluminum Wheel Covers Dress up aircraft DU-BROs new aluminum Wheel Covers semidomed wheel covers allow clearance over wheel collars mount securely just minutes Designed fit 4-6 Treaded Lightweight TV Series Wheels wheel covers sure add touch class aircraft DU-BRO Name Can Count 480 Bonner Rd PO Box 815 Wauconda IL 60084 104 Model Aviation -driven tail rotor smooth easy maintain molded fins rotor blades bolt seem very durable Available 4 6 SizesWheel Covers BaIsaNOVA Just like Brazilian dance Bossa Nova loosely named Morris Hobbies BaIsaNOVA fun lively model airplane Tom Stryker designed BaIsaNOVA mainstream modeler wants easy build fly 40-size model insists good looks unlimited aerobatic capabilities thick fully-symmetrical wing keeps model sub-sonic speeds allowing crisp rolls loops snaps knife-edges exciting combinations thereof large yet stylish side area makes BaIsaNOVA perfect model show off crowd-pleasing knife-edge loops Stalls very gentle predictable landings slow stable engine really like BaIsaNOVA powerful MVVS 40 Couple optional MVVS tuned silencer becomes partially hidden bottom fuse lage have excellent performer ample cowl area provides room soft-mounting engine extra noise reduction desired simple 4 channel radio 5 servos 4 standard servos mini throttle servo required turn desires eye-pleasing maneuvers kit features Balsa Lite-ply construction crisp die-cut parts photo-illus trated construction manual CAD-drawn full-size plans make building easy enjoyable kit contains plastic wheel pants extensive hardware package includes landing gear control horns pushrods hinges other necessities box label includes shopping list additional items needed complete BalsaNOVA introductory price BaIsaNOVA $8995 Order MVVS 40 standard muffler low combo price $21995 Replace stock muffler MVVS tuned silencer combo price $23995 An instructional flying video also available See local hobby dealer order direct Morris Hobbies pleasing lines pleasing price tag should make BaIsaNOVA big hit both hobby shop flying field Introductory Price $8995 Sh pp ng Hand ng $5 95 KY d addtt tnTh Dealer Iiiqniries Invited Safe Easy RC Flying has favorite beginning pitots Instructors six step tested program completely presented easy understand guide Chapters include Aerodynamics Selecting trainer plane c flight Performing take offs Landing patterns Safely landing plane Leaming about Safety Cost $995 Specifications Wing Span52-38 Wing Area675 Sq Ins Length52 Weight5 55 lbs Engine40 50 Radio4 Ch w/5 Servos Building Flying RC Sajlplanes Electric Gliders explores intricacies different type RIC flying Chapters include Landing methods Thermal flying Slope soaring Operating electric motors power systems Choosing batteries charging Building tips techniques Cost $1L95 See yout local dealet call toll fre 18008266054 502-451-0901 Fax 502-451-8793 blades closely inspected rebalanced Again no problem found out-of-track condition still present Almost last resort Dan decided check static tracking blades found off inserted Miniature Aircraft Static Tracking Inserts part #0563 adjust static tracking Sure enough solved out-oftrack condition Although Im glad solved problem Dan notice recently rebuilt head static tracking X Cell largely controlled fit blade axle #0315 rubber 0-rings #0323 having similar problem 0-rings may worn old could cause problem like lubricate 0-rings during installation have using petroleum jelly years great success An automotive-transmission mechanic once told used petroleum jelly initial lubrication installing rubber plastic parts transmissions because lubricated distorting parts tried suggestion liked Maybe will too Dan could find solution tailvibration problem called Don Chapman some advice Don thought front transmission might have out alignment putting strain other parts tail-rotor system check models alignment Dan used Front Transmission Alignment Tool part #0507 sure enough out alignment Since two relatively inexpensive tools solved helicopter problems Dan certainly recommends other fliers Dan also recommends fliers have radios checked out once year Dan does winter months hes flying feels has probably saved mishap two During last checkup servos leads lengthened could use X-Cells elevator function using extension Eliminating extra connectors provides just little safety insurance Dan ended letter nice thought could live everyone would keep helping other would wonderful hobby Sport Competition Aerobatics comprehensive manual takes pilot exciting world RC aerobatics intricacies aerobatic flight presented easy understand steps have proven time again under actual training conditions Chapters include Choosing acrobatic airplanes Radio selection sting precisely trimming airplanes ral aerobatic maneuvers detailed instructions Contest preparation actual competition rips order now pocket guide containing reproduction of aerobatic maneuvers will includedfree purchase Actual price $299 Cost $1395 Including yourfree pocket guide Call Nighthawk Publishing 1-800-390-HAWK Shipping & Handling charge $200 added book purchased 106 Model Aviation
Edition: Model Aviation - 1996/10
Page Numbers: 103, 104, 106
RADIO CONTROL HELICOPTERS U JTI1 THE NEW JR ERGO 32 46-size helicopter JRs recent entry helicopter field Until now JR has known its worldwide reputation leading manufacturer radio control equipment company keeps cutting edge new design features continuing maintain outstanding reliability dont know JR decided begin designing building helicopters such well-known respected company can add enjoyment hobby fine products Since have just flaished building Ergo Ill give impressions kit issue next issue Ill cover performs air new Webra 33 engine Ergo available either 30 46 version 30 size accepts engines 32 36 range will appeal novice intermediate flier wants learn fly move up basic aerobatics Once basic maneuvers have mastered Ergo can convened 46 version unlimited aerobatics 3-D flying first time year Nats will feature Freestyle 3-D category Im sure will see type flying becoming popular over country first thing look new helicopter kit instruction manualhow well written accurately easily assemble helicopter am pleased report Ergo instructions some best have seen first page points modeler AMA goes Ergos main features includes illustrations items will required complete kit building supplies field equipment included kit basic hardware identification make sure correct pans used during construction Parts identification has further enhanced having parts separated large numbered bags correspond building sequence small hardware step separated smaller bags instructions suggest placing smaller parts something like coffee can keep getting lost prefer use tin used baking dozen muffins keeps smaller parts well separated especially several bags parts can easily identified remainder instruction manual has diagrams page step-by-step building instructions followed recommended helicopter radio adjustments get off ground correct setup Jaitial setup made easier because control linkages preassembled factory other linkages shown full-scale building instructions Although stated instructions ball links should snapped onto balls JR Propo insignia facing upotherwise links almost impossible snap onto balls Although Ergo doesnt offer helicopter-design breakthroughs does combine some best features current helicopter design JRs own improvements make Ergo easy assemble maintain Some design features like include Modular main frame construction using flat side frames improves models overall strength ease maintenance dressed up Ergo using T&T Engineerings Fiaish Caps 3mm bolts Available purple gold make helicopter distinctive October1996 103 JR Ergo strong straight modular construction top servos operate belicranks basic flight functions rear-facing Webra 33 mounts easily uses new JR Propo muffler fuel tank padded reduce fuel foaming Rear gyro mount leaves room up front other radio gear metal standoff front tailboom bracket mounts canopy combination metallcomposite head smooth precise lacks thrust bearings linkages preassembled one-way hex starting shaft very short eliminates sources high-frequency vibration other helicopters belt-driven tail rotor easy adjust maintain eliminates need expensive tube-drive system also reduces repair costs after mishap self-aligning all-metal clutch reduces vibration clutch lining factory installed ease construction rear-facing engine provides easy access glow plug forward-mounted fuel tank rests cushion molded foam reduce fuel foaming canopy made plastic appears almost indestructible easily snaps onto helicopter four places solid fit flexible landing gear provides excellent ground clearance holds tailboom level tail rotor well away ground good design feature rough-field flying However some points future versions Ergo may able improve kit does supply hex starter extension cant start engine head lacks thrust bearings mixing levers use bushings instead bearings tailboom carrier mounts tailboom main frame horizontal fin clamp massive plastic pieces Although Im sure very strong add weight helicopter main-blade axle transmits flight loads two rubber dampeners Having center bushing axle would transfer forces head thereby relieving stress danpeners Although major points show always room improvement Im very impressed design quality Ergo expect will excellent helicopter novice intermediate flier 30-size engine Ill have flight report next issue Readers Letter Most letters get someone having problem helicopter would like some advice once-in-a-while get letter offering help someone has particular problem has found solution received such letter recently Dan Finucane Arcadia Wisconsin problem X-Cell 60 belonged friend Dan took time effort hand-write three-page letter describing both problem solution can share experience two problems helicopter 1 blades continually going out track 2 tail vibration solve tracking problem head rebuilt balanced bearings checked lubricated nothing out ordinary found HEAVYWEIGHTS Getting Nervous Lightweight Realig Tough have testing new 6 treaded lightweight wheels new 45# P47 Thunderbolt have reacted well landing helping absorb stress has no tendency peel ground loops have greatly enhanced retract operation new wheels Godsend have Winner DBernier Mebane NC Made USA Aluminum Wheel Covers Dress up aircraft DU-BROs new aluminum Wheel Covers semidomed wheel covers allow clearance over wheel collars mount securely just minutes Designed fit 4-6 Treaded Lightweight TV Series Wheels wheel covers sure add touch class aircraft DU-BRO Name Can Count 480 Bonner Rd PO Box 815 Wauconda IL 60084 104 Model Aviation -driven tail rotor smooth easy maintain molded fins rotor blades bolt seem very durable Available 4 6 SizesWheel Covers BaIsaNOVA Just like Brazilian dance Bossa Nova loosely named Morris Hobbies BaIsaNOVA fun lively model airplane Tom Stryker designed BaIsaNOVA mainstream modeler wants easy build fly 40-size model insists good looks unlimited aerobatic capabilities thick fully-symmetrical wing keeps model sub-sonic speeds allowing crisp rolls loops snaps knife-edges exciting combinations thereof large yet stylish side area makes BaIsaNOVA perfect model show off crowd-pleasing knife-edge loops Stalls very gentle predictable landings slow stable engine really like BaIsaNOVA powerful MVVS 40 Couple optional MVVS tuned silencer becomes partially hidden bottom fuse lage have excellent performer ample cowl area provides room soft-mounting engine extra noise reduction desired simple 4 channel radio 5 servos 4 standard servos mini throttle servo required turn desires eye-pleasing maneuvers kit features Balsa Lite-ply construction crisp die-cut parts photo-illus trated construction manual CAD-drawn full-size plans make building easy enjoyable kit contains plastic wheel pants extensive hardware package includes landing gear control horns pushrods hinges other necessities box label includes shopping list additional items needed complete BalsaNOVA introductory price BaIsaNOVA $8995 Order MVVS 40 standard muffler low combo price $21995 Replace stock muffler MVVS tuned silencer combo price $23995 An instructional flying video also available See local hobby dealer order direct Morris Hobbies pleasing lines pleasing price tag should make BaIsaNOVA big hit both hobby shop flying field Introductory Price $8995 Sh pp ng Hand ng $5 95 KY d addtt tnTh Dealer Iiiqniries Invited Safe Easy RC Flying has favorite beginning pitots Instructors six step tested program completely presented easy understand guide Chapters include Aerodynamics Selecting trainer plane c flight Performing take offs Landing patterns Safely landing plane Leaming about Safety Cost $995 Specifications Wing Span52-38 Wing Area675 Sq Ins Length52 Weight5 55 lbs Engine40 50 Radio4 Ch w/5 Servos Building Flying RC Sajlplanes Electric Gliders explores intricacies different type RIC flying Chapters include Landing methods Thermal flying Slope soaring Operating electric motors power systems Choosing batteries charging Building tips techniques Cost $1L95 See yout local dealet call toll fre 18008266054 502-451-0901 Fax 502-451-8793 blades closely inspected rebalanced Again no problem found out-of-track condition still present Almost last resort Dan decided check static tracking blades found off inserted Miniature Aircraft Static Tracking Inserts part #0563 adjust static tracking Sure enough solved out-oftrack condition Although Im glad solved problem Dan notice recently rebuilt head static tracking X Cell largely controlled fit blade axle #0315 rubber 0-rings #0323 having similar problem 0-rings may worn old could cause problem like lubricate 0-rings during installation have using petroleum jelly years great success An automotive-transmission mechanic once told used petroleum jelly initial lubrication installing rubber plastic parts transmissions because lubricated distorting parts tried suggestion liked Maybe will too Dan could find solution tailvibration problem called Don Chapman some advice Don thought front transmission might have out alignment putting strain other parts tail-rotor system check models alignment Dan used Front Transmission Alignment Tool part #0507 sure enough out alignment Since two relatively inexpensive tools solved helicopter problems Dan certainly recommends other fliers Dan also recommends fliers have radios checked out once year Dan does winter months hes flying feels has probably saved mishap two During last checkup servos leads lengthened could use X-Cells elevator function using extension Eliminating extra connectors provides just little safety insurance Dan ended letter nice thought could live everyone would keep helping other would wonderful hobby Sport Competition Aerobatics comprehensive manual takes pilot exciting world RC aerobatics intricacies aerobatic flight presented easy understand steps have proven time again under actual training conditions Chapters include Choosing acrobatic airplanes Radio selection sting precisely trimming airplanes ral aerobatic maneuvers detailed instructions Contest preparation actual competition rips order now pocket guide containing reproduction of aerobatic maneuvers will includedfree purchase Actual price $299 Cost $1395 Including yourfree pocket guide Call Nighthawk Publishing 1-800-390-HAWK Shipping & Handling charge $200 added book purchased 106 Model Aviation
Edition: Model Aviation - 1996/10
Page Numbers: 103, 104, 106
RADIO CONTROL HELICOPTERS U JTI1 THE NEW JR ERGO 32 46-size helicopter JRs recent entry helicopter field Until now JR has known its worldwide reputation leading manufacturer radio control equipment company keeps cutting edge new design features continuing maintain outstanding reliability dont know JR decided begin designing building helicopters such well-known respected company can add enjoyment hobby fine products Since have just flaished building Ergo Ill give impressions kit issue next issue Ill cover performs air new Webra 33 engine Ergo available either 30 46 version 30 size accepts engines 32 36 range will appeal novice intermediate flier wants learn fly move up basic aerobatics Once basic maneuvers have mastered Ergo can convened 46 version unlimited aerobatics 3-D flying first time year Nats will feature Freestyle 3-D category Im sure will see type flying becoming popular over country first thing look new helicopter kit instruction manualhow well written accurately easily assemble helicopter am pleased report Ergo instructions some best have seen first page points modeler AMA goes Ergos main features includes illustrations items will required complete kit building supplies field equipment included kit basic hardware identification make sure correct pans used during construction Parts identification has further enhanced having parts separated large numbered bags correspond building sequence small hardware step separated smaller bags instructions suggest placing smaller parts something like coffee can keep getting lost prefer use tin used baking dozen muffins keeps smaller parts well separated especially several bags parts can easily identified remainder instruction manual has diagrams page step-by-step building instructions followed recommended helicopter radio adjustments get off ground correct setup Jaitial setup made easier because control linkages preassembled factory other linkages shown full-scale building instructions Although stated instructions ball links should snapped onto balls JR Propo insignia facing upotherwise links almost impossible snap onto balls Although Ergo doesnt offer helicopter-design breakthroughs does combine some best features current helicopter design JRs own improvements make Ergo easy assemble maintain Some design features like include Modular main frame construction using flat side frames improves models overall strength ease maintenance dressed up Ergo using T&T Engineerings Fiaish Caps 3mm bolts Available purple gold make helicopter distinctive October1996 103 JR Ergo strong straight modular construction top servos operate belicranks basic flight functions rear-facing Webra 33 mounts easily uses new JR Propo muffler fuel tank padded reduce fuel foaming Rear gyro mount leaves room up front other radio gear metal standoff front tailboom bracket mounts canopy combination metallcomposite head smooth precise lacks thrust bearings linkages preassembled one-way hex starting shaft very short eliminates sources high-frequency vibration other helicopters belt-driven tail rotor easy adjust maintain eliminates need expensive tube-drive system also reduces repair costs after mishap self-aligning all-metal clutch reduces vibration clutch lining factory installed ease construction rear-facing engine provides easy access glow plug forward-mounted fuel tank rests cushion molded foam reduce fuel foaming canopy made plastic appears almost indestructible easily snaps onto helicopter four places solid fit flexible landing gear provides excellent ground clearance holds tailboom level tail rotor well away ground good design feature rough-field flying However some points future versions Ergo may able improve kit does supply hex starter extension cant start engine head lacks thrust bearings mixing levers use bushings instead bearings tailboom carrier mounts tailboom main frame horizontal fin clamp massive plastic pieces Although Im sure very strong add weight helicopter main-blade axle transmits flight loads two rubber dampeners Having center bushing axle would transfer forces head thereby relieving stress danpeners Although major points show always room improvement Im very impressed design quality Ergo expect will excellent helicopter novice intermediate flier 30-size engine Ill have flight report next issue Readers Letter Most letters get someone having problem helicopter would like some advice once-in-a-while get letter offering help someone has particular problem has found solution received such letter recently Dan Finucane Arcadia Wisconsin problem X-Cell 60 belonged friend Dan took time effort hand-write three-page letter describing both problem solution can share experience two problems helicopter 1 blades continually going out track 2 tail vibration solve tracking problem head rebuilt balanced bearings checked lubricated nothing out ordinary found HEAVYWEIGHTS Getting Nervous Lightweight Realig Tough have testing new 6 treaded lightweight wheels new 45# P47 Thunderbolt have reacted well landing helping absorb stress has no tendency peel ground loops have greatly enhanced retract operation new wheels Godsend have Winner DBernier Mebane NC Made USA Aluminum Wheel Covers Dress up aircraft DU-BROs new aluminum Wheel Covers semidomed wheel covers allow clearance over wheel collars mount securely just minutes Designed fit 4-6 Treaded Lightweight TV Series Wheels wheel covers sure add touch class aircraft DU-BRO Name Can Count 480 Bonner Rd PO Box 815 Wauconda IL 60084 104 Model Aviation -driven tail rotor smooth easy maintain molded fins rotor blades bolt seem very durable Available 4 6 SizesWheel Covers BaIsaNOVA Just like Brazilian dance Bossa Nova loosely named Morris Hobbies BaIsaNOVA fun lively model airplane Tom Stryker designed BaIsaNOVA mainstream modeler wants easy build fly 40-size model insists good looks unlimited aerobatic capabilities thick fully-symmetrical wing keeps model sub-sonic speeds allowing crisp rolls loops snaps knife-edges exciting combinations thereof large yet stylish side area makes BaIsaNOVA perfect model show off crowd-pleasing knife-edge loops Stalls very gentle predictable landings slow stable engine really like BaIsaNOVA powerful MVVS 40 Couple optional MVVS tuned silencer becomes partially hidden bottom fuse lage have excellent performer ample cowl area provides room soft-mounting engine extra noise reduction desired simple 4 channel radio 5 servos 4 standard servos mini throttle servo required turn desires eye-pleasing maneuvers kit features Balsa Lite-ply construction crisp die-cut parts photo-illus trated construction manual CAD-drawn full-size plans make building easy enjoyable kit contains plastic wheel pants extensive hardware package includes landing gear control horns pushrods hinges other necessities box label includes shopping list additional items needed complete BalsaNOVA introductory price BaIsaNOVA $8995 Order MVVS 40 standard muffler low combo price $21995 Replace stock muffler MVVS tuned silencer combo price $23995 An instructional flying video also available See local hobby dealer order direct Morris Hobbies pleasing lines pleasing price tag should make BaIsaNOVA big hit both hobby shop flying field Introductory Price $8995 Sh pp ng Hand ng $5 95 KY d addtt tnTh Dealer Iiiqniries Invited Safe Easy RC Flying has favorite beginning pitots Instructors six step tested program completely presented easy understand guide Chapters include Aerodynamics Selecting trainer plane c flight Performing take offs Landing patterns Safely landing plane Leaming about Safety Cost $995 Specifications Wing Span52-38 Wing Area675 Sq Ins Length52 Weight5 55 lbs Engine40 50 Radio4 Ch w/5 Servos Building Flying RC Sajlplanes Electric Gliders explores intricacies different type RIC flying Chapters include Landing methods Thermal flying Slope soaring Operating electric motors power systems Choosing batteries charging Building tips techniques Cost $1L95 See yout local dealet call toll fre 18008266054 502-451-0901 Fax 502-451-8793 blades closely inspected rebalanced Again no problem found out-of-track condition still present Almost last resort Dan decided check static tracking blades found off inserted Miniature Aircraft Static Tracking Inserts part #0563 adjust static tracking Sure enough solved out-oftrack condition Although Im glad solved problem Dan notice recently rebuilt head static tracking X Cell largely controlled fit blade axle #0315 rubber 0-rings #0323 having similar problem 0-rings may worn old could cause problem like lubricate 0-rings during installation have using petroleum jelly years great success An automotive-transmission mechanic once told used petroleum jelly initial lubrication installing rubber plastic parts transmissions because lubricated distorting parts tried suggestion liked Maybe will too Dan could find solution tailvibration problem called Don Chapman some advice Don thought front transmission might have out alignment putting strain other parts tail-rotor system check models alignment Dan used Front Transmission Alignment Tool part #0507 sure enough out alignment Since two relatively inexpensive tools solved helicopter problems Dan certainly recommends other fliers Dan also recommends fliers have radios checked out once year Dan does winter months hes flying feels has probably saved mishap two During last checkup servos leads lengthened could use X-Cells elevator function using extension Eliminating extra connectors provides just little safety insurance Dan ended letter nice thought could live everyone would keep helping other would wonderful hobby Sport Competition Aerobatics comprehensive manual takes pilot exciting world RC aerobatics intricacies aerobatic flight presented easy understand steps have proven time again under actual training conditions Chapters include Choosing acrobatic airplanes Radio selection sting precisely trimming airplanes ral aerobatic maneuvers detailed instructions Contest preparation actual competition rips order now pocket guide containing reproduction of aerobatic maneuvers will includedfree purchase Actual price $299 Cost $1395 Including yourfree pocket guide Call Nighthawk Publishing 1-800-390-HAWK Shipping & Handling charge $200 added book purchased 106 Model Aviation