Main Rotor System
Main Rotor System
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Syma S107/S107G R/C Helicopter *Colors Vary List Price: Sale Price: $15.59 You save: $114.36 (88%)  |
DescriptionThis Brand New 3 Channel Gyro mini Metal rc helicopter is 1 of the world's newest, smallest and lightest RC Helicopter you can get! At approx. 7.5" long, it easily fits in the palm of your hand and is fully functional, equipped with latest Gyroscope technology, which makes this helicopter an instant hot seller in the RC World... |
 Main Rotor head Flybarless system Upgrade Set FOR Align T rex 450 SE V2 SPORT US $25.00 
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 Main Rotor Flybarless system Upgrade Set F TREX 450 PRO S US $26.99
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 Main Rotor Flybarless system Upgrade Set F TREX 450 PRO US $28.85
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 Main Rotor Set Flybarless 3G System Head assembly for Trex Trex 550 600 550E US $67.88
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 HN7108QA 700 Flybarless System Main Rotor Set Black 700E 700N US $139.99
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 700 Flybarless System Main Rotor Set Silver HN7108QF US $142.00
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 700 Flybarless System Main Rotor Set Black HN7108QA New US $142.00
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 Main Rotor Flybarless system Upgrade Set F 450 V2 SPORT S US $18.46
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 Align 500 Flybarless Main Rotor Head w o 3G system US $222.00
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 Align 700 Flybarless System Main Rotor Black HN7108QA US $123.67
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 Align 700 Flybarless System Main Rotor Set BLACK Trex US $135.00
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 Align 700 Flybarless System Main Rotor Set Silver TREX US $135.00
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what is 'LEAD-LAG" in helicopter?
related to main rotor system
A lead lag hinge simply is a hinge which allows the blade to pivot slightly forward and backward. Coriolis force tends to make a rotor blade want to speed up and slow down it's rotation around the mast. If the blade is rigidly attached to the mast but isn't strong enough, it could develop stresses large enough to break the blade