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S107 trim - can't stop the rotation...
Tags: Syma X9
Syma Freak
January 11, 2013 - 2:04 pm
Member Since: November 26, 2010
Forum Posts: 1437
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check to see if main shaft bent-try gently bending opposite way to spin-but be gentle

"Fly like a butterfly sting like a Syma" http://syma107.com

January 9, 2013 - 10:27 pm

My S107 continues to turn on its axis even when the trim knob is turned all the way.

This isn't the "toilet bowl effect" - I managed to create that when I swapped the rotor blades around to see if it was perhaps a balance issue. I cured TBE simply by tightening up the blade screws.

This is a constant, slow (1-2 RPM max) spin around the rotor axis while in a stable hover ~6 feet off the ground. It doesn't move, it just slowly turns. If I turn the trim knob the other way, the spin increases (if I go all the way the other way, it's probably around a 10-15 RPM spin).

Is there anything I can do to fix this? I've tried playing with small bits of weight, but weight on one side or the other makes the S107 slide that direction; it does nothing about the spinning.


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