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Helicopter hovering in circular motion when in flight
Tags: Syma X9
New Member
December 27, 2011 - 4:14 am
Member Since: December 27, 2011
Forum Posts: 2
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Can anyone help. When the helicopter takes flight I can't get it to stay still and it's hovering in a circle. It was fine at the start but has now started to do this?

Greenville TX
December 27, 2011 - 4:25 am
Member Since: December 16, 2011
Forum Posts: 43
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This is commonly called TBE (toilet bowl effect).


 Usually caused by either an imbalance of the rotors or flybar, rotor screw too tight, or possibly a broken top rotor tab. It could also be a bent rotor shaft, check everything out and see if you notice anything out of place or binding. 

New Member
December 27, 2011 - 6:34 am
Member Since: December 27, 2011
Forum Posts: 2
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Thanks for the info will check it all out and let you know how I get on.

December 27, 2011 - 7:39 am
Member Since: November 18, 2011
Forum Posts: 1093
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There's a big page here somewhere on how to fix it...


I have a slight problem with it myself- my heli's main shafts are bent in 3-5 spots!


The "big" one's if you hit the ceiling a lot and crash it into stuff a lot, it'll bend the shaft...


That's a $3.50 fix on each one...

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