Last night I was flyimg my AXE CP for about 3 minutes in a nice steady hover. Suddenly the trottle jumped with no input for the stick to almost full power then back down and then up and repeat. I couldn't get it to the ground smoothly beauase of the lack of throttle control. Ended up bending the feathering spindal (for the 4th time...) and stripping the large gear on the main rotor assy.

Any one else have this happen and what could be the problem? Rx? Tx? Motor? Battery(1320mAH lipo)?
Also any one know of a better main rotor gear?

Thanks

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I kinda had a similar problem when after I replaced my spindle, my Axe wouldn't take off smoothly. It'd jump right off the ground like a rocket. The blades wouldn't pitch for lift until I reached a ridiculous RPM. I'd have to back off the throttle then it'd hit the floor. Kangaroo CP!! I put a dab on machine oil on the seesaw and center hub, made sure the flybar links were loose and my problem was solved. I have noticed though that with my Thunder 1320 LiPo's, sometimes I get a "spike" and the Heli will jump and dip in altitude but not to the point of being an "unrecoverable event." I was thinking I needed a balancer to correct the jumpy current issue so I'm gonna grab one tomorrow. Maybe that's a fix. We shall see.....


Peace,
EM

most likely the issue with this is that somehow something is making it so the pitch in the blades doesn't move freely. This could be a tight ball link, bearing racers put in backwards, too many shims, tight mixer arms, bad bearings in the blade grips, need lube in the blade grips and on the spindle, ect ect. That is where I would start looking.