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Yeah, that sounds more and more like it's spent. they're not meant to last forever...
It seems like something in the control board rather than mechanical. Can not keep it from spinning with the trim or the stick. If the stick is moved just slightly to the left or right to stop the spin, it goes very fast in the direction of stick movement or trim control. Time for another one. It had been needing trim control through out the last few times I flew it, but was very stable, so guess something was going bad electrically then.
Thanks for the suggestions.
Is it only when you hit the stick, or all of the time?
Once again, two different problems... If all the time, then it's a motor blown. If just when you hit the stick, it could be a gear, a motor's slow, or something with the motherboard or remote.
It should turn faster one direction than the other, though, since the balance bar adds mass to the one rotor set, making those have more force to turn it and making the other set not have nearly as much, making them not rotate the bird as fast.
Always good to have spares, I bought 4 After my first, so loads to play with.
Good luck and enjoy 
Keep us posted.
CPD said:
Is it spinning like a top, and can't be corrected at all, no matter how much trim, or slightly turning to one side, and you just can't quite get the tuning right on the trim?
Those are two completely different problems, with two completely different solutions. If you can't get it trimmed, bring it to a slight hover on a smooth surface, like a kitchen counter, and barely tap on the trim control with a pencil or something-- It's harder than you'd think it'd be to get right, and it changes every freaking time you make a slight modification or repair.
Right. It is spinning like a top. If I tap the right or left control it spins like a top. I saw the video on the gears that may be the problem. At this point, I will probably just order another chopper only and a set of gears and keep this one for spares unless there is a fix.
Thanks.
Is it spinning like a top, and can't be corrected at all, no matter how much trim, or slightly turning to one side, and you just can't quite get the tuning right on the trim?
Those are two completely different problems, with two completely different solutions. If you can't get it trimmed, bring it to a slight hover on a smooth surface, like a kitchen counter, and barely tap on the trim control with a pencil or something-- It's harder than you'd think it'd be to get right, and it changes every freaking time you make a slight modification or repair.
Hi,
I have about 4-5 hrs. on my S107 and it was flying very stable up till now. Not sure what has happened, but when taking off, it immediately goes into a spin and is not controllable. I have tried to use the yaw trim, but it over-controls either ccw or cw. I suppose it may be time to get another one and use this one for spare parts unless someone has a fix.
TIA
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