Hey guy's.

I've got a wobble.

The top part of my BCP head seems like its bent or out of round but it doesn't seem to be due to the shaft. It's only from just above the blade grips to the, and including, the top screw. It's the stock BCP head with the bell/hiller upgrade. BTW, I'm seeing this with and without the blades, which I've balanced, installed. Only from the top of the blade grips up...weird. If it matters for diagnosing, I'm using two dampning washers on each side of the "feathering rod" and I've spent quite a bit of time balancing the fly bar as well. Heck, I even found out you can balance the main gear/shaft.

Any ideas??

Thanks

two things come right to mind.....is your flybar bent? If that is straigh then it is possible your center hub is bent. Also be aware that IME the blade always seems to have a slight vibration (even without blades). Even with brand new parts they don't seem to be 100% straight. With my heli this goes away once you start getting to about 40% throttle though.

I wondered about that. Would I have to remove it to make sure? It doesn't look bad.

Your center spindle could be worn and that will make it fit loose.

Yeah, I had a very SLIGHTLY bent spindle, not even noticable until i rolled it along a mirror, then it had an every so slight wobble. My CP Pro still appears to have a wobbly head but around 25-30% throttle its smooth as silk, I just balanced the entire head assembly, blades and all, all in one piece using the flybar as a pivot. A little tape to the light side and voila, new heli.

I've got the same wobble problem with my CP Pro. It's brand new and the center spindle does not appear loose. I've replaced and recentered the flybar with no apparent affect. Like NEWBLADEPILOT, the wobble appears to start from above the main shaft. Just as a precaution though, I have tried two other new main shaft/gears in the heli (this after tech support from Horizon Hobby said they had had a problem with shipping "out-of flat" gears). Still no luck.

The wobble is there through the speed range and occurs with or without the main blades attached. The wobble is significant enough that the heli will vibrate across the floor irregardless of the transmitter control position.

I guess the next step is to rebuild the head - though I had hoped not to have to dig this far into a "RTF" unit. Kinda defeats the whole purpose. One of the main reasons I got an E-flight was an apparent attention to quality.

Any suggestions would be appreciated.