Main gear failure

[gaanel]

No crashes yet so not sure why this happened.
I had just powered up and had just lifted off to about a 1 foot hover (fortunately). I was just about to give some throttle when I heard a terrible grinding noise and then the engine overspeeded. The heli dropped down to a soft landing and I cut engine power. I looked at the heli and noticed that just about every tooth was removed from the main gear (the plastic gray gear).
Any ideas why this would happen?
Thanks
Gary

[scottc]

you may have not had the teeth meshed right when you put it together would be my first thought, had this happen to me many time with the rc cars.

[vanguard]

I had one do the same thing only it was about 30 feet in the air. I sent the damaged gear to Dave at Gohbee but he found nothing wrong with it. I had thought maybe they had a gear issue. You might drop him a note on the Gohbee forum. You can also see my post on the same problem. There is no adjustment on these gears so its not a matter of poor assembly.

[WJackson]

An issue with the 30 main gear was apparent year before last. you may have gotten one of the old ones. meshing should be tight to "wear in" but only to a point.

[gaanel]

I have flown about 4 gallons through this heli with no problems. Just wondering why it would let loose all of a sudden.
Thanks again,
Gary

[Gohbee]

not sure Gary, give me a call and we can troubleshoot.....


-David