Originally Posted by
bjr_93tz
This is what greeted me 3 flights after winning my first comp with this engine. It clunked to a stop in the starting gates when I throttled up.
The crank ring sealing area was a bit dinged up, but not enough for YS to replace the crank case when they fixed it under warranty. Once this was fixed and the later problems sorted out in that first year it ran like a train..
Yeah, been there done that Brett. Best I can figure out with mine, is that it was cage failure. Most likely another consequence of the low oil % I was running.