09-01-2011, 03:28 PM
If it looks like the chain has not fallen off either of the gear clusters and is running smoothly, I think it means that the read gear cluster is broken (specifically there is a ratchet inside that is broken.) It would be pretty weird for this to break from a crash, so maybe something else is going on, but I suppose it's possible.
When it's upside down, can you shift the gears ok and all else seems fine?
When it's upside down, can you shift the gears ok and all else seems fine?