Can anyone suggest why every once in a while my chain drops off the big ring on to the little / beyond on to the BB cluster. Tends to happen in bumpier roads, but occasionally it will happen when I rear shift.
Everything seems fine in the stand
Worn tooth?
FD poorly adjusted?
Either set up too high or goes back too far in.
Re-check and fit a chain catched so it can't physically drop
@Hovis started
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Can anyone suggest why every once in a while my chain drops off the big ring on to the little / beyond on to the BB cluster. Tends to happen in bumpier roads, but occasionally it will happen when I rear shift.
Everything seems fine in the stand