Originally Posted by
blakcloud
My guess and it is only a guess is the pawls are mucked up in the freewheel. Maybe removing the freewheel body flushing it and re-lubing it might help. Worst case scenario is rebuilding your rear wheel.
It might be dirt in the freewheel, another suggested this. It is a single speed setup and so it's fairly certain that it's the freewheel. It pops before engaging I mean. It can happen after backpedaling or coasting but may have happened a few times even when pedaling.
Can the freewheel or freewheel pawls wear down?.
if it's dirty would that also cause damage?.
I think it also tightens up a little before engaging as well, so a piece of sand or something might get in the way of the pawls and slip out.
also isn't cleaning the hub and putting fresh lube in the same as rebuilding the wheel?.