Frozen freewheel is not the same as frozen freehub 8O
I'm assuming frozen freewheel is what the OP means, I solved this by ditching Shi*mano for WI. It may seem like an expensive solution, but I like my s/s to be simple and bullet proof :wink:
If you mean freehub then my Hope has proved to be totally reliable. All Shi*mano frrehubs allow ingrees of water on the drive side, then on into the freehub mechanism. I guess in the end this will freeze and cause your symptoms.
In fact I'll take that back, they are the same:
DITCH SHI*MANO!