Originally Posted by
roadgator
^^^
the freewheel body is thicker and has more threads than a fixed cog. because of the ratcheting mechanism, the teeth may not be directly over where the threads are engaged (if threading on to a fixed hub), which would create a twisting action that could (maybe maybe) tear the freehub off the threads.
not likely, but not ideal to do it either.
eh, i doubt it. most freewheels teeth are pretty much where a track cogs teeth would be in proportion to the flange, the teeth would most likely be engaged if the cog was screwed all the way on, hence my spacer theory.
In my experience i;ve threaded a freewheel onto a really bad POS hub and only got it about a quarter of the way on after all the spacers were set, (horrible 30 minute conversion job) and i beat the hell out of that wheel and the freewheel never budged.