Originally Posted by
caintuck
I have a Sanshin freewheel hub with 126 O.L.D, laced to an Araya RM 400 Pro rim, which seems like an odd combo. Anyway, I'm not sure yet, but I may want to go to 130 O.L.D, and I would use a 6-speed freewheel.
I've read much about such conversions and just want to confirm that this is what I would need to do:
1. Replace the 137-mm axle with a 141 (for best results).
2. Add a 4-mm spacer to the nondrive side.
3. Redish the wheel to center the rim.
Essentially, is that it? Am I missing anything?
That's it -- the only compelling reason to do this would be to reduce asymmetric dish for stronger wheels. You'd still have the potential issue of bent/broken freewheel axles.
I think if you're going to go to the effort, you might as well treat yourself and build up a new wheel with a 130mm-spaced 7-speed freehub. Same strong(er) wheel, obviates the bent axle problem, gives you another cog, and great-condition hubs can be found cheap because the rest of the world has moved on to even more speeds.