Originally Posted by
bikeman715
if you go with the Hyperglide freehub then you need a 6 speed cassette, they don't make a 5 speed for this. they go from 6 - 10 gears
I don't think a 6 speed Hyperglide cassette ever existed but I could be wrong. 5 and 6 speed Uniglide Freehub bodies and cassettes are very difficult to find these days, but 7 speed is alive and well. There are plenty of 7S hubs on ebay (some NOS, and pretty cheap) that you could take a body from and transplant onto your hub. As long as you don't have a REALLY old Uniglide hub:
http://sheldonbrown.com/k7.html#up7 (scroll to bottom)
Originally Posted by
Jeff Wills
If it were my bike, I'd be rebuilding the rear hub and really cleaning out the freehub body. Shimano hubs of that vintage were cheap, but almost indestructible.
+1
Take the body off, pull any seals and really flush the thing out before buying a new one.