I was thining about putting an ultra-six freewheel on my ten speed. I just haven't found any in the gear ratios that I want. All of the ones that I have seen are practically TT corncob setups. (well, 12-21 is pretty narrow) Does anyone know of a source of wider-spaced ultra 6 freewheels?
I heard that an Ultra 6 freewheel will work with an 8-speed chain. what about the crank? That has teeth too. I know that if you use a 9-speed chain on a 10 speed (2x5) you will get crazy chain suck. Are the 8-speed chains wide enough to not cause chain suck with the chainrings? I was going to go touring this summer, and I want to get a new chain this summer anyway.