Originally Posted by
ehcoplex
How large to you want to go with the biggest rear cog? IIRC a Cyclone GT (long-cage) can handle quite a bit of chain. And should be able to handle 7sp, regardless. Check Velobase or Sheldon Brown for the correct BB spindle length for the Sugino crankset.
I've never used a half-step plus granny setup and I want to, so I intend to keep the 28-tooth granny gear that is currently on the crankset. And I think that implies very linear (?) differences in size for the sprockets on the freewheel...?