Originally Posted by
Ronno6
The spacing is the same whether it is 7 or 8 speed.
No, it's not, unless it's Campy, who use 5.0mm for both. Shimano uses 5.0mm for 7s and 4.8mm for 8s.
Close enough to get it to work, but it won't be perfect. Alternate 'hubbub' cable clamping method should improve it, I think.
Originally Posted by
b_dubz
I'll go ahead and try to set it up locking out the smallest cog.
It'll shift all eight cogs if you do it the other way; you don't need a click for the biggest cog... you can just pull the lever past the last click.
Anyway, locking out the small cog would likely result in an overshift to the second-smallest cog, because shifters generally let out more cable for the last click to help the RD make it onto the smallest cog; the limit screw is what holds the RD in place for that one.