Originally Posted by
LarDasse74
This could read "make sure limit screws are properly adjusted." If your limit screws are already properly adjusted then they will not have to be changed to use an 8 speed shifter.
THe spacing between 8 speed cogs is slightly different than between 7 speed cogs, but many have reported that it works well.. I have had the opposite experience using 7 speed bar-top thumb shifters with the extra 'phantom click' - the shifts were never quite perfect.
You might also be able to get some 7 speed bar end shifters off EPay or something... I have a set I am planning to sell sometime soon.
You can also get friction shifters and they will work perfectly.
Same with me- I couldn't get my 7-speed bar-end shifters to work on an 8-speed cassette. Whether 8-speed shifters would work on 7-speed... I dunno. I might have a working 7-speed set in my pile o' parts- I'll check after work tomorrow.
Friction works with everything.