Originally Posted by Portis
So I need Shimano shifters to work with shimano derailleur? I have an 8 speed derailleur with worn out jocky pulleys. Can i swap pulleys from the suntour to the shimano?
They may fit but the Shimano indexing top pulleys have a small amount of float (side-to-side play) to allow the pulley to line up exactly under the proper cog. I don't think the Sun Tour pulleys will work as well.
Next problem is the 7 speed hub. I assume i can't use it with 8 speed cassette?
Can i just use the 8 speed shifters, on the seven speed setup?
An 8-speed cassette will not fit on a 7-speed freehub. You probably can use the 8-speed shifters on a 7-speed cassette as the spacings are fairly close. It may not be perfect but it should be adequate. Use the derailleur limit screw to lock out the 7th (lowest gear) click of the 8-speed rear shifter.