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7 speed to 8 speed(2 posts)

7 speed to 8 speedfietswiel
Jun 19, 2002 7:11 AM
I have 7 speed shimano 105 components on a 96 cannondale. Does anybody know whether I can use the downtube friction shifters and rear derailleur with an 8 speed cassette?
Thanks
sure...C-40
Jun 19, 2002 1:01 PM
As long as the shifters are used in the FRICTION mode (not indexed), you can use them and the derailleur with an 8 speed chain.

If the shifters are indexed, it won't work well. 7 speed spacing is 5.0mm while 8 speed is 4.8mm.