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Pre-Indexed Derailers(1 post)

Pre-Indexed Derailerslaffeaux
Mar 20, 2003 8:40 PM
Lots of questions these days. Here's an easy one.

I've always heard that you can't use a non-indexed derailer with indexed shifters. Why is that exactly? Do they pull different amounts of cable? Seems to me that if they pulled the same amount of cable, what do the shifters care?