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Cassette change and shifting(5 posts)

Cassette change and shiftingswcjack
Sep 7, 2002 2:24 PM
I just changed from a 12-25 to 12-27 cassette and the rear shifting is quite off. I have never tried to adjust the rear deraulier, so could somebody give me some pointers on making the adjustment.
Thanks
Swcjack
Go to http://www.parktool.com/repair_help/FAQindex.shtmlSGrouts
Sep 7, 2002 2:37 PM
So how was the shifting before?Spoke Wrench
Sep 7, 2002 4:06 PM
Changing cassettes shouldn't normally change the shifting. The minimal change in your biggest cog size might have some affect, but if your shifting is significantly deteriorated across the cassette, you have a different problem than derailleur adjustment.
Chain length(too short?)also, with two more teeth (nm)Spunout
Sep 8, 2002 3:07 AM
re: Cassette change and shiftingLC
Sep 8, 2002 12:42 PM
If the chain is worn then it will not work on the new cassette properly. Change the chain at the same time and all will be well again.