Originally Posted by
dddd
If the new chain jumps under high pedaling force using the new chain, then the affected rear sprocket's teeth can be corrected as needed by grinding off the protruding corners atop the driven side of each tooth. It only takes a 1mm bevel there to correct for excessive wear near the base of the teeth, easily done with a 3/8" dia stone wheel chucked in a Dremel tool.
Well, seems I have traded one problem for another! The new freewheel shifts great but the 14t and 15t cogs skip under load.
Before I touch it with a power tool, I want to be clear what I should be doing. If I understand you correctly, I should put a 1mm bevel on the tooth similar to what I drew in red on the picture?
On a side note, why would this work on a freewheel but not on a modern cassette or would it? Also, please don't mind the dirty, disgusting chain. I tried with a new chain first and then with an old one just to make sure it was the 14t and 15t cogs.
EDIT: I just found a more detailed explanation here:
http://www.bikeforums.net/showthread...wheel-question
But if you have anything to add to your previous words of wisdom I'm all ears!