Originally Posted by
elcyc
You don't see the issue on the workstand because you can't apply enough force to make the mismatch apparent. The fact remains, the problem as described is absolutely classic for running a new chain on a worn sprocket.
If the "mismatch" issue was/is common, as many of the commenters in this thread are claiming, then wouldn't chain and cassette would be sold in sets?
A competent bike shop will always recommend a freewheel/cassette replacement whenever a new chain is indicated.
And/or chain or cassette instruction manuals note that phenomena contextually? And/or bike books and YouTube videos and Internet articles/blogs note the "mismatch" issue?
If you know of any specific references, outside of BF, please provide a hyperlink.
Ok:
https://www.sheldonbrown.com/chain-wear.html
Another thing .... many of you are pointing to the cassette as the culprit. I concur it may be the reason (tho' from my inspection, usage notes, and photos, I don't think it's that worn)
The problem was described as happening on the smallest sprockets. Those have the fewest teeth, and thus wear the fastest and exhibit the problem the soonest. If the problem were occurring on all the sprockets, that would call for a different diagnosis.
In prev. years, I've used SRAM and SHIMANO, w/o concurrent cassette replacement (in fact, that's the norm for me and most folks) ... and, surprise .... NO SKIPPING ISSUES!!!
That suggests that the drivetrain in those cases was not as worn as the drivetrain you are currently having problems with.