Originally Posted by
79pmooney
Any chance you bought a 9-speed or fewer chain? If so, it might be a touch too wide to fit down on the cog. Also, how far did you ride your new chain on the old cassette? Running a new (un-stretched) chain on an old cassette will quite quickly stretch it out to fit the worn cogs on the cassette. A few hundred miles could make that chain quite "old".
Have you tried this while the bike is on a stand and you can see what's happening?
Ben
The chain is a SRAM 10xx.(1051 or 1071, not sure.) I opened it fresh. I rode the new chain on the old cassette maybe 2-3 rides, less than 50-75 miles.
I will try it in the stand, but typically when this happens the chain is under a little pressure. Usually it happens under the following conditions; in the middle ring up front, middle cog in rear, I shift to a larger (ie easier) gear. So, it happens as i start a hill and am moving to an easier gear.