carleton

I recently switched from a Shimano 105 12-27 cassette to a SRAM 1070 11-23. After removing chain links and making minor adjustments, I go for a test ride. Often when I upshift to a smaller cog on the rear there is a violent "CLUNK" as it drops on to the new ring. This causes my foot to jerk forward when this happens under load. But this clunk also happens when it's on the bike stand. Shifting to larger rings seems to be fine.

Is this just a difference in how Shimano and SRAM handle things or do I need some finer adjustment? This never happened with the previous cassette.

Thanks,

C