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Put a new chain on existing cassette (SRAM GX 12 speed). O knew if was risky as chain was quite worn.
It works okay-ish but does seem to hop between gears - sometimes need to shift up and down again for it to settle. Continues however much I adjust cable tension, B tension is per spec. It doesn't slip - just hops about. Cassette doesn't **look** particularly worn
before I lob a new chain and cassette on, wanted to check if there's anything else I should look at? thanks!
Sounds like it could be time for a new gear cable to me. I’d be changing the inner and outer before anything else
If it's hopping between gears i'd be checking the cables and rear mech alignment more, if it's slipping in certain gears then those cogs on the cassette might be worn down too much.
I sadly find that mechs on my bike tend to get a little sloppy with movement, as well as some alignment now and again as it does seem to always get hit by rocks or whatever out on the trail, i guess it's a negative from the single chainring set up, and it can cause chain skip between two cogs now and again, and a slight bend back into alignment.
Worth checking the wear on your cassette with vernier callipers if you have them. It’s easier to do on shimano than sram but simple enough. The gap between the vertical parts of the gap should be less than 9.7mm ideally. If it’s more than this a new chain will most likely jump under power. Change your chain at 0.5 wear to avoid the need to change chainrings or cassettes.
If its an Eagle chain, is the quick link up the right way? My mate had the same and his was upside down, switched it the right way and stopped.