Shimano cassette

[e-rider]

I always keep my chain lubed and change them every 6 months or so. For this reason I've only ever worn out one cassette and that was after 9 years of use.

So, why has my 1 year old Shimano Deore HG61 cassette started skipping on one sprocket. I've just put a new chain on (chain number 3 for a 1 year old cassette). I'm very surprised that it has worn already. I usually use better quality cassettes than Deore - could it be the Deore cassettes are just crap and wear out easily? Or is the new chain possibly dodgy?

 

[Manonabike]

The sprocket seems that is gone..... the symptoms you describe are the one you notice when you put a new chain and the cassette is worn out.

It's is possible the old chain wore quicker than you were expecting hence it damaged the cassette.

A tool to measure chain wear would be a good thing to get....

 

[e-rider]

yes indeed, I always use a park tools chain wear indicator - none of the chains were ever beyond 0.75% . I think the cassette has worn but it's amazing how much and how quickly! Perhaps my use of YBN chains, instead of KMC could be the problem.

Anyway, I've just fitted a Deore XT M770 cassette and it works perfectly so the deore is now in the bin.