Originally Posted by
spelger
your cassette should last way longer than that. unless of course you are using your chain for too many miles.
I hope you're right. Cassettes are expensive! But I've worn them out that quickly before. One problem is that I tend to use the smaller cogs on the cassette a lot, and am not using the big cogs. I was using an 11-34 cassette, and the cogs went 11-13-15-17 and on up. I've switched to an 11-28 cassette where the cogs go 11-12-13-14-15-16-17 and on up. So, I'm spreading my riding time over more cogs. In the past, every time my cassette started skipping, it was always on the 11 tooth cog. I'm hoping that by sharing that load between the 11 and 12, I can get more life from the cassette.
But you may be right that I'm keeping the chain too long. I use a chain gauge and its up toward .75. Maybe I should change the chain sooner.