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Campy Chorus 10 speed cassette lifespan?(5 posts)

Campy Chorus 10 speed cassette lifespan?ridewt
Jul 12, 2002 10:08 AM
I've got about 4,000 on my cassette and the 16/17 cogs make noise but not the rest of the cassette. I'm thinking of just getting those replacment cogs from Branford Bike. But, if 4,000 is about the typical useful life of a cassette, I'll just buy a whole new one. By the way, I've changed chains often and am now on chain #3. Any useful advice appreciated. Thanks.
Make noise?McAndrus
Jul 12, 2002 11:10 AM
I'm not sure what that means. In my experience, a worn cassette skips - particularly in a standing climb. And 3 chains in 4,000 miles seems like a lot. Are you measuring the chains for stretch before you replace them?

In any case, I'd say replace the 16 and 17. If the rest of the cassette is performing well, save the bucks and replace the cogs that need it.
Jul 12, 2002 1:30 PM
Worn cogs don't make noise, the chain skips on them.

If you really needed to change chains that often, you should improve your maintenance technique. I have no problem getting that much mileage from one campy 10 chain.

Cog life varies greatly, mainly due to maintenance technique and how dirty your riding conditions are. I would expect many times the mileage that yours has.
Jul 16, 2002 7:02 AM
Thanks for your reply. The reason for the replaced chains was chain #1 broke at the perma-link at about 2,000 miles. Chain #2 I decided to ditch after 2,000 since I didn't want another chain to break. Now I have a Wipperman, which I purchased, in part, to see if the noise would go away - it didn't.

I know what you mean about worn cogs usually means skipping but I've had no skipping. The 16 and 17 just snap/crackle/pop sort of like the sound some aluminum bikes make at the seat post or BB when they need to be cleaned and relubed. But, I know the noise isn't that because the bike is absolutely quiet except in the 16/17.

I think that perhaps the 16/17 were defective. I'm getting new cogs or new cassette.
re: Campy Chorus 10 speed cassette lifespan?tarwheel
Jul 16, 2002 5:00 AM
I put 5,100 miles on my C-10 chain until the Permalink broke one day (just after my bike shop checked it and said it had plenty of wear left). I installed a new Wipperman 10 chain but the left the cassette on because I didn't want to shell out $80 unless it was necessary. Two weeks later, I ordered a new cassette because it wasn't shifting as smoothly as I expected with the new chain. So, in my case, I got about 5,400 miles on my C-10 cassette. The bike shifts much better with the new chain and cassette, but I kept the old one as a backup. I plan to change the Wipperman chain at 3,000 miles and hopefully will be able to get 6,000 miles out of the new cassette -- or use one cassette for every two chains.