6700 Cassette-How many miles before you change?
Moderator: robbosmans
- shoemakerpom2010
- Posts: 296
- Joined: Mon Apr 11, 2011 6:28 pm
- Location: Palm Coast, Fl.
Replacing the chain and large ring from my regular Rotor to a QXL Rotor and not sure if I should change my 6700 cassette too. Existing cassette has about 6,000 miles on it......
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It depends on how worn your chain is. A worn chain will wear out the cassette. Change the chain first. If it skips, then change the cassette also. I tend to change my chain way before it is near its wear limits (every 1200 miles +/-) so as to preserve my cassette. I know this is way more conservative than most people do. I use Campy on my road bike but this can be generally applied to Shinano/SRAM as well (which are on my cyclocross bikes).
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- shoemakerpom2010
- Posts: 296
- Joined: Mon Apr 11, 2011 6:28 pm
- Location: Palm Coast, Fl.
Thanks that's what I thought and I have done but wanted on an expert on here to confirm . This will be the 3rd chain as I ran my first chain longer then expected, KMC X10 SL.
Miles is not a good way to judge. A TT guy who puts out major efforts on a few cogs will get fewer miles than a sub-12mph rider who shifts often.
My wife will probably never wear out a cassette, regardless of miles ridden!
If you've changed the chainrings and chain, and the cassette teeth aren't clearly visibly battered, let the shifting be your guide. A worn cassette on a new chain will not induce premature chain wear, the way a worn chain will impact your cogs.
https://www.youtube.com/watch?v=a-7SWfQeqXI
EDITED TO ADD: You say you have 6,000 miles on it...... replace it. With all the new bits you're adding, treat yourself to the beauty and silence of a new system.
My wife will probably never wear out a cassette, regardless of miles ridden!
If you've changed the chainrings and chain, and the cassette teeth aren't clearly visibly battered, let the shifting be your guide. A worn cassette on a new chain will not induce premature chain wear, the way a worn chain will impact your cogs.
https://www.youtube.com/watch?v=a-7SWfQeqXI
EDITED TO ADD: You say you have 6,000 miles on it...... replace it. With all the new bits you're adding, treat yourself to the beauty and silence of a new system.
Goodness graciousness. I generally get 4-5 chains out of a cassette and don't get any sort of "oh, wow" sensation when I switch out cassettes. New chain? For sure--definite improvement.
Cassettes are pretty tough! Keep things clean/lubed/aligned and they last a LONG TIME. (Excepting the uberlight ones that you look at cross-eyed and they die).
Cassettes are pretty tough! Keep things clean/lubed/aligned and they last a LONG TIME. (Excepting the uberlight ones that you look at cross-eyed and they die).
4 chains or 10k miles sounds about right. Shimano cassettes are made through a cold-forged process, they are tough and can perform well up to 20k miles.
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Obviously this varies hugely by rider, conditions, etc. My cassettes never last more than 5-6k miles. And honestly, it doesn't matter if I change chains every 1500 miles or not. I have plenty of data doing both; I maybe get an extra 1k miles from a cassette with regular chain changes, but I will have spent the cost of a new cassette for those few additional miles.
In contrast, I have a friend that can put 12k miles on a single cassette and chain. He tolerates a lot more skipping and sloppy drivetrain performance than I would, though. Second time the chain skips, the cassette is done for me.
YMMV, literally.
In contrast, I have a friend that can put 12k miles on a single cassette and chain. He tolerates a lot more skipping and sloppy drivetrain performance than I would, though. Second time the chain skips, the cassette is done for me.
YMMV, literally.
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- Posts: 268
- Joined: Thu Apr 11, 2013 2:15 am
4 well kept chains worth, usually, unless issues arise.
wetpaint wrote:I usually retire cassettes in the 10-12k mile range and they're not skipping at that point, just for peace of mind. I'm watchful of chains though and replace when needed.
Agree. 10-15-20,000 miles on the cassettes usually. Chains every 5,000 or so miles. I only use steel cassettes. Cheapest name brand I can find. Chains sometimes get a kink in them and won't run correctly so must be replaced sooner.
Wish I could get 5000 miles out of chain. I don't get half that.
wheelsONfire wrote: When we ride disc brakes the whole deal of braking is just like a leaving a fart. It happens and then it's over. Nothing planned and nothing to get nervous for.
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- Posts: 268
- Joined: Thu Apr 11, 2013 2:15 am
3 chains worth, if I'm not being silly.