Change cassette as well as chain....

General bike chat that does not fit elsewhere
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TheFD
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Joined: Wed Aug 03, 2011 15:08 pm

Change cassette as well as chain....

Postby TheFD » Mon Nov 05, 2012 12:11 pm

My chain is worn, and I know lots of folks tell you to replace the cassette at the same time as the chain, but others say you can change the chain at 0.75% worn and you could manage two or even three chains with a new cassette.

My question is....

How do I know if the cassette is worn? Are there indicators? Or is it if the chain slips?

And....

How many folks change the cassette at the same time as the chain everytime? And how many try to get two or more chains with the cassette?

Cheers
2013 - R872
2010 - Spesh Tarmac

ManOfKent
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Joined: Thu Sep 13, 2012 12:08 pm

Re: Change cassette as well as chain....

Postby ManOfKent » Mon Nov 05, 2012 13:44 pm

On only two occasions have I changed the cassette with the chain. One of those was on my old runaround hybrid where I'd let the chain stretch so much that the cassette and chainrings were completely knackered. The other was on my road bike earlier this year, when I wanted to change the ratios at the same time I thought the chain might be due for replacement. I still have the old cassette and would put it back on without any hesitation: it had done only about 4-5000 miles.

On all my other bikes I've just changed the chain every so often; cassettes seem to last more or less indefinitely for the amount of riding I do.
Last edited by ManOfKent on Mon Nov 05, 2012 14:02 pm, edited 1 time in total.

pinarellokid
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Joined: Tue Jul 03, 2012 16:06 pm

Re: Change cassette as well as chain....

Postby pinarellokid » Mon Nov 05, 2012 13:58 pm

id say it all depends on how worn the chain is
and how long it had been allowed to run on the cassette in a knackered state.
in my mind monitoring the chain and changing at the right time would be ideal
and i cant see a problem in that.
but i may be wrong
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g00se
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Re: Change cassette as well as chain....

Postby g00se » Mon Nov 05, 2012 14:51 pm

A worn cassette (and chain rings) will have thinner teeth and possibly shark-toothed. But the easiest way to tell is it a brand new chain skips every so often (as the cassette wears to match the old, worn chain).

Some think a good practice is to keep two or three chains on the go and swap them over regularly. It certainly makes things easier with cleaning if you like getting the chain off to maintain it: old chain off and in jar of degreaser; spare chain on; clean old chain at your leisure.

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wilo13
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Re: Change cassette as well as chain....

Postby wilo13 » Mon Nov 05, 2012 15:06 pm

Your supposed to change your chain about every 2000/2500 miles or so. Buy a chain wear indicator so you can check your chain regularly. Its important you keep on top of this as a badly worn out chain will ruin your whole drivetrain and cost you a lot of money to replace. Spending £30 on a chain every 3/4 months is much cheaper in the long run.

I change my cassette every year on my commuter (after about 7-8 thousand miles). You will know when a cassette is truely knackered as it will start to skip gears and the chain will slip when you get out of the saddle.

So to conclude you can get 3 or 4 chains out of one cassette, however if you change a cassette you must change the chain at the same time. I learnt this the hard way and couldn't understand why my new cassette was really loud and making my gear changes sloppy, it was because I was running a chain that had done 2,600miles!
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zx6man
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Re: Change cassette as well as chain....

Postby zx6man » Mon Nov 05, 2012 15:30 pm

I have 2 on the go for each MTB and Road bike. They are only 8 speed so less than a tenner each.
And I swap them around everymonth after a good clean up. And as Wilo mentioned take off, swap it for nice and clean chain, clean the chain when you have more time, easy :-)

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wilo13
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Re: Change cassette as well as chain....

Postby wilo13 » Mon Nov 05, 2012 15:44 pm

zx6man wrote:I have 2 on the go for each MTB and Road bike. They are only 8 speed so less than a tenner each.
And I swap them around everymonth after a good clean up. And as Wilo mentioned take off, swap it for nice and clean chain, clean the chain when you have more time, easy :-)


I forgot to mention I take my chain off every month like Zx6man and give the whole drivetrain a degrease and a relube to keep everything running nicely. Bikes are very demanding pets.
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