Chain stretch??
Discussion
So I've been having some problems with my running gear jumping under pressure.
I couldn't see exactly what eas happening but thought I'd get a new chain and jockey wheels.
The new chain won't work at all. It rides up on the teeth of the rear cassette. I figured that I had been given the wrong chain but apparently not, it's my old chain that's stretched. A lot!
So it would seem I need a new chainset and cassette.
I thought the wear on the old chain would wear the other components in unison so that things would still work but the bike shop says not. Eventually things will be amiss, like now.
Does all this sound right? Any suggestions that don't cost at least £100?
I couldn't see exactly what eas happening but thought I'd get a new chain and jockey wheels.
The new chain won't work at all. It rides up on the teeth of the rear cassette. I figured that I had been given the wrong chain but apparently not, it's my old chain that's stretched. A lot!
So it would seem I need a new chainset and cassette.
I thought the wear on the old chain would wear the other components in unison so that things would still work but the bike shop says not. Eventually things will be amiss, like now.
Does all this sound right? Any suggestions that don't cost at least £100?
Get a chain checker, I use one of these.
http://www.rohloff.de/en/products/caliber_2/index....
Lets you know when your chain needs replacing.
http://www.rohloff.de/en/products/caliber_2/index....
Lets you know when your chain needs replacing.
When fitting a new chain it's more than likely that you will need to fit a new cassette as well. These two components bed into one another when used and can't usually be replaced exclusively.
You may not need to replace the whole chainset, however. Unless you are really heavy, the chances are it will be just the middle chainring that will need replaced rather than the whole lot. A 32T chainring only costs about £20 on average and is a lot cheaper than replacing the whole chainset.
Replacing the jockey wheels was probably unnecessary unless they were completely rounded off. These have virtually no effect on whether the chain will slip under load or not.
You may not need to replace the whole chainset, however. Unless you are really heavy, the chances are it will be just the middle chainring that will need replaced rather than the whole lot. A 32T chainring only costs about £20 on average and is a lot cheaper than replacing the whole chainset.
Replacing the jockey wheels was probably unnecessary unless they were completely rounded off. These have virtually no effect on whether the chain will slip under load or not.
This link might be of interest to you guys: http://pardo.net/bike/pic/fail-004/000.html#shiman...
Seems like many of the available chain checkers are inaccurate. What he says seems to make sense.
Seems like many of the available chain checkers are inaccurate. What he says seems to make sense.
Don't worry about changing your front rings they will bee fine but as mentioned before always change your cassette and chain together as they wear together, standard thing to do and your jumping problems will vanish. If not then you have the wrong width chain or a really badly set up rear mech.
John
John
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