Chain not sitting on chainring properly

birdy247
birdy247 Posts: 454
edited April 2011 in Workshop
I have recently purchased a stronglight 2000 crankset.

The issue I am having is the chain does not fit snug on the teeth. It appears the width of the teeth are different to the width of the chain links, so the chain sits on the teeth rather than in them.

The chain was previously used on a cheaper stronglight crankset with no issues.

Anyone have any ideas?

Regards
www.turbotraining.co.uk

Comments

  • ColinJ
    ColinJ Posts: 2,218
    Perhaps the chain has worn, causing it to stretch? If it is very worn it needs replacing. You might then find that the new chain slips on the old sprockets (cogs at the back) if they are worn too, in which case you'd also need to replace them.
  • birdy247
    birdy247 Posts: 454
    The chain is old, about 2 years. Only thing I don't understand is how would it fit on the old crankset but not the new one? Could the teeth have worn on the old one?
    www.turbotraining.co.uk
  • emx
    emx Posts: 164
    birdy247 wrote:
    The chain is old, about 2 years. Only thing I don't understand is how would it fit on the old crankset but not the new one? Could the teeth have worn on the old one?

    bingo.
  • sungod
    sungod Posts: 17,496
    yep, worn

    fyi you should check for chain wear regularly, and replace the chain before it gets too worn, otherwise your cassette and chainrings will suffer accelerated wear and no longer mesh correctly with a new chain

    you can buy a gauge or use a ruler, tells you how here...

    http://sheldonbrown.com/chains.html#wear ...scroll down a bit to the measuring section
    my bike - faster than god's and twice as shiny

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