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chain slip


Frags's picture

By Frags - Posted on 01 August 2010

NB: Originally posted elsewhere on the Global Riders Network and appears via syndication.

Hi everyone,
I have just changed the chain on my bike as it was time according to my wear indicator tool, problem is I have only had the bike since May so 3 months I'v put the chain on no prob's there measured up to the old chain so sizing is correct, hit it with some lube then off I go for a ride this is where the problem is. Chain worked great in the big cogs ( top half ) but when I wanted to put the foot down and get some power ( in the small cogs ) the chain would slip under the pressure, in fact just under normal/ easy riding it would slip. Any recommendations for a fix ? eg shorten the chain further ? or could the cassette possibly be worn out already? what should I do?

Oh yeah Iv probably been riding about 10 hrs per week in all conditions wet, mud, sandy, dry if that makes any difference.

Thanks
Matt

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PIVOT MACH 5's picture

Gears may need adjusting. Check the teeth on your cassette and compare the ones most used ( from middle towards the inside )
to the least used ( the smaller outside teeth) and if they are different then that means your cassette has worn too far.
Good new is you can put the old chain back on and ride it into the ground.

You can try the new chain with a new cassette and if they mesh then problem solved.

......'s picture

times 2 on the rear cassette wear. 3 months is enough to grind down a cassette

How did you measure the new chain?? Did you count the links or measure it with a tape measure. If you counted the links your good, if not, you need to account for chain stretch.

jeremya's picture

10 hours a week for about 12 weeks is about 1200klm I think . That is more than enough to require the middle and bottom rings to not work with a new chain, and need renewing .Did you say it was the cassette that was slipping as that is more surprising. I can only get 500klm out of a chain if i want to avoid replacing the middle ring at the same time .
My solution is to run 2 chains and swap them every fortnight . That way you get to replace everything (chain,front rings and cluster)once a year, with no hassles from letting the chain go too long and forcing you to replace the cogs as well .

Frags's picture

yeah measured by the links. no way i would do any other way due to amount of stretch

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