New chain slips like crazy

junglist_matty

Fitted a brand new chain to my Canyon this morning, the old chain is a KMC X10, and it's been fine until the last month when it started slipping very occasionally on big power efforts. As the chains done over 3500 winter miles, I thought I'd get a new one so bought the exact same chain, just this one is the X10 gold version:

http://www.chainreactioncycles.com/Mode ... elID=25417

Fitted it and rode away, chain slipped like crazy, checked the gear alignment which is fine.... Last night, the old chain didn't slip at all, even under a lot of power, the old chain only ever slipped when I put in a big sudden acceleration burst, and even then, it was only occasional slips. This new chain is slipping on normal pedalling with very little power on the pedals.

Any ideas?

Here's what I checked:
- Gear alignment, gears clicked though each cog fine when bike was upside down and pedalled cranks with hands.
- Rear mech doesn't appear to be bent.
- Chain length, at first it was too long, thought it may be that, removed a couple of links but no difference.
Thanks,

nicklouse

Worn out cassette.

farrina

+1 to worn cassette.

More than you ever wanted to know here http://sheldonbrown.com/chains.html see "Chain and sprocket wear" part way down page.

Regards

Alan

Ben6899

+1000 to worn out cassette

junglist_matty

Cool... Thought that may be the case, I'll order myself a new cassette then, hopefully will arrive on Monday; I'm not riding it as is, real pain in the asre!

owenlars

junglist_matty wrote:

Cool... Thought that may be the case, I'll order myself a new cassette then, hopefully will arrive on Monday; I'm not riding it as is, real pain in the asre!

Go to LBS buy one off the shelf and ride this weekend.

Ben6899

If you order online, make sure you get the same cassette (i.e. sprocket sizes) especially the smallest sprocket as that will affect which lock ring you need... and some cassettes come without a lock ring.

junglist_matty

Ben6899 wrote:

If you order online, make sure you get the same cassette (i.e. sprocket sizes) especially the smallest sprocket as that will affect which lock ring you need... and some cassettes come without a lock ring.

Really? I've never bought a cassette without a lockring before, although this is my first aftermarket road cassette, bought loads of Shimano MTB cassettes over the years; none have ever come without the lock ring,

junglist_matty

owenlars wrote:

junglist_matty wrote:

Cool... Thought that may be the case, I'll order myself a new cassette then, hopefully will arrive on Monday; I'm not riding it as is, real pain in the asre!

Go to LBS buy one off the shelf and ride this weekend.

Busy this weekend, or I would have considered it.... Ultegra 6700 off Wiggle for £44, not too bad, although when you factor in the £36 chain I already bought, it's a pain, but that's the price you gotta pay for riding in all weathers throughout the winter and only cleaning the chain once every two weeks!

Ben6899

junglist_matty wrote:

Ben6899 wrote:

If you order online, make sure you get the same cassette (i.e. sprocket sizes) especially the smallest sprocket as that will affect which lock ring you need... and some cassettes come without a lock ring.

Really? I've never bought a cassette without a lockring before, although this is my first aftermarket road cassette, bought loads of Shimano MTB cassettes over the years; none have ever come without the lock ring,

Yep, some Campagnolo cassettes come without the lock ring. Though it looks like you're on Shimano so it's a moot point!

mercia_man

Get yourself a chain wear checker, such as a Park, replace the chain before it's too worn and you won't need to change the cassette every time you get a new chain.

dgunthor

buy cheaper chains and change them more often (using a chain wear tool) - can get 3 or 4 chains to a cassette then