Another quality chain from Shimano

leaflite

I was cleaning my bike earlier today, when I noticed that the outer plates of 3 links in a row had snapped! This has happened last ride, as I hadnt noticed it when lubricating the chain before I went out. I was amazed that it hadnt totally snapped!

(apologies for the slightly blurry picture, but you get the idea)

The chain is a deore xt 10 speed item, which was only fitted late last year. According to my chain checker, it isnt even 0.75 worn! The faliure is nowhere near the joining pin, so the issue is not related to incorrect installation.

Ive had to buy a replacement already, as I need to use the bike, but is this chain faulty? Am I entitled to a replacement under warranty?

Thanks

benpinnick

The chain isnt faulty. Its shimano. Hard to tell the difference most times though. Next time, avoid shimano.

cooldad

+1 KMC potato

leaflite

The thing is though, I thought kmc made shimano chains?

The chain came free with the groupset and I thought I might as well use it-I wouldnt have bought one separately due to the numerous bad reviews. I just thought that one of the biggest companies in cycling would have resolved the issue!

benpinnick

IMHO its the pin joining mechanism on the chains that is flawed, as it creates unnecessary stress on the links. It probably doesnt matter who makes them - its a flawed design and always has been since they first launched them.

bennett_346

leaflite wrote:

The thing is though, I thought kmc made shimano chains?

What difference would that make? Even if they did make them they are different castings so not related to KMCs actual chains at all.

jndb72

leaflite wrote:

I was cleaning my bike earlier today, when I noticed that the outer plates of 3 links in a row had snapped! This has happened last ride, as I hadnt noticed it when lubricating the chain before I went out. I was amazed that it hadnt totally snapped!

(apologies for the slightly blurry picture, but you get the idea)

The chain is a deore xt 10 speed item, which was only fitted late last year. According to my chain checker, it isnt even 0.75 worn! The faliure is nowhere near the joining pin, so the issue is not related to incorrect installation.

Ive had to buy a replacement already, as I need to use the bike, but is this chain faulty? Am I entitled to a replacement under warranty?

Thanks

Really strange that. The exact same thing has happened to my chain, which only got fitted in February. Same 10 speed xt chain as well.

Chunkers1980

I'd just put a 10 spd quick link in there.

jndb72

Yep, that's what I did.

Seems to be holding up fine.

Cheers

leaflite

Chunkers1980 wrote:

I'd just put a 10 spd quick link in there.

Its quite hard to tell from the picture, but 3 outer plates in a row have actually failed. A crack is starting to develop in another plate further down the chain too. If I took the failed links out and put a quick link in, the chain would be too short. Several quicklinks would work, but at £9.50 each, its cheaper to buy a new chain.

bennett_346

I'd go for a new chain. It's just going to break more links.