Broke a Shimano 5800 Chain. Fixable? Dangers?
09-06-18, 12:35 PM
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Broke a Shimano 5800 Chain. Fixable? Dangers?
See attached photo of break.
Can I just remove the broken link and put the chain back together?
Should I just junk the chain because its become worn?
I've had the chain for 1000 miles so not too long
Broken chain
Can I just remove the broken link and put the chain back together?
Should I just junk the chain because its become worn?
I've had the chain for 1000 miles so not too long
Broken chain
09-06-18, 12:51 PM
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Clean the chain off and examine it very carefully. The last time I saw a break like this (heck, the first and only time I saw a break like this!), there were cracks in roughly half of the external plates. It could have been fixed either of a couple of ways, and it would then have been a ticking time bomb waiting to break again. I replaced the chain.
09-06-18, 01:14 PM
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There are a few brands that sell quick links that may work with that chain.
However, the first step would be to get the exact amount of stretch.
Lay the chain out, and measure a foot or a couple of feet of chain. Slight tension is best.
If you are over about 0.5% stretch, just toss and replace.
However, the first step would be to get the exact amount of stretch.
Lay the chain out, and measure a foot or a couple of feet of chain. Slight tension is best.
If you are over about 0.5% stretch, just toss and replace.
09-06-18, 01:44 PM
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Thanks
Thanks. Less than 0.5% stretch
it broken when it got jambed in the FD.
chain length isnt a science so if i just remove a link there should be no problems?
it broken when it got jambed in the FD.
chain length isnt a science so if i just remove a link there should be no problems?
There are a few brands that sell quick links that may work with that chain.
However, the first step would be to get the exact amount of stretch.
Lay the chain out, and measure a foot or a couple of feet of chain. Slight tension is best.
If you are over about 0.5% stretch, just toss and replace.
However, the first step would be to get the exact amount of stretch.
Lay the chain out, and measure a foot or a couple of feet of chain. Slight tension is best.
If you are over about 0.5% stretch, just toss and replace.
09-06-18, 02:08 PM
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Wrap the chain around the largest rear sprocket and the largest chainring (with or without the derailleurs).
If your chain is long enough then you're fine. If it comes up short, then you'll need another half link from something (left over chain?).
Keep in mind that Shimano recommends replacing the chain pins when you link it back up.
It is hard to say what I'd do. If it fit, I'd probably toss it back on, although my primary 11s bike has pretty expensive sprockets, so I've been erring on the side of toss and replace (toss in a box, and perhaps re-use later, maybe on a different bike).
09-06-18, 04:40 PM
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+1. Or just buy one of the new 11sp chains that come with a quicklink, use the QL on your broken chain until the chain wears out and then transfer it to the new chain. Buying just the link is not a bad idea either since you can save it as a spare when you replace this chain.
09-06-18, 08:42 PM
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I’d just replace the chain. Yes, you could try to squeeze more miles out of the broken one. Why bother? The new one is going to work and feel better, plus you have the confidence on the road/trail of a new chain that was never stressed to breaking.
09-06-18, 09:00 PM
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Buy a new chain. A wear item..... I would have fears of breaking it again founded or not.
09-14-18, 01:18 AM
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09-16-18, 06:41 PM
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09-16-18, 07:22 PM
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Cage of rd "T" with chain stay is what is safest bet imo.
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