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Shortening a chain
 

[Closed] Shortening a chain

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[#4238160]

Sorry, another newbie question im afraid.

I am converting from 2x10 to 1x10 and want to shorten my chain in the process (still got the same chain from when the bike was 3x10).

I have read how you can split a chain by identifying the specific pin and popping it out. How do you shorten the chain though? Do all the other pins come out too?

Can you then put a new connecting pin through any link?

Thanks in advance for any help.

ps, its a shimano mtb setup


 
Posted : 08/08/2012 1:22 pm
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Have you got a chain tool?

[img] [/img]

If you do, it's a simple job. If you don't, it isn't.


 
Posted : 08/08/2012 1:23 pm
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Yup, all the pins can come out. So first break the chain (ideally, leave the pin hanging off the outer edge of the link - makes it much easier to push back in). Then measure the chain by putting it round your front chainring and largest cog on the back. Find where it meets, leave 1 or 2 extra links, then break the chain again there and remove the excess length. Then marry the two ends back up and bingo.

PS - it's a lot easier with a missing link chain.
PPS - your chain gets weaker every time you break it. FYI.
Final PS - yes, you do need a chain tool of course, but any chain tool will do the job.


 
Posted : 08/08/2012 1:49 pm
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(ideally, leave the pin hanging off the outer edge of the link - makes it much easier to push back in).

Don't do that with a shimano chain. It will snap at this link. You'll need a special shimano pin to join it back up. Better still, use a reusable link. Note that this needs to be a 10 speed specific one.


 
Posted : 08/08/2012 2:07 pm
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Pushing a pin out and back in again is not the best idea. It leaves the join weak. Use a split link or a proper joining pin to be on the safe side.


 
Posted : 08/08/2012 2:07 pm
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And remember when you measure on a full susser let the air out of the rear shock and compress the suspension to full travel..


 
Posted : 08/08/2012 2:49 pm
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Better still, use a reusable link. Note that this needs to be a 10 speed specific one.

A 9 speed reusable/power link will work fine, I've been using one for the last 5 months with a 10 speed chain.


 
Posted : 08/08/2012 2:55 pm
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[quote=realman]]Have you got a chain tool?

[img] [/img]

I'm selling one, this isn't it though, mine is broken.

Sorry ๐Ÿ˜€


 
Posted : 08/08/2012 3:14 pm
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doesnt a 9spd 'powerlink' on a 10spd chain, foul on the cassette?

OP - what make is the chain? Anything other than shimano and it may have a split link already, if so undo this, then remove however many normal links you need, then rejoin the chain with the split link/power link.....

some 10spd links are damn tight, but if you have well used the chain it shouldnt cause too many problems.


 
Posted : 08/08/2012 3:28 pm
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doesnt a 9spd 'powerlink' on a 10spd chain, foul on the cassette?

Not noticed it on mine. I basically broke the Shimano connecting pin when fitting the chain so tried a 9 speed powerlink and it's been on there ever since. I've have heard of others using them too.


 
Posted : 08/08/2012 3:32 pm
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brilliant cheers guys.

i dont fancy reusing a pin anyway, just need to double check its a shimano chain but will get a new pin or a reuseable link if you reckon this will be better?


 
Posted : 08/08/2012 5:50 pm
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Actually, the others are right. I've been using KMC Missing Link chains for so long now I've not had to do this for a very long time. With KMC chains, you just pop out the pins, shorten the chain, then pop in the missing link - it's all very easy, and you can remove the chain tool-free afterwards. When I had a Shimano chain, I replaced the pins and didn't have a problem, but that was 15 years ago...and maybe I was lucky.


 
Posted : 08/08/2012 5:50 pm
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I was looking at the gold kmc chains, I only plan on shortening it once though then it shouldn't need to come off again.


 
Posted : 08/08/2012 6:32 pm
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Fair enough. Although if you need to take off your rear mech for any reason, a quick release chain comes in very handy. Gold chains are bit 'Flava Flav' for my tastes...


 
Posted : 08/08/2012 7:58 pm