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Chain length

Old 12-05-14, 02:34 PM
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Covanant
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Chain length

Bought a new shimano 105 ,11speed groupset.is the chain set for length already?
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Old 12-05-14, 02:40 PM
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No. The chain comes in a standard length. It's up to you to shorten it to suit your particular gearing and the frame's chainstay length.
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Old 12-05-14, 04:57 PM
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Think about it-
Would you expect a large frame bike to have exactly the same length chain stays as a small?
Also consider the different size chain rings or cassettes largest cog.
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Old 12-05-14, 05:28 PM
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Originally Posted by Bill Kapaun View Post
Think about it-
Would you expect a large frame bike to have exactly the same length chain stays as a small?
Also consider the different size chain rings or cassettes largest cog.
Bill- While I agree with you about bike size and chain length (or chain stay length actually) most of the mainstream bike industry doesn't see the need for a larger bike to have longer chain stays. One more example of market driven frame design IMO. Andy.
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Old 12-05-14, 05:39 PM
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I don't look at a lot of bike specs, it seems at least some manfs. will use 2 lengths to span the gap from extra small to extra large frames.
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Old 12-08-14, 05:42 AM
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Thanks guys
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Old 12-09-14, 10:39 AM
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Isn't somebody going to tell him how to properly size his chain?
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Old 12-09-14, 10:50 AM
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Originally Posted by Grand Bois View Post
Isn't somebody going to tell him how to properly size his chain?
Hey, the the OP has a derailleur bike, so here at BF people feel free to derail the post.

To answer the original question.

New chains are usually sold long enough to meet the needs of most riders using relatively wide gearing. That means that most riders will probably have to trim off 2-6 links or so. When measuring there are two considerations.

1- the chain must be long enough to loop the two largest sprocket together with an inch to spare. Consider this the absolute minimum length.
2- the chain must be short enough to loop the two smallest with the RD taking up all the slack. There's some fudge room here if necessary, though it's to be avoided.

Most bikes have some latitude between the maximum and minimum and you'll find people adamant about which is the "right" length. IMO, anything between the two is fine, though an experienced mechanic can often improve RD performance by selecting an optimal length between the two. Personally I lean toward using chains close to the longest possible.
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Old 12-09-14, 11:01 AM
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And, lots of videos on utube to show anyone how to do it.
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