Chain length for a 50 x 27

JimboPlob
JimboPlob Posts: 397
edited June 2012 in Workshop
I ordered a compact chainset, 12-27 cassette and new chain.

When I opened the box, I can see they have given me a 114 link chain. Does that sound long enough for the 50 x 27???

Thanks

Comments

  • sungod
    sungod Posts: 16,558
    the correct chain length depends on more than the info you give, the chain will be too long, you'll need to cut it to fit your bike

    follow the instructions for the rear derailleur to determine correct length

    for shimano road they're all the same, so just follow the instructions here...

    http://techdocs.shimano.com/media/techd ... 702204.PDF

    if this cassette is a different size to the previous one, you should also adjust the rear derailleur, ditto for the chainset and front derailleur
    my bike - faster than god's and twice as shiny
  • andy_wrx
    andy_wrx Posts: 3,396
    It's not just your compact and your chainset : How big is your bike, how long are the chain stays ?

    See Sheldon's article on how to cut your chain to length http://sheldonbrown.com/derailer-adjustment.html#chain

    FWIW, I need to cut 4 links off a chain to fit my Spesh Roubaix with 50/36 and 12-27 cassette
  • arlowood
    arlowood Posts: 2,561
    andy_wrx wrote:
    It's not just your compact and your chainset : How big is your bike, how long are the chain stays ?

    Andy is right you need to factor on the chain stay length.

    Came across this useful link recently:-

    http://www.epicidiot.com/sports/chain_l ... tm#results

    Measure your chain stay as recommended and input the 50 and 27 where appropriate and Hey Presto you have the ideal length.

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