Chain length

jus71n
jus71n Posts: 138
edited July 2013 in Workshop
Needing an easier gear on the hills, My bike has a double 39/53 & came with a 12-12 rear, going to a 11-28 or 12-30 for some more options, will also be buying new KMC chain. So on sizing the chain there seems to be a few methods, large/small and align the rear mech verticly, large/large (through rear mech) till nearly tight, large/large (excluding rear mech) and add 2 links..... Cripes is there an idiots guide? cos much as I like to do bike maintenance myself, I may opt for LBS.

Oh & while I'm here is 1 link literally 1, or 1 & 1/2 :shock:
S-Works Tarmac Disc Di2 2017 :shock:

Felt AR3 Di2 :) (6870 11spd upgrade) 2012 - Now gone.

Cannondale Synapse Carbon Disc Ultegra 2016

Comments

  • bikeit65
    bikeit65 Posts: 999
    http://www.machinehead-software.co.uk/b ... hcalc.html

    This any good?
    https://www.instagram.com/seanmcgrathphotography/
    Trek Domane SL7 GEN4
    Planet X RT58
    Cannondale CAAD 10 2012.
    Pain.. Is weakness leaving the body.

    HATING LIFE-CYCLES FROM 2011
  • jus71n
    jus71n Posts: 138
    edited July 2013
    Thanks.... that says 55 inches (or links)
    S-Works Tarmac Disc Di2 2017 :shock:

    Felt AR3 Di2 :) (6870 11spd upgrade) 2012 - Now gone.

    Cannondale Synapse Carbon Disc Ultegra 2016
  • rolf_f
    rolf_f Posts: 16,015
    Or just small small with the slack taken up. If you have that right, and there are problems at the big - big end you need a bigger mech!
    Faster than a tent.......
  • keef66
    keef66 Posts: 13,123
    "large/large (excluding rear mech) and add 2 links"

    That's what I do. (2 links is 2 inners and 2 outers) That way you know if you do end up selecting big / big you're not going to drag your rear mech into the cassette.

    If the mech then won't take up the slack in the small / small combo then something else is amiss.

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