Chainring modifications

Koymtb
Koymtb Posts: 3
edited December 2017 in MTB workshop & tech
I have an XT 2x10 drivetrain on my Giant Anthem with a 40-28 chainset and 11-36 cassette. Can i replace my 28 chainring for a 22 without compromising front derailleur shifting?

Comments

  • cooldad
    cooldad Posts: 32,599
    It'll be a massive jump and you'll need to reposition the mech lower.
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  • JBA
    JBA Posts: 2,852
    At the moment your drive chain capacity is (40-28)+(36-11) = 37teeth.

    What you are proposing will give you a capacity of 43t.

    The maximum capacity of the XT rear derailleur is, I think, 43t so you will be on the limit as far as that is concerned.

    However, the front derailleur may not be able to handle such a big change.

    Is it the original chainset? I don't think I have ever seen an Anthem with such a big chainring.
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  • 02gf74
    02gf74 Posts: 1,171
    Xt 10 speed mech is listed as having 14t capacity.

    So 40 - 14 is as low as is recommended. Do the sums and I think what you are planning is unlikely to work.
  • Koymtb
    Koymtb Posts: 3
    Thanks for the info.my groupset came from a Merida 99 xt.
  • 02gf74
    02gf74 Posts: 1,171
    Koymtb wrote:
    .my groupset came from a Merida 99 xt.

    I don't believe the make and model of the bike alters the operating parameters of the shifter.;)

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