IS / Post mount

sliperyslope
sliperyslope Posts: 11
edited January 2014 in MTB workshop & tech
Hi all. Is there a disadvantage in terms of breaking performance if you have to use an adaptor to mount post mount caliper to IS mount on forks. I'm just thinking in terms of rigidity. :?:

Comments

  • BigAl
    BigAl Posts: 3,122
    No.
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    Duster
    My Bianchi
  • cooldad
    cooldad Posts: 32,599
    You don't really have a choice anyway.
    I don't do smileys.

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  • The Rookie
    The Rookie Posts: 27,812
    It sounds like you have IS mount forks and are considering which calliper to use?

    An IS calliper will save you about 35grams in not needing an adaptor and 2 extra bolts, otherwise there is no benefit of IS over PM. (I have an IS calliper on the front of my commuter and one on the rear of my MTB and the weight savings were 34 and 35g respectively compared to a PM plus adaptor, but in each case I wasn't swapping out it's just I bought one instead of the other).
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.

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