SRAM rear mechs

The Rookie
The Rookie Posts: 27,816
edited April 2012 in Workshop
HI, don't post often in the road bike section, but this is definately one for you roadie types....

My commuter runs an 11-28 rear cassette (9 speed) single ring up front, it currently uses an X0 twist shifter (flat barred, I like the lack of clutter and light weight a grip shifter gives) with an X9 (long cage) rear mech, I'm looking at swapping to a short cage road rear mech but have no idea what will work, are ten speed rear mechs compatable with 9 speed? (if so Force looks good)......anyone?
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.

Comments

  • smidsy
    smidsy Posts: 5,273
    Mechs are not speed specific, they just move as far as the shifter tells it.
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  • The Rookie
    The Rookie Posts: 27,816
    smidsy wrote:
    Mechs are not speed specific, they just move as far as the shifter tells it.
    Shimano are, so are SRAM different?
    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.
  • ChrisSA
    ChrisSA Posts: 455
    The Beginner wrote:
    smidsy wrote:
    Mechs are not speed specific, they just move as far as the shifter tells it.
    Shimano are, so are SRAM different?

    No, Shimano are not. The cable pulls a given amount, and the mech moves a given amount. You only need compatible shifters and cassettes.
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  • Mark2Bikes
    Mark2Bikes Posts: 127
    This is related to the question I just posted about flat bar shifters. Are you saying that with a Shimano 9 spd flat bar shifter, a Campag 9 speed rear mech and a Shimano rear Mech everything will be fine? Surely that assumes that Campag and Shimano mechs move the same mm per mm of cable pull - seems unlikely given different design / leverage?!
  • The Rookie
    The Rookie Posts: 27,816
    ChrisSA wrote:
    The Beginner wrote:
    No, Shimano are not. The cable pulls a given amount, and the mech moves a given amount. You only need compatible shifters and cassettes.
    Shimano MTB 9 & 10 speed mechs move a different amount for the same cable pull - yes, that's why I'm asking, however despite your failure to actually answer the question asked, I assume I can use a SRAM '10speed' mech with my '9speed' shifter.
    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.
  • desweller
    desweller Posts: 5,175
    Yes - as long as your 9-speed shifter is SRAM then it will work with all SRAM 1:1 rear derailleurs.
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  • ChrisSA
    ChrisSA Posts: 455
    The Beginner wrote:
    ChrisSA wrote:
    The Beginner wrote:
    No, Shimano are not. The cable pulls a given amount, and the mech moves a given amount. You only need compatible shifters and cassettes.
    Shimano MTB 9 & 10 speed mechs move a different amount for the same cable pull - yes, that's why I'm asking, however despite your failure to actually answer the question asked, I assume I can use a SRAM '10speed' mech with my '9speed' shifter.

    Ah, but the Shimano road rear mechs do*. And this is the road forum :lol:

    *Apart from some ancient DA kit.
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  • The Rookie
    The Rookie Posts: 27,816
    ChrisSA wrote:
    Ah, but the Shimano road rear mechs do*. And this is the road forum :lol:
    So say road then! :D
    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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