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rear mech tooth capacity?

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  • 16-09-2016 8:01pm
    #1
    lizzylad84
    Registered Users Posts: 1,421 ✭✭✭


    Anyone know how to determine the maximum size cassette I can use on a shimano short cage rear mech? Currently have either 25 or 27 lookin to switch to 32 for cx


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    #2
    easygoing39
    Registered Users Posts: 1,375 ✭✭✭easygoing39


    Look up the Shimano Tech Doc's for the mech in question.


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    #3
    Unknown Soldier
    Registered Users Posts: 2,124 ✭✭✭Unknown Soldier


    lizzylad84 wrote: »
    Anyone know how to determine the maximum size cassette I can use on a shimano short cage rear mech? Currently have either 25 or 27 lookin to switch to 32 for cx

    As said, http://si.shimano.com/ BUT it really depends on your rear hanger and stuff. I have seen people going on about using the B screws backwards to get a 12-30 used and others, like myself having no issues with just adding a 12-30.

    Possibly trial and error experimentation is needed.

    To be safe getting a GS rear mech is probably advisable.


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    #4
    Eamonnator
    Registered Users Posts: 6,561 ✭✭✭Eamonnator


    Unknown Soldier wrote: »
    As said, http://si.shimano.com/ BUT it really depends on your rear hanger and stuff. I have seen people going on about using the B screws backwards to get a 12-30 used and others, like myself having no issues with just adding a 12-30.

    Possibly trial and error experimentation is needed.

    To be safe getting a GS rear mech is probably advisable.

    I once needed extra length on a B screw. It never dawned on me to put it in backwards. I sourced a longer screw elsewhere. Now that I know this, I am quite confident, that I will never again have the same need again.
    Thank you.


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    #5
    lizzylad84
    Registered Users Posts: 1,421 ✭✭✭lizzylad84


    Threw a 11-32 on. Seems OK after a quick spin. Fingers crossed


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