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  1. #1
    mtbr member
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    Jul 2009
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    Using 32t middle with 36t bash on a 2x9 ok?

    Looking for an answer to a basic question....I have a set of M770 XT cranks and am running a 2x9 22-36 with a 36t E.thirteen bash. I am looking at swapping rings down to a 20-32 setup. My question-currently, the SLX double FD I have pulls to just above the bash lip when on the upper ring. I am thinking I will need to drop the FD to adjust for the new 20-32 setup, but am concerned that if I do that, the outer FD cage will butt up against the inside of the bashring and not allow the shift to the 32.

    So, long story long: can I use a 32t middle ring with a 36t bashguard in a 2x9 setup? Do I leave the FD where it is at or drop it? If I drop it, will it be able to shift to the 32t without clearing over the bash?

    Thanks in advance!

  2. #2
    Former Bike Wrench
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    Jan 2007
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    15,985
    Quote Originally Posted by bk12
    Looking for an answer to a basic question....I have a set of M770 XT cranks and am running a 2x9 22-36 with a 36t E.thirteen bash. I am looking at swapping rings down to a 20-32 setup. My question-currently, the SLX double FD I have pulls to just above the bash lip when on the upper ring. I am thinking I will need to drop the FD to adjust for the new 20-32 setup, but am concerned that if I do that, the outer FD cage will butt up against the inside of the bashring and not allow the shift to the 32.

    So, long story long: can I use a 32t middle ring with a 36t bashguard in a 2x9 setup? Do I leave the FD where it is at or drop it? If I drop it, will it be able to shift to the 32t without clearing over the bash?

    Thanks in advance!
    Leave the derailleur where it is (just adjust the H limit screw) and a 36t bash on a 32t chainring is fine.

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