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  1. #1
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    Feb 2006
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    BB Length for Middleburn Duo

    While I was waiting for a reply from Middleburn, I thought I would post my question here to see if anyone has this setup.

    I need to know the best isis bb spindle length for Middleburn Duo cranks (29/42) with a bb shell width 68mm (clamp front der. not e-type). If needed, my rear cassette and der. is SRAM 11-32 with X.O medium cage.

    Thanks!

  2. #2
    mtbr member
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    Sep 2006
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    I run a 113mm with my duo crankset on a dmr switchback, and the chainline is fine, however my friend has a prophet and had to go to a 108mm with his. In most cases 113mm is the go.

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