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  1. #1
    Lula Mae = 15 lbs. bike_boy's Avatar
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    Dec 2007
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    I keep hitting <Escape>, but I'm still here!
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    2011 Trek Madone 6.5 w/SRAM Red
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    Help on install of 2 piece crankset

    Ok, so I've swapped my 53/39 Shimano crankset for a 50/34 SRAM Rival
    2 piece crankset. The Shammino adjustable BB had a large external metal
    disc on the drive side. (behind lockring) I believe this disc piece is to help
    protect my carbon frame in the event the chain falls off the inner chainring.
    Is that correct?

    Should I re-use this disc and install on drive side (if wide enough) behind
    the GXP external cup of my SRAM Rival crankset? It is a very thin piece of
    aluminum.

  2. #2
    Senior Member
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    Dec 2006
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    Aurora,CO
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    It wont hurt to put that in there as added protection from the chain grining on the carbon if it falls off. Should work just fine.

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