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  1. #1
    mtbr member
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    May 2007
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    70

    Scratch mark or problem?

    Here's a pic of the chainstay on my 29er composite frame, non drive side. The "scratch" can't be felt with my fingernail, but since it wraps around the squared-off edge has me a little worried. Any suggestions?

  2. #2
    mtbr member
    Reputation: d365's Avatar
    Join Date
    Jun 2006
    Posts
    1,215
    seriously? you should play it safe, and sell that ruined frame to me. It's bound to asplode at any moment

  3. #3
    mtbr member
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    May 2007
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    70
    lol, bike shop co worker probably dropped his bike on mine in the break room

  4. #4
    mtbr member
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    Nov 2010
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    10
    I had the same problem in my top tube, at the end the scratch became in a big crack.

    ...Place a mark at the limit of the scratch and try to notice any chance---

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