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  1. #1
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    Found a Rocky Mountain carbon frame, how do I know it's not defective/broken?

    Hi everyone,
    I'm new to this forums and I needed some help buying a newer bike.

    Brief intro: I've been street riding for about a year now, but I use a KMart mongoose MTB that I bought used for about USD$ 60. It's slowly breaking down so I'm thinking of buying a newer one.

    I recently saw a Rocky Mountain Vertex 70 carbon frame for USD$ 200. How can I know that this frame is actually carbon and is not defective or broken? Is that a good price for this frame?

    Thanks.

  2. #2
    Who is Lance Armstrong?
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    Someone else may likely correct me, but I think the only way to tell would be to bring it to a bike shop and they have some kind of xraying tool or something that can look for cracks. Idk, how I'd feel about a $200 carbon frame.
    '10 Giant Defy Advanced
    '11 Giant TCR Advanced
    '11 Cannondale CAAD10
    '09 Specialized Transition

  3. #3
    Senior Member
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    Quote Originally Posted by kaimat View Post
    Someone else may likely correct me, but I think the only way to tell would be to bring it to a bike shop and they have some kind of xraying tool or something that can look for cracks. Idk, how I'd feel about a $200 carbon frame.
    This is the only way to be 100% sure. If you can't do that, just look over the frame for any small cracks or chips. That is a $1000+ frame, if it is OK it is a killer deal.
    Cannondale CAAD9
    Quote Originally Posted by Beaker View Post
    I know but this is BF.

  4. #4
    Senior Member
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    You can try going up and down the tubes tapping them with a nickel. You'll hear what normal tubes sound like and if you find any places that sound significantly different then you likely have a problem.

  5. #5
    LBKA punkncat's Avatar
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    Being able to see through the frame to the interior parts in places you are not supposed to is usually a good indication. Same goes for angles that seem out of place or splinters hanging off a tube....
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