Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member ScottNotBombs's Avatar
    Join Date
    Mar 2008
    Location
    Joliet, IL
    Posts
    405
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Carbon fiber damage

    So I was riding my bike on a worn chain and cassette, not really knowing how dangerous it could be and not having money to fix it. One day when I was sprinting the chain broke and got caught on the rear derailluer and locked up my wheel. I'm pretty sure my rear derailluer and hanger are garbage and my collar bones broken and my carbon drops are cracked. The chainstays, stem, and fork look fine, but how can I really tell? Cf can hide damage right? Should I just keep riding on them as long as there's no visible damage? I don't really want to take any more chances, I'm already off my bike for the next 4 months...

  2. #2
    Great State of Varmint Panthers007's Avatar
    Join Date
    Sep 2008
    Location
    Dante's Third Ring
    Posts
    7,481
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Bring it to a bike-shop. You need to have the frame/fork, etc. - examined by an expert who can determine if it has sustained damage. And what your recourse may be. Do NOT ride on a carbon-frame that is suspected of having sustained damage. Next time it may be a lot worse than a broken collar-bone.
    How do you keep an idiot in suspense?

  3. #3
    DRF aka Thrifty Bill wrk101's Avatar
    Join Date
    Jan 2008
    Location
    The NC Mountains
    My Bikes
    Too many to list, all vintage
    Posts
    18,870
    Mentioned
    71 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by Panthers007 View Post
    Bring it to a bike-shop. You need to have the frame/fork, etc. - examined by an expert who can determine if it has sustained damage. And what your recourse may be. Do NOT ride on a carbon-frame that is suspected of having sustained damage. Next time it may be a lot worse than a broken collar-bone.
    +1 What he said.

    If you want to start riding again, find yourself an inexpensive garage sale/thrift store bike.

  4. #4
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    22,528
    Mentioned
    69 Post(s)
    Tagged
    1 Thread(s)
    +1, Have parts you want to continue using examined by an expert. The problem is that separating true experts from wannabes is about as difficult as knowing if a CF structure has hidden damage.

    Before going any further, eyeball each component for evidence of direct impact or stress cracking in the gel coat. Depending on how you crashed components at the front end of the bike may not have suffered high impact.

    But if in doubt, throw it out is always good practice on bikes the same way it is on food that's been left in the fridge longer than you remember.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  5. #5
    Senior Member ScottNotBombs's Avatar
    Join Date
    Mar 2008
    Location
    Joliet, IL
    Posts
    405
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks, looks like I'll be going to the bike shop when I can find someone to take me. I have a couple good ones around me. I'm pretty sure I went over the bars and the bike came straight forward with me because both the brifters were turned all the way inward. Those seem fine though, other than some aesthetic damage.
    I have an old miyata that I use as a beater so I still have something for when I'm better.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •