How bad is this crack in my bike frame?

Robertmi
Robertmi Posts: 3
edited December 2015 in Workshop
Dear fellow riders,

This is my first post here.... Please be kind....

I got my first ever carbon bike a coupe of weeks ago and I guess I cracked the seat tube by over tightening the seat post! :(

I have since done extensive research and reading on the subject (too late I know) so I know I should get a torque rench and be more careful but my main concern at this stage is how bad this crack really is and how to repair it...

https://www.dropbox.com/s/ifqzo6w0daczms4/Photo%2014-12-2015%2C%2012%2013%2031.jpg?dl=0


I hope I can get some feedback from some of the more experienced riders out there.


Thanks in advance!


Robert

Comments

  • Bobbinogs
    Bobbinogs Posts: 4,841
    I couldn't get that link to work. Can you try and post the image??
  • sungod
    sungod Posts: 16,885
    you need to get it repaired otherwise over time the crack may propagate further around the tube, shouldn't be complex

    there are several cf repair specialists, if you say which area you're in maybe someone can recommend a local one, being able to deliver/pickup yourself saves the hassle/risk/cost of shipping

    for instance, a quick google finds...

    http://londoncarbonrepairs.co.uk/
    http://www.carbonology.com/carbonology-repair-service-c-147.html
    http://www.carbonbikerepair.co.uk/
    http://spirecycles.co.uk/services/carbon-bicycle-frame-repairs/

    ...there are more
    my bike - faster than god's and twice as shiny
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Link doesn't work

    In future remember: carbon paste and torque wrench or Ritchey torque key and jobs a fish, as they say.
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • I am attaching the image, hopefully its accessible now.

    I have been out for a 57km ride with the bike this afternoon and the crack does not seem to be any different. I also did not hear any creaks, etc.

    And btw, I am based in Hannover, Germany...
  • sungod
    sungod Posts: 16,885
    it has cracked at the circular strain relief at the end of a slot, a high stress area, now the forces that would be transmitted through the cracked part are instead mostly at the tip of the crack

    you may not hear anything, it might grow 0.001 or 0.01mm per ride, or it might be 0.1mm, but suddenly you might find it cracks halfway around the tube when you hit a bump or shift weight

    the thing is, if you have a crack in a stressed area you have a problem, personally i would fix it before it gets worse, as you can be sure it will not get better!
    my bike - faster than god's and twice as shiny
  • Monty Dog
    Monty Dog Posts: 20,614
    It's repairable, get it fixed. Leave it and it'll only get worse
    Make mine an Italian, with Campagnolo on the side..
  • Bobbinogs
    Bobbinogs Posts: 4,841
    Most people are saying the same thing on Road.cc :wink:
  • svetty
    svetty Posts: 1,904
    You could try installing a jubilee clip around the seat tube below the seat post clamp as a temporary measure to reduce the propogation rate until getting it repaired properly (use tape under clip to protect the finish).......
    FFS! Harden up and grow a pair :D
  • pilot_pete
    pilot_pete Posts: 2,120
    You could try installing a jubilee clip around the seat tube below the seat post clamp as a temporary measure to reduce the propogation rate until getting it repaired properly (use tape under clip to protect the finish).......

    Now you are joking aren't you? :shock:

    A jubilee clip? To reduce the propagation rate! More likely to further damage the post/ frame as the jubilee clip bites into it... :roll:

    It will be a simple repair for one of the carbon specialists listed above. That is the ONLY way to go if you don't wish to damage your bike further.

    PP
  • k-dog
    k-dog Posts: 1,652

    It will be a simple repair for one of the carbon specialists listed above. That is the ONLY way to go if you don't wish to damage your posterior.

    FTFY
    I'm left handed, if that matters.