the head of a bottle cage screw broke off on the seat tube in a way it couldn’t be extracted. I think it’s an aluminium screw
I’ll just have to leave it as extracting it is a pain I’m told. Is there a better material of screws to use? Steel or brass?
by h2tcrz1s
8 Comments
Not uncommon a frame shop can fix with a tool for that purpose.
Just happened to me last week. A local carbon repair shop quoted $300-350 to repair it. I’m seeking other options.
Not sure what carbon has to do with it, on all my carbon frames the bosses are metal. I have never had a bolt break off. Grease your bolts and don’t over tighten. Usually the suggested torque for these is 1 nm or below.
By not buying weak plastic bikes?
Like I told you in the other thread, it has to be drilled and extracted. The extractor will be tiny but most bike shops or machine shops will be able to do this for 15min labor or less. I will caveat that if you overtorqued it so much that the rivnut/insert inside the frame is loose or spinning, then it would be a much bigger job.
It looks like only the bolt snapped, it should be easy for any shop to take it out with an extractor or a left handed drill bit
How do you avoid it? Wash your bike, and make sure it is dry. Install the bolts with grease or animti seize. Every once in a while take the bolts out, clean the bolt and the boss, grease and reinstall to the proper torque.
Maybe superglue or carefully weld a piece of metal to it.