Carbon Fiber Experts... please chime in on your thoughts on this picture

Discuss light weight issues concerning road bikes & parts.
Post Reply
Posts: 316
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

it seems to propegate out from the NDS drop out.
i did the coin-tap-test, and there was no dead-thud... all was plinky-tinky

edit: i don't know how to embed pictures from imgur... obviously


by Weenie

Posts: 1789
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

I'm no carbon expert but that looks rather insignificant. :lol:

I understand an expensive frame comes with high expectations but sometimes it seems the expected level of perfection is too high. Don't you think?

Carbon experts like Raul at Luescher I imagine would say the only way to be sure is by an ultrasound test.


User avatar
Posts: 504
Joined: Tue Jan 19, 2016 7:10 am

by Lelandjt

Looks like a paint crack as far as I can tell from the pic.
The coin test only works on tubes. This is a solid part.

User avatar
Posts: 392
Joined: Sun Nov 29, 2015 5:47 pm
Location: Near DFW Airport

by IrrelevantD

Just guessing here, but I'm going to agree with others and say that's just paint. Right there at the dropout, it's going to be pretty heavy duty. Possible that's a joint where two pieces were bonded together, perhaps the clamp area is separate from the junction of the stays and bonded in? Without being able to see under the paint, probably pretty hard to say. I would think it would be safe to ride, but I'd keep an eye on it for a few weeks and check it after my rides to make sure it's not expanding. I'd also make sure you're not over-tightening your QRs.
* There is a 70% chance that what you have just read has a peppering of cynicism or sarcasm and generally should not be taken seriously.
I'll leave it up to you to figure out the other 30%. If you are in any way offended, that's on you.

Post Reply
  • Similar Topics
    Last post