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Just came across this on my bike, I'm thinking it's a crack, or the start of one, at the chainstay - bb junction 🙁
What do you think?
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ride it, keep an eye on it.
Measure it, ride on and measure again in a month....
if it's under warranty then get it looked at now.
if not either;
mark the end of current cracks with permanent marker and monitor or send ff to that carbon repair bloke to look at (I'm assuming it's carbon...)
I measured it and marked it after taking the photo. Probably going to have it looked at though, if only for peace of mind.
looks like a Roubaix to me
Surface breaking defect.
I'd take it out of service & have it inspected. What you see on the surface is no indication of what's underneath. I'm not going with the "monitor it & have another look later" rationalle. At what point do you retire it from use to either effect a repair or bin it.
D.