Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
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I certainly see why you think it's cracked. I'm still open to the idea that something else is going on. This is what some people call a "crack indication."
if it is cracked, it does seem like a defect in the tube's manufacture. There isn't a lot of stress driving a crack in that direction, so my interpretation would be that there just isn't a lot of material along that line. So a replacement makes the most sense if that is economic. Bicycle frames don't just crack out in the middle of a tube, they crack at the ends or at braze on locations. Something has to be drastically wrong with a tube for a crack to occur in that location.
What brand is it?
I wouldn't ride it, but then again I tend to ride my bikes pretty hard. If you aren't going to be riding down any mountains, I'd probably just ride it and monitor it. I would be a lot more concerned if there was something near a lug.
Last edited by unterhausen; 12-28-09 at 12:29 PM.