It could be a paint crack, though it sure looks dangerous! I would put some serious fore/aft pressure on the fork while a trusted friend watched the "crack" for any movement. I would also see if a razor blade or very fine needle would penetrate the crack. Finally, I would pull the fork and headset lower cup (or whatever is in the head tube) and do a "tap test" around the circumfrence of the bottom of the head tube. If there is any sound change around the crack, then it's done. Stick a fork in it (pun intended).al0 said:
Kuma601 said:Looks suspicious. How many miles on the bike? Has it had any crashes?
That's reassuring. I'd be interested in follow-ups n how your ordeal goes. Good luck.al0 said:Anyhow the frame is 3 year old and the internet shop that sold it provides 5-year guarantee on its housebrand fames and cycles. Would see if this guarantee will be fulfilled.
wvucyclist said:20000 in 3 years, pretty impressive! I'm also interested in the service you get, keep posting updates!
Kuma601 said:Glad this wasn't serious. With any of these internet frames, one becomes wary how well the customer service and support will be. Keep riding!
QuattroCreep said:Please correct me if I am wrong, but his would be a very unusual place for an Aluminum frame to crack.
I thought they failed at or near the welds due to the heat of welding making the metal brittle. If they are not heat treated properly they stay brittle.
It was a good idea to get it checked out.