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Trek OCLV 120 frame cracks(7 posts)

Trek OCLV 120 frame cracksPeter Scott
Jan 25, 2004 12:26 PM
Hi. I have what appear to be hairline cracks on the frame of my Trek bike. They appear inside the top of the forks just below the crown, on the seat tube below the front mech hanger, on the RHS chainstay an inch or so behind the bottom bracket. The one on the chainstay is visible on the carbon where the paint is off. I'm told they are superficial and in the coating only, don't worry. I bought the bike second hand so there's no warranty. Do they ever fail? Peter
re: Trek OCLV 120 frame cracksRusty Coggs
Jan 25, 2004 1:33 PM
It's not uncommon at the joints due to the paint being less flexible than the joint.
re: Trek OCLV 120 frame cracksAl1943
Jan 25, 2004 3:25 PM
A friend of mine had a 5500 chain stay break through just behind the bottom bracket. It was a '95 model. I haven't heard of any later models failing. My '98 has no cracks, not even in the clear coat. I remember 5 or 6 years ago when I was first hanging out around the forums there were a lot of negative comments about OCLV Treks and a lot of warnings about cracks. After Lance won 2 or 3 TdF's the negative criticism declined rapidly, or maybe the bikes just got better.
Most likely superficial, but check carefullyKerry Irons
Jan 25, 2004 4:33 PM
Many small cracks that can barely be felt as surface roughness are likely just paint/clear coat cracks due to flexing. If you can wiggle the tip of a razor blade or sharp knife in the crack, then you've got a problem.
Could just be the seams showing through...DaveLobster
Jan 26, 2004 12:28 PM
I am on my second OCLV, my older one being a '97 which was replaced under warranty. These frames are made out of tubes and lugs glued together. What happens to them after time is that the seams where the frame glued together become visible. Are the cracks you are seeing jagged or straight? If the cracks are nice and straight, then you probably just seeing the seam which is no problem. All of the locations you mentioned are areas where that frame has seams.

If the lines are jagged, then they my really be cracks. When they warrantied my '97, Trek told me that the frame had cracks near the headtube which I had never noticed. I had ridden the crap out of that bike, not even knowing they were there, and nothing happened to me. I would check and see how deep they are. If they are shallow I wouldn't worry about it, but I would check periodically to see they aren't growing.
Run a bead of super glue around the seems :) nmdivve
Jan 26, 2004 1:19 PM
Duct Tape is better. (nm)Chen2
Jan 26, 2004 2:25 PM