2 weeks and already a crack?
:( i just got my madone 5.5 2 weeks ago today, only 224 miles, and noticed this under the seat mast when cleaning the bike. I cant tell if its in the clear coat. I took the bike over to my LBS and they said it was fine, Im in the process of contacting trek, i'm just waiting for an email back just to get a second opinion.
btw I have a torque wrench, the spec is 7nm for the seat clamp. My LBS did say though that if it gets worse it'll definitely be replaced under warranty, I just need to hear back from Trek to see if its safe to ride. Thanks http://www.flickr.com/photos/75617289@N05/8747564175/ |
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I have no long term experience with carbon posts.
I could be wrong but clearcoats and paint are not very integral to the structure of carbon from what I understand. The paint is there to cover up voids/air pockets left over from the molding process so it looks shiny and nice. If it's just surface scratches, I wouldn't worry, but if it's in the carbon you should be concerned. Perhaps a carefully worded letter to Trek stating you are not at ease might get you a new post? Or maybe mail it to them for inspection. |
Originally Posted by ttakata73
(Post 15637257)
Doesn't seem right to me but I have no long term experience with carbon posts.
Maybe it's structurally OK. A carefully worded letter stating you are not at ease and will tell every friend and forum of this situation might get you a new post. |
Hard to tell what that is. It looks like a crack, but it could also just be a scratch on the clear coat. A second opinion from Trek is needed at this point.
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Take a quarter out of your pocket. Start tapping the seatpost above the flaw (at this point I think we can agree there is a flaw) and work your way down. If it sounds solid until you get to the flaw and then sounds dull, then starts sounding solid again below the flaw then it's highly likely that your seatpost is cracked.
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Originally Posted by ttakata73
(Post 15637257)
I have no long term experience with carbon posts.
I could be wrong but clearcoats and paint are not very integral to the structure of carbon from what I understand. The paint is there to cover up voids/air pockets left over from the molding process so it looks shiny and nice. If it's just surface scratches, I wouldn't worry, but if it's in the carbon you should be concerned. Perhaps a carefully worded letter to Trek stating you are not at ease might get you a new post? Or maybe mail it to them for inspection. |
Should have bought a frame made out of some sort of metal instead of plastic...
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Originally Posted by CrankAndYank
(Post 15637728)
Should have bought a frame made out of some sort of metal instead of plastic...
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Originally Posted by cafzali
(Post 15637913)
Another uninformed post about carbon frames. If you really feel this way, you shouldn't fly on a modern airliner either because they too are composite-based and have been for about 10 years.
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How did that get so scratched?
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Originally Posted by CrankAndYank
(Post 15637728)
Should have bought a frame made out of some sort of metal instead of plastic...
Originally Posted by Bike Rebel
(Post 15637690)
Take a quarter out of your pocket. Start tapping the seatpost above the flaw (at this point I think we can agree there is a flaw) and work your way down. If it sounds solid until you get to the flaw and then sounds dull, then starts sounding solid again below the flaw then it's highly likely that your seatpost is cracked.
I did, the bubbled up paint part is muted/dull when I tap on it, so is the crack. I'm still waiting to hear back from Trek |
Originally Posted by Bike Rebel
(Post 15637690)
Take a quarter out of your pocket. Start tapping the seatpost above the flaw (at this point I think we can agree there is a flaw) and work your way down. If it sounds solid until you get to the flaw and then sounds dull, then starts sounding solid again below the flaw then it's highly likely that your seatpost is cracked.
Don't freak out. Clear coat can be very fragile, but it's no big deal. |
[QUOTE=nelson4568;15637947]I have 8 steel frames ;)
/QUOTE] A friend collects old obsolete car as well. |
Take it to a shop. let them deal with trek.
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what'd you do to it?
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Originally Posted by cafzali
(Post 15637913)
Another uninformed post about carbon frames. If you really feel this way, you shouldn't fly on a modern airliner either because they too are composite-based and have been for about 10 years.
Oops. |
I don't know unless I see it in person, but my first impression is that it is a scratch and not a crack.
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Originally Posted by CrankAndYank
(Post 15638622)
Yep - including AA 587, from which the entire vertical stabilizer assembly separated in flight from what, up until then, had been normal control inputs.
Oops. |
It's a scratch. What a bunch of chicken littles.
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oohh yay, another steel vs plastic fight!
:popcorn |
Originally Posted by ahsposo
(Post 15638899)
It's a scratch. What a bunch of chicken littles.
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Originally Posted by roadiejorge
(Post 15638936)
oohh yay, another steel vs plastic fight!
:popcorn |
Originally Posted by roadiejorge
(Post 15638936)
oohh yay, another steel vs plastic fight!
:popcorn |
What it looks like is someone rode it without the seat post clamp being tight. The scratches are from the post slipping or someone pulling it up without loosening the clamp
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