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Posible abuse of carbon frame in rough terrain

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Posible abuse of carbon frame in rough terrain

Old 11-08-16, 03:53 PM
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maltess2
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Posible abuse of carbon frame in rough terrain

Two days ago I got into a travel path that became a trail full of rocks etc. I took my time and tried to ride carefully but It took a while to get out of there. The result was mud everywhere, a few holes in front tire, one puncture etc. I have the bike a Big clean and It look fine now, its a Cannondale Synapse carbon 105 2016.

The thing is I was riding today again, and I feel like more vibration in general, bumps and irregular asphalt seem to have more impact on the bike. Since I dont have much experience, I guess this is a nonsense thought, but... Would It be possible that the performance of the frame was affected by that abuse in the rough trail?
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Old 11-08-16, 03:56 PM
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No.
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Old 11-08-16, 04:00 PM
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You could look the frame over carefully with a flashlight and see if there are any cracks that might have happened on your ride.
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Old 11-08-16, 04:08 PM
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caloso
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Originally Posted by maltess2 View Post
Two days ago I got into a travel path that became a trail full of rocks etc. I took my time and tried to ride carefully but It took a while to get out of there. The result was mud everywhere, a few holes in front tire, one puncture etc. I have the bike a Big clean and It look fine now, its a Cannondale Synapse carbon 105 2016.

The thing is I was riding today again, and I feel like more vibration in general, bumps and irregular asphalt seem to have more impact on the bike. Since I dont have much experience, I guess this is a nonsense thought, but... Would It be possible that the performance of the frame was affected by that abuse in the rough trail?
I seriously doubt it.
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Old 11-08-16, 04:32 PM
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check all the bolts and skewers, tighten them to spec
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Old 11-08-16, 05:00 PM
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Originally Posted by stockae92 View Post
check all the bolts and skewers, tighten them to spec
This. ^^^^
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Old 11-08-16, 05:03 PM
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Originally Posted by exmechanic89 View Post
You could look the frame over carefully with a flashlight and see if there are any cracks that might have happened on your ride.
......
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Old 11-08-16, 05:03 PM
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Also, re-torque the headset / stem (google for directions)
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Old 11-08-16, 05:05 PM
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Vibration is a sign of imminent asplosion.
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Old 11-08-16, 06:05 PM
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I think it's probably due to the holes in your tire.
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Old 11-08-16, 10:06 PM
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It's mostly likely that stuff got stuck in the tire, or patching the holes didn't go quite right. Little rocks embedded in the front tire will *definitely** make your ride rougher.
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Old 11-08-16, 10:25 PM
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You realize they make cross, gravel and mountain bikes out of carbon, right?
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Old 11-08-16, 10:38 PM
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Originally Posted by 02Giant View Post
......
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Old 11-09-16, 01:11 AM
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It's done for.

On a more serious note, did you put more pressure in your tires after fixing the flats. If you were running the tire at like 85 psi and then jumped to to 110-120 you might feel quite the difference.
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Old 11-09-16, 06:57 AM
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I got into a patch of rough gravel. For about a mile afterward, I thought there was a problem. It seemed like I could feel every little pebble on the road. After that, it was fine.

In reality, the bike and tires were always fine. I was just overly aware of everything, after going through it. It was all in my mind.

Last edited by builderguy; 11-09-16 at 06:58 AM. Reason: punctuation error.
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Old 11-09-16, 07:22 AM
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Originally Posted by rms13 View Post
You realize they make cross, gravel and mountain bikes out of carbon, right?
Exactly... Pretty much all the big manufacturers make DOWNHILL frames from carbon. Also, carbon mountain bike rims, etc... If rocks would crack carbon no one would use the material in the bike industry.

Also, a great video for people that think carbon frames explode if you look at them wrong:

Or watch Roadbike Party.


Last edited by Facanh; 11-09-16 at 07:29 AM.
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Old 11-09-16, 08:48 AM
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I have a Trek 9700 mountain bike that I bought in 1998 I think. It's a carbon hardtail, and I've literally wrecked on it hundreds of times. Crashes included a broken helmet, a concussion, a separated shoulder, and countless cuts and gashes.

I kept hoping it would break so Trek would replace it and I'd get a frame that took a rear disk, but I finally gave up. I've been unable to break it regardless of how crappy my mountain biking skills are. There are lots of chips in the paint from rocks (both kicked up and fallen over onto) but they've all been there for years and don't seem to bother it.
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Old 11-09-16, 12:24 PM
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Originally Posted by maltess2 View Post
... Would It be possible that the performance of the frame was affected by that abuse in the rough trail?
I'll be the contrarian...
CrackedTarmac.jpg
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Old 11-09-16, 01:08 PM
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^ you broke that riding over rough terrain?
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Old 11-09-16, 01:10 PM
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Originally Posted by rms13 View Post
You realize they make cross, gravel and mountain bikes out of carbon, right?
Originally Posted by Facanh View Post
Exactly... Pretty much all the big manufacturers make DOWNHILL frames from carbon. Also, carbon mountain bike rims, etc... If rocks would crack carbon no one would use the material in the bike industry. Also, a great video for people that think carbon frames explode if you look at them wrong:
Or watch Roadbike Party. https://www.youtube.com/watch?v=xreZdUBqpJs
I used to trot out this same logical fallacy as well before I understood the differences in frames a little better.

Road frames and MTB frames are not made the same way, despite being made of the same material.

If you want to go off road with carbon, get one that was made to do it.
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Old 11-09-16, 01:17 PM
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Facanh
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Originally Posted by Jarrett2 View Post

If you want to go off road with carbon, get one that was made to do it.


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Old 11-09-16, 01:20 PM
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Originally Posted by Jarrett2 View Post
If you want to go off road with carbon, get one that was made to do it.

Any bike (regardless of frame material) should hold up to a bit of light off road work, the OP wasn't clear with the description of rocks, but suspect it was gravel size, which should be no issue for a road bike frame (the tires & wheels being another matter)

If your talking large size rocks, then get off and carry the bike rather than risk wrecking the wheels/tires.
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Old 11-09-16, 01:21 PM
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Originally Posted by Facanh View Post
Entertaining. But meaningless to the discussion at hand.
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Old 11-09-16, 01:24 PM
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Originally Posted by Jarrett2 View Post
Entertaining. But meaningless to the discussion at hand.
He did offroad, backflips and a flair in that video, and that "fragile" carbon race bike is fine, and the OP is asking about rocks cracking a carbon frame from some light off roading.

So you are saying CX and the new trendy "adventure go everywhere" carbon frames are completely different to carbon road frames in terms of the construction?

Last edited by Facanh; 11-09-16 at 01:28 PM.
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Old 11-09-16, 01:27 PM
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Originally Posted by Facanh View Post
He did offroad, backflips and a flair in that video, and that "fragile" carbon race bike is fine.
Do you believe reality tv shows are real as well?

Originally Posted by Facanh View Post
So you are saying CX and the new trendy "adventure go everywhere" carbon frames are completely different to carbon road frames?
Just going to leave this here:

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