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Discussion Starter · #1 ·
Rough start to the week! Laid the bike down and took a nice little chip out of the head tube. Now I have some exposed fibers. Basic quarter test, doesn't sound dead or hollow. Just want to make sure that an epoxy is the appropriate approach?

First carbon frame, still learning. I will attach a few pictures. Any help would be greatly appreciated!

(side note: I have already submitted a warranty request for crash replacement with Santa Cruz as added precaution)
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The crash replacement warranty is a good move for now.
Its hard to tell just with pictures how bad the damage is. The thing that worries me are the two parallel cracks in the paint which could suggest that the area got pushed in a bit during the impact. If Santa Cruz refuses the crash replacement warranty I would bring the frame to a carbon fiber repair specialist for a proper inspection.
 

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Discussion Starter · #6 ·
The crash replacement warranty is a good move for now.
Its hard to tell just with pictures how bad the damage is. The thing that worries me are the two parallel cracks in the paint which could suggest that the area got pushed in a bit during the impact. If Santa Cruz refuses the crash replacement warranty I would bring the frame to a carbon fiber repair specialist for a proper inspection.
Thank you!! Appreciate the insight
 

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It looks to be a bit more than just paint to me. It looks like it has some depth to it, like a puncture. Carbon doesn't like pointy rocks.... baseball bats are fine, just not pointy rocks.

Do you have a SC dealer near you? I'd let them look at it too, see what they say. Wonder how long you'll have to wait for a crash replacement frame?

Might consider adding some frame protection to your carbon in the future. It may have not made a difference in the outcome, but it might have... if it is just paint, it would've protected that.
 

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No need to challenge me as I fully confess I don't have a stitch of knowledge about the engineering it takes to understand if it should be ridden. That said, if it were a hardtail frame that exerts pressure on the top tube from the head tub and the seat stays, I would absolutely not ride it. Sort of like how you can stand (I'm too fat now) on a beer can and it will hold you up until you talk your drunk supermodel wife into poking the sides. That same pressure is likely greatly reduced as it is isolated into the linkage and shock.
 

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No need to challenge me as I fully confess I don't have a stitch of knowledge about the engineering it takes to understand if it should be ridden. That said, if it were a hardtail frame that exerts pressure on the top tube from the head tub and the seat stays, I would absolutely not ride it. Sort of like how you can stand (I'm too fat now) on a beer can and it will hold you up until you talk your drunk supermodel wife into poking the sides. That same pressure is likely greatly reduced as it is isolated into the linkage and shock.
You have a better understanding of basic engineering principles than most of the engineering students I have met in first year.
 

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That's an easy carbon fiber repair fix, but don't order those "patches" off amazon or ebay, those are junk and not actual structural repairs. A CF repair is good here because the damage is in the middle of a tube, that's the best place to have a CF defect, if you have to have one. Do not ride until repaired.
 

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Discussion Starter · #14 ·
That's an easy carbon fiber repair fix, but don't order those "patches" off amazon or ebay, those are junk and not actual structural repairs. A CF repair is good here because the damage is in the middle of a tube, that's the best place to have a CF defect, if you have to have one. Do not ride until repaired.
My man, thank you! Was hoping for some good news since I just heard back from Santa Cruz and all they can offer is a CC front triangle for $800.

I'll get to work!
 

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Hmmmm. Looks like you have damaged/delaminated some of the carbon layers. The paint crack extenting forward suggests deeper structural delamination.

Go for a crash warrantee if it exists.

To repair this you need to understand the depth and length of the delamination. It could be mostly superficial. Or the underlying structure could be torn.

Superficial damage can easily be fixed with epoxy or even a superglue for a quick non structural fix up.

Structural damage is a different fish. You then need to carbon wrap a sleeve to that section of frame without creating stress risers at the end of your wrap.

Take it to a carbon/fibre glass guy for closer inspection.
 

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My man, thank you! Was hoping for some good news since I just heard back from Santa Cruz and all they can offer is a CC front triangle for $800.

I'll get to work!
-You are better off with the Crash-Replacement from Santa Cruz honestly.... The ONLY Carbon repair of that magnitude i'd trust is Calfee Design and they ain't cheap and it will likely not be perfectly color-matched.

As others have said, i too would not recommend riding it in that condition, Carbon Fibers are not good for your diet. ;)
 
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