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Avlrider
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Carbon repair for bikes
05/18/20 at 1:21pm
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Does anyone or any shop do carbon fiber repair on bike specific parts. 
I may have a cracked handle bar. Im looking to get it fixed before it snaps off during a ride.

Any input will help. Thanks
  
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Slothzilla
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Re: Carbon repair for bikes
Reply #1 - 05/18/20 at 2:21pm
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Yikes.... get a new handlebar instead of trying to have it repaired.
  
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49erRider
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Re: Carbon repair for bikes
Reply #2 - 05/18/20 at 2:58pm
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Yes, I agree.  For the cost of a new bar, I would go that route.
  
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Tom F
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Re: Carbon repair for bikes
Reply #3 - 05/18/20 at 6:17pm
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New handlebar vs. emergency room visit? Which is cheaper and affords less down time?
  

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IntheBush
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Re: Carbon repair for bikes
Reply #4 - 05/19/20 at 3:28am
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If it's really cracked, there aint no fixing it I would trust.

Disassemble it and tap it a long its length with a small screwdriver.
If the tone changes around the crack then it's probably cracked through the structure and should be retired.

If the tone doesn't change, it's probably just a scratch in the resin on the outside and hasn't compromised the structure underneath.

Clearly if the bar is making noise or you can see the crack moving when you ride it should be retired.
You can also take to a shop like Cycle Path for inspection. Mark knows this stuff well.

How do you think you cracked it?

I've got a seat post on my carbon hard tail that I've been riding for years that has tons of surface cracks/marks in it. But it's not cracked. And it's as solid as the day I mounted it.

All three of my bikes have carbon handlebars. Anytime I relocate a clamp, even with proper torque there's always a mark of some kind left behind. But these are only on the surface and don't affect the integrity of the bar at all.

In tests, I've run over these handlebars on top of 2x4's on each end with an F-150 with no structural damage whatsoever. I've seen these bars bend 3 1/2 to 4 inches and snap right back to true as if nothing happened. They're tough as nails. But anything can be damaged or broken with enough, or the right kind of force. With carbon, hard impacts or over-torquing is where most damage occurs.
  

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mountainbiker90
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Re: Carbon repair for bikes
Reply #5 - 05/19/20 at 12:35pm
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A handle bar is something you donít want to have trouble with. To add to that, carbon repair of any type will amount to as much as, or more than, the cost of a new one. A frame is costly and often repairable. A bar, not so much.
  

Yeah, to the best of my knowledge:)
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