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This is intersting..UV light on carbon fiber

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This is intersting..UV light on carbon fiber

Old 01-23-23, 01:06 AM
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alfaspider
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This is intersting..UV light on carbon fiber

i fly fish and tie my own flys..one of the tools we use , is a uv cure epoxy... i was playing around with the UV light on my bake.. and i noticed on some carbon parts like my campagnolo record crankset..nothing happends.. but on some carbon parts it fluoresces.. any thoughts here?
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Old 01-23-23, 01:40 AM
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Some component of the epoxy or clearcoat is UV reactive. Different companies use different products so some fluoresce, some don;t
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Old 01-23-23, 02:30 AM
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Has your dog been near your bike?
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Old 01-23-23, 07:47 AM
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I don't think the UV light is revealing anything about the epoxy in the carbon itself. Bike stuff uses epoxies that cure mostly under heat.
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Old 01-23-23, 08:08 AM
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UV on bare carbon fiber, start @ 10:19

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Old 01-23-23, 10:04 AM
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Originally Posted by SlowJoeCrow View Post
Some component of the epoxy or clearcoat is UV reactive. Different companies use different products so some fluoresce, some don;t
100% complete and accurate description of what is going on.
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Old 01-25-23, 10:03 AM
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Carbon fiber bikes are just a part of the throw away society we have now. They are like most things these days, nothing is built to last.
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Old 01-25-23, 10:10 AM
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Originally Posted by rydabent View Post
Carbon fiber bikes are just a part of the throw away society we have now. They are like most things these days, nothing is built to last.
Presumably, in order to make this claim, you have some data on the percentage of CF bikes that survive X years or X miles and compare unfavorably to bikes made of steel, aluminum, or titanium. If you don't have that data, then you are expressing bias, not facts. And before you start, I have only ever owned steel and Ti frames. My current and previous Ti frames have about 240K accumulated miles between them.
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Old 01-25-23, 12:19 PM
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Originally Posted by rydabent View Post
Carbon fiber bikes are just a part of the throw away society we have now. They are like most things these days, nothing is built to last.
All equipment has finite lifespan. The problem with carbon fiber, unlike steel, aluminum, or presumably titanium, is that it is almost impossible to recycle once its service life is done.
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Old 01-25-23, 12:41 PM
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Originally Posted by rydabent View Post
Carbon fiber bikes are just a part of the throw away society we have now. They are like most things these days, nothing is built to last.
Ridiculous, as usual. I fully expect all of my CF bikes to outlast me. Nothing indicates they won't do exactly that.
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Old 01-25-23, 12:45 PM
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Originally Posted by JohnDThompson View Post
All equipment has finite lifespan. The problem with carbon fiber, unlike steel, aluminum, or presumably titanium, is that it is almost impossible to recycle once its service life is done.
Accurate. However, a damaged CF frame is often repairable. Sometimes steel is, too. I'm not sure about Ti. A damaged aluminum frame is on its way to becoming a 12-pack.
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Old 01-25-23, 01:25 PM
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Originally Posted by alfaspider View Post
i fly fish and tie my own flys..one of the tools we use , is a uv cure epoxy... i was playing around with the UV light on my bake.. and i noticed on some carbon parts like my campagnolo record crankset..nothing happends.. but on some carbon parts it fluoresces.. any thoughts here?

Obviously, some of your carbon parts are crime scenes.
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Old 01-25-23, 01:41 PM
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Originally Posted by rydabent View Post
Carbon fiber bikes are just a part of the throw away society we have now. They are like most things these days, nothing is built to last.
Yawn. You need a new act.
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Old 01-25-23, 03:09 PM
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Originally Posted by JohnDThompson View Post
All equipment has finite lifespan. The problem with carbon fiber, unlike steel, aluminum, or presumably titanium, is that it is almost impossible to recycle once its service life is done.
Not exactly true. It gets recycled into landscaping projects. That hill on the outskirts of town that is going to be some wealthy man's estate in a future century ...

I went to an event at a country club built on a hill in my home town that didn't exist when I was growing up.
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Old 01-25-23, 09:22 PM
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Originally Posted by 79pmooney View Post
Not exactly true. It gets recycled into landscaping projects. That hill on the outskirts of town that is going to be some wealthy man's estate in a future century ...
That's not "recycling," but more like sweeping the problem under the rug. And doesn't prevent plastic resin microparticles from contaminating the environment.
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Old 01-26-23, 11:52 AM
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People need to watch the video in post #5. The truth here is that the carbon fiber probably is not affected by UV light. It is the epoxy which is a plastic that is affected. Add to the UV the problem is that all plastics get brittle with age.
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