Carbon fiber rotors

I may have to try some of these, but I am curious if anyone knows where to buy the tool they are using to hold the carbon and cut it? I would love to have one of those.

http://vimeo.com/61736310

I’ve seen these… I wonder how these things are in use? When they fail, is it catastrophic? The place I used to work at made carbon rotors, but they make them from carbon carbon for jets, race cars, and the like. I feel like just a layup of regular carbon woven fabric wouldn’t dissipate the heat well and would develop delamination or some other issues over time.

Has anyone worked with these?

That cutter is cool btw :wink: looks like they just made it from some aluminum.

I have yet to see them in the real world, but I just spammed the editors at Pinkbike to see if they can pick up a story on the company and real world tests. They reall do not save much weight, 169g vs 97g @ 203mm, it is rotational weight though. I am more interested in how well they stop, how well they deal with mud and how long their very high priced ($40 pair) brake pads last.

I would like to see a machine test spinning the rotor while throwing mud and water on the disc. I know first hand, riding DH in the rain will destroy your pads and take material off the rotors pretty quick.

And yes, that cutter is awesome! I have a feeling it is a one-off machine though.

I agree, seeing one of those rotors working to it’s death in a real world type situation would be necessary before I’d try it in RL. I’m sure it would be entertaining to see it at the least. And maybe we’d be surprised at how they hold up? I wonder what resin system they’re using?

and if you think $40 would be pricey, just think of how much the carbon carbon version would cost… :eek:

And that cutter seems fairly straight forward. Looks like a mc master carr creation. Definitely useful.

$40 is just for a pair of pads, compared to the normal $15 pair of pads I run for my Hope brakes. Rotors are $100 or so. Everything is pretty much double the cost of a normal very high-end setup, so seeing them put to a failure test is of interest, like you said. I am also curious how they fail. Obviously, with a steel setup, you will destroy the rotor if it is metal on metal, but it will still stop.

Here is my friends race car discs…

I should add i use to run a Carbon twin plate clutch in my old car was good the more you thrashed it the hotter the carbon got the better it worked. i would like to know how much better these work vs cost/replacement

Those are probably carbon carbon… it grips more as you heat it. This is the same tech as used on jets and the space shuttle as well as race cars.

Carbon carbon is much more expensive to produce, as you have to carbonize the precursor.

The bike disks rotors are just a pressed laminate. Not the same… This is why it concerns me with the bike rotors.

found this paper…

http://www.ias.ac.in/sadhana/Pdf2003Apr/Pe1069.pdf