bura wrote:As we all know Carbon brake discs are used in Formula one and already in some street cars like the Porsche GT 3 and they are very heat durable. Of course these are 3cm thick carbon discs with cooling channels in between etc.
They're also not carbon fiber composite, at least not in the sense that we're familiar with, having carbon fibers in an epoxy matrix. GT3 brakes are carbon-ceramic; F1 are "carbon fiber" but the matix is some hydrocarbon and they take months to manufacture (http://www.f1technical.net/articles/2) . They're no more comparable to bicycle rims than any other object largely made from carbon, like an industrial diamond or a pencil lead. The process to make an F1 brake disc wouldn't fly for bicycle wheel manufacture unless there's a market for $40,000 sets of wheels.