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Originally Posted by gionc
One good friend of mine is a New Materials Engeegner (Trento's Univ.) and work on C.F. applications. For his degree he design and develop a machine to produce those kind: basically is like a weawing loom but work radially, so it's the way to produce CF pipes. In the factory when he work they done a lot of stuff, from fishing equipment to bike exaust to structural item, often these're sandwich of kinds materials, like stainless core under some CF, Kewlar or alu mesh layers.
Strange: in bikes exaust they use an iron mesh under CF to allow rivets applications (terminals) it's weight is at least is similar than an alu exaust, the look not obviously
Definitively those color seem a protection stuff over carbon
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I know how they produce C/F tubes and the like, I am referring to how the place enough strength in the tube to withstand the radial moments experienced under accelerations, perhaps they use a honeycomb inside the shaft similar to what Trek does with its frames.