Abstract: According to the present invention, a carbon bodied bicycle rim with ceramic brake portion comprises a carbon bodied bicycle rim and a protective film thermal sprayed on the carbon bodied bicycle. The carbon bodied bicycle rim includes two brake portion respectively formed on two sides thereof. Each brake portion has an outer surface. The protective film is thermal sprayed on the outer surface of the brake portion, by which the brake portion has a characteristic of wear-resisting and thermal dissipation. The protective film includes an aluminum layer thermal sprayed on the brake portion and a ceramic layer thermal sprayed on the aluminum layer.

Abstract: A composite carbon fiber wheel rim of a tubular type comprises a friction-resisting rim body having an inner and outer circumferential periphery, and an inner rim body being disposed along the inner circumferential periphery of the friction-resisting rim body. A method for making such a wheel rim comprises forming a friction-resisting rim body, mounting inner rim body to the friction-resisting rim body, and making the friction-resisting rim body and the inner rim bodies as an integral piece. A composite carbon fiber wheel rim of a clincher type further comprises an outer rim disposed along the outer circumferential periphery. Accordingly, the outer rim is mounted to the friction-resisting rim body while mounting the inner rim.

Abstract: A method of manufacture of forming a composite carbon fiber bicycle crank includes providing a hollow carbon fiber body, with the body including a first opening at one end and the second opening at the other end, mounting a first connecting member and a second connecting member in the first opening and the second opening of the body respectively, wrapping carbon fiber yarn made up of carbon yarn around the assembly of the body and the first and second connecting members, wrapping carbon fiber polymer, and performing hot embossing.

Abstract: A bicycle wheel includes a rim having three or four spokes. A hub with a bearing is disposed at the center of said wheel. An annular recess is formed on an outer peripheral surface of rim for receiving a tire. A compartment is formed within each spoke for containing foam material and an annular chamber is formed within the rim of the wheel.The steps of manufacturing the bicycle wheel comprising:preparing a mold having a compartment configured according to the bicycle wheel, the mold including an upper mold and a lower mold;laminating composite material prepreg;applying foam material and solvent material respectively within spoke part and rim part of the composite material prepreg;disposing the composite material prepreg into the compartment of the mold;covering and inserting said mold into a heating appliance and heating;removing and cooling the mold;releasing the wheel and drilling a hole to the rim of the wheel for releasing the gas within the rim.