The aluminum rod used for forging wheels is made of 6061, and the aluminum used for general casting wheels is far superior in terms of material, strength, ductility, and durability. Cut the aluminum rod to the size you need to make the hub.

Making profile: aluminum rods are put into the machine, and profiles of various sizes are formed through various sizes of aluminum ring molds.

Do you know why you need to adjust or repair ,even replace the valves after a certain amount of kilometers riding? It is owing to how the valves work!It is very easy to explain how the valves work theoretically: the cam pushes the valves down into the cylinder against the spring,so gases can flow in