A shaped preform component (200A) for a spoke portion (108A) of a composite wheel (100), the shaped preform (200A) comprising: an elongate body (215) configured to be located in a spoke (108) of a composite wheel (100), wherein the shaped preform component (200A) is formed from a cured composite fibre material having a compressibility of <2% volumetric under moulding conditions of 50 bar hydrostatic pressure and a temperature of 60 to 150 C., and wherein the density of the cured composite fibre material is selected to form a counterbalance mass for a mass addition (300) to the composite wheel (100).

Embodiments of the present invention include non-pneumatic tires (100) having an electrically conductive path, and methods for forming the same. It is appreciated electrical charges may be generated during land vehicle operation and land vehicles are often grounded by providing an electrically conductive path between the vehicle and the ground. In embodiments of the present invention, a non-pneumatic tire (100) and a method for forming a non-pneumatic tire are described for providing an electrically conductive path between the vehicle and the ground at the non-pneumatic tire. The method for forming the non-pneumatic tire comprises the step of applying a mold release (290) to one or more molding surfaces (280) of the spoke mold wherein the mold release (290) includes an electrically conductive additive.

In a method for manufacturing a spoke unit, the continuous fiber reinforced plastic is led from a middle supporting portion to a first supporting portion along the front surface of the mandrel. Subsequently, the continuous fiber reinforced plastic is led from the first supporting portion to the middle supporting portion along the back surface of the mandrel. Subsequently, the continuous fiber reinforced plastic is led from the middle supporting portion to a second supporting portion along the front surface of the mandrel. Subsequently, the continuous fiber reinforced plastic is led from the second supporting portion to the middle supporting portion along the back surface of the mandrel.

A rim assembly for a bicycle wheel, comprising a rim having generally opposing first and second wall sections configured for mounting a bicycle tire, each of said first and second wall sections comprising an outwardly facing recess and; a rim component located in each recess, wherein each rim component has a lower density than the rim, wherein the rim components do not form part of a braking section of the bicycle wheel.

The present disclosure discloses a carbon fiber bicycle rim and a manufacturing method thereof. The carbon fiber bicycle rim comprises a ring-shaped rim body, which is integrally formed from carbon fiber. The rim body comprises an outer ring wall, an inner ring wall, and two side walls that connect the outer ring wall with the inner ring wall. The outer ring wall has an outer side that forms a semi-closed tire groove and an inner side that encloses together with the inner ring wall and the side walls to form a closed cavity. Connecting portions are arranged in the cavity. The connecting portions have one end that is connected to the outer ring wall and the other end that is connected to the side walls. The connecting portions enclose together with the outer ring wall and the side walls to form hollow channels.