A cast wheel having an alloy substrate includes a primary surface and a secondary surface. A first polymeric coating is applied to the primary surface and to the secondary surface sealing the cast alloy wheel within the first polymeric coating. An intermediate polymeric coating is applied over the first polymeric coating. The intermediate polymeric coating is coated with metal using physical vapor deposition with the metal being aesthetically distinguishable from the first polymeric coating. A third polymeric coating is applied over the metal. The third polymeric coating, the intermediate coating and the metal from the primary surface of the cast alloy wheel are removed aesthetically distinguishing the primary surface from the secondary surface. A fourth polymeric coating is applied over the primary surface and the secondary surface.

A cast wheel having an alloy substrate includes a primary surface and a secondary surface. A first polymeric coating is applied to the primary surface and to the secondary surface sealing the cast alloy wheel within the first polymeric coating. An intermediate polymeric coating is applied over the first polymeric coating. The intermediate polymeric coating is coated with metal using physical vapor deposition with the metal being aesthetically distinguishable from the first polymeric coating. A third polymeric coating is applied over the metal. The third polymeric coating, the intermediate coating and the metal from the primary surface of the cast alloy wheel are removed aesthetically distinguishing the primary surface from the secondary surface. A fourth polymeric coating is applied over the primary surface and the secondary surface.

Wheels for use on vehicles and methods of manufacturing vehicle wheels are described in the present disclosure. According to one embodiment, a method includes a step of manufacturing a wheel that includes a rim, a center disk, and a plurality of spokes. The rim may include a substantially-cylindrical barrel adapted to seal a tubeless tire. The center disk may include a central bore adapted for engagement with an axle of a vehicle. Also, the plurality of spokes may be adapted to connect the center disk to the rim. The method further includes the step of deforming outwardly-facing surfaces of the spokes using one or more hammering or punching instruments.

A bicycle gear having a first coating layer obtained by a plasma electrolytic oxidation treatment and a second coating layer, overlapped on the first coating layer, that is a lubricating substance, preferably a fluoropolymer.

Customizable methods of protecting select regions of a light metal or alloy workpiece, such as a wheel (10), from corrosion are provided. The light metal or alloy may be magnesium, aluminum, or titanium. A first region (50) of the exposed surface (40) is identified that has increased exposure to corrosive agents in an external environment (in service conditions) as compared to a second region (52). Thus, a corrosion resistant coating is selectively formed over the first region (50) of the exposed surface (40). The second region (52) may have a second distinct corrosion resistant coating. Methods for selectively and efficiently forming such corrosion resistant systems are provided. In certain methods, the locations where the corrosion resistant coating is applied are controlled by immersing only select portions of or selectively masking the workpiece in a micro-arc oxidation electrolyte bath. In other methods, the thicknesses of the coatings are locally tailored by controlling the electric field.

A cast wheel having an alloy substrate includes a primary surface and a secondary surface. A first polymeric coating is applied to the primary surface and to the secondary surface sealing the cast alloy wheel within the first polymeric coating. An intermediate polymeric coating is applied over the first polymeric coating. The intermediate polymeric coating is coated with metal using physical vapor deposition with the metal being aesthetically distinguishable from the first polymeric coating. A third polymeric coating is applied over the metal. The third polymeric coating, the intermediate coating and the metal from the primary surface of the cast alloy wheel are removed aesthetically distinguishing the primary surface from the secondary surface. A fourth polymeric coating is applied over the primary surface and the secondary surface.

The invention relates to a rim for a bicycle wheel comprising an annular body with sidewalls wherein at least one sidewall includes a brake track configured to cooperate with a bicycle brake pad. The brake track includes a groove that extends along a helically shaped path.

A multi-part rail wheel having a wheel tire is presented and described, having a wheel body which consists of a light alloy material and has a hub opening in which a contact surface is provided, on which an outer ring of a roller bearing is supported during use or which is connected to the outer surface of a shaft or a shaft stub during use, and having at least one resilient body which is arranged between the wheel tire and the wheel body and via which the wheel tire is resiliently supported on the wheel body. In order to achieve a good corrosion resistance, a high resistance to mechanical influence and to avoid electrical damage in the wheel bearing, it is proposed that at least the contact surface in the hub opening of the wheel body be covered with an electrically insulating oxide layer (OX) generated by electrochemical anodizing. A wheel set for a rail vehicle, having such rail wheels, is also presented and described.