A damper assembly for a bicycle wheel assembly may include a first damper configured to be disposed about a hub assembly of the bicycle wheel assembly. The first damper is configured to apply a first damping force against a spoke segment of at least one spoke of a plurality of spokes of the bicycle wheel assembly. The spoke segment is spaced apart from a spoke attachment member.

A brake drum system (100) for a wheel of a vehicle, comprising a brake drum (110) rotatable with the wheel, the brake drum having an inner surface (124) adapted to receive a friction-generating lining when a driver applies the brakes of the vehicle; a wheel end hub (112) adapted to be located radially between a drive axle of the vehicle and the brake drum (110); and a substantially circular spring element (102) for concentrically aligning the brake drum (110) with the wheel end hub (112), the spring element being adapted to be clamped between the brake drum and the wheel end hub for providing a radially directed spring force, wherein the spring element has an outer surface adapted to be pressed against the brake drum and an inner surface adapted to be pressed against the wheel end hub.

The present disclosure relates to a wheel hub unit of a motor vehicle and to a method for producing such a wheel hub unit. The wheel hub unit includes a wheel hub and a contact flange firmly connected to the wheel hub. The contact flange includes a plurality of fastening elements for fastening a wheel rim, as well as a contact surface which is intended to come into mechanical contact, at least in part, with a brake hat of a brake disk when the brake disk is in the mounted state. At least part of the contact surface is provided with a thermally insulating coating. Alternatively, the entire contact surface is provided with the thermally insulating coating.

An attachment structure is a structure that attaches an annular brake disk to an attachment object member that is a wheel or a disk body of a railway vehicle. The attachment structure includes a fastening member and an elastic member. The elastic member is disposed between a nut of the fastening member and the brake disk. The elastic member has a member body having a tubular shape, and a flange. The flange is connected to an end part on the nut side among two end parts of the member body. The flange protrudes outward from the member body and contacts an outer peripheral portion of the nut.

A disc brake disc with a parking brake cylindrical surface for cooperating with shoes of a parking brake comprises a braking band comprising opposite braking surfaces and a geometric connection portion of band connecting the braking band to a bell; the bell comprising a connection plate with a wheel hub and an annular geometric connection portion of bell for geometric connection of the bell to the geometric connection portion of band; the braking band and the bell being pieces separate from each other and geometrically coupled to each other by geometric connection portions of band and bell so as to transfer a braking action by a brake caliper on the opposite braking surfaces from the braking band to the bell and to the wheel hub; the bell comprising a geometric bell connection surface opposite to said braking band. The disc brake disc further comprises a parking ring comprising radially and internally an inner portion of ring, and radially and externally a geometric ring connection portion.

Brake rotors for bicycles are described herein. An example brake rotor for a bicycle includes a carrier to be coupled to a hub of the bicycle. The brake rotor also includes a brake track having braking surfaces to be engaged by brake pads. The brake track is disposed radially outward of the carrier. The brake track has a first thickness and the carrier has a second thickness greater than the first thickness. The brake track is coupled to the carrier such that the brake track is axially movable relative to the carrier while being radially and circumferentially constrained relative to the carrier.

A rotation transmission disc includes: an outer circumferential portion on which a load acts when rotation is transmitted; a center opening portion formed inside the outer circumferential portion; and a plurality of attachment holes for attachment of the rotation transmission disc 1 to a rotating element. A first crosspiece portions are formed in each of ranges of divided angles formed by two adjacent attachment holes with respect to a center of the rotation transmission disc. The first crosspiece portion extends from a load point, which is an intersection between a straight line extending in a radial direction to internally divide the divided angles at a predetermined angular ratio and a load radius position of the outer circumferential portion, to one of the attachment holes forming the divided angles. The second crosspiece portion extends from the load point to the other attachment hole of the attachment holes forming the divided angles.

A wheel for a vehicle, in particular a motorcycle or a motor scooter includes a hub region which has at least some portions made of a fiber-reinforced plastic material. The hub region includes a recess in which an insert for connecting the wheel to a vehicle axle is placed. An isolation element which galvanically isolates the insert from the hub region is arranged between the hub region and the insert.

A brake rotor for a braking system of a motor vehicle is provided. The brake rotor includes a disc section for rotating about a longitudinal axis and engaging a brake pad assembly. The brake rotor further includes a hat section for attaching to a wheel. The hat section has a stepped surface spaced from the disc section along the longitudinal axis, and the stepped surface defines a recess for spacing the wheel and a portion of the stepped surface from one another when the wheel is attached to the hat section.

A brake assembly includes a wheel hub having a radially-outer diameter and a plurality of splines that are spaced apart around the radially-outer diameter. A brake disc is mounted on the wheel hub and has a radially-inner diameter and a plurality of pockets that are spaced apart around the radially-inner diameter. The pockets receive the splines such that the brake disc rotates with the wheel hub. Each pocket has opposing axially-extending side walls. Each side wall has an outwardly-chamfered outboard end and an inboard locking recess. A plurality of spacers are radially disposed between the splines and pockets. Each spacer has opposing arms connected together by a brace. Each arm has an outwardly-chamfered end and outwardly-projecting locking foot which together mate with the outwardly chamfered outboard end and inboard locking recess, respectively, so as to lock the spacer in the pocket.