A hub is provided for a human-powered vehicle, and includes a hub axle, a rotating body, a bearing, an inner retainer and an outer retainer. The rotating body is rotatably mounted on the hub axle. The bearing rotatably coupling the rotating body to the hub axle. The bearing includes an inner race, an outer race and a plurality of roller elements. The inner race has an axially facing portion abutting an inner abutment of the hub axle. The outer race has an axially facing portion abutting an outer abutment of the rotating body. The roller elements are disposed between the inner race and the outer race. The inner retainer is coupled to the hub axle and abuts an axially facing portion of the inner race. The outer retainer is coupled to the rotating body and abuts an axially facing portion of the outer race.

A composite bicycle rim, and a process for manufacturing the rim, having a plurality of perforated spoke-attachment seats having spaced apart first and second areas of cut structural fibers. The second area has both end portions of cut structural fibers having a longitudinal dimension greater than the first area's cut structural fibers and continuous structural fibers. At least some of the end portions of the second area's cut structural fibers are mutually juxtaposed or interposed with respect to the second area's continuous structural fibers.

A collision testing vehicle is disclosed which can be utilized to perform testing with a driver assistance system. The collision testing vehicle includes a vehicle having a vehicle body. The vehicle is structured to be subject to an impact force during a collision with a collision body. A wheel is coupled to the vehicle body, and the wheel includes a detachable support that is configured to non-destructively detach from the wheel when subjected to the impact force.

A bicycle wheel rim made at least partially of a stratified composite material comprising structural fibers incorporated in a polymeric matrix. At least one opening, which passes through at least one first layer of composite material, is provided and at least one spoke attachment hole, which passes through at least one second layer of composite material, is also provided. The spoke attachment hole is completely contained within the opening in the first layer. A related manufacturing process is also described.

A wheel comprising a non-pneumatic tire for a vehicle, such as a vehicle that is steerable and/or otherwise movable by leaning the vehicle (e.g., a bicycle, a motorcycle or another two-wheeled vehicle), in which the non-pneumatic tire may be designed to enhance its use and performance, including, for example, to avoid sudden failure, improve steering and/or other movement of the vehicle (e.g., when the vehicle is leaned and the non-pneumatic tire is cambered), improve ride comfort, and/or exhibit less rolling resistance.

A hub and spoke assembly includes a hub body having a first end and a second end. Projections are on each end. The projections are spaced apart from each adjacent projection about a rotational axis of the hub. Each projection comprises a base portion joined to the hub body and a support extending from the base portion to a free end. A plurality of spokes is provided. Each spoke comprises an elongated braided fiber having a loop at a first end and a second end configured for attachment to a rim. At least one spoke is joined to each support of each projection.

A composite material body (10) includes a first material layer (20) and a second material layer (30) overlapping the first material layer (20). The first material layer (20) and the second material layer (30) are wound to form a flexible and circular rod. Impact absorption is effectively improved and impact resisting strength is enhanced because energy-absorber or damping material or its composition is attached into the composite material body (10). Technical characteristics, effects and objects of this invention are achieved thereby.

A bicycle rim is made with a plurality of layered, each of which is formed of structural fibres incorporated in a polymeric material. The rim has a radially outer peripheral channel with an upper bridge extending between the wings for holding a tyre. The peripheral channel comprises an inner layered structure, extending between wings and at least one wrapping layered structure, wound on the inner layered structure at least at the end of the wings, the inner layered structure and the wrapping layered structure being included in the plurality of layered structures.

A bicycle wheel rim, comprising a wall made of composite material having a plurality of perforated spoke-attachment seats, wherein each perforated seat is delimited by at least one first area comprising an amassment of continuous structural fibers and at least one second area circumferentially spaced apart from said first area and comprising cut structural fibers. A process for manufacturing the aforementioned rim is also disclosed.

An insert for the rim of a spoked bicycle wheel that has a spoke hole. The insert has a portion configured to abut against a spoke attachment element with an enlarged head and a holding element that prevents movement of the spoke attachment along said longitudinal axis of the spoke hole.