Driver for applying a multi-gear pinion assembly for a bicycle gearing system with small pinions

摘要

The driver (16) has external teeth for coupled with a sprocket assembly (12) in a torque-transmitting manner. An outer circumferential surface designed as a mating surface is provided for positioning the sprocket assembly in a radial direction. An external thread structure (22) ends into a shoulder (24), where an adapter (26) for axially fixing the sprocket assembly is screwed into the thread structure. A transmitting area (18) transmits torque to a hub arrangement of a rear wheel axle of a bicycle, and the thread structure extends between the external teeth and the circumferential surface. An independent claim is also included for a rear wheel-axle arrangement for a bicycle.