SENSOR APPARATUS FOR A BICYCLE HUB

A bicycle hub apparatus comprises an axle; a hub member supported for rotation around the hub axle; a sensor shaft ( 28, 420) supported for rotation around the hub axle and having a first portion and a second portion. The first portion of the sensor shaft ( 28, 420) is structured to receive an external rotational driving force, and the second portion of the sensor shaft is coupled to the hub member for communicating the rotational driving force to the hub member. The bicycle hub comprises a force sensor (30) unit disposed on the sensor shaft; and a dynamo (34) disposed within the hub member, wherein the dynamo (34) receives rotational driving force from at least one of the sensor shaft ( 28, 420) or the hub member.