A chain separator for separating a chain of a bicycle from a sprocket of the bicycle. The chain separator includes a body defining an outer surface and at least one projection extending from the body to define a sprocket channel. The chain is disengaged from the sprocket and positioned on the outer surface and the chain separator is positioned on the bicycle such that the sprocket is positioned within the sprocket channel.

A bracket apparatus for mounting a derailleur to a frame of a human-powered vehicle comprises a bracket body and one of a restriction member and a restriction opening. The bracket body includes a frame attachment portion configured to be attached to the frame of the human-powered vehicle and a derailleur attachment portion to which the derailleur is to be attached. The restriction member is configured to be at least partly provided in the restriction opening to restrict a rotation of the bracket body relative to the frame of the human-powered vehicle in a bracket mounting state where the bracket apparatus is mounted to the frame of the human-powered vehicle.

A bracket apparatus for mounting a derailleur to a frame of a human-powered vehicle comprises a bracket body and one of a restriction member and a restriction opening. The bracket body includes a frame attachment portion configured to be attached to the frame of the human-powered vehicle and a derailleur attachment portion to which the derailleur is to be attached. The restriction member is configured to be at least partly provided in the restriction opening to restrict a rotation of the bracket body relative to the frame of the human-powered vehicle in a bracket mounting state where the bracket apparatus is mounted to the frame of the human-powered vehicle.

Disclosed herein is a tension monitoring apparatus. The apparatus comprises a fixing with a shank which in use is under tension, a strain sensor embedded in the shank of the fixing and configured to generate a strain sensor signal corresponding to tension in the shank. The apparatus further comprises a data processing means configured to receive the strain sensor signal, process the strain sensor signal in accordance with one or more characterising parameters associated with the strain sensor and thereby generate corresponding strain sensor data indicative of a strain to which the shank is subject. Additionally, the apparatus comprises a wireless transmitter for communicating the strain sensor data to a remote receiver, wherein the data processing means and the wireless transmitter are mounted in a module fixed to an end of the fixing.

Disclosed herein is a tension monitoring apparatus. The apparatus comprises a fixing with a shank which in use is under tension, a strain sensor embedded in the shank of the fixing and configured to generate a strain sensor signal corresponding to tension in the shank. The apparatus further comprises a data processing means configured to receive the strain sensor signal, process the strain sensor signal in accordance with one or more characterising parameters associated with the strain sensor and thereby generate corresponding strain sensor data indicative of a strain to which the shank is subject. Additionally, the apparatus comprises a wireless transmitter for communicating the strain sensor data to a remote receiver, wherein the data processing means and the wireless transmitter are mounted in a module fixed to an end of the fixing.