BICYCLE DERAILLEUR SYSTEM

摘要

A bicycle derailleur assembly that is mounted concentrically with an axle of a rear wheel assembly. The derailleur is constructed to be mounted to the bicycle such that the derailleur is pivotable about a common axis with the rear wheel and such that the rear wheel can be removed from the bicycle without interfering with the connection of the derailleur to the bicycle. The derailleur system provides a derailleur that is robust and reduces interference of the derailleur with the performance of bicycle maintenance.