Bicycle control apparatus that sets a bicycle transmission to a predetermined gear ratio

摘要

A control apparatus for an electrically operated bicycle transmission (10) comprises a power supply sensor (27) and a control unit (25) operatively coupled to the power supply sensor (27). The power supply sensor senses a power characteristic of a power supply (32), and the control unit (25) provides a signal to operate the bicycle transmission (10) when the power characteristic falls below a predetermined value. Alternatively, the control apparatus comprises a running condition time sensor and a control unit (25) operatively coupled to the running condition time sensor. The running condition time sensor senses a time interval of a running condition of a bicycle, and the control unit (25) provides a signal to operate the bicycle transmission (10) to a predetermined gear ratio when the time interval of the running condition passes a selected value.