A bicycle electrical control apparatus comprises a first control unit (30) that provides first electrical signals; a second control unit that provides second electrical signals; and an electrical connecting cord (65,66,68) having a first end coupled to the...

A motor-drive hub for a bicycle includes a hub shaft (61), a hub body (100) rotatably mounted about the hub shaft, a drive member (72) coaxially mounted with the hub shaft, a motor (70) coupled to the drive member for rotating the drive member, and a one-w...

The invention provides a motor-driven bicycle including an automatic gear shifter, which is capable of improving a shift feeling upon gear-shift and controlling a self-running power of a drive motor determined on the basis of an amount of a self-running op...

The invention provides a motor-driven bicycle including an automatic gear shifter, which is capable of improving shift feeling upon gear-shift. Upon shift-up from the "second speed" to the "third speed", since an output torque at the "third speed" is large...