Abstract: An electric motor bicycle system with an electric motor driven gear adapted to drive a wheel gear coupled to a bicycle hub. The motor driven gear is coupled to the wheel gear with a chain. The chain may be tensioned with one or more tensioners, which allow for a tighter system geometry. The motor may be supported with a bracket adapted to mount to industry standard disc brake mounting interfaces. In some aspects, the motor driven gear is coupled to the disc mounting interface of a wheel hub. In some aspects, the electric motor bicycle system may also have a disc brake system integrated therein.

Abstract: A regenerative braking energy dissipater system which is adapted to dissipate energy from a regenerative brake in the case when the battery cannot accept further energy. The system may switch the energy flow from the battery to a dissipater when the battery has reached a high level of charge. The dissipater may include load resistors. The system may be designed such that the airflow around the dissipater flows over and under the dissipating plate.

Abstract: An adjustable hand brake lever assembly for a proportional electric braking system for a bicycle or other vehicle. The brake lever assembly may include a sensor assembly which is adapted for use with a standard brake lever assembly as used with mechanical cable braking systems. The sensor assembly may be replaced as a unit. The sensor assembly is adapted to allow for setting the reach adjustment, allowing a user to set a preferred initial position. The adjustable brake lever assembly may be coupled to a control electronic module and a regenerative braking system on a bicycle.