Propulsion or drive train system sold as an integral component of bicycles, electric bicycles, scooters, quadricycles, motorcycles and electric land vehicles comprising a series hybrid drive unit, an electric generator geartrain that converts rider pedaling input into electrical energy, a traction geartrain for converting stored electrical energy into wheel movement, an electric motor, electronic controllers and sensors, as well as embedded computer software for controlling the propulsion and shifting of electric land vehicles, and for operating electric land vehicle drive systems that adjust power output based on a rider's preferred riding experience, cadence, or road grade
Vehicles