Most torque converters have a stall speed around 2000 - 2500 RPM. Which also happens to be the RPM range that your vehicle normally runs at cruising speed. At a lower speed you would be simply running a viscous coupling between the engine and transmission.
Then, thereâs the obvious choice: A dynamo attached to one of the bike wheels. (These devices in general are called generators, but when attached to a bike, a generator is traditionally referred to as a dynamo.
An electric bicycle, also known as an e-bike or booster bike, is a bicycle with an integrated electric motor which can be used for propulsion. With pedal-assist the electric motor is regulated by pedalling. 2  The pedal-assist augments the efforts of the rider when they are pedalling. 3  These e-bikes â called pedelecs â have a sensor to detect the pedalling speed, the pedalling force, or both.