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 alternator or synchronous generator is a machine where the frequency of voltages induced, currents produced maintains the constant relation ship with the synchronous speed.â¦. 5 people found this useful. Baldfatguy.lternator use ac voltage to recharge battery and will charge battery at vehicle idle. Much faster and more efficient than the generator. It is not unusual for an alternator to last the life of a vehicle where a generator would require a rebuild or replacement during the life of vehicle.