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.
Ideal for a wide range of markets, this style of dynamometer churns water inside the housing and transfers energy by momentum exchange and water shear. Generally speaking, the more water flowing through the dyno, the greater the braking force exerted on the device under test.