Formula E for its Tech Tuesdays series attempts to explain the technical details inside electric racers in layman's terms; the latest video in the series concerns how the car's torque transmission works.

In the base case scenario, even with a simple electric powertrain, there is several stages between the torque from the motor and actual transferred to the wheels.

There are now several types of electric power-trains in operation, many have co-axial motors or double motors (one per wheel) as well as some in-wheel motor systems - all with advantages and disadvantages.

The common feature of electric motors however is their high and instantly available torque, and also a high efficiency over a broad range of rpms.

Several prior videos are abour power, monocoque, steering and suspension: