The electric motor's speed is reduced from tens of thousands of RPM down to wheel speeds by two separate planetary gearsets on either end of the casing. This allows the motor and gearboxes to be ...
The two-speed box was eventually dropped in favor of what has been called "powertrain 1.5", which uses a single-speed gearbox and other improvements to the electric motor and inverter to achieve ...
The gearbox is, of course, the main thing that prompted all of these changes in the first place. The idea of a two-speed gearbox has been abandoned in favor of a single speed constant mesh unit.
Look to the lengthy photo captions for greater detail. AMG has mounted an electric motor at the rear with its own 2-speed gearbox. As speeds climb, the ... [+] motor’s gearbox will kick it up a ...