Finally everything was ready to combine motor and the customized gear! First some words to the gearbox: Electric motors in general do not need a gearbox with multiple gears like ‘old fashioned’ combustion engines. But when using a fast turning machine like the hybrid syncronous motor made by Brusa, a transmission is necessary. The motor has a maximum speed of 11’000rpm and maximum torque of 220Nm (up to 4000rpm). The gear will scale down the speed and scale up the torque as we learned in physics class. Together with the gear ratio of the differential gear we can calculate the scale factor between motor speed and wheel speed. Using the original 2nd gear of the Syncro-gearbox we get a top speed of about 120km/h which is even a bit more than what you really want to drive with this car. Together with Toni from Technikschmitte we decided to keep the original 1st gear as our ‘offroad gear’.