This year, the power transmission is done by gears instead of a chain. The transmission of the DUT11 is responsible for the transmission of the power from the electric motor to the drive shaft. From the drive shaft the power is transmitted via the wheels on the road. The main reason to choose for gears instead of a chain, is the large transmission ratio (1:7,2). This large transmission ratio is needed for the electric motors who will operate in a high RPM range (max. 10.000 RPM). A chain can’t transmit power at this high ratio in one step; a double step chain transmission would take too much space.

Because the development of a set of gears is very complex, we contacted a company that is specialized in this field: Drenth Motorsport Gearboxes. This company is has a lot of experience in the field of developing custom made gearboxes. Drenth Motorsport Gearboxes helped us by sharing their expertise and gave us very helpful advises during the design period. Eventually a perfect set of gears was designed that suits the behaviour of the electric motors.

The production of gears is a very specialized process. Therefore, Drenth Motorsport Gearboxes have produced our gears in their factory. The gears for the DUT11 are produced from a special kind of steel: a kind of steel that can operate in the most extreme conditions, and can handle various shock loads. At this moment the gears arrived in our workshop. They are now ready for further processing. After that, they can be assembled in our car. It won’t take much longer before the gears will drive the DUT11. We would like to thank Drenth Motorsport Gearboxes for all their shared expertise, and mostly for producing the gears!