On Saturday, September 12th, 2020 we were at the first German e-MTB championship for the technical inspection of e-bikes in Daun. It was not about the performance test, but about checking at what speed the support switches off. Due to many inquiries, the procedure is explained here:

before the race, the vehicle is rolled down a simulated mountain on the testbench until it has reached 28 km/h. After the assistance has started, the driver begins to pedal. Then the speed is reduced until the assistance starts. As soon as this has been determined, the speed is checked and the measurement is ended. Vehicles that reached unauthorized high shutdown speeds (manipulations) were not detected.

The battery is hardly loaded due to the energy consumption of a few watt seconds and is the same for all e-bikes. During the measurement, e.g. an average of 200 W vehicle power measured over three seconds. This is 600 Wsec, which corresponds to 0.17 Wh. So if a battery has an energy of 400 Wh, 0.04% is required for this measurement.

Should a driver/vehicle finishes extremely quickly, it would be tested again more precisely after the race. Possibly even with controlling the sensors, wiring and checking the software for manipulation. However, this was not necessary in Daun.

Pictures will follow


Current pictures, videos and news can now also be viewed on Facebook. Here are pictures from our first fair in 2020



The homepage has been revised and the functioning of the Speed-Bull disclosed. The new videos are posted.

Because of the heavy workload (our other testbenches), the release of further information has been postponed until October 2019.


Due to the still ongoing patenting process, we still have to keep the technical information secret.


The new Speed Bull will be delivered at the end of July. Photos from the final version will be prepared.


Here is our universal range test for e-bikes, e-MTB's and s-pedelecs: URT


. . .

deutsch english Facebook