IDbike is testing new chain and belt tensioners!
IDbikelogo4

Test Bench

The development of our unique test bench started about 10 years ago, and was originally intended to test the functionality and the durability of a bike CVT (a Continuously Variable bike Transmission). The test bench was further optimised for universal application of all types of bicycles and bicycle drive-lines. The test bench also proved to be a very useful piece of equipment for the testing of conventional and electric bikes. At the present time it is one of the most accurate instruments in Europe available to the bike industry.

The test rig is based on a roller bench, on which the test bike is mounted. The crank of the bike is driven by a servomotor (1) and the rear wheel runs on a braking wheel (2), connected to a second servomotor (3). Besides the speeds and torques of both motors and the rear wheel, the voltages and currents of the battery and the electric motor of the bike are measured simultaneously. With this information the efficiency of the bicycle can be calculated, and the amount of support and the range at different speeds can be determined.

For electric bikes the partial efficiencies of the battery, the converter, the E-motor, the transmission and the tyre can be made visible. The max. test bench specifications are:

    • Crank torque : max. 250[Nm]
    • Crank speed: max. 200 [rpm]

thumb proefstand1

Testing electric bicycles

With more and more electric bikes on the market, and the high consumer interest in these bikes, there is an increasing need for objective information about the performances of these bikes. The consumer is interested in the amount of support of the electric drive, and especially in the range of the bike. Although the average travel distance of most consumers is less than 10 kilometres, almost everyone wants to have the possibility to cycle a much larger distance.
Example of a support test

To provide objective information about the performance of electric bikes, IDbike has developed a specific test cycle, like the ECE cycle for cars. These kinds of tests are performed on a roller bench at standardised conditions, with which a good reproducibility and reliability is guaranteed. On the test bench an average bike ride of an average consumer on an E-bike is simulated, which gives a good indication of the range and support that can be expected in practice. Most important is that the bicycles can be compared with each other in an objective way, which could help the consumer to make a good choice.

 

 

Finally testing according this cycle can also be an important tool for a fast and better development of power assisted bicycles.


      LEVA-EU_Member_Logo.png
.                        interreg Vlaanderen Nederland PANTONE
 


 
 GreenEnergy

 

 
 
 
 
 
 

Copyright © 2021  IDbike