The three ramps refer to speed “ramps”. These always begin with the starting speed, increase slowly and end at the top speed.
The Speed Bull actively accelerates to the desired starting speed. The driver does NOT kick.
The Speed-Bull accelerates slowly up to the desired maximum speed and measures the required power, hereinafter referred to as power loss.
At the initial speed, the rider begins to pedal with normal power, hereinafter referred to as pedaling power. Since the Speed Bull knows the power loss at every speed, the difference must be the pedaling power of the rider. Once the maximum speed has been reached, the Speed Bull knows the average pedaling power of the driver, brakes automatically and starts with the
The measurement begins as with the second run. The driver pedal with the same level of power, but activates the support of the e-bike. Since the Speed-Bull knows the power loss of the bike, as well as the pedaling power of the rider, the difference is the vehicle power.
Sounds complicated, but it’s very simple …
The more precisely the driver can repeat his pedaling performance, the more precise the measurements of the vehicle performance will be.
A somewhat experienced rider can easily limit his pedaling power with an accuracy of +/- 20 watts. The error is then relatively small compared to the vehicle output of 250-800 watts.
The total time required for a measurement is between 40-80 seconds. The duration depends on how large the speed range to be run through is.
But how do you calculate the top speed? Here are the basics.