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Frequently Asked Questions
Manufacturers often measure directly at the motor shaft in the lab under their own conditions. These do not always match ours. This doesn't mean manufacturer specs are wrong, but that they were measured under different conditions. Comparability under identical conditions is more important to us than the absolute number.
When a motor gets too hot, the software automatically reduces power to prevent damage. This is called 'derating'. In our thermal charts, you can see this as a sharp drop in the curve after a few minutes.
130 Watts represents a sporty but relaxed riding style. At this input level, the motor's natural characteristics are most visible. If we measured at maximum power, we wouldn't represent an everyday situation, and many motors would hit their limiters, making interpretation difficult.
We rely on test bikes that we can borrow or organize. As soon as we have access to a new motor (or a bike with one), we will test it. Feel free to send us a suggestion!
This is usually due to dropping battery voltage. A full battery delivers more voltage than a half-full one. A gradual loss of 2-5% over 20 minutes is normal and not a thermal issue.
Yes, absolutely! We want our data to be shared. We publish our charts under the 'Creative Commons' license (CC BY-ND 4.0). This means: You are free to use and distribute the images as long as the watermark remains visible and 'E-Bike Lab' is credited or linked as the source. Altering the data curves is not permitted.
In principle, this is possible without problems. For the moment, we are concentrating on full-power mid-drive motors, as they have the largest market share and most manufacturers are active in this segment.