And to put the power value of 800 Watt in relation: An average human is unlikely to go with more than 150 Watt over a sustained period. If you put this into this web computer:
you get a speed of 27 km/h for a road bike. If you put 800 Watt in for such a bike, you get a speed of 49 km/h (which in Germany is the general inside-village speed limit which is anachronistically high, and is slowly being replaced by 30 km/h where you have bicycles, pedestrisns, or schools).
That also means that an e-bike with 800 Watt power is actually a light motorcycle, with all the associated risks.
And to put the power value of 800 Watt in relation: An average human is unlikely to go with more than 150 Watt over a sustained period. If you put this into this web computer:
http://kreuzotter.de/deutsch/speed.htm
http://kreuzotter.de/english/espeed.htm
you get a speed of 27 km/h for a road bike. If you put 800 Watt in for such a bike, you get a speed of 49 km/h (which in Germany is the general inside-village speed limit which is anachronistically high, and is slowly being replaced by 30 km/h where you have bicycles, pedestrisns, or schools).
That also means that an e-bike with 800 Watt power is actually a light motorcycle, with all the associated risks.