I thought the legal limit was 250 Watts in many of countries worldwide?
Well, yes and no. The legal limit refers to the continuous power output, whereas the figures above are for absolute maximum power. Most motors can give maximum output for a minute or two, but they’d melt if asked to do it all day – just like a cyclist. Obviously, maximum power is more useful than continuous power as a guide to the way a bicycle will climb a hill. Look at the spec of bikes on sale and you may see 200 watts, 250 watts or (illegally) 400 watts. These figures are only a rough guide to the true maximum power output.
