[chabons]

"rather hard" is really underselling things. Without considering generator->motor losses, 250W is a lot of power, even for a larger (>80kg/176lbs) rider. For basically anyone who doesn't train on the bike, this is an unsustainable effort.

Even a floor of 100W would rule out smaller/less athletic riders.

[esseph]

176lb is below the average male weight in the US by around 25lbs :(