How many watt's ?

[Sammus]

maybe, maybe not. All the good .21 nitro engines seem to be putting out 2hp or more, which is about 1500W. So you looking at less power. But the power curves are very different (nitro motor is very peaky, electric motor is very flat, so you have the power available over a much greater rpm range), not to mention that an electric motor has much more torque from 0rpm. They're just two different beasts - power isnt the only thing you have to look at.