Originally Posted by godspiral
the revo power will be too loud
Electric motors I've heard are quiet enough though. I think the tech to make them 5-7lbs and self regenerating is here. To be more generally useful, the motors need to contribute power at any speed rather than just hit a max RPM level.
RevoPower is posting 65 dBa as the noise level. That’s very low! People typically produce 60 dBa talking normally at 3 feet.
http://en.wikipedia.org/wiki/Sound_pressure