[Spridgets] converting engine size math

[Billy Zoom]

> The electrical efficiency <http://en.wikipedia.org/wiki/Electrical_efficiency>
> of an electronic amplifier <http://en.wikipedia.org/wiki/Electronic_amplifier>
> is the ratio of mean output power to mean input power.
We were discussing output power, not efficiency. You can't calculate the
efficiency of my amp without knowing the displacement.
Also, Wikipedia is written by insomniacs who know very little aside from the
fact that they can't sleep and they're bored.
BZ