> Therefore, I set up a crude dynamometer. An alternator and electric
> motor were connected with pulleys and a v-belt. I measured power in and
> power out and had performance curves for the motor, and so could
> calculate alternator (and v-belt) efficiencies. It was a crude setup and
> only one unit was tested, but it was pretty clear that a 12v 60amp
> Delcotron alternator was only about 60% efficient at full load.
Does that include the efficiency of the V-belt or did you guesstimate the
v-belt efficiency?
