Quote:
Originally Posted by SGSST109E
Powermaster makes a single wire alternator with and adjustable regulator. I run mine at 15volts, not enough to hurt the battery because its not running that long. If I remember correctly 750 watts equal one HP. So a 100 amp alt. at 12 volts is 1,200 watts less then two HP.
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Not disputing your math, but turn that alternator on & off the engine, sitting there running, certainly would speed up & slow down as the alternator was turned off & on.
ET slips certainly showed more than I would expect from 2 hp.