On Apr 23, 10:38 pm, "marcus" wrote:
Thanks to everyone who's contributed ideas to this thread.

It's my understanding of alternator operation that the voltage is
"built-in" by the number of poles, the number of turns on the rotor/stator,
and least of all by the regulator.
The speed controls current, not voltage.

No, this is not correct. The open circuit voltage is given by the
rate of change in magnetic field the stator sees. This means that it
varies with the RPM.