spin it with two batteries in series, Dave?
That is what I've always done for jumping in winter or starting diesels.
And I even spun my gas dragster to life that way.
as long as the starter is turning and not stalled, the extra power won't hurt.
If it's stalled ( zero revolutions ) it WILL burn out the starter moter.


"wanna hear God laugh? Tell Him you have complete control now!"