Quote:
Originally Posted by RobertSmalls
But it's 200A to START a cold engine, not to keep a hot engine spinning at 500RPM. Maybe a better place to start with this math would be to measure engine braking on flat land in low gear, or to consider your gph in neutral at 2000 RPM.
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Don't forget that a starter is a high-torque low-efficiency device as well; most of that 200 amps goes to heat, which is why you burn up the starter if you run it for more than a couple of minutes at a time.