Captains Cat":3l4yhzsw said:
Joe, interesting old thread. What does the prop on the electric motor do when you're running fast with the main? Does it run backwards?
Does it act as a generator in that mode if it does? 8)
Charlie
Charlie-
When running fast and the boat is planning, the trolling motor body and prop are out of the water because they are so far above the anti-ventilation plate.
I've never checked it out with a meter, but when the boat is in displacement mode and the electric trolling motor is turning, it should work as a DC generator because it is a PM (Permanent Magnet) motor, so doesn't need current to the field windings (which are magnets in this case).
However, to generate a significant current in terms of amperage, I think one would have to put a load on the output (formerly input) wires to make it do work (in electrical terms).
Like so many things in the electrical/mechanical area of physics, most everything is reversible, so the motor becomes a generator, and the generator can become a motor (at least in the simplest forms).
That's my story and I'm stickin' to it. :smiled
(You knew the answer all the time, didn't you, you old Electrical Engineer, you!)
Retired Physics Teacher Joe. :lol: :thup