My Farmall M has no resistor inline. Round can coil that says right on the coil 12 Volt no external resistor needed.
My 8N's had a factory ballast resistor that after it starts and run get warm and resistance increases. Neither has a dedicated bypass on the ignition circuit. Cars were generally a little more complicated than a tractor. Little things like bodies, doors windows, heaters, wipers and radios made them completely different.
Actually they were at one time designed to start with a crank. Then some fool (hero in my book) figured out how to start an engine with an electric motor and a storage battery. But by the mid 40's on they were designed to start with a starter but they did provide a crank as a backup.
I've kick started motor cycles and hand crank started a few tractors. It was an overrated experience! :lol: :lol:
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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