Well, if it goes back to magnetos, I did find out why IHC was a stickler for the horseshoe magnet to have the IHC logo on the serial number side.
It was all due to the flow of current and which direction the spark would arc to on the points. IHC did that as a design point to have the stationary contact burn out faster. It was the cheaper one, so they minimized the farmer's cost. The stationary point is also easier to replace.
Reason I know that is because I have an original IHC mag book, and it explicitely calls that out. So, when they went to battery ignition, I wonder if that was the same reasoning.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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