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rotorwrench · 10-12-2019, 08:43 AM

Ford changed to the positive ground system in the early days of the Model A so as to get the best efficiency from the low voltage system. The direction of electron flow was what the engineers were looking at. They were using the power house generator with a model T cut out so the whole system was a running engineering change in the first 2 years of production. Model A systems used a tiny fraction more energy than the model T and it had no magneto so they wanted it to be as efficient as possible.

10-12-2019, 08:43 AM	#12
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,426	Re: Positive Ground Ford changed to the positive ground system in the early days of the Model A so as to get the best efficiency from the low voltage system. The direction of electron flow was what the engineers were looking at. They were using the power house generator with a model T cut out so the whole system was a running engineering change in the first 2 years of production. Model A systems used a tiny fraction more energy than the model T and it had no magneto so they wanted it to be as efficient as possible. Last edited by rotorwrench; 10-12-2019 at 08:50 AM.