Tom 43 said: (quoted from post at 15:19:33 12/08/08) Dear JMOR and others,
Many years ago I checked the amp draw of a 12 volt system on an engine mounted on an engine stand with a Sun VAT-40. The draw was 185 amps. Then I substituted a 6 volt battery and the draw was 320 amps, with the engine turning more slowly. The same phenomenon will occur with a weak but not too weak battery. As the starter approaches stall, current flow rises as voltage drops up to a point. This apparent violation of OHM'S law is due to the fact that the starter is both a starter and a generator and when spinning rapidly produces a counter voltage reducing current flow. However, if we were to conduct this experiment with a locked engine, we would have a resistive rather than inductive load and OHM'S Law would be obeyed.
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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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