good morning blue, the main reason the 1930's to 1973 are so desirable is they where built with cold hard drawn copper, across the street from the factory in Cleveland Lincoln used to have a draw mill. they used to get their copper in 4" square bars 40 ft. long on railroad cars. this copper was pulled through the press mills to get what ever size copper bar or wire they wanted, there was never heat applied to that copper. the generators and armatures they built with these windings would carry (transfer) a lot more current flow than the recylcled windings of today. welding with the older copper wound machines your moving a lot more metal into the puddle, the puddle freezes faster, you will hear the term a liquidy puddle being used with the new machines (VERY frustrating to weld with) with the old copper wounds where you point that rod is where the metals going, not trying to run down the pipe ahead of you and all over the ground.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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