Remember, today's tractors are also turning more hydraulic pumps for the powershift, bigger pumps for the hydraulics, with more parasitic losses at the motor end for AC and the alternator due to higher electrical loads. The new MX Magnums are actually comparable to the 89 series Magnums they replaced, but you can't really compare the drivetrain power losses in them to the older tractors because of the powershift vs gear transmissions, and the hydraulic capacities and such.
I have no idea what the flywheel power on something like an SM or 1066 would be. Did they even bother to advertise that back in the day?
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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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