You have a better handle on the torque/RPM/HP relationship than most. The Farmall H in my post below had 2 useful field gears, 1st and 2nd because the engine had to run almost 2X the OEM engibe to produce the required HP. Gear selection would have benefited from a 2X reduction in front of the H transmission. The Chevy 2 engine was much more durable than we ever expected. We kept pushing the envelope until we could pull the same equipment at the same speed as our SMTA which dynoed at 61HP. Near the end of it's field work days we were running it at 3500 RPM under load and at night the entire exhaust manifold was cherry red. That tractor made fools out of the won't pull a plow because that takes torque crowd who will never figure out that flywheel torque does nothing but register on a dyno, rim torque is what pulls a plow.
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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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