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 - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
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