So are you saying the problem occurs when it is put into actual practice? But I carefully measured how much it took me to plow 2 acres with a 4020 pulling 5 bottoms. That's an actual test, but the D which I haven't bought, has not been tested.
I am assuming that a D can pull 3 bottoms in the same soil, but I might be wrong; in which case, the whole math is wrong. Hmmm..... Maybe it can pull only 2 bottoms. I better look into that one. Thanks.
Keep in mind this is engine horse power, not drawbar horsepower. Maybe, just maybe, that chain dive on the D gets its power to the gronund more efficiently than the power shift transmission on the 4020. I'm just guessing here--IF the D can pull more than half what the 4020 can pull with half the fuel cost. That's not certain.
I'm going to bring up another observation: Our 80, at 72 horsepower, is every bit the tractor the 4020 is, at 90 horsepower. That's not because the 4020's in bad shape either--it's fine. The older, low RPM engines are underrated. Take the old steam engines, for example. At the Wauseon steam convention some years ago I watched a 120 HP traction engine pull a 300+ hp bend-in-the-middle Steiger backwards, stalling it in the process. A third the horsepower out pulled AND killed the engine, both? Or take the engine that drives my shop: it's a "15" horsepower Reid. It has 750 cubic inches! It'd take a 15 HP lawn mower and throw it over a hill. There really is something to low RPM, high torque engines that will out perform high speed engines. That 80 will pull 5 bottoms at an idle. I've done it many times. The 4020 dies if you try. I realize this is another subject, but maybe it's related.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let�s make one more addition to our series on hydraulics. I�ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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