Let's say power is equal , the one thing not being addressed here is the front / rear weight bias of these same tractors. The JD by it's design has a lot more of it's weight on the rear where it counts than the others. In bone stock form and equal gross weight , the JD will out pull the others in the loose field soil. Ever notice how far forward in the chassis the engine of an Ollie is? Same with IH. The front of the valve cover on a JD 2cyl is about the same as the rear of the engine on the others. That's why the others need all the added weight. Added weight uses up HP that should be used to pull. John Deere even kept this concept with the "new gen" tractors and even used it as an advertising tool. Look how far back the engine is in a 4020 compared to an Ollie 1850 or IH 806. Those two tractors need added weight or duals to do what the 4020 does stock.
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Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
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