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 - Show Coverage: Journey to Ankeny - by Cindy Ladage. We left Illinois on the first day of July and headed north and west for Ankeny, Iowa. Minus two kids, we traveled light with only the youngest in tow. As long as a pool was at the end of our destination she was easy to please unlike the other two who have a multitude of requirements to travel with mom and dad. Amana Colonies served as a respite where we ate a family style lunch that sustained us with more food than could reasonably fit into our ample physiques. The show at Ankeny
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