My wife's father is a retired auto-engine-engineer. According to his opinion and experience - large combustion chambers have always resulted in the best fuel efficiecy - i.e. two big cylinders in the Deere, as opposed to later engines with many small cylinders. But, the drawback to the two-cylinder is the lack of versatility and RPMs limitations. Those figures for the old Deeres are pretty impressive condidering they are not far off from the current world's record.
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Today's Featured Article - Tractor Proflie: John Deere Model R - by Staff. The John Deere Model R, the last of the lettered tractors, was the first diesel-powered tractor produced by John Deere with a gasoline starting engine. It was also the first tractor they produced that had an optional steel cab. The photo above shows the tractor w
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