> But a heavier tractor needs more power to move itself and the load it is pulling.
There are numerous ways engine horsepower is lost on its way to the drawbar, including rolling resistance. But the big one is wheel slip, particularly in lower gears. All other things being equal, a heavier tractor will have less wheel slip than a lighter one. But in the end, what counts is how much power is delivered to the drawbar. And the Nebraska tests clearly show the 5010 has over a third more drawbar horsepower than the 4020 in every gear. It's silly to claim a stock 4020 can out-pull a stock 5010.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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