Horse power is only how fast a specific task can get done. Pull a hay wagon weighing 2000 pounds up a 10% grade for one mile in 6 minutes (assumes full rated power on the engine/motor). It can be done by any power source with that rated horse power. Thus a tiny MC racing engine, or a 2 cylinder JD. are equal. It certainly requires different gearing to have it take place, but the power is equal. The difference between them will be in the capability to continue to produce that level of power output. Unless force fed massive cooling air, the MC engine would seize. If it made it (with extra air) it would not do it 20 times in a row. It is designed to have to make 15 horse power at 80 MPH for a long time, and 150 HP for 10 seconds at a burst. The tractor engine can do it for 10,000 hours. Jim
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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