Torque rise is what most people are actually talking about when they say torque/lugging power or get thinking that a 5HP electric motor makes more power than a 5 HP gasoline motor. Compare a two stroke Detroit diesel to a four stroke Cat of the same HP. The Detroit will up shift through the gears and is still pullIing hard when it hits the max rpm governor. The Cat as it approaches redline is falling flat and running out of "pulling power as volumetric efficiency is rapidly dropping as rpm increases. The airflow path and cam timing can not fully fill the cylinders. Take any short cam timed, small port engine and dyno the rapid drop in torque as it approaches peak HP rpm. Thus also a very rapid and pronounced torque rise as the engine is lugged down from peak HP rPms.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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