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 - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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