This paper reviews a new cast polyurethane V-belt using a 60 deg sheave angle system representing a new concept in belts. It discusses trends in engine design influencing belt drives - higher accessory loads, needs for compactness, cost reduction, and longer warranties. It explains how this belt meets future needs through higher capacities, smaller cross sections, higher coefficient of friction, and greater manufacturing uniformity. It gives the background for the selection of a 60 deg angle system and shows, with graphs and line drawings, each advantage built into the belt drive. It discusses a time-life design concept available to the engineer designing V-belt drives.
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