: a gear wheel with radial teeth parallel to its axis
called alsospur wheel
Illustration of spur gear
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There seemed to be no creaks or rattles from the suspension, though there was plenty of noise from other sources: the harsh note of the Cosworth, the whoosh of the turbo, and, most of all, the heterodyning of the spur gears in the prototype transfer box.—Ray Hutton, Car and Driver, 18 Aug. 2023
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