Talk:Powerplus supercharger

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This page kind of sucks in the absence of another page explaining the sliding-vane principle or how a pump operates on that principle. Seems to me that the vanes rotate in a chamber. Each vane's axis of rotation shifts as it turns. The shift enlarges the trapped air volume for the forward stroke and reduces the trapped air volume for the return stroke. This action provides a net positive displacement from inlet to outlet. — Preceding unsigned comment added by 93.39.242.212 (talk) 12:31, 20 November 2011 (UTC)