Paxton Self-Lubricating Centrifugal Supercharger - Self Serve
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The 3.6:1 step-up ratio offered by the internal gears is identical between the two superchargers. This ratio is important when trying to determine impeller speed. Here is the formula used to figure out the impeller speed at a given rpm: crank pulley blower pulley x 3.6 (step-up ratio) x rpm. Putting that formula into action looks like this: 8 inches 3.33 inches x 3.6 x 5,900 rpm = a maximum impeller speed of 51,027 rpm at the 5,900-rpm limit plugged into the formula. This formula will work with any centrifugal super-charger. Be sure to adjust the step-up ratio as different superchargers feature different ratios. View Related Article
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