7/22/2010

Roots Blower

Roots Supercharger is One of the Oldest Vacuum Pumps
Executive Summary By Ryan Coisson

In the eighteen sixties a vacuum pump was created by Philander and Francis Marion Roots. The roots supercharges is one of the oldest vacuum pumps for cars.

Superchargers basically supply more air to the engine. A roots supercharges is really nothing more than an air blower. The supercharger has messing lobes that spin and trap air in-between. The roots supercharger is not considered very efficient. Many muscle car owners like the supercharger because it sticks out of the hood and represents classic older style muscle cars.

A vacuum system specialist will be able to repair any vacuum pump, including superchargers.
A supercharger is great way to add power and performance to your car.

All About Superchargers
Executive Summary By Brent Harris

A supercharger, which is also known as a blower, is a mechanical device that is mechanically driven by belt, gear, or chain-drive of the engine's crankshaft. Today you get two types of superchargers; positive displacement devices that are blowers in the true sense of the word and are installed on top of the engine cover, and the more modern centrifugal devices that is more of a mechanically driven turbocharger that compresses air rather than just blowing air.

The classic positive displacement blower falls into two types: the Roots type and the Lysholm or twin screw. The two lobes do not overlap completely, leaving a small air pocket between them, which become gradually smaller as the air pocket moves through the device, the result in air compression and an increase in air pressure.

Unlike the lobes in a Roots supercharger, the lobes in twin-screw superchargers are manufactured to a high precision to ensure that internal leakage does not occur. Like turbochargers, centrifugal superchargers have a narrowing circular scroll through which air is forced to create internal boost pressure.

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