Engine accessory belt drive pulley

A method for driving a supercharger and engine accessories that are coupled to an internal combustion engine and driven by belt drives, the method comprising the steps of:

• mounting a belt drive pulley system to the engine, the belt drive pulley system including a plurality of pulleys being interfaced with respective ones of the belt drives, the plurality of said pulleys being co-axially aligned and coupled to rotate simultaneously about an axle that is fixedly coupled to the engine,
• wherein a first pulley in the plurality of said pulleys takes power from a crankshaft pulley of the engine through a first belt drive operating in a proximal plane, the proximal plane being vertically oriented with respect to the engine,
• wherein a second pulley in the plurality of said pulleys transfers the power to a second belt drive operating in a distal plane to drive the engine accessories, the distal plane being vertically oriented with respect to the engine, and
• wherein the proximal and distal planes are non-co-planar, the proximal plane being closest to the engine relative to the distal plane and the distal plane being furthest from the engine relative to the proximal plane;
• and
• configuring a third belt drive operating in the distal plane to drive only the supercharger and water pump from the crankshaft pulley but no other engine accessories so that the belt path length of the third belt drive is minimized.