Belt drive for centrifugal supercharger

Paxton supercharger mounted on BMW M30B34 engine needed a non-slipping belt drive. The engine drives supercharger at its maximum allowed speed and pressure in 7000 rpm redline.

For this hard task, 10-rib belt was needed with right profile drive pulleys to achieve best grip without extra belt wear. For good contact the pulleys are oversize diameter than usual catalog products. They were made of Al-alloy and the anoded coating is thicker than usual for wear preventing reasons.