This is the fifth generation belt reduction drive we’ve developed specifically for the harsh environment encountered on hovercraft and airboats. It’s designed for engines up to 35 horsepower, and constructed of aluminum and stainless steel for durability in a wet environment. The cogged belt is quiet and efficient, and doesn’t slip when wet. An aluminum spacer with a 6 hole 75mm diameter pattern allows you to mount nearly any fan or propeller. Ratios between 1.40 and 1.75 are available. The standard propeller shaft offsets are 6.5 – 7 inches and 10 – 10.5 inches (depending on ratio), but different offsets are available upon request. For more information, contact us!