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The Rotorway RW133 is a piston engine designed for use in helicopters and homebuilt aircraft.

RotorWay RW133
Type	Horizontally opposed piston aircraft engine
National origin	United States
Manufacturer	RotorWay International
Major applications	RotorWay Scorpion

Design and development

The RW-133 was developed in 1979 as an all-new piston engine for amateur-built aircraft, including a new crankcase oil system. The helicopter version features a dry sump oil system and a turbocharger option increasing power to 160 hp (119 kW).[1] All components of the engine are cast and manufactured at RotorWay Foundries, except the Mallory Ignition and Dell'Orto carburetor.[2]

Specifications (variant)

General characteristics

• Type: Four-cylinder air-cooled horizontally opposed piston engine
• Bore: 4 in (102 mm)
• Dry weight: 160 lb (73 kg) with propeller

Components

• Fuel system: Updraft carburetor with manual mixture control
• Fuel type: 80/87 avgas minimum
• Cooling system: Water-cooled

Performance

• Power output: 100 hp (75 kW) @2700rpm

References

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