The Curtiss OXX was an early, dual ignition water-cooled V-8 aero engine derived from the Curtiss OX.[1]

OXX
OXX-6 at the National Air and Space Museum
Type	V-8 water-cooled piston engine
National origin	United States of America
Manufacturer	Curtiss
Developed from	Curtiss OX

Variants

Curtiss OXX-2

Curtiss OXX-3

Curtiss OXX-5

Curtiss OXX-6

Applications

• Aeromarine 39
• Aeromarine 40
• Burgess-Dunne
• Curtiss Autoplane
• Curtiss F
• Curtiss FL
• Curtiss JN-4
• Curtiss MF
• Curtiss N-9
• Standard J-1

Engines on display

• The Kansas Aviation Museum has an OXX-6 on display.[2]
• The Yanks Air Museum, Chino, CA has an OXX-6 on display

The Cradle of Aviation Museum, Garden City, NY has an OXX-2 on exhibit.

Specifications (OXX-6)

General characteristics

• Type: 8-cylinder water-cooled Vee aircraft piston engine
• Bore: 4.25 in (114 mm)
• Stroke: 5 in (127 mm)
• Displacement: 567 in³ (9.3 L)
• Dry weight: 401 lb (182 kg)

Components

• Cooling system: Water-cooled

Performance

• Power output: 100 hp (75 kW) at 1,400 rpm
• Compression ratio: 4.92:1

See also

• List of aircraft engines

References

Wikimedia Commons has media related to Curtiss OXX.

• Molson, K. M. (1972) "The Curtiss OX-5 Engine." Journal of the American Aviation Historical Society.
• US Department of Transportation Federal Aviation Administration Type Certificate Data Sheet Curtiss OXX-6 (Group 2 - Domestic engines approved prior to 7/15/29)