Franklin O-425

O-425/6AG/6V6
Type Piston aircraft engine
National origin United States
Manufacturer Franklin Engine Company
First run 1944

The Franklin O-425 (company designation 6AG/6V6) was an American air-cooled aircraft engine that first ran in the mid-1940s. The engine was of six-cylinder, horizontally-opposed layout and displaced 425 cu in (7 L). The power output was between 240 hp (179 kW) and 285 hp (213 kW) depending on variant. The O-405-13 (6V6-300-D16FT) of 1955 was a vertically mounted, turbocharged and fan cooled version for helicopters.

Variants

6AG6-245 (XO-425-5/O-425-9)
Geared propeller drive at 0.623:1, 245 hp (183 kW) at 3,300 rpm
6AGS6-245 (XO-425-3)
Supercharged and geared, 250 hp (186 kW) at 3,200 rpm
6V6-245-B16F (XO-425-1)
Vertically mounted, fan-cooled helicopter version, 245 hp (183 kW) at 3,275 rpm
O-425-2
Supercharged version of XO-425-1
6V6-300-D16FT (O-425-13)
Vertically mounted, turbocharged, fan-cooled helicopter version, 285 hp (213 kW) at 3,275 rpm

Applications

Specifications (6AG6/XO-425-5)

Data from

General characteristics

  • Type: 6-cylinder air-cooled horizontally opposed aircraft piston engine
  • Bore: 4.75 in (120.7 mm)
  • Stroke: 4.0 in (101.6 mm)
  • Displacement: 425.3 in³ (6.97 L)
  • Dry weight: 405 lb (184 kg)

Components

  • Cooling system: Air-cooled

Performance

  • Power output: 245 hp (183 kW) at 3,300 rpm

See also

Comparable engines

Related lists

References

Notes
    Bibliography

    • Gunston, Bill. (1986) World Encyclopedia of Aero Engines. Patrick Stephens: Wellingborough. p. 57
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.