O-540/8AC
Type Piston aircraft engine
National origin United States
Manufacturer Franklin Engine Company
First run 1942

The Franklin O-540 (company designation 8AC) was an American air-cooled aircraft engine that first ran in the early-1940s. The engine was of eight-cylinder, horizontally-opposed layout and displaced 540 cu in (9 L). The power output was nominally 300 hp (224 kW).

Variants

8ACG-538 (XO-540-1)
Geared propeller drive at 0.632:1, 300 hp (224 kW) at 3,200 rpm
8ACSA-538 (XO-540-7)
Supercharged, 300 hp (224 kW)
8ACGSA-538 (XO-540-3/O-540-5)
Supercharged and geared,330 hp (246 kW) at 3,200 rpm

Applications

Specifications (8ACG-538/XO-540-1)

Data from

General characteristics

Components

  • Cooling system: Air-cooled

Performance

  • Power output: 300 hp (224 kW) at 3,200 rpm

See also

Comparable engines

Related lists

References

Notes
    Bibliography
    • Gunston, Bill. (1986) World Encyclopedia of Aero Engines. Patrick Stephens: Wellingborough. p. 57
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