Franklin O-400
American piston aircraft engine
From Wikipedia, the free encyclopedia
The Franklin O-400 (company designation 8AC) was an American air-cooled aircraft engine of the 1940s. The engine was of eight-cylinder, horizontally-opposed layout and displaced 397 cu in (6.5 L). The power output was 235 hp (175 kW).
National originUnited States
First run1941
| O-400/8AC | |
|---|---|
| Type | Piston aircraft engine |
| National origin | United States |
| Manufacturer | Franklin Engine Company |
| First run | 1941 |
Variants
- 8AC-398
- 200 hp (149 kW) at 2,600 rpm.
- 8ACG-398
- 235 hp (175 kW) at 3,500 rpm. The 8ACG-398 was unusual in using a reduction gearing for take-off and direct drive for cruising.
Specifications (8ACG-398)
General characteristics
- Type: 8-cylinder air-cooled horizontally opposed aircraft piston engine
- Bore: 4.25 in (108.0 mm)
- Stroke: 3.5 in (88.9 mm)
- Displacement: 397.2 cu in (6,509 cc)
Components
- Valvetrain: OHV
- Cooling system: Air-cooled
Performance
- Power output: 235 hp (175.2 kW) at 2,600 rpm
See also
Related lists
References
- Notes
- Bibliography
- Gunston, Bill. (1986) World Encyclopedia of Aero Engines. Patrick Stephens: Wellingborough. p. 57