O-300/6AC-298
Type Piston aircraft engine
National origin United States
Manufacturer Franklin Engine Company
First run 1941

The Franklin O-300 (company designation 6AC-298) was an American air-cooled aircraft engine of the early 1940s. The engine was of six-cylinder, horizontally-opposed layout and displaced 300 cu in (5 L). The power output ranged between 130 hp (97 kW) and 175 hp (130 kW) depending on variant. The 6ACG-298 featured a geared propeller drive.

An enlarged displacement version was known as the O-315, 6A3 or 6AL-315.

Variants

O-300

6AC-298
6AC-298-F3 (O-300-1)
130 hp (97 kW) at 2,600 rpm
6ACT-298
150 hp (112 kW) at 3,000 rpm
6ACT-298-J4 (O-300-3)
150 hp (112 kW) at 2,930 rpm
6ACT-298-35 (O-300-11)
150 hp (112 kW) at 2,930 rpm
6ACG-298-P5 (O-300-9)
Geared propeller drive 0.63:1, 160 hp (119 kW) at 3,200 rpm
6ACTS-298
Supercharged, 160 hp (119 kW) at 3,200 rpm
6ACTS-298-K4 (O-300-7)
Supercharged, 175 hp (130 kW) at 3,000 rpm
6ACV-298
Vertical installation for helicopters,160 hp (119 kW) at 3,250 rpm

O-315 (6A3)

6AL-315
175 hp (130 kW)
6ALG-315
175 hp (130 kW)

Applications

Direct drive

Geared drive

Supercharged

Specifications (6AC-298)

Data from

General characteristics

Components

  • Cooling system: Air-cooled

Performance

  • Power output: 130 hp (97 kW) at 2,600 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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