Franklin O-200

O-200/4AC-199
Franklin O-200 engine on display at the Hiller Aviation Museum
Type	Piston aircraft engine
National origin	United States
Manufacturer	Franklin Engine Company
First run	1941

The Franklin O-200 (company designation 4AC-199) was an American air-cooled aircraft engine of the early 1940s. The engine was of four-cylinder, horizontally-opposed layout and displaced 200 cu in (3 L). The power output ranged between 65 hp (48 kW) and 100 hp (75 kW) depending on variant. The O-200-5 (4ACG-199) featured a geared propeller drive.

Variants

4AC-199

O-200-1

O-200-3

O-200-7

O-200-9

4ACG-199

O-200-5

Applications

Direct drive

• CAP-1 Planalto
• CAP-5 Carioca
• Aeronca Arrow
• Babcock LC-11
• Culver Cadet
• LAR-90
• XPQ-8
• TDC-1 target drone
• Interstate Cadet
• Langley Twin
• Monocoupe 90
• Piasecki PV-2
• Rearwin Skyranger
• Sackett Jeanie
• Stinson 10
• Stinson L-9
• Stout Skycar

Geared drive

• Convair (Stinson) Model 103
• Spratt Tilt-Wing
• Goodyear Duck
• Interstate Cadet
• Interstate L-6
• Piper PA-7 Skycoupe

Specifications (O-200-5/4ACG-199)

Data from ^{[citation needed]}

General characteristics

• Type: 4-cylinder air-cooled horizontally opposed aircraft piston engine
• Bore: 4.25 in (108 mm)
• Stroke: 3.5 in (88.9 mm)
• Displacement: 198.6 in³ (3.25 L)
• Dry weight: 224 lb (102 kg)

Components

• Cooling system: Air-cooled

Performance

• Power output: 102 hp (76 kW) at 3,500 rpm

See also

Comparable engines

• Continental O-200

Related lists

• List of aircraft engines

References

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

By displacementTwo-cylinder engines

By displacement	O-110 O-120
By company designation	2A-110 2A-120 2A4-45 2A4-49 2AL-112

Four-cylinder engines

By displacement	O-150 O-170 O-175 O-180 O-200 O-225 O-235
By company designation	4A-225 4A-235 4A4-100 4A4-75 4A4-85 4A4-95 4AC-150 4AC-171 4AC-176 4AC-199 4ACG-176 4AL-225 Sport 4

Six-cylinder engines

By displacement	O-265 O-300 O-315 O-335 O-350 O-405 O-425 O-500
By company designation	6A-335 6A-350 6A3 6A4 6A8-215 6AC-264 6AC-298 6AC-403 6ACV-245 6AG-335 6AG4-185 6AG6-245 6AGS-335 6AGS6-245 6AL-315 6AL-335 6AL-500 6ALV-335 6AS-335 6V-335 6V4 6V6-245-B16F 6V6-245 6V6-300-D16FT 6V6-300 6VS-335

Eight-cylinder engines

By displacement	O-400 O-540
By company designation	8AC-398 8ACG-398 8ACG-538 8ACGSA-538 8ACSA-538

12-cylinder engines

By displacement	O-595 O-805
By company designation	12AC-596 12AC-806