Franklin O-200

{{Short description|American air-cooled aircraft engine of the early 1940s}}

{{Use mdy dates|date=July 2023}}

{{Use American English|date=July 2023}}

{{Infobox Aircraft Begin

|name= O-200/4AC-199

|image = File:Franklin O-200.jpg

|caption = Franklin O-200 engine on display at the Hiller Aviation Museum

}}

{{Infobox Aircraft Engine

|type= Piston aircraft engine

|national origin = United States

|manufacturer= Franklin Engine Company

|first run= 1941

|major applications=

|number built =

|developed from =

|developed into =

|variants with their own articles =

}}

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 {{convert|200|cuin|L|abbr=on|0}}. The power output ranged between {{convert|65|hp|kW|abbr=on|0}} and {{convert|100|hp|kW|abbr=on|0}} 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=

=Geared drive=

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

{{pistonspecs

|

|ref={{fact|date=May 2012}}

|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)

|length=

|diameter=

|width=

|height=

|weight=224 lb (102 kg)

|valvetrain=

|supercharger=

|turbocharger=

|fuelsystem=

|fueltype=

|oilsystem=

|coolingsystem=Air-cooled

|power=102 hp (76 kW) at 3,500 rpm

|specpower=

|compression=

|fuelcon=

|specfuelcon=

|oilcon=

|power/weight=

}}

See also

{{aircontent

|see also=

|related=

|similar engines=

|similar aircraft=

|lists=

}}

References

{{Commons category}}

;Notes

{{reflist}}

;Bibliography

{{refbegin}}

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

{{refend}}

{{Franklin aeroengines}}

{{US military piston aeroengines}}

Category:Franklin aircraft engines

Category:1940s aircraft piston engines

Category:Boxer engines