View source for Continental O-280

{{Short description|Aircraft engine family}}
{{Refimprove|date=March 2010}}
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{|{{Infobox Aircraft Begin
 |name= O-280  
 |image = 
 |caption =  
}}
{{Infobox Aircraft Engine
 |type= [[Aircraft engine|Piston aircraft engine]]
 |national origin = United States
 |manufacturer= [[Teledyne Continental Motors|Continental Motors]] 
 |first run= 
 |major applications=     
 |number built = 
 |program cost = 
 |unit cost = 
 |developed from = 
 |developed into = 
 |variants with their own articles = 
}}
|}
The '''Continental C115''', '''C125''' and '''C140''' aircraft engines were manufactured by [[Teledyne Continental Motors|Continental Motors]] in the 1940s, all sharing the US military designation '''O-280'''. These engines feature a [[flat-6]] configuration and produce 115&nbsp;hp (86&nbsp;kW) 125&nbsp;hp (93&nbsp;kW) or 140&nbsp;hp (104&nbsp;kW) respectively.

The C115 was in production from [[1945 in aviation|1945]] to [[1951 in aviation|1951]], the C125 was in production from [[1945 in aviation|1945]] to [[1952 in aviation|1952]], and the C140 from [[1945 in aviation|1945]] to [[1946 in aviation|1946]].

The C125 has the same crankcase as the [[Continental O-300|Continental C145]], although the engines differ in stroke, compression ratio and carburetor jetting. The C125 features a cast [[iron]] camshaft and hydraulic tappets.<ref name="Christy">Christy, Joe: ''Engines for Homebuilt Aircraft & Ultralights'', pages 60-62. TAB Books, 1983. {{ISBN|0-8306-2347-7}}</ref>

==Applications==

===C125===
* [[Aero-Flight Streak]]
* [[Baumann Brigadier]]
* [[Call-Air A-3]]
* [[Globe Swift]]
* [[Grumman Tadpole]]
* [[Hockaday Comet]]
* [[SAI KZ VII]]
* [[Meyers MAC-145|Meyers MAC 125]]
* [[Miles Gemini]]

==Specifications (C125)==
<small>Reference: ''Engines for Homebuilt Aircraft & Ultralights''<ref name="Christy" /></small>
{{pistonspecs
|<!-- If you do not understand how to use this template, please ask at [[Wikipedia talk:WikiProject Aircraft]] -->
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|type=6-cylinder air-cooled [[flat-6|horizontally opposed]] aircraft piston engine
|bore=4 <small> {{frac|1|16}} </small> in (4.0625 in resp. 103.12&nbsp;mm)
|stroke=3 <small>{{frac|5|8}} </small> in (3.625 in resp. 92.075 mm)
|displacement=282 in<sup>3</sup> (4.6 L)
|length= 39.75 in (101.0 cm)
|diameter=
|width=31.5 in (80.0 cm)
|height=23.25 in (59.0 cm)
|weight=286 lb (130 kg)
|valvetrain=
|supercharger=
|turbocharger=
|fuelsystem=
|fueltype=
|oilsystem=
|coolingsystem=Air-cooled
|power=125 hp (93 kW) at 2,550 rpm
|specpower=0.44 hp/in<sup>3</sup> (20.2 kW/L)
|compression=6.3:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight= 0.43 hp/lb (0.72 kW/kg)
}}

==See also==
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*[[List of aircraft engines]]
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==References==
{{reflist}}
* Gunston, Bill. (1986) ''World Encyclopedia of Aero Engines''. Patrick Stephens: Wellingborough.
* Erickson, Jack. ''[http://www.enginehistory.org/Piston/HOAE/Continental1.html Horizontally-Opposed Aero Engines]''

{{Continental aeroengines}}
{{US military piston aeroengines}}

[[Category:Boxer engines]]
[[Category:1940s aircraft piston engines]]
[[Category:Continental aircraft engines|O-280]]