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The Continental O-300 and the C145 are a family of air-cooled flat-6 aircraft piston engines built by Teledyne Continental Motors.Christy, Joe: ''Engines for Homebuilt Aircraft & Ultralights'', pages 60-63. TAB Books, 1983.
First produced in 1947, versions were still in production . It was produced under licence in the United Kingdom by Rolls-Royce in the 1960s.
The C-145 was developed from the C-125 engine. Both powerplants share the same crankcase, although the C-145 produces an additional through a longer piston stroke, higher compression ratio of 7.0:1 and different carburetor jetting.
The O-300 is a modernized C-145 and retains the same weight, dimensions, bore, stroke, compression ratio, displacement and output power of the earlier engine.
Flight Global, 21 March 1963, p. 399
/ref> ;GO-300 :Geared O-300, at 3200 crankshaft rpm, 2400 propeller rpm. ;GO-300-A : ;GO-300-C : ;GO-300-D : ;Voyager 300 :Liquid-cooled, fuel-injected version developing at 2,700 rpm. ;Rolls-Royce-Continental O-300:Licence production in the United Kingdom.
Development
The C-145 was developed from the C-125 engine. Both powerplants share the same crankcase, although the C-145 produces an additional through a longer piston stroke, higher compression ratio of 7.0:1 and different carburetor jetting.
The O-300 is a modernized C-145 and retains the same weight, dimensions, bore, stroke, compression ratio, displacement and output power of the earlier engine.
GO-300
The GO-300 employs a reduction gearbox, so that the engine turns at 3200 rpm to produce a propeller rpm of 2400. The GO-300 produces whereas the ungeared O-300 produces . The GO-300 engine has a TBO (Time Between Overhaul) of 1200 hours, while 1800 hours is the standard for ungeared O-300 engines. The GO-300 engine suffered reliability problems as a result of pilots mishandling the engine and operating it at too low an engine rpm. This caused the Cessna Skylark to develop a poor reputation for engine reliability. Many Skylarks flying today have been converted to different, larger-displacement, direct-drive engines.Variants
;C145 :Six-cylinder, , direct-drive engine. ;C145-2: ;O-300 :Modernized C145, , direct drive engine. ;O-300-A : ;O-300-B : ;O-300-C : ;O-300-D : ;O-300-E :Limited production for the Beagle B.218X twin that never went into production/ref> ;GO-300 :Geared O-300, at 3200 crankshaft rpm, 2400 propeller rpm. ;GO-300-A : ;GO-300-C : ;GO-300-D : ;Voyager 300 :Liquid-cooled, fuel-injected version developing at 2,700 rpm. ;Rolls-Royce-Continental O-300:Licence production in the United Kingdom.
Applications
O-300
* Aeronca Sedan *Baumann Brigadier
The Baumann Brigadier was a prototype American light transport aircraft of the late 1940s. It was a twin-engined monoplane, which, unusually, was of pusher configuration. Only two were built, plans for production never coming to fruition.
Devel ...
* Cessna 160
The Cessna 160 was an American single-engine, four-seater, high wing, strut-braced, prototype monoplane designed in 1962 by Cessna.
Development beyond the prototype stage was not pursued and only one example was constructed.
Development
Cess ...
- intended for production model
* Cessna 170
The Cessna 170 is an American light, single-engined, general aviation aircraft produced by the Cessna Aircraft Company between 1948 and 1956.
It is the predecessor of the Cessna 172, the most produced aircraft in history, which replaced ...
* Cessna 172 and T-41 Mescalero
* Maule M-4
* Meyers MAC-145 __NOTOC__
The Meyers MAC-125 is a light sport aircraft developed in the United States in 1947, produced in a small series as the MAC-145.Taylor 1989, 654Simpson 1995, 244-45
Design and development
The basic design, common to both models, was tha ...
* Taylorcraft 15
* Temco TE-1A
The Temco T-35 Buckaroo (company designation TE-1) was designed in the late 1940s as an extremely low-cost trainer for commercial and military markets. Temco's failure to secure a United States Air Force order for the Buckaroo forced it to turn ...
GO-300
* Cessna 175 *Goodyear GZ-19 Goodyear may relate to:
Companies
* Goodyear Tire and Rubber Company
* Goodyear Redwood Company, foresting company operated from 1916 to 1932
* Edward Goodyear, a florist company in London, England
* Goodyear Lumber Company, one of many lumber ...
and GZ-19A
Voyager 300
*Alexeev Strizh Alexeyev, Alekseyev, Alexeiev, Alexeev or Alekseev (russian: Алексе́ев) is a common Russian surname that is derived from the male given name Alexey (Алексей) and literally means ''Alexey's''. Often the same name appears in English i ...
Specifications (O-300)
Reference: ''Engines for Homebuilt Aircraft & Ultralights''See also
References
{{US military piston aeroengines Boxer engines 1940s aircraft piston engines O-300