O-300 | |
---|---|
Rolls-Royce Continental O-300 on display at the Solent Sky museum, England. | |
Type | Piston aircraft engine |
National origin | United States |
Manufacturer | Continental Motors |
Major applications | Cessna 172 Cessna T-41 A Mescalero Cessna 175 Skylark Cessna 170 Maule M-4 |
Produced | 1947- |
Developed from | Continental C-125 |
The Continental O-300 and the C145 are a family of air-cooled flat-6 aircraft piston engines built by Teledyne Continental Motors. [1]
First produced in 1947, versions were still in production as of 2004 [update] . It was produced under licence in the United Kingdom by Rolls-Royce in the 1960s.
The C-145 was developed from the 125 hp (93 kW) C-125 engine. Both powerplants share the same crankcase, although the C-145 produces an additional 20 hp (15 kW) through a longer piston stroke, higher compression ratio of 7.0:1 and different carburetor jetting. [1]
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. [1]
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 175 hp (130 kW) whereas the ungeared O-300 produces 145 hp (108 kW). [1]
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. [2]
Reference: Engines for Homebuilt Aircraft & Ultralights [1]
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