Continental R-670
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The R-670 (factory designation W-670) was a seven cylinder 4-cycle radial aircraft engine produced by Continental displacing 668 cubic inches and a dry weight of 465lbs. Horsepower varied from 210 to 240 at 2200 rpm. This engine was used on many airplanes in the 1930s and 1940s. The R-670 was widely used in the PT-17 Stearman primary training aircraft of the U.S. military.
In addition to being used in aircraft the R-670 was used in a number of light armored vehicles of World War II.
[edit] Specifications (R-670-K)
General characteristics
- Type: 7 cylinder air cooled radial
- Bore: 130mm (5.125 in)
- Stroke: 117mm (4.625 in)
- Displacement: 10,9liter (668 cu in)
- Length: 792mm (31.187 in)
- Width: mm (in)
- Height: 1,079mm (42.50 in)
- Dry weight: 208kg (460 lbs)
Components
- Valvetrain: 1 inlet and 1 exhaust valve per cylinder
- Fuel system: 1 Stromberg Carburetor
- Fuel type: 65 octane
- Cooling system: air
Performance
- Power output: 225hp @ 2,175 RPM
- Compression ratio: 5.4:1
- Power-to-weight ratio: 2.04lb/hp @ cruise speed
[edit] Application
- American Airmotive NA-75
- Boeing Stearman
- CallAir Model A
- Cessna 195
- Fairchild PT-23
- G class blimp
- M1 Combat Car
- M2 Light Tank
- Timm N2T Tutor
[edit] References
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