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Continental R-670

Seven-cylinder four-cycle radial aircraft engine

Field	Value
name	R-670
image	ContinentalW-670.jpg
caption	Continental W670 on display
engine_type	Piston aircraft engine
manufacturer	Continental Motors
first_run	1934
major_applications

The Continental R-670 (factory designation W670) was a seven-cylinder four-stroke radial aircraft engine produced by Continental displacing 668 cubic inches (11 litres) and a dry weight of 465 lb. Horsepower varied from 210 to 240 at 2,200 rpm. The engine was the successor to Continental's first radial engine, the 170 hp Continental A-70. This engine was used on many aircraft 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.

Variants

Data from: Jane's All the World's Aircraft 1938 Variants of the W670 included: ;W670-K:carburetor, 5.4:1 compression, 65 Octane, front exhausts and 225 hp ;W670-L:carburetor, 5.4:1 compression, 73 Octane, rear exhausts and 225 hp ;W670-M:carburetor, 6.1:1 compression, 80 Octane, front exhausts and 240 hp ;W670-N:carburetor, 6.1:1 compression, 80 Octane, rear exhausts and 240 hp ;W670-K1:fuel injection, 5.4:1 compression, 73 Octane, front exhausts and 230 hp ;W670-L1:fuel injection, 5.4:1 compression, 73 Octane, rear exhausts and 230 hp ;W670-M1:fuel injection, 6.1:1 compression, 80 Octane, front exhausts and 250 hp ;W670-N1:fuel injection, 6.1:1 compression, 80 Octane, rear exhausts and 250 hp

Applications

Aircraft

American Airmotive NA-75
Boeing-Stearman Model 75 (PT-17, N2S)
CallAir Model A
Cessna 190
Eagle Aircraft Eagle 220
Fairchild PT-23
Funk F-23
G class blimp
Grumman G-164 Ag Cat
Kellett K-2A, K-4
Morane-Saulnier MS.317
Timm N2T Tutor
Waco 240-A
Waco Standard Cabin series (UEC, UIC, UKC, UKC-S, UKS, VKS)
Waco Custom Cabin series (UOC, VQC)
Waco A series (UBA, ULA)
Waco F series (UBF, UMF, UPF)

Armored fighting vehicles

T2 Combat Car
T4 Combat Car
M1 Combat Car
M2 Light Tank
M3 Stuart
Landing Vehicle Tracked (LVT-2, -4; LVT(A)-1, -2, -4, -5)

Specifications (R-670-K)

| and start a new, fully-formatted line with -- |power/weight=0.49 hp/lb at cruising rpm

References

Notes

Bibliography

Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989.
Jane's Fighting Aircraft of World War II. London. Studio Editions Ltd, 1998.

References

Gunston 1989, p.42.
(1938). "Jane's All the World's Aircraft 1938". Sampson, Low & Martin company Limited.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

1930s-aircraft-piston-engines aircraft-air-cooled-radial-piston-engines continental-aircraft-engines

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