The Continental R-670 (factory designation W670) was a seven-cylinder four-cycle radial aircraft engine produced by Continental displacing 668 cubic inches (11 litres) and a dry weight of . 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 Continental may refer to: Places * Continent, the major landmasses of Earth * Continental, Arizona, a small community in Pima County, Arizona, US * Continental, Ohio, a small town in Putnam County, US Arts and entertainment * ''Continental'' (al ...

. 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 The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is the ...

.Gunston 1989, p.42. 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 ;W670-L:carburetor, 5.4:1 compression, 73 Octane, rear exhausts and ;W670-M:carburetor, 6.1:1 compression, 80 Octane, front exhausts and ;W670-N:carburetor, 6.1:1 compression, 80 Octane, rear exhausts and ;W670-K1:fuel injection, 5.4:1 compression, 73 Octane, front exhausts and ;W670-L1:fuel injection, 5.4:1 compression, 73 Octane, rear exhausts and ;W670-M1:fuel injection, 6.1:1 compression, 80 Octane, front exhausts and ;W670-N1:fuel injection, 6.1:1 compression, 80 Octane, rear exhausts and

Applications

Aircraft

American Airmotive NA-75 __NOTOC__ The American Airmotive NA-75 was an agricultural aircraft marketed in the United States in the 1960s, created by remanufacturing military surplus Boeing Stearman trainers. The aircraft were fitted with completely new, high-lift wings, ...

* Boeing-Stearman Model 75 (PT-17, N2S) *

CallAir Model A The Call-Air Model A is an American two- to three-seat utility aircraft designed by the Call brothers and built by the Call Aircraft Company, later developed into a successful line of agricultural aircraft. Design and development The Model A was ...

Cessna 190 The Cessna 190 and 195 Businessliner are a family of light single radial engine powered, conventional landing gear equipped, general aviation aircraft which were manufactured by Cessna between 1947 and 1954.Montgomery, MR & Gerald Foster: ...

* Eagle Aircraft Eagle 220 *

Fairchild PT-23 The Fairchild PT-19 (company designation Fairchild M62) is an American monoplane primary trainer aircraft that served with the United States Army Air Forces, RAF and RCAF during World War II. Designed by Fairchild Aircraft, it was a contempora ...

Funk F-23 The Funk F-23 was an agricultural aircraft produced in the United States during the 1960s. It was designed by Donald Funk using the fuselage frame of military surplus Fairchild PT-23 trainers as a starting point. The resulting aircraft was a l ...

G class blimp The ''G''-Class Blimps were a series of non-rigid airships (blimps) used by the United States Navy. In 1935, instead of developing a new design airship, the Navy purchased the Goodyear Blimp ''Defender'' for use as a trainer and utility airsh ...

Grumman G-164 Ag Cat The Grumman G-164 Ag Cat is a single-engined biplane agricultural aircraft, developed by Grumman in the 1950s. Development In 1955, Grumman preliminary design engineers Joe Lippert and Arthur Koch proposed the design for a "purpose-built" ...

* Kellett K-2A, K-4 * Morane-Saulnier MS.317 *

Timm N2T Tutor The Timm N2T Tutor is an American training monoplane built by the Timm Aircraft Corporation for the United States Navy as the N2T-1. Design and development The Timm S-160 (or Timm PT-160K) was a conventional tandem open-cockpit monoplane trai ...

Waco 240-A The Waco 10/GXE/Waco O series was a range of three-seat open-cockpit biplanes built by the Advance Aircraft Company, later the Waco Aircraft Company. Design and development The Waco 10 was a larger span development of the Waco 9, both single-eng ...

* 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 The Waco F series is a series of American-built general aviation and military biplane trainers of the 1930s from the Waco Aircraft Company. Development The Waco 'F' series of biplanes supplanted and then replaced the earlier 'O' series of 1927 ...

(UBF, UMF, UPF)

Armored fighting vehicles

* T2 Combat Car * T4 Combat Car * M1 Combat Car * M2 Light Tank * M3 Stuart *

Landing Vehicle Tracked The Amphibious Vehicle, Tracked (LVT) is an amphibious warfare vehicle and amphibious landing craft, introduced by the United States Navy and United States Marine Corps. (The USN and USMC use "L" to designate Amphibious vessels, also c ...

(LVT-2, -4; LVT(A)-1, -2, -4, -5)

Specifications (R-670-K)

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. *

External links

* https://web.archive.org/web/20070807212519/http://www.oldengine.org/members/diesel/Duxford/usaero1.htm {{US military piston aeroengines 1930s aircraft piston engines Aircraft air-cooled radial piston engines R-670