The Kinner R-5 is an American five cylinder

radial engine The radial engine is a reciprocating engine, reciprocating type internal combustion engine, internal combustion engine configuration in which the cylinder (engine), cylinders "radiate" outward from a central crankcase like the spokes of a wheel. ...

for light general and sport aircraft of the 1930s.

Design and development

The R-5 was a development of the earlier

Kinner B-5 The Kinner B-5 was a popular five cylinder American radial engine for light general and sport aircraft of the 1930s. Design and development The B-5 was a development of the earlier K-5 with slightly greater power and dimensions. The main change ...

, with slightly greater power and dimensions. The main change was the increase in cylinder bore from 117 mm (4.625 in) to 127 mm (5 in) and an increase in piston stroke from 133.3 mm (5.25 in) to 139.7 mm (5.5 in). This led to a corresponding increase in displacement from 7.2 liters (441 cu in) to 8.8 liters (540 cu in). The R-5 was a rough running but reliable engine. Thousands of the R-5 and its derivatives were produced, powering many

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

trainer aircraft. Its military designation was R-540.

Applications

* Fleet Finch Model R * Howard DGA-18 *

Kinner Sportwing The Kinner Sportwing was a 1930s American light monoplane built by Kinner Airplane & Motor Corporation. Design and development The Sportwing was an improved version of the companies earlier Sportster designed by Max Harlow. An enlarged four-s ...

* Kinner Playboy * Meyers OTW * N2T Tutor * Ryan PT-22 Recruit

Variants

;R-5: ;R-53: ;R-55: ;R-56:

Specifications (Kinner R-5)

References

External links

* http://www.oldengine.org/members/diesel/Duxford/usaero4.htm {{US military piston aeroengines 1930s aircraft piston engines Aircraft air-cooled radial piston engines