Kinner B-5
1930s American piston aircraft engine
title: "Kinner B-5" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1930s-aircraft-piston-engines", "aircraft-air-cooled-radial-piston-engines"] description: "1930s American piston aircraft engine" topic_path: "general/1930s-aircraft-piston-engines" source: "https://en.wikipedia.org/wiki/Kinner_B-5" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary 1930s American piston aircraft engine ::
::data[format=table title="infobox aero engine"]
| Field | Value |
|---|---|
| name | B-5 |
| image | Kinner b-5.jpg |
| caption | A Kinner B-5 on display at the Old Rhinebeck Aerodrome in New York, as used in their Fleet Finch biplane. |
| engine_type | Radial engine |
| manufacturer | Kinner Airplane & Motor Corporation |
| developed_from | Kinner K-5 |
| developed_into | Kinner R-5 |
| :: |
|name= B-5 |image = Kinner b-5.jpg |caption = A Kinner B-5 on display at the Old Rhinebeck Aerodrome in New York, as used in their Fleet Finch biplane. |engine_type= Radial engine |national_origin = |manufacturer= Kinner Airplane & Motor Corporation |first_run= |major_applications= |number_built = |developed_from = Kinner K-5 |developed_into = Kinner R-5 |variants_with_their_own_articles =
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 was the increase in cylinder bore from 108 mm (4.25 in) to 117 mm (4.625 in) and a corresponding increase in displacement from 372 cu in (6.1 liters ) to 441 cu in (7.2 liters ). One difference the B-5 had from radial engines of other manufacturers was that each individual cylinder had its own camshaft, a system also used by the contemporary Soviet-built, 8.6 litre-displacement Shvetsov M-11 five cylinder radial, while most other radial engine designs used a "cam ring" for the same purpose, connected to every cylinder's valves. The B-5 was a rough running but reliable engine. The B-5 and its derivatives were produced in the thousands, powering many World War II trainer aircraft; its military designation was R-440. The B-5 was followed by the R-5 and R-55.
Applications
- Fleet Fawn
- Fleet Finch
- Kinner Sportster
- Kinner Sportwing
- Lincoln AP
- Monocoupe 125
- Redfern DH-2
- Ryan PT-22 Recruit
- Savoia-Marchetti S.56
Specifications (Kinner B-5)
| and start a new, fully-formatted line with -- |ref=Jane's all the World's Aircraft 1938 |type=Five-cylinder, air-cooled, radial |bore=4.625 in |stroke=5.25 in |displacement=441 cuin |length=32.325 in |diameter=45.375 in |width= |height= |weight=295 lb |valvetrain=1 Inlet and 1 Exhaust valve per cylinder, individual camshafts for each cylinder |supercharger= |turbocharger= |fuelsystem=1x Holley or Stromberg Carburetor |fueltype=73 Octane |oilsystem=Circulating dry sump system |coolingsystem=Air-cooled |power=125 hp at 1,925 rpm max; 89 hp at 1,725 rpm cruise |specpower= |compression=5.25:1 |fuelcon= |specfuelcon=0.60 lb/hp hr (0.365 kg/kw hr) |oilcon=0.025 lb/hp hr (0.0152 kg/kw hr) |power/weight=0.42 hp/lb at cruise
References
References
- (1938). "Jane's all the World's Aircraft 1938". Sampson Low, Marston & company, ltd.
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