The Jacobs R-915 or Jacobs L-6 is a seven-cylinder, air-cooled, radial engine for aircraft manufactured in the United States, production started in 1936.

Design and development

The R-915 was effectively an enlargement of the R-755 with strengthened stressed parts. With a bore and

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of , for a

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of . Take-off power was around . The engine features steel cylinders with aluminum-alloy

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Variants

;R-915A1:Baseline variant; an enlarged R-755 ;R-915A3:Similar to the A1 but with Scintilla magnetoes ;R-915A4:With a power take-off for autogyros

Applications

* Avro Anson Mk II and Mk III * Beechcraft Model 18D * Beechcraft F-17D Staggerwing *

Fleet 50 The Fleet 50 Freighter was a Canadian twin-engine biplane general utility aircraft designed and built by Fleet Aircraft. This peculiar-looking aircraft had promise as a freighter and general use aircraft, but it was underpowered and only five we ...

* Howard DGA-15J *

Kellett KD-1 The Kellett KD-1 was a 1930s American autogyro built by the Kellett Autogiro Company. It had the distinction of being the first practical rotary-wing aircraft used by the United States Army and inaugurated the first scheduled air-mail service us ...

* Waco AQC, AGC, ARE, AVN

Engines on display

*A preserved Jacobs R-915 is on display at the Nanton Lancaster Society. *A Jacobs L-6 is on display at the

Canadian Museum of Flight The Canadian Museum of Flight (formally the Canadian Museum of Flight Association since 1998) is an aviation museum at the Langley Regional Airport in Langley, British Columbia, Canada. The museum has over 25 civilian and military jets, pisto ...

The Canadian Museum of Flight - L-6
Retrieved: 31 January 2009

Specifications (R-915A1)

References

Notes

Bibliography

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

External links

Bomber Command Museum of Canada - Nanton Lancaster Society
FAA Type Data Certificate Sheet - R-915
{{US military piston aeroengines 1930s aircraft piston engines Aircraft air-cooled radial piston engines Jacobs aircraft engines