The Jacobs R-830 or L-5 is a seven-cylinder, air-cooled, radial engine for aircraft manufactured in the United States by the Jacobs Aircraft Engine Company, beginning in 1935.Gunston 1989, p.85.

Design and development The R-830 was effectively an enlargement of the R-755 with strengthened stressed parts. With a bore and stroke of 5.0 in × 5.5 in (140 mm × 127 mm) the displacement was 831 cu in (13.6 L), takeoff power was around 285 hp (212 kW). The engine features steel cylinders with aluminum-alloy cylinder heads.

Applications Beechcraft Model 18B & S18B Expeditor Beechcraft B17B and C17B Staggerwing Fleet 50J Freighter (prototype only) Fleetwings Sea Bird Howard DGA-9 Spartan 7X Executive (prototype only) Waco ZKC-S, ZKS-6 & 7 Standard Cabins Waco YOC-1 ZQC-6 ZGC-7 Custom Cabins Waco ZVN-8 Custom Cabin Waco ZPF-6 and ZPF-7

Specifications (L-5)

See also

References

Notes

Bibliography

Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989.

External links The Jacobs Engine - Nanton Lancaster Society