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P&W R-1830 Twin Wasp Documents & Manuals


The Pratt & Whitney Wasp series are among the most important piston aero engine designs ever built. It was introduced in 1932 with an output of 750 hp, the final version produced 1,350 hp. A total of 173,618 R-1830 engines were built, a notable figure which makes it the most produced aircraft engine.

  • The R-1830 "Twin Wasp" was a two-row engine of 14 cylinders, each having a bore and stroke of 5 1/2". The R-1535 "Twin Wasp Junior" was also a two-row engine of 14 cylinders, but its bore and stroke was 5 3/16".
  • Reliability was a hallmark of Wasp series engines. They powered many of the WWII era aircraft and earned a wartime record of durability in extremes of climate, hostile fire and frequent abuse of the operating limits contained in the manual.
  • For most of the 1930s the R-1830 was the largest U.S. engine under development.

The Twin Wasp design began in 1931 under the guidance of legendary P & W engineer Luke Hobbs. This twin-row radial incorporated 14 cylinders in two rows of seven, mounted to a forged aluminum crankcase. Liberal amounts of magnesium were used in the design to save weight, and special attention was given to the engine mounts to reduce vibration.

Pratt & Whitney augmented its output of the engine by granting license production to Buick, Chevrolet and Commonwealth Aircraft in Australia.
The engine is still in regular service around the world, mostly with fleets of DC-3s, a tribute to the sound engineering design.

  • The P&W R-1830 radial engine powered numerous aircraft, including the Bristol Beaufort, Consolidated B-24 Liberator bomber, Douglas SBD Dauntless, Consolidated PBY (Canso/Catalina), Curtiss P-36 Hawk, Douglas C-47 Skytrain (DC-3), Seversky P-35, Douglas TBD Devastator, Grumman F4F-4 Wildcat, and the Short Sunderland V flying boat.
Enjoy viewing all of our rare aviation manuals and documents in our online archive.
These WWII manuals are part of our aviation history and will walk you through all systems and operations; They are an absolute must see.

Usage: AviationShoppe.com provides these items freely for historical and reference use.

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Pratt & Whitney R-1830 Radial Engine Service Instructions

Original 1945 Service Instructions Manual. Produced by Pratt & Whitney, the R-1830 was a two-row, 14-cylinder, air-cooled radial design. It displaced 1,830 in. This illustrated wartime manual will allow you a rare look into the amazing R-1830 Twin Wasp radial engine.

  View: WWII (1945) Pratt & Whitney R-1830 Twin Wasp Service Instructions Manual

Pratt & Whitney R-1830 Radial Engine Maintenance Manual (1946)

Pratt & Whitney maintenance manual for the R-1830 Twin Wasp radial engine. Packed with invaluable data including very detailed drawings and diagrams. By Pratt & Whitney's tenth anniversary, it was making engines that were making history. The Twin Wasp was the first twin-row design. It performed magnificently and was selected to power fighters, bombers and transports. A fascinating study into this remarkable radial engine.

  View: P&W R-1830 Twin Wasp Maintenance Manual (1946)

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