The Lawrance L-3 and L-4 were early aircraft piston engines with three radial cylinders, designed and built by the Lawrance Aero Engine Company in the early 1920s. The L-3 / L-4 series were marketed by the Wright Aeronautical Corporation as the Wright Gale after the acquisition of the Lawrance company.
Applications Loening M-2 Naval Aircraft Factory SA Sikorsky S-33 Messenger
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This article contains material that originally came from the placard at the Steven F. Udvar-Hazy Center, with dimensional error corrected (radius reported as diameter).
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