Lawrance L-3

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