The P-3 Hawk was similar to the P-1 Hawk but with a radial R-1340-3 Wasp radial engine. The first of the type, designated XP-3A, was the last P-1A (serial 26-300). Originally intended to be powered by a 390 hp (291 kW) Curtiss R-1454, the engine was deemed unsatisfactory and the 410 hp (306 kW) Pratt & Whitney R-1340 engine substituted. A second XP-3A (serial 28-189) included a cowling and spinner to reduce the drag due to the radial engine; entered in the National Air Races of 1929, its speed of 186.84 mph (300.69 km/h) gave it second place in the Thompson Trophy race.
J-Bar Item 67300
Olimp Item R72024