The XP-41 was a modification of the last P-35 built (S/N 36-430). The aircraft's center fuselage was redesigned and had a much lower profile "greenhouse" canopy similar to the early P-47's. (Seversky was renamed Republic Aviation in October 1939 after Alexander Seversky left the company.) The XP-41 also had an R-1830 radial engine with a flush-mounted turbo-supercharger mounted in the belly with an air inlet port just forward of the left wing root. Finally, the aircraft discarded the P-35 landing gear partial aft retraction scheme in favor of a fully retracting inward landing gear.
Last P-35; R-1830-19 with turbo
TECHNICAL NOTES: Armament: One .30-cal. and one .50-cal. machine gun Engine: Turbo-supercharged Pratt & Whitney R-1830-19 of 1,200 hp at take-off Maximum speed: 323 mph at 15,000 ft. Cruising speed: 292 mph Range: 730 miles (150 gal.)/1860 miles with drop tanks (230 gal.) Span: 36 ft. 0 in. Length: 27 ft. 0 in. Height: 12 ft. 6 in. Weight: 5,390 lbs. empty/6,600 lbs. gross