Year: 1928
Crew: 1
Max speed: 157 mph (252 km/h) at 5,000ft (1,525 m).
Gross weight: 3,082 Ib (1,398 kg).
Span: 30ft 1 in (9.16 m).
Length: 19ft 10 in (6.04m)
Height: 10ft 4in (3.10 m)
Engine: 420 hp Gnome-Rhone Jupiter IV9Ab or IV9Hk, or 450 hp IV9Ag
Armament: two fixed forward-firing 0.303 in (7.7 mm) machine guns
Year: 1934
Crew: 1
Max speed: 230 mph (370 km/h) at 15,800 ft (4,815 m).
Time to climb to 20,000ft (6,100 m), 9 min.
Service ceiling: 33,500 ft (10,210 m).
Empty weight: 2,770 Ib (1,255 kg).
Gross weight: 3,970 Ib (1,800 kg).
Span: 32ft 10 in (9.99 m).
Length: 26ft 2 in (8.0 m).
Engine: 605 hp Mercury VIS
Armament: two fixed forward-firing 0.303 in (7.7 mm) machine guns
Year: 1938
Crew: 1
Max speed: 257 mph (414 km/h) at 14,600 ft (4,449 m).
Time to 10,000 ft (3,050 m), 4.5 min.
Service ceiling: 33,500 ft (11,570 m).
Gross weight: 4,864 Ib (2,206kg).
Span: 32ft 3 in (9.80 m).
Length: 27ft 5 in (8.20 m).
Wing area: 323 sq ft (29.9 m2)
Engine: 825 hp Mercury VIIIA
Armament: two fixed forward-firing 0.303 in (7.7 mm) machine guns