Steen Skybolt

The Skybolt is a two-seat aerobatic biplane designed by Lamar Steen, an aerospace teacher in Denver. It first flew in October 1970 and received the EAA award for “Best School Project.” The Skybolt is stressed to + 12G’s and -10G’s. The wings are built around two spruce spars and are fabric covered, with four ailerons. The fuselage is a fabric-covered welded steel-tube structure. The aircraft can be fitted with engines ranging in size from 125 to 260 hp.

Engine: 180-hp Lycoming
Gross Wt: 1680 lb
Empty Wt: 1080 lb
Fuel capacity: 30-40 USG
Wingspan: 24 ft
Length: 19 ft
Wing area: 155 sq.ft
Top speed: 145 mph
Cruise: 130 mph    
Stall mph: 50
Climb rate: 2500 fpm
Ceiling: 18,000 ft
Takeoff run: 400 ft
Range: 450 sm
Seats: 2

Engine: Lycoming IO-360-A1A, 200 hp
Vne: 170 kts.
Fuel cap: 110 lt + aux 37.85 lt.         

Engine: Lycoming IO-540-D4A5, 260 hp
Speed max: 180 mph
Cruise: 160 mph
Range: 450 sm
Stall: 60 mph
ROC: 3500 fpm
Take-off dist: 300 ft
Landing dist: 800 ft
Service ceiling: 18,500 ft
HP range: 125-260
Fuel cap: 38 USG
Weight empty: 1250 lbs
Gross: 1800 lbs
Height: 7.2 ft
Length: 19 ft
Wing span: 24 ft
Wing area: 152.7 sq.ft
Seats: 2
Landing gear: tail wheel