Main Menu

Stearman 4 / Speedmail / Bull Stearman

stearman4dm
4DM Senior Speedmail


The Stearman 4E was introduced in 1930 as a mail plane. This aircraft was known as the Bull Stearman and was still in ag use until the late 1960s.

Powered by a 300-horsepower Wright R-975 engine, the Stearman 4DM Senior Speedmail was designed to haul mail and cargo. The 38-foot wingspan DM was larger than the standard Stearman, and was the last mail-carrying Stearman built. Only two examples were made.

 

Stear-4CM
Stearman 4CM-1 NC489W s/n 4037

 

4C
Engine: Wright J6-9, 300hp
Length: 26 ft 11 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower: 28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2256 lb
Max weight: 3800 lb    
Useful load: 1544 lb
Payload: 663 lb
Fuel capacity: 106 USG  
Oil cap: 10 USG    
Ceiling: 15,000 ft   
Range: 720 sm
Max speed: 145 mph
Price: US$12,500

4CM
Engine: Wright J6-9, 300hp
Length: 26 ft 11 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower: 28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2285 lb
Max weight: 3936 lb
Useful load: 1651 lb
Payload: 770 lb
Fuel capacity: 106 USG  
Oil cap: 10 USG    
Ceiling: 14,800 ft   
Range: 750 sm
Max speed: 147 mph
Price: US$12,500

4CM-1
Engine: Wright J6-9, 300hp
Length: 26 ft 11 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower:    28 ft   
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2540 lb
Max weight: 4067 lb    
Useful load: 1527 lb
Payload: 770 lb
Fuel capacity: 84 USG  
Oil cap: 8 USG
Ceiling: 14,500 ft   
Range: 600 sm    
Max speed: 147 mph
Price: US$15,000

4D
Engine: Pratt & Whitney Wasp Jnr, 300hp
Length: 26 ft 11 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower:    28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2297 lb
Max weight: 3800 lb
Useful load: 1503 lb
Payload: 622 lb
Fuel capacity: 106 USG  
Oil cap: 10 USG    
Ceiling: 15,000 ft   
Range: 720 sm
Max speed: 145 mph
Price: US$12,500

4DX
Engine: Pratt & Whitney Wasp Jnr S1A, 400hp
Length: 26 ft 11 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower:    28 ft  
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2297 lb
Max weight: 3800 lb
Useful load: 1503 lb
Payload: 622 lb
Fuel capacity: 106 USG  
Oil cap: 10 USG    
Ceiling: 15,000 ft   
Range: 720 sm    
Max speed: 145 mph
Price: US$12,500

4DM
Engine: Pratt & Whitney Wasp Jnr, 300hp
Length: 26 ft 11 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower:    28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2326 lb
Max weight: 3936 lb    
Useful load: 1610 lb
Payload: 729 lb
Fuel capacity: 106 USG  
Oil cap: 10 USG    
Ceiling: 14,800 ft   
Range: 750 sm    
Max speed: 147 mph
Price: US$15,000

4DM-1
Engine: Pratt & Whitney Wasp Jnr, 300hp
Length: 26 ft 11 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower:    28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2326 lb
Max weight: 3936 lb    
Useful load: 1610 lb
Payload: 729 lb
Fuel capacity: 106 USG  
Oil cap: 10 USG    
Ceiling: 14,800 ft   
Range: 750 sm    
Max speed: 147 mph
Price: US$15,000

4E
Engine: Pratt & Whitney Wasp C1, 420hp or Wasp SC-1, 450 hp
Length: 26 ft 4 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower:    28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2426 lb    
Max weight: 3936 lb    
Useful load: 1510 lb
Payload: 629 lb
Fuel capacity: 106 USG
Oil cap: 10 USG    
Ceiling: 18,000 ft
Range: 580 sm    
Max speed: 158 mph    
Price: US$16,000

4EM
Engine: Pratt & Whitney Wasp, 420-450hp
Length: 26 ft 4 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower:    28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Empty weight: 2455 lb
Max weight: 3936 lb
Useful load: 1481 lb
Payload: 600 lb
Fuel capacity: 106 USG  
Oil cap: 10 USG    
Ceiling: 18,000 ft   
Range: 600 sm
Max speed: 160 mph
Price: US$16,000

4EX Special
Engine: Pratt & Whitney Wasp SC-1, 450hp
Length: 26 ft 4 in
Height: 10 ft 2 in
Wing span upper: 38 ft
Wingspan lower: 28 ft
Chord Upper: 66 in
Chord lower: 51 in
Wing area: 307 sq.ft.
Airfoil: Goettingen 436
Max weight: 3936 lb    
Fuel capacity: 106 USG
Oil cap: 10 USG    
Ceiling: 18,000 ft
Range: 580 sm    
Max speed: 158 mph

 

 


Copyright © 2017 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.