Sturmgeschütz lg. 7.5 cm Stu. K. (Sd. Kfz. 142): S.P. Assault Gun

Sturmgeschütz lg. 7.5 cm Stu. K. (Sd. Kfz. 142): S.P. Assault Gun

This version of the Sturmgeschütz is similar to its predecessor, the Stu. G. 7.5 cm K., except for its armament. The 7.5 cm Kw.K. short gun which appeared in the original Sturmgeschutz was replaced by the 7.5 cm Stu. G. lg. K., 87 inches long as shown above. The arrangement of the recoil mechanism also differs, the long version having what appears to be the original mounting provided for the Kw.K. 40 and is evidently a forerunner in its design and development. Photographs show the 7.5 cm Stu. G. lg. K. to be equipped at times with a muzzle brake. The front superstructure has been modified to accommodate the improved armament.

This vehicle is made up of the Pz. Kpfw. III tank chassis and an early development of the 7.5 cm Pak 40, and includes the hull and superstructure improvements made at this time on the original Sturmgeschütz. A roof was added, a commander’s cupola, smoke pot projectors and heavier front plate. The piece represents the trend in design from the short barrel 7.5 cm Kw.K. to the Stu. K. 40.


Weight         21 tons
Length         17 ft., 9 ins.
Width 9 ft., 7 ins.
Height 6 ft., 5 ins.
Ground clearance 15 ins.
Tread centers 8 ft., 2 1/2 ins.
Ground contact 9 ft., 4 1/2 ins.
Width of track 15 ins.
Pitch of track 4 3/4 ins.
Track links 90
Fording depth 3 ft.
Theoretical radius of action
     Roads 100 miles
     Cross-country 60 miles
     Roads 25 m.p.h.
     Cross-country 15 m.p.h.
     Front plate 50 mm
     Sides 30 mm
Armament 7.5 cm lg. Kw.K.
Ammunition 84 rds.
Engine Maybach HL 120 TRM, 320 hp.
Transmission 6 speeds forward, 1 reverse
Steering Epicyclic clutch brake
Crew 4

German: p. 27

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