Tag Archive for '4.7cm'

Pz. Jäg. I für 4.7 cm Pak (t): S.P. Antitank Gun (Czech)

Pz. Jäg. I für 4.7 cm Pak (t): S.P. Antitank Gun (Czech)

This equipment, which is primarily a tank-hunter, was created by combining the 4.7 cm Czech antitank gun with the chassis of the Pz. Kpfw. I, Model B tank. Consequently its road performance approximates that of the Model B tank.

The turret arrangement consists of a three-sided welded shield, open at the top and rear, bolted to the superstructure by means of internal flanges. The driver’s seat is on the floor to the left rear of the gear box.

The fitting of the gun to the chassis is crude in many respects and not up to the usual standard of German workmanship or design. The gun is mounted on a steel frame, within the shield, in the front half of the vehicle. It is a single shot, high velocity weapon. The barrel is a one-piece forging fitted with a large and heavy muzzle brake and flash eliminator. The breech mechanism is of the vertical sliding block type. The gun is automatically cocked when the breech is opened. The elevating gear is on the left hand side of the gun and is controlled by an elevating wheel with a folding handle. The traversing gear is behind the elevating hand wheel. Traverse is limited by a spring-loaded stop to 15 deg. left or right. The recoil mechanism, which consists of a spring recuperator and liquid buffer, is housed in a cylindrical casing above the piece.

The gun utilizes the following types of ammunition—(1) A.P. tracer shell, (2) H.E. shell. At 300 yards the A.P. projectile effects a penetration of homogeneous armor of 2.3 ins. at 30 deg. obliquity; 3.0 ins. normal, and at 1000 yards will penetrate 1.8 in. at 30 deg. obliquity; 2.4 ins. normal.


Weight         8.4 tons
Length 14 ft., 6 ins.
Width 6 ft., 9 ins.
Height 7 ft.
Ground clearance 11 1/2 ins.
Tread centers 5 ft., 8 ins.
Ground contact 8 ft.
Width of track 11 ins.
Pitch of track 3 11/16 ins.
Track links 99
Fording depth 2 ft.
Theoretical radius of action
     Roads 87 miles
     Cross-country 72 miles
     Roads 26 m.p.h.
     Cross-country 15 m.p.h.
     Front plate 15 mm
     Sides 10 mm
     Shield 15 mm
Armament 4.7 cm. Pak (t)
     Muzzle velocity (AP) Wt. 3.6 lb.—2540 f.s.
(HE) 1300 f.s.
     Effective range (HE) 1520 yds.
     Overall length 187.5 ins.
     Traverse 30°
     Elevation 12°
Ammunition (rds.) 74
Engine 100 h.p. 6-cyl. Maybach Model NL 38 TR
Transmission 5 speeds forward, 1 reverse
Steering Clutch brake
Crew         3

German: p. 4