Tag Archive for 'PzKpfw II'

Pz. Jäg. II Aus D, E für 7.62 cm Pak 36 (Sd. Kfz. 131): S.P. Antitank Gun (Russian)

Pz. Jäg. II Aus D, E für 7.62 cm Pak 36 (Sd. Kfz. 131): S.P. Antitank Gun (Russian)

The Pz. Kpfw. II chassis embodying the suspension on four large bogie wheels has been used as a self-propelled mount for the German modified Russian gun 7.62 cm Pak 36 (r) as well as the Pz. Kpfw. II models utilizing five bogie wheels. These equipments are used in an antitank capacity.

The turret and superstructure of the original tank has been removed and replaced by a high box-like superstructure shield of approximately 15 mm thickness, sloping about 75° to the horizontal. Centrally located above the lower shield superstructure is a three-sided shield of approximately 10 mm thickness with a slotted front plate through which the long muzzle of the gun projects well over the front of the chassis. The original shield of the gun has been retained.

The gun, 163 1/2 inches in length including the muzzle brake, is of monobloc construction. The breech mechanism is of the falling-wedge type. The elevating gear is operated by a handwheel located on the left side of the gun; the traversing gear is on the right. The estimated elevation of the piece is -5° to +22°; traverse 65°. Its muzzle velocities are as follows: H.E. shell, 1805 f/s; A.P.C. shell, 2430 f/s. Firing A.P.C. shell this gun will defeat 3.2 inches of homogeneous armor of 30° obliquity at 1000 yards, and 4.1 inches at normal.

SPECIFICATIONS

Weight         10.5 tons
Length 16 ft. (excl. gun)
Width 7 ft., 6 ins.
Height 6 ft., 9 ins.
Ground clearance 12 ins.
Tread centers 5 ft., 10 ins.
Ground contact 7 ft., 10 ins.
Width of track
Track links 96 (est.)
Pitch of track
Fording depth 3 ft.
Theoretical radius of action
     Roads 115 miles
     Cross-country 75 miles
Speed
     Roads 28 m.p.h.
     Cross-country 12 m.p.h.
Armor
     Front plate 30 mm
     Sides 15 mm
     Shield 15 mm
Armament 7.62 cm Pak 36 (r)
Ammunition
Wt. of Projectiles
     A.P.C. 16.7 lb.
     H.E. 12.6 lb.
Engine Maybach, 140 B.H.P.
Transmission 5 speeds forward, 1 reverse
Steering Epicyclic clutch brake
Crew 4 (probably)

German: p. 12

Gw. II für 15 cm s.I.G. 33: S.P. Heavy Infantry Howitzer

Gw. II für 15 cm s.I.G. 33: S.P. Heavy Infantry Howitzer

This vehicle consists of the 15 cm. heavy infantry howitzer mounted in the hull of a modified, turretless Pz. Kpfw. II chassis. The chassis is approximately three feet longer than that of the standard Pz Kw II tank and has six bogie wheels instead of the usual five. The sprockets, rear idlers, bogie wheels, return rollers, steering assembly, gear box and hull nose are those of the Pz. Kpfw. II; the instrument panel is that of a Pz. Kpfw. III. The front shield is in one piece extending straight across the full width of the superstructure. The driver’s visor is of the double shutter type. The road performance of this equipment approximates that of the Pz. Kpfw. II tank.

The gun, a standard infantry support weapon, is mounted low in the hull, projecting through a vertical slot in the shield. The gun shield is 15 mm thick and is of shallow construction. It extends about a third of the distance of the superstructure to the rear. Unlike the “Wasp” there are no protecting side plates along the entire length of the superstructure.

The gun is 64.57 inches in length, has a muzzle velocity of 790 f.s. and a maximum effective range of 5140 yards. The casting containing the recuperator and buffer, housed underneath the barrel, extends almost to the end of the barrel. The breech mechanism is similar to the 10.5 cm. I.F.H. 18. The elevating qear is operated from the right and the traversing gear from the left. In field mounting its traverse is 11°, its elevation 0° to +73°.

Two types of ammunition are fired, the 15 cm. I. Gr. 33 and the 15 cm. I. Gr. 38. The H.E. capacity is high, 21.8%. The only other shell that the weapon is known to fire is a smoke shell, the 15 cm. I. Gr. 38 Nb. The same percussion fuze, s. I. Gr. Z. 23, which weighs 75 lbs., is used in each case.

SPECIFICATIONS

Weight         (approx.) 12 tons
Length (approx.) 18 ft.
Width 7 ft., 4 ins.
Height (approx.) 5 ft., 6 ins.
Ground clearance 13 ins.
Tread centers 6 ft., 2 ins.
Ground contact
Width of track 11 1/8 ins.
Pitch of track 3 5/8 ins.
Track links
Fording depth 3 ft.
Theoretical radius of action
     Roads 118 miles
     Cross-country 78 miles
Speed
     Roads 25 m.p.h.
     Cross-country 15 m.p.h.
Armor
     Front plate 15 + 20 mm
     Sides 15 mm
Gun shield 15 mm
Armament 15 cm. s.I.G. 33
Ammunition (rds.)
Engine 140 B.H.P. Maybach, HL 62 TRM
Transmission 6 forward speeds, 1 reverse
Steering Epicyclic clutch brake
Crew Probably 4

German: p. 13

Gw. II (Wespe) für 10.5 cm le. F. H. 18/2 (Sd. Kfz. 124): S.P. Light Howitzer (Wasp)

Gw. II (Wespe) für 10.5 cm le. F. H. 18/2 (Sd. Kfz. 124): S.P. Light Howitzer (Wasp)

This equipment, known as the “Wasp,” consists of the 10.5 cm. light field howitzer mounted on a chassis which, with the exception that there are only three return rollers, is that of a normal Pz. Kpfw. II tank, Models A-C, with five bogie wheels. Its road performance approximates that of the Pz. Kpfw. II tank.

The gun is the 10.5 cm. 1.F.H. 18 M with muzzle brake. It is mounted at the rear of the chassis within an open top box type shield which is 10 mm thick, its muzzle brake being almost flush with the front of the chassis. Its recuperator and buffer mechanisms, mounted on the bottom and top of the barrel, respectively, are clearly visible beyond the shield. Overlapping the gun shield and sloping back to the rear of the superstructure are side plates, also 10 mm thick. The fighting compartment is open at the top and rear. Its silhouette is high.

The piece has a normal-charge muzzle velocity of 1542 f.s. and a maximum range of 11,650 yards. Firing the long range charge (Fern-ladung) the gun has a muzzle velocity of 1772 f.s. and a maximum range of 13,500 yards. All charges, except the long range, can be fired without the muzzle brake. It has a traverse of 32° and an elevation of -5° to +42°. It is reported to fire four types of ammunition, the 32.6 lb. HE (F. H. Gr.—Feldhaubitze Granate—field howitzer shell), the cast steel HE (F. H. Gr. Stg.—Stahlring—steelring), the 25.9 lb. hollow charge (10 cm. Gr. 39 rot Rohl Ladung—red hollow charge), and a 32.5 lb. smoke shell.

SPECIFICATIONS

Weight         12 tons
Length 15 ft., 9 ins.
Width 7 ft., 4 ins.
Height 7 ft., 10 1/2 ins.
Ground clearance 13 ins.
Tread centers 6 ft., 2 ins.
Ground contact 7 ft., 10 ins.
Width of track 11 1/8 ins.
Pitch of track 3 5/8 ins.
Track links
Fording depth 3 ft.
Theoretical radius of action
     Roads 125 miles
     Cross-country 70 miles
Speed
     Roads 24 m.p.h.
     Cross-country
Armor
     Front plate
     Sides
Armament 10.5 cm. l.F.H. 18 (M)
Ammunition (rds.)
Engine Maybach HL 62 TR, 140 h.p.
Transmission 6 speeds forward, 1 reverse
Steering Epicyclic clutch brake
Crew

German: p. 14

Pz. Kpfw. II Aus. F (Sd. Kfz. 121): Light Tanks

Pz. Kpfw. II Ausf. F (Sd. Kfz. 121): Light Tanks

Produced in 1941. This is the latest type of Pz. Kpfw. II tank identified in action. The major modifications appearing in this model are (1) increased thickness of the basic frontal armor, (2) new design of hull nose, (3) use of uninterrupted length of plate for front vertical superstructure plate, (4) use of dummy visor mounted alongside the driver’s visor.

The single skin nose of the Model F hull is constructed, of flat plates 35 mm thick with a Brinell hardness of 426 and is nearer vertical than the superimposed nose plate in the earlier reinforced models. This modification to the nose of the hull has shortened its length by approximately five inches.

The turret front and mantlet remain unaltered except for the omission of the additional plates and a corresponding thickening of the basic armor to 30 mm.

Model F is equipped with a new driver’s visor of the double shutter type. A dummy visor, a one-piece aluminum casting, is mounted alongside the driver’s visor on the right, presumably to draw fire from the latter.

The suspension arrangement of five bogie wheels and four return rollers is the same as that utilized in the previous models A, B and C.

The power plant consists of the HL 62 TR Maybach, a 6-cylinder, water-cooled gasoline engine rating 140 B.H.P. at 2600 r.p.m.

The transmission is of normal synchromesh, manual control type, providing six forward speeds and one reverse, and the steering system utilizes the epicyclic clutch and brake principle.

Armament comprises one 2.0 cm KwK 30 gun with coaxial 7.92 M.G. 34 in turret.

Models G and J have been mentioned in an official German document but there are no details available.

SPECIFICATIONS

Weight         10.5 tons
Length 14 ft., 9 ins.
Width 7 ft., 4 ins.
Height 6 ft., 6 ins.
Ground clearance 13 ins.
Tread centers 6 ft., 2 ins.
Ground contact 7 ft., 10 ins.
Width of track 11 1/8 ins.
Pitch of track 3 5/8 ins.
Track links 106
Fording depth 3 ft.
Theoretical radius of action
     Roads 125 miles
     Cross-country 85 miles
Speed
     Roads 30 m.p.h.
     Cross-country 15 m.p.h.
Armor
     Front plate 35 mm
     Sides 20 mm
Armament One 2.0 cm KwK 30
One 7.92 mm M.G. 34
Ammunition (rds.) 2 cm gun 180
M.G. 2550
Engine 140 B.H.P. Maybach HL 62 TRM
Transmission 6 forward speeds, 1 reverse
Steering Epicyclic clutch brake
Crew 3

German: p. 10

Pz. Kpfw. II (F) (Sd. Kfz. 122): Flamethrower Tank

Pz. Kpfw. II (F) (Sd. Kfz. 122): Flamethrower Tank

The flamethrower tank, Pz. Kpfw. II (F) is a conversion of Pz. Kpfw. II, Models D and E, which employed the four bogie wheel suspension, and should not be confused with the Model F, which utilizes the five bogie wheel type of suspension. The road performance of the flamethrower tank approximates that of Models D and E.

The flamethrower projectors, having a range of about 35 yards, are mounted in small turrets set well forward on each trackguard. The turrets have 180° traverse while the projectors themselves have a limited elevation. Fuel is supplied from two tanks, provided with armored shields, which are mounted externally on the trackguards, and by compressed nitrogen from the four nitrogen cylinders located inside, below the turret. The tanks have a capacity of 35 gals. each. Two small cylinders mounted just behind the projector turrets contain acetylene, which is used for fuel ignition. The flamethrower is controlled electrically from panels in the turret.

Since this equipment is essentially a close-combat weapon, the tank is liberally fitted for smoke production to screen its movements. Not only is the normal smoke generator rack fitted at the rear, but there is on each trackguard a triple smoke generator discharger, aimed to fire forward, and bowden cable controlled from the turret. Armament also includes a machine gun on a ball mounting in the turret.

SPECIFICATIONS

Weight         11 tons
Length 16 ft.
Width 7 ft., 6 ins.
Height 6 ft., 9 ins.
Ground clearance 12 ins.
Tread centers 5 ft., 10 ins.
Ground contact 7 ft., 10 ins.
Width of track 11 1/8 ins.
Pitch of track 6 3/4 ins.
Track links 55
Fording depth 3 ft.
Theoretical radius of action
     Roads 125 miles
     Cross-country 85 miles
Speed
     Roads 30 m.p.h.
     Cross-country 12 m.p.h.
Armor
     Front plate 30 mm
     Sides 15 mm
Armament Two independent flamethrowers
One M.G.
Ammunition Flamethrower—70 gals.
M.G. 1800 rds.
Engine 140 B.H.P. Maybach, HL 62 TRM
Transmission 6 speeds forward, 1 reverse
Steering Epicyclic clutch brake
Crew 3

German: p. 9

Pz. Kpfw. II Aus D, E (Sd. Kfz. 121): Light Tanks

Pz. Kpfw. II Ausf D, E (Sd. Kfz. 121): Light Tanks

Produced in 1939. Comparatively few of these models were made and these were later converted to flamethrower tanks (Pz. Kpfw. II, Aus. (F)).

Model D—Although the hull, turret, and superstructure of this model are similar to preceding models, its suspension arrangement of four large, rubber-tired, Christie-type bogie wheels which touch the top and bottom of the track make it easy to recognize. Models D and E are the only Pz. Kpfw. II tanks with this type of suspension. The bogie wheels are large enough to eliminate return rollers. The front drive sprocket, rear idler, and the dry-pin, center-guide track complete the suspension assembly. The track can be fitted with snow spuds. These are inserted in the outer web members and held by a split cotter-pin.

The power plant is the Maybach HL 62 TR, six-cylinder, water-cooled engine rated at 140 B.H.P. The transmission provides five forward speeds and one reverse. The steering system embodies the epicyclic clutch and brake principle.

The normal Pz. Kpfw. II armament of one 2 cm Kw.K. 30 with one coaxial 7.92 mm M.G. 34 is mounted. Armor plate thicknesses range from 30 mm front to 15 mm sides.

Model E—Same as Model D.

SPECIFICATIONS

Weight         10 tons
Length 16 ft.
Width 7 ft., 6 ins.
Height 6 ft., 9 ins.
Ground clearance 12 ins.
Tread centers 5 ft., 10 ins.
Ground contact 7 ft., 10 ins.
Width of track
Pitch of track
Track links 96 (est.)
Fording depth 3 ft.
Theoretical radius of action
     Roads 125 miles
     Cross-country 85 miles
Speed
     Roads 30 m.p.h.
     Cross-country 12 m.p.h.
Armor
     Front plate 30 mm
     Sides 15 mm
Armament 1—2.0 cm Kw.K. 30
1—7.92 M.G. 34
Ammunition
Engine Maybach 140 B.H.P.
Transmission Synchromesh, 5 speeds forward, 1 reverse
Steering Epicyclic clutch brake
Crew 3

German: p. 8

Pz. Kpfw. II Aus A, B, C (Sd. Kfz. 121): Light Tanks

Pz. Kpfw. II Aus A, B, C (Sd. Kfz. 121): Light Tanks

Model A was produced in 1937, followed by B and C in 1938. It is not known whether there are any important differences between these models. All had a suspension consisting of five equally spaced rubber-tired bogie wheels on each side mounted independently on suspension arms pivoted on hull and provided with quarter elliptic leaf springs. There are four 8½ in. diameter return rollers on each side, a 2 ft., 7 in. diameter sprocket, and a 2 ft., 1 in. diameter idler.

The frontal armor of this series was originally only 15 mm thick and the hull had a rounded nose formed by the bending of a single plate which also incorporated the glacis and nose plate. At some time after the battle of France (1940) the armor of these models was reinforced by bolting 20 mm armor plates on the front of the tank. The additional armor on the front of the hull consisted of flat nose and glacis plates which entirely altered the appearance of the hull and nose and gave the effect of spaced armor in front of the rounded part of the basic plate. The gun mantlet armor was thickened by the addition of a 15 mm plate.

The Maybach, HL 62 TR, 6-cylinder gasoline engine, which comprises the power plant, has a rating of 140 h.p.

The armament consists of a 2.0 cm gun which is fired by a trigger on the elevating handwheel, and a coaxial 7.92 mm M.G. 34 which is fired by a trigger on the traversing handwheel.

These models are often converted for use as mounts for heavy anti-tank guns such as the 7.5 cm Pak 40 and the 7.62 cm Pak 36 (r), as well as the 10.5 cm l.F.H. 18 M, known as the Wasp, and the 15 cm s.I.G. 33; the suspension for the latter having a sixth bogie wheel.

SPECIFICATIONS

Weight         10 tons
Length 15 ft., 2 3/4 ins.
Width (overall) 7 ft., 4 ins.
Height 6 ft., 5 3/4 ins.
Ground clearance 13 ins.
Tread centers 6 ft., 2 ins.
Ground contact 7 ft., 10 ins.
Width of track 11 1/8 ins.
Pitch of track 3 5/8 ins.
Track links 105
Fording depth 3 ft.
Theoretical radius of action
     Roads 125 miles
     Cross-country 85 miles
Speed
     Roads 30 m.p.h.
     Cross-country 15 m.p.h.
Armor
     Front plate 15 + 20 mm
     Sides 15 mm
Armament One 2.0 cm KwK 30
One 7.92 mm M.G. 34
Ammunition 2.0 cm gun 180
M.G. 1425
Engine 140 h.p. Maybach HL 62 TRM
Transmission Crash-type gear box, 6 fwd. speeds, 1 reverse
Steering Epicyclic clutch brake
Crew 3

German: p. 7

Pz. Kpfw. II Aus a1, a2, a3, b, c: Light Tanks

Pz. Kpfw. II Ausf a1, a2, a3, b, c: Light Tanks

The early development of the Pz. Kpfw. II is indicated by five models, a1, a2, a3, b and c. They were considered as prototype tanks.

Model a1—Had a suspension arrangement of six small bogie wheels, each side mounted on three hull pivots connected by an outside girder. There were four return rollers, sprocket, and a cast rear idler. It weighed about 8.4 tons, was manned by a crew of three and mounted one 2 cm KwK 30 and a coaxial 7.92 mm M.G. 34 in the turret. It was powered by a six-cylinder Maybach (HL 57 TR) gasoline engine and was fitted with epicyclic and brake steering without a final reduction gear. The frontal armor was 20 mm in thickness, the sides 15 mm.

Model a2—Same as Model a1 except for variation in construction of engine compartment and welded rear idler instead of cast.

Model a3—Same as Model a1 except for minor modifications in the suspension arrangement and cooling system.

Model b—Incorporated an improved Maybach (HL 62 TR) engine, as well as a new track with wider driving sprockets, bogie wheels and return rollers. A final reduction gear was also introduced, which necessitated slight alterations in the structure of the front of the hull. The model weighed 9 tons.

Model c—An entirely new suspension comprising five independently sprung bogie wheels on each side made its appearance in this model. It is believed that the torsion bar system of bogie wheel suspension originated in this tank. Modifications to the driving sprocket, rear idler, and return rollers, the latter of which now numbered four, were made. Improved epicyclic and steering brakes were also introduced, the latter being equipped with automatic take-up to compensate for wear. Model c weighed 9 1/2 tons.

SPECIFICATIONS

Weight         8 1/2 to 9 1/2 tons
Length 15 ft., 2 ins.
Width 7 ft., 4 ins.
Height 6 ft., 5 ins.
Ground clearance 13 ins.
Tread centers 6 ft., 2 ins.
Ground contact 7 ft., 10 ins.
Width of track 11 1/8 ins.
Pitch of rack 3 5/8 ins.
Track links 106
Fording depth 3 ft.
Theoretical radius of action
     Roads 102 miles
     Cross-country 60 miles
Speed
     Roads 30 m.p.h.
     Cross-country 15 m.p.h.
Armor
     Front plate 20 mm
     Sides 15 mm
Armament One 2 cm KwK 30
One M.G. 34
Ammunition (rds.) 2 cm gun 180
M.G. 2550
Engine HL 57 TR or HL TRM 62
Maybach 140 B.H.P.
Transmission 6 speeds forward, 1 reverse
Steering Epicyclic clutch brake
Crew 3

German: p. 6

Pz. Jäg. II Aus. A-E u.F für 7.5 cm Pak 40 (Sd. Kfz. 131): S.P. Antitank Gun

Pz. Jäg. II Aus. A-E u.F für 7.5 cm Pak 40 (Sd. Kfz. 131): S.P. Antitank Gun: Marder II

Produced in 1942. This antitank equipment was encountered in the battle of Tunisia. It is composed of the 7.5 cm antitank gun mounted on a Pz. Kpfw. II chassis and its road performance will closely follow that of the Pz. Kpfw. II tank.

The gun, which retains its original shield, recoil system, traversing and elevating gears, is mounted on a platform high on the hull and fires forward. A protective shield 10 mm thick, which slopes away to the rear of the chassis, has been provided. The shield is nearly rectangular except for a projecting portion in front of the gun mounting itself and the top and back are apparently open. The traverse of the gun is limited due to the gun shield fouling the protective shield. A barrel support for travelling is fitted in front of the hull.

The piece, 134 inches in length, is a monobloc type, semi-automatic, with horizontal sliding breech. It consists of barrel with shoes; breech ring with locking ring; breech block with firing mechanism; semi-automatic gear and muzzle brake. The recoil mechanism is comprised of a buffer cylinder, filled with a mixture of glycerine and distilled water, mounted in the cradle and secured by a nut to the front end plate. The piston rod, which is connected to the gun lug, is hollow, and is fitted with a bronze piston head. Ports are drilled in the conical part of the piston. A tapered rod is screwed into the front plug of the cylinder and projects into the hollow piston rod. During recoil the piston moves to the rear and the oil is forced from the buffer cylinder through the ports in the piston and hence through the annular space between the tapered rod and a bushing fitted in the piston. Recoil control is effected by a brass control plunger screwed to the end of the tapered rod. The recuperator is hydro-pneumatic.

SPECIFICATIONS

Weight         10 tons

Length 15 ft., 2¾ ins.
Width 7 ft., 4 ins.
Height 6 ft., 5¾ ins.
Ground clearance 13 ins.
Tread centers 6 ft., 2 ins.
Ground contact 7 ft., 10 ins.
Width of track 11 1/8 ins.
Pitch of track 3 5/8 ins.
Track links 105
Fording depth 3 ft.
Theoretical radius of action
   Roads 118 miles
   Cross-country 78 miles
Speed
   Roads 25 m.p.h.
   Cross-country 12 m.p.h.
Armor
   Front plate 15 + 20 mm
   Sides 15 mm
Armament 7.5 cm Pak 40 A.T. gun
   Max. effective range 3200 yards
   M.V. (Wt. 12.6 lb.) H.E. 1800 f.s.
   M.V. (Wt. 15 lb.) A.P.C. 2525 f.s.
   Elevation -5° to +22°
   Traverse 65°

    Penetration of homogeneous
armor—A.P.C.B.C. shell
  30° Normal
500 yds.         4.0″         4.8″
1000 yds. 3.6″ 4.3″
1500 yds. 3.2″ 3.9″
2000 yds. 2.8″ 3.4″
2500 yds.         2.5″         3.0″
Ammunition
Engine Maybach HL 62 TRM, 140 h.p.
Transmission Crash-type gear box, 6 fwd. speeds, 1 reverse
Steering Epicyclic clutch brake
Crew Probably 4

German: p. 11