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Military


Tankette model 92 (1932)

Development of the tankette has been progressive. In China it was used on a wide scale by Japan in a cavalry and reconnaissance role. In addition it is employed for towing tracked trailers carrying supplies and ammunition. Both welded and riveted construction are used throughout the hull. The suspension is an early Japanese development. Four point suspension of the hull is achieved by use of bell cranks, resisted by armored compression springs on each side. Four rubber tired bogie wheels, two return rollers, and outside center guide tracks are used. Front sprocket drive and left rear mounted engine are employed.

Approximate specifications
Weight 3 tons.
Length 10 feet 3 inches
Width 5 feet 3 inches.
Height 5 feet 4 inches.
Clearance 131/2 inches.
Crew 2 men.
Armor 6 to 14 mm (0.24 to 0.55 inch).
Armament 1-7.7 MG ball mounted.
Ammunition 1,980 rounds.
Engine, 4 cylinder 32 horsepower, gasoline.
Transmission 4 forward, 1 reverse.
Ground contact 6 feet.
Width of track 5 inches.
Track pitch 3 inches.
Diam. sprocket 21 inches.
Diam. bogie wheel 15 inches.
Diam. rear idler 15 inches.
Height to center of sprocket 25 inches.
Approximate maximum performance
Speed 25 miles per hour.
Range of action 100 miles.
Gradient 27°.
Obstacles:  
      Trench 4 feet 6 inches wide.
      Step 2 feet 1 inch high.
      Ford 2 feet deep.

Light tank model 93 (1933)

This tank represents the early development of the light tank series. The box type hull is divided into three compartments. The center portion is the fighting compartment, the superstructure of which overhangs the tracks. The right hand side at the front of the fighting compartment is extended forward to form a sponson for the ball mounted machine gun. The driver sits left, while the hull gunner sits right, in the forward compartment. The 6 cylinder gasoline engine is mounted to the rear of the hull. The suspension consists of six small,rubber-tired bogie wheels mounted on three semi-elliptic springs on each side. There are three return rollers. Front sprocket drive and center guide track are employed. The turret mounts one machine gun to the front, while some photographs show another mounted in the rear. Traverse 360°.

Approximate specifications
Weight 7.8 tons.
Length 14 feet 8 inches.
Width 5 feet 11 inches.
Height 6 feet.
Clearance 15 inches.
Crew 3 men.
Armor Up to 22-mm (0.87 inch) (reported).
Armament 1 light mg (Hull), 1 light mg (turret).
Steering Clutch brake.
Ground contact 10 feet.
Engine 6 cylinder 85 horsepower Mitsubishi.
Cooling Air.
Width of track 71/2 inches.
Pitch of track 31/2 inches.
Diam. of sprocket 1 foot 6 inches.
Diam. of rear idler 1 foot 3 inches.
Height of sprocket center. 1 foot 8 inches.
Approximate maximum performance
Speed 28 miles per hour.
Obstacles:  
      Trench 5 feet 8 inches wide.
      Step 1 foot 6 inches high.
      Ford 2 feet 8 inches deep.

Light tank model 93 (1933) improved

Probably produced in 1933-34, this tank is an improved model of the M2593 in that the suspension has 4 bogie wheels coupled together in pairs via transverse even lever. It is not clear whether the apex is mounted to the hull by means of a bell crank or a stub shaft. Likewise it is not clear whether the armored compression spring is used at this stage of development. Two return rollers are used, as well as front sprocket drive. The hull of this vehicle is almost identical with that of the previous model.

Approximate specifications
Weight 7.8 tons.
Length 14 feet 8 inches.
Width 5 feet 11 inches.
Height 6 feet.
Clearance 15 inches.
Crew 3 men.
Armor up to 22-mm (0.87 inch) (reported).
Armament 1-37-mm tank gun, 1 turret machine gun.
Engine 6 cylinder,85 horsepower air-cooled (Mitsubishi).
Ground contact 9 feet 6 inches.
Width of track 71/2 inches.
Track pitch 31/2 inches.
Diam. bogie wheel 15 inches.
Steering Clutch brake.
Fuel Gasoline.
Approximate maximum performance
Speed 28 miles per hour.
Range of action 120 miles.
Obstacles:  
      Trench 5 feet 8 inches wide.
      Step 1 foot 6 inches high.
      Ford 2 feet 10 inches deep.





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