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Japanese

13-Ton Prime Mover Model 95A (1935)

13-Ton Prime Mover Model 95A (1935) - Japanese, World War II

This vehicle is powered by a 6-cylinder, in-line, water-cooled gasoline engine with a cylinder bore of 135 mm and piston stroke of 150 mm and a compression ratio of 5.1:1. Normal horsepower is 130 at 1,300 r.p.m.; maximum horsepower, 160 at 1,900 r.p.m. The firing order is 1-5-3-6-2-4. Ignition for the vehicle is distributed by a high-tension type magneto. The electrical system includes charging generator; two 12-v., 80 amp.-hr. batteries, and a 24-v. electric starting motor of 8-hp. capacity.

The final drive has a reduction ratio of 2.93:1. A dry multiple plate clutch is used. Both foot- and hand-operated brakes are employed and the vehicle is steered by the clutch brake principle and is said to utilize a locking feature of the control brakes. The transmission is of the synchromesh type with 4 speeds forward and 1 reverse.

Lubricating oil is distributed by gear-type force-feed system through an oil-pressure regulator. The oil-pressure gage registers 29-44 lb. and an oil-level stick is used for checking the crankcase, which has a capacity of 5 3/4 gals. It has been stated that the fuel feed equipment includes a fuel pump between the carburetor and storage tank and that the heavy-duty type of fuel is forced fed to a NIPPON B 45 model carburetor.

There are two models of fuel storage tanks manufactured for this vehicle—one is the Mitsubishi type with main tank holding 70 gals. and an auxiliary holding 43 gals., and the other is the NIIGATA type main tank holding 50 gals. and an auxiliary tank holding 38 gals. Fuel consumption is stated to be 7.5 gals. per hour. The radiator holds 11 gals., circulated by a pump to the engine block. The grade-ascending ability of this prime mover is quoted as 14 tons up a 15° incline, or 32 tons on a 7 1/2° incline. The winch capacity is 11 tons.

SPECIFICATIONS

Weight        14.3 tons
Trailer load capacity 32 tons
Winch capacity 11.25 tons
Length 16 ft.
Width 7 ft., 6 ins.
Height 9 ft., 3 ins.
Ground clearance 1 ft.
Tread centers 5 ft., 11 ins.
Ground contact 9 ft., 9 ins.
Track width 16 1/2 ins.
Track links
Fuel tank Main, 70 gals.; aux., 43 gals.
Fuel consumption .83 m.p.g.
Fording depth
Speed 6.2 m.p.h.
Engine 6-cyl., water-cooled, gasoline
Bore and stroke 135 mm x 150 mm—5.31 ins. x 5.91 ins.
Horsepower 130 at 1,300 r.p.m.
Ignition High-tension magneto
Battery 2 12-v., 80 amp.
Transmission Synchromesh; 4 speeds forward, 1 reverse
Steering Clutch brake
Crew

Japanese: p. 17 (May 1, 1945)

Categories
Japanese

5-Ton Prime Mover Model 92A (1932)

5-Ton Prime Mover Model 92A (1932): Japanese

It is reported that there are two variations of this vehicle. Model A is powered by a 6-cylinder in-line L-head Sumida gasoline engine, and Model B by a 6-cylinder in-line air-cooled Isuzu Diesel. As far as may be ascertained, with exception of a modification in radiator design, the general appearance and suspension of these two models is similar.

The Model A engine is an L-head type with the valves on the side. The cylinder bore is 110-mm, the stroke 135 mm, and the compression ratio is 4.5:1. The normal hp. is 64 at 1,200 r.p.m.; the maximum hp. is 98. Ignition is provided by a Bosch high-tension magneto with 12-v. charging generator and two 12-v. 60 amp.-hr. vibration-proof batteries. The electric starting motor is 12-v. with a rating of 2.5 hp. Bevel spur pinion and ring gears have reduction ratios of 2.66 and 5.

The steering system is the clutch brake type with both hand and foot-operated brakes. The transmission provides four speeds forward and one reverse. The maximum speed is 19 k.p.h. (11.8 m.p.h.). The lubricating oil is distributed by gear pump force-feed system. Oil pressure registers 1.0 kg. (2.2 lb.) at low speed and 2 kg. (4.4 lb.) at 1,100 r.pm. The oil capacity measures 14.65 liters (3.7 gal.). A vacuum fuel system is used with Stromberg UT 4 model carburetor. The main fuel storage tank holds 125 liters (32 gal.), the auxiliary tank 55 liters (14.5 gal.). Fuel consumption is 17 liters (4.5 gal.) per hour, or 1.05 liters per km. (2.4 mi./gal.). The cooling liquid is circulated by a centrifugal pump from a radiator, which carries 39.5 liters (10.4 gal.). The grade ability of this vehicle pulling a fixed weight is 30°. The winch capacity is 2.5 metric tons (2.8 tons). The winch cable length is 20 meters (65 1/2 ft.).

SPECIFICATIONS

Weight        4.8 Metric tons—5.28 tons
Trailer load capacity 4.5 Metric tons—4.9 tons
Winch capacity 2.5 Metric tons—2.75 tons
Length 3.55 m—11 ft., 8 ins.
Width 1.71 m—5 ft., 11 ins.
Height 2.35 m—7 ft., 8 ins.
Ground clearance .295 m—11.75 ins.
Tread centers 5 ft., 11 1/2 ins.
Ground contact 7 ft., 4 1/2 ins.
Track width 9 7/8 ins.
Track links 59
Fuel tank Main, 32 gals.; aux., 14.5 gals.
Fuel consumption 2.4 m.p.g.
Fording depth 24 ins.
Speed
   Hard roads 18 m.p.h.
   Cross-country 8 m.p.h.
Engine Sumida, 6-cyl., gasoline
Bore and stroke 110 mm x 135 mm—4.33 ins. x 5.31 ins.
Horsepower 64 at 1,200 r.p.m. (normal)
Ignition Bosch high-tension magneto
Battery 2 12-v., 60 amp.-hr.
Transmission 4 speeds forward. 1 reverse
Steering Clutch brake
Crew 6

Japanese: p. 12 (April 1, 1945)

Categories
Japanese

4-Ton Prime Mover Model 94 (1934)

4-Ton Prime Mover Model 94 (1934) - Japanese WWII

The 4-ton Prime Mover is powered by a 90°, V-8 air-cooled gasoline engine with a cylinder bore of 90 mm and a piston stroke of 125 mm. The normal horsepower is 73 at 1,600 r.p.m.; maximum horsepower is 88. The firing order is 1-8-7-3-6-5-4-2. The electrical system includes a Bosch type magneto (Gesal model); a Bosch R.T.C. 900 LI model, 75-watt generator; a 12-v., 80 amp.-hr. storage battery, and a Bosch 2.5 hp. electric starting motor. The ratio of the final drive is 5.657:1. Clutch brake steering is used and both hand and foot operation applies the brakes. The transmission is the central selector type with 4 speeds forward and 1 reverse.

The vehicle is capable of towing its complement of artillery at 25 m.p.h. There is a main and auxiliary type of lubricating oil pump. Oil pressure is 4.4 to 6.6 lb. of gage pressure when warmed up. A Stromberg UR Z model carburetor is used. The main fuel storage tank has a capacity of 26.6 gals. In addition, there is an auxiliary tank having a capacity of 15.8 gals. A Sirocco type fan provides circulation for the air-cooled engine. A dry two-plate clutch is used. The grade-ascending ability is said to be 30° under the towing load. This vehicle can pivot turn. The winch capacity is 2.2 tons. The theoretical radius of action is 125 miles in 10 hours.

SPECIFICATIONS

Weight        4 tons
Trailer load capacity
Winch capacity over 2 tons
Length 12 ft., 5 ins.
Width 6 ft., 1 in.
Height 7 ft., 3 ins.
Ground clearance 11.5 ins.
Tread centers 5 ft., 4 ins.
Ground contact 7 ft., 8 ins.
Track width 10 ins.
Track links 5 1/2 ins.
Fuel tank Main, 26.6 gals.; aux., 15.8 gals.
Fuel consumption
Fording depth 20 ins.
Speed 25 m.p.h.
Engine V-8 cyl., air-cooled, gasoline
Bore and stroke 90 mm x 125 mm—3.54 ins. x 4.92 ins.
Horsepower 88 (max.)
Ignition Magneto
Battery 12 v., 80 amp.-hr.
Transmission Selector type; 4 speeds forward, 1 reverse
Steering Clutch brake
Crew 6

Japanese: p. 11 (April 1, 1945)

Categories
Japanese

Armored Tracked Personnel Carrier

Armored-tracked Personnel Carrier: Type 1 Ho-Ki

This vehicle serves as an artillery prime mover and as a personnel carrier for 24 men. It appears to be of recent manufacture, and its first known appearance in combat was during the Leyte campaign in the Philippines.

It is a full-tracked vehicle armored with 1/4-inch plate throughout. The engine which is located at the right front of the body is a 6-cylinder, in-line, valve-in-head, air-cooled diesel of a type similar to those used in the Model 2595 light tank and the combination prime mover and wrecker. Two fuel tanks provide an estimated total capacity of 50 to 60 gallons.

The tracks and suspension are of the conventional Japanese design, using dual bogie wheels and a steel center guide track. The four bogie wheels, apparently identical with those on the Model 2595 light tank, are mounted on bell cranks and are sprung by horizontal coil springs which are inclosed within the body armor with only the bogie arms exposed. There are two return rollers. The track is driven from the rear. A clutch and brake steering system is used. The transmission provides four speeds forward and one reverse. A high and low transfer case is also provided.

A mount for a 7.7 mm machine gun is located on the left front of the driver’s compartment. The vehicle does not mount a winch, but is provided with a spring mounted towing pintle for use as a prime mover. It has a capacity of from 2 to 3 tons if used as a cargo carrier. Maximum speed is reported as approximately 35 miles per hour, with exceptionally good cross-country performance due to the amount of track area in contact with the ground in relation to the weight of the vehicle.

SPECIFICATIONS

Weight
Length (overall)       15 ft., 9 ins.
Width (overall) 6 ft., 8 ins.
Height
Ground clearance
Tread centers
Ground contact 9 ft., 10 ins.
Width of track 10 ins.
Pitch of track 3-13/16 ins.
Track links 125
Fording depth
Theoretical radius of action
     Roads
     Cross-country
Speed (maximum) 35 m.p.h.
Armor (reported) 1/4 in.
Armament 7.7 mm machine gun
Ammunition (Rds.)
Engine 6-cylinder, in-line, valve-in-head, diesel.
Transmission 4 speeds forward, 1 reverse; high and low range.
Steering Clutch and brake system
Seating capacity 24

Japanese: p. 18.3 (May 1, 1945)

Categories
Japanese

“Kato” General Purpose Tractor

Kato General Purpose TractorThis is a commercial type wheeled tractor used for general purpose work. The front wheels are 29 x 5 inches and the rear dual wheels are 40 x 10 inches, all fitted with solid rubber tires. The drive is from the rear wheels only, and steering is effected by a worm gear system operating the front wheels. Normal automotive controls are provided, save for a hand throttle. The transmission provides three speeds forward and two in reverse.

The K3 type engine is identical to that used in the “Kato” 70 tractor–a 4-cylinder, valve-in-head, gasoline type. There are two cylinder blocks of two cylinders each instead of a solid cylinder block. The generator, high-tension magneto, and water pump are all linked together with universal joints and driven from a single shaft extending from the timing gear on the right of the engine.

The tractor is fitted with front and rear towing pintles cast solid with the frame.

SPECIFICATIONS

Weight          
Winch capacity
Length
Wheel base 90 ins.
Overall width of tractor (rear) 74 ins.
Overall height of tractor 5 ft.
Capacity of fuel tank 30 gals.
Tread centers (front) 63 ins.
Ground clearance 8 ins.
Fuel capacity (approx.) 30 gals.
Engine 60 h.p. at 1,200 r.p.m.
Bore 121 mm
Stroke 152 mm

Japanese: p. 18.6 (August 1, 1945)