Ho-Ni I, II, III:
Use Type 97 CHI-HA tank chassis.
Ho-Ni I:

75 mm anti tank gun. Developed in 1942.
The 75 mm gun fired a 14 lb round at a muzzle velocity of 2,260 '/sec to a maximum range of 13,000 yards.3
Ho-Ni II:
105 mm howitzer.
Ho-Ni III:

75 mm Type 88 anti tank gun. Slightly better armor protection on top and rear of gunshield.
Type 38 (Type 42) Ho-Ro:
Type 97 Medium and Type 4 Self Propelled Gun


Aberdeen Tank Museum

Used CHI-HA chassis without turret and a shield around front and sides of gun. Gun had range of 6,500 yards and fired a 79 lb shell.3 It was based on a Krupp design. Was organized in 4 vehicle batteries.
| Ho-Ni I | Ho-Ni II | Ho-Ni III | Type 38 HO-RO /Type 4 HO-RO1 |
|
|---|---|---|---|---|
| Crew | 33 | 5 | 5 | 4 or 51, 53 |
| Physical Characteristics | ||||
| Weight | 32,704 lb 14.6 tons, 14.7 tons2, 15 tons3 |
36,064 lb 16.1 tons |
36,064 lb 16.1 tons |
29,982 lb1, 33,600 lb 13,600 kg1 15 tons3, 15.5 tons2 |
| Length w/gun | 18.2'3 I5.55 m2 |
18', 18.2'3, 18' 2"1 5.52 m2, 5.537 m1 |
||
| Length w/o gun | ||||
| Height | 7.7'3 2.39 m2 |
7.6'3, 7' 9" 2.36 m2 To top of Shield: 5' 1"1, 1.549 m1 |
||
| Width | 7.7'3 2.33 m2 |
7' 6"1,
7.6'3, 7' 8.5" 2.286 m1, 2.33 m2 |
||
| Width over tracks | ||||
| Ground clearance | 14"3 | 14"3 | ||
| Ground contact length | 138"3 | 144"3 | ||
| Ground pressure | 8.4 psi3 | 8 psi3 | ||
| Turret ring diameter | ||||
| Armament | ||||
| Main | 75 mm Type 902,3 | 105 mm Type 91 field howitzer2 | 75 mm Type 88 antiaircraft | 150 mm Type 38 howitzer1,2 150 mm Type 38 howitzer, L/123 |
| Secondary | ||||
| MG | ||||
| Side arms | ||||
| Quantity | ||||
| Main | 542 | 202 | 282 | |
| Secondary | ||||
| MG | ||||
| Side arms | ||||
| Armor Thickness (mm) | Front: 0.98"3, 502 Side: 0.8"3, 252 |
Front: 0.63"3, 252 Side: 0.5"3, 202 |
||
| Hull Front, Upper | 25 | |||
| Hull Front, Lower | ||||
| Hull Sides, Upper | ||||
| Hull Sides, Lower | ||||
| Hull Rear | ||||
| Hull Top | ||||
| Hull Bottom | ||||
| Superstructure Front | 2"3 | 1"3 | ||
| Superstructure Sides | 0.63"3 | |||
| Superstructure Rear | ||||
| Superstructure Top | ||||
| Engine (Make / Model) | Mitsubishi | Mitsubishi | Mitsubishi | |
| Bore / stroke | ||||
| Cooling | Air3 | Air3 | ||
| Cylinders | V-123 | 12 | 12 | V-121,3 |
| Capacity | ||||
| Net HP | 1702,3 | 1701,2,3 | ||
| Power to weight ratio | ||||
| Compression ratio | 17.8:13 | 17.8:13 | ||
| Transmission (Type) | Sliding pinion with high-low trasfer case3 4 forward, 1 reverse3 |
Sliding pinion with high-low trasfer case3 4 forward, 1 reverse3 |
||
| Steering | Clutch brake3 | Clutch brake3 | ||
| Steering ratio | ||||
| Starter | Electric3 | Electric3 | ||
| Electrical System | Starting: 24-volt3 Running: 12-volt3 |
Starting: 24-volt3 Running: 12-volt3 |
||
| Ignition | ||||
| Fuel (Type) | Diesel3 | Diesel | Diesel | Diesel1,3 |
| Octane | ||||
| Quantity | 52 gallons in 2 tanks3 | 52 gallons in 2 tanks3 | ||
| Road consumption | 3.7 gallons/hour @ 9.3 mph3 | 3.7 gallons/hour @ 9.3 mph3 | ||
| Cross country consumption | ||||
| Performance | ||||
| Traverse | 10° left, 10° right2, 20°3 | 20° | 20° | 3° left, 3° right.2, 30°3 |
| Max speed | 25 mph3 38 kph2 |
25 mph | 25 mph | 23.6 mph1, 24 mph, 25 mph3 38 kph1,2 |
| Cross country speed | ||||
| Road radius | 130 miles3, 131 miles | 131 miles | 131 miles | 100 miles3 |
| Cross country radius | ||||
| Turning radius | ||||
| Elevation limits | -5° to +25°3 | -5° to +20° | -5° to +20° | -10° to +20°2 |
| Fording depth | 39"3 | 39"3 | ||
| Trench crossing | 8.25'3 | 8.25'3 | ||
| Vertical obstacle | ||||
| Climbing ability | 30° (57%) slope3 | 30° (57%) slope3 | ||
| Suspension (Type) | Front and rear wheels independently sprung, center wheels sprung in pairs, coil springs3 | Front and rear wheels independently sprung, center wheels sprung in pairs, coil springs3 | ||
| Wheels each side | 63 | 63 | ||
| Return rollers each side | 33 | 33 | ||
| Tracks (Type) | Dry pin3 | Dry pin3 | ||
| Length | ||||
| Width | 13"3 | 13"3 | ||
| Diameter | ||||
| Number of links | 953 | 953 | ||
| Pitch | 4.9"3 | 4.9"3 | ||
| Tire tread | ||||
| Track centers/tread | 6.6'3 | 6.6'3 | ||
| Production | 124 |
Sources:
- The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
- Jane's World War II Tanks and Fighting Vehicles The Complete Guide, Leland Ness, 2002
- Tank Data, Aberdeen Proving Grounds Series, 1968?
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