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M41 Gorilla


155mm Howitzer Motor Carriage M41


Overview


M41 Gorilla

M41 Howizter Motor Carriage on display in a museum.
Source: AFVDB - © Copyright lies with original owner

Origin
United States
Type
Self-propelled howitzer
Entered service
1945
Status
Out of service
Development
1942 - 1945
Developer
United States
Production
1945 - ?
Producer
United States - Massey Harris
Number produced
250 ordered, reduced to 85 produced
Designations
Gorilla (US nickname)
155mm Howitzer Motor Carriage M41
T64 (early prototype based on M5 Stuart)
T64E1 (prototype on M24 chassis)
Notable users
United States
France

Description


Introduction

The M41 Howziter Motor Carriage is a self-propelled howitzer of US origin. In US service it was also known as the Gorilla. This self-propelled howitzer was developed to supplement the earlier M12 Gun Motor Carriage. Compared to the older M12 the M41 had improved mobility

Design

The M41 Gorilla mates the existing 155mm M1 towed howitzer with the chassis of the M24 Chaffee light tank. The chassis was redesigned with the engine mounted in the center. A similar modification was carried out to create the M19 self-propelled anti-aircraft gun. An open roof firing compartment at the rear houses the howitzer. Shells are stowed underneath the mount. In the firing position the tailgate is lowered and serves as a crew platform.

Firepower

The 155mm M1 howitzer has a similar performance as its towed counterpart. It has a maximum range of 14.6 km and a sustained rate of fire of 4 rpm. A total of 22 shells are carried on the vehicle. Additional ammunition is provided by M39 Armored Utility Vehicles. The M41 has a limited direct fire capability.

Protection

The steel armor protects the crew from small arms fire when on the move. The M41 is an open roof vehicle. In the firing position the crew is exposed behind the vehicle. Crew survivability is mainly improved compared to towed guns by the mobility that the tracked chassis provided.

Mobility

The tracked chassis of the M24 Chaffee light tank provides good off road mobility for World War 2 standards. Two 110 hp V8 petrol engines provide propulsion. On roads the M41 can achieve 56 km/h. Fuel consumption is high and as a result the effective range is low.

Users

The M41 was developed during World War 2 but never saw service during that conflict. The initial requirement was for 250 vehicles. This was reduced to 85 as World War 2 ended. The M41 was used by the US Army during the Korean war. The sole export user was France. In both nations the M41 was reportedly well liked. In French service the M41 was replaced by the Mk F3.

Details


Facts M41 Gorilla
General
Origin
United States
Type
Self-propelled howitzer
Crew
5
Dimensions
Weight
19.3 t combat load
Length
5.84 m
Width
2.84 m
Height
2.40 m
Main armament
Type
155mm M1 howitzer
Mount
Cradle at rear of vehicle
Ammunition
22 shells
Elevation
-5° to +45°, manual
Traverse
21° left and 17° right, manual
Rate of fire
4 rpm sustained
Range
14.6 km maximum
Chassis
Chassis type
Tracked chassis, 5 roadwheels
Layout
Drive sprocket front and idler rear
Track width
0.41 m
Track on ground
3.15 m
Ground pressure
0.75 kg/cm²
Suspension
Torsion bar
Automotive
Engine model
2x Cadillac 4T24
Engine type
8-cylinder V8 gasoline
Power output
220 hp at 3.400 rpm net combined (110 hp per engine)
296 hp at 3.200 rpm gross
Transmission
Hydramatic, 8 forward, 4 reverse
Fuel
420 L
Mobility
Speed
56 kmn/h
Range
160 km on road
Turn radius
14 m minimum
Power to weight ratio
11.4 hp/t
Obstacle crossing
Ground clearance
0.43 m
Wall
1.0 m
Trench
2.7 m
Gradient
60 %
Fording
1.1 m
Protection
Armor type
Welded steel
Open roof
Crew exposed when firing
Armor thickness
13 mm all around
NBC system
No
Smoke system
No

Media


Related articles


M24 Chaffee

The M41 is based on a modified M24 Chaffee light tank chassis.

155mm M114

The M41 Gorilla is armed with the 155mm M1 howitzer. This was used in large numbers during during World War 2 and later conflicts. After the war the towed variant was redesignated as M114.

M37 Howitzer Motor Carriage

The M37 HMC is also based on the M24 chassis, but is armed with a smaller caliber 105mm M4 howitzer in a casemate superstructure.

Mk F3

France developed their Mk F3 in order to replace the M41 Gorilla in French service.

M44

The M44 was developed to replace the M41 in US service. The M44 uses a 155mm howitzer with similar performance.