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M41 Walker Bulldog



Overview


M41 Walker Bulldog

Former Republic of China M41 Walker Bulldog on display ata museum. Photographed in 2014.
Source: Summer Palace New Residence - © CC BY-SA 4.0

Origin
United States
Type
Light tank
Entered service
1953
Status
Obsolete
Development
1946 - 1950
Developer
United States
Production
1951 - 1954
Producer
United States - Cadillac Motor Car Division of General Motors
Unit cost
$ 162.000 for 2nd hand in 1988
Number produced
1.785 or 1.802 M41
1.944 M41A1
~5.500 in total
Designations
T41E1 (prototype)
Notable users
United States
Vietnam - ARVN
Brazil
Taiwan
Germany - West Germany

Description


Introduction

The M41 Walker Bulldog is an early Cold War era light tank of American origin. It was developed just after World War 2 as a replacement for the M24 Chaffee. Service life for the M41 in US service was rather short. As a light tank it was rather heavy and had a tall silhouette, while fuel efficiency was bad.

Design

The M41 Walker Bulldog reflects post war tank design in being rather large and having a mixed welded and cast steel armor package. The driver sits in the hull and the other three crew members are located in the turret. The petrol engine and drivetrain are located at the rear. For a light tank the M41 is rather large and tall.

Firepower

The main armament is a 76mm M32 manually loaded rifled gun. Ammunition types include armor piercing, high velocity armor piercing, smoke and high explosive. When introduced the M41 could engage the widely used Soviet T-34/85 medium tank. There are 57 or 65 shells depending on variant. Rate of fire is quoted as 12 rpm. There is no gun stabilizer, requiring the tank to halt before engaging a target. A .30 M1919A4 machine gun is mounted as coaxial armament. A 12.7mm M2HB heavy machine gun is mounted on the turret roof.

Protection

The M41 has a steel hull and turret. Both hull and turret are of a welded construction and feature cast steel sections. Armor ranges from 13 mm to 32 mm, with some sections well angles. This armor will not stop tank guns or HEAT rounds, but will protect the crew from heavy machine gun fire and some 20mm autocannon. There are no smoke grenade launchers, nor is there a NBC system.

Mobility

The mobility is both the upside and downside of the M41. The maximum speed and power to weight ratio are good. Fuel efficiency is very poor, resulting in a maximum autonomous range of 160 km. This was later improved to 180 km using a fuel injection system, but is still poor.

Users

The M41 was acquired in quantity by the US Army, until after several years the M47 Patton was favored on the production line instead. The M41 saw active combat in Vietnam. Nearly 300 M41 were lost by South Vietnam during the Vietnam war. Large numbers of relatively new ex-US Army M41 tanks became available to US allies during the Cold War. These were acquired and use in quantity. Various upgrade programs were developed and applied by these foreign users. Present day the M41 is obsolete and practically only remains in storage or in second-line duty.

Variants


M41 Walker Bulldog

Forward view of M41 Walker Bulldog light tank in service with New Zealand as seen in 1974.
Source: R. Anderson - © CC BY 2.0

List of M41 Walker Bulldog variants

M41
Original production model that was rushed into production before all quirks were ironed out. About 1.800 produced before production switched to the M41A1. A total of 416 existing M41 also upgraded to M41A1. Some early production models were fitted with a coaxial 12.7mm M2E1 heavy machine gun.
M41A1
Updated model with various minor upgrades to improve reliability, introduced in 1953. Armed with M32A1 gun in M76A1 mount connected to a hydraulic turret traverse and elevation system. This was installed in order to meet the 5 second target engagement parameter. Ammunition load increased to 65 rounds.
M41A2
Further improvement of existing stocks of M41 with fuel injection AOSI-895-5 and an improved dual power turret traverse and elevation system. Introduced in 1955.
M41A3
Existing M41A1 light tanks fitted with the more fuel efficient engine, but retaining the hydraulic turret traverse system of the M41A1.

Details


Facts M41 Walker Bulldog M41A3 Walker Bulldog
General
Origin
United States
Type
Light tank
Crew
4 (commander, driver, gunner, loader)
Dimensions
Weight
23.2 t combat load
Length
8.09 m gun forward
5.82 m hull
Width
3.20 m
Height
2.73 m to commander's cupola
3.02 m overall
Main armament
Type
76mm M32 gun
Mount
M76 mount
Ammunition
57 rounds, 11 ready to fire
Elevation
-10° to +20°, manual
Traverse
360°, powered and manual
Traverse rate
36°/s
Stabilizer
No
Coaxial armament
Type
.30 M1919A4E1 machine gun
Mount
Coaxial with main armamant
Ammunition
5.225 rounds
Traverse
Traverse and elevation as main armament
Secondary armament
Type
12.7mm M2HB heavy machine gun
Mount
Turret roof
Ammunition
600 rounds, 100 ready to fire
Elevation
-10° to +65°, manual
Traverse
360°, manual
Stabilizer
No
Chassis
Chassis type
Tracked chassis, 5 roadwheels
Layout
Idler front, drive sprocket rear
Tread
2.60 m
Track width
0.53 m
Track on ground
3.23 m
Ground pressure
0.67 kg/cm²
Suspension
Torsion bar
Automotive
Engine model
Continental AOS-895-3
Engine type
6-cylinder supercharged petrol
Power output
500 hp at 2.800 rpm
Torque
1.300 Nm at 2.400 rpm
Transmission
Allison CD-500-3
2 forward, 1 reverse
Fuel
530 L
Mobility
Speed
72 km/h
Range
160 km on roads
Turn radius
Pivot
Power to weight ratio
21.6 hp/t
Obstacle crossing
Ground clearance
0.45 m
Wall
0.7 m
Trench
1.8 m
Gradient
60 %
Slope
30 %
Fording
1.2 m
Protection
Armor type
Steel, welded steel with cast sections
Armor thickness
25 mm glaces at 65°
32 mm lower hull front at 45°
13 to 25mm hull sides
32 mm gun mantlet
25 mm turret front sides and rear
13 to 19 mm turret roof
NBC system
No
Smoke system
No
Equipment
Night vision
M19 infrared periscope for driver
No night vision for gunner or commander
Fire control
M97 gunner's sight with 8x magnification and 7° field of view
Radio
Yes

Family of vehicles


M42 Duster

Self-propelled anti-aircraft gun on the M41 chassis. Armed with two 40mm Bofors L/60 autocannon in an open roof turret.

M44

Self-propelled howitzer on the M41 chassis. Engine and drivetrain relocated forward in order to make room for an open roof rear superstructure with 155mm howitzer.

M75

Armored personnel carrier based on the automotive components of the m41 Walker Bulldog.

Media


Related articles


M24 Chaffee

The M41 Walker Bulldog was designed as a replacement for the World War 2 era M24 Chaffee light tank.

M551 Sheridan

The M551 Sheridan was developed to replace the M41 Walker Bulldog in US service. The M551 was designed to be lighter and have a smaller silhouette.