155mm Howitzer Motor Carriage M411-4

M41: General
Date of first acceptance June 1945 Total acceptances 85
Manufacturers
  • Cadillac Motor Car Division of General Motors Corp.
  • Massey Harris Co.
Crew 5 men
M41: Dimensions
Combat weight with T72 tracks 42,500lbs
19,300kg
Height 94"
240cm
Length 230"
584cm
Howitzer overhang forward 0"
Width 112"
284cm
Tread 96"
240cm
Ground clearance 17"
43cm
Fire height 77"
196cm
Ground pressure, zero penetration with T72 tracks 10.7psi
.751kg/cm²
M41: Armament
Type Mount Ammunition Traverse Elevation
155mm Howitzer M1 M14 on rear of chassis 22 rounds 37.5°
(20.5° left and 17° right;
manual)
+45° to -5°
(manual)
M41: Armor
Assembly
Welding
Hull
Rolled homogeneous steel
Location Thickness Angle from vertical
Upper front .5"
1.3cm
60°
Lower front .5"
1.3cm
45°
Sides .5"
1.3cm
12°
Rear .5"
1.3cm
Tailgate .25"
.64cm
0° (raised)
Front top .5"
1.3cm
90°
Rear top Open
Crew shields .25"
.64cm
Front floor .5"
1.3cm
90°
Rear floor .375"
.953cm
90°
M41: Automotive
Engine Twin Cadillac Series 44T24; 16 cylinder (8/engine) 4 cycle, 90 vee gasoline
Horsepower Net: 220@3400rpm (110/engine)
Gross: 296@3200rpm (148/engine)
Torque Net: 480 ft-lb@1200rpm (240/engine)
Gross: 560 ft-lb@1200rpm (280/engine)
Fuel capacity 110gal
420L
Transmission Twin Hydramatic, 8 speeds forward, 4 reverse
Steering Controlled differential, steering levers
Brakes Mechanical, external contracting
M41: Suspension
Type Road wheels Track return rollers
Torsion bar 5 individually sprung dual/track 4 dual/track
Drive sprockets Idlers Shock absorbers
13-tooth front drive Dual compensating at rear of track On first 2 and last 2 road wheels/track
M41: Track
T72
Center guide, single pin, rubber bushed, steel, parallel grouser
Width 16"
41cm
Pitch 5.5"
14cm
Shoes/track 80 Ground contact length 124"
315cm
T85E1
Center guide, double pin, rubber bushed, rubber, chevron
Width 14"
(16.5" with extended end connectors)
36cm
(41.9cm with extended end connectors)
Pitch 5.5"
14cm
Shoes/track 80 Ground contact length 124"
315cm
M41: Performance
Max level road speed 35mph
56kph
Max trench 108"
274cm
Max grade 60% Max vertical obstacle 40"
100cm
Min turning diameter 46'
14m
Max fording depth 42"
107cm
Cruising range ~100mi, roads
~160km, roads

The self-propelled howitzer M41 was based on a lengthened M24 Chaffee chassis, and had many of the same modifications as the hull of the M19 self-propelled twin 40mm anti-aircraft gun. The M41's engine was moved to behind the drivers' compartment, and the 155mm howitzer mount was placed at the rear of the vehicle.

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References

  1. Hunnicutt, R.P. Stuart: A History of the American Light Tank, volume 1. Navato, CA: Presidio Press, 1992. Reprinted with permission from Stuart, R.P. Hunnicutt ©1992, available from Presidio Press, 505B San Martin Drive, Suite 160, Navato, CA 94945.
  2. TM 9-744 155-mm Howitzer Motor Carriage M41. Washington, DC: War Department, September 1947.
  3. TM 9-1729C Ordnance Maintenance--Light Tank M24 and 155-mm Howitzer Motor Carriage M41 Tracks, Suspension, Hull and Turret. Washington, DC: War Department, September 1947.
  4. Chamberlain, Peter, and Chris Ellis. British and American Tanks of World War Two. Frome, England: Cassell & Co., 2000.

Last updated 15 Oct 2014.
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© Copyright 2001-14 Chris Conners