Twin 20mm Gun Motor Carriage T10E11-4

T10E1: General
Date of first acceptance March 1944 Total acceptances 110
(109 converted to MGMC M16)
Manufacturer White Motor Co. Crew 5 men
T10E1: Dimensions
Combat weight 19,500lbs
8850kg
Height 96.75"
245.7cm
Length with winch 256"
650cm
Gun overhang forward 0"
Width 77.9"
198cm
Front tread 64.5"
164cm
Rear tread 63.8"
162cm
Wheelbase 135.5"
344.2cm
Ground clearance 11.2"
28.4cm
T10E1: Armament
Type Mount Ammunition Traverse Max traverse rate Elevation
Two 20mm Guns Mark IV T17E1 3000 rounds 360°
(electric)
60°/sec +90° to -10°
(electric)
Rangefinder
Reflex sight Mk. 9
T10E1: Armor
Assembly
Bolting
Hull
Rolled face-hardened steel
Location Thickness Angle from vertical
Radiator louvres .25"
.64cm
26°
Windshield cover .50"
1.3cm
25°
Sides .25"
.64cm
Rear .25"
.64cm
Hood top .25"
.64cm
83°
Turret
Rolled face-hardened steel
Location Thickness Angle from vertical
Shield .25"
.64cm
0° to 35°
T10E1: Automotive
Engine White 160AX; 6 cylinder, 4 cycle, in-line gasoline
Horsepower Net: 147@3000rpm Torque Net: 325 ft-lb@1200rpm Fuel capacity 60gal
230L
Transmission Spicer 3461 constant mesh, 4 speeds forward, 1 reverse
Steering Steering wheel
T10E1: Suspension
Type Road wheels Track return rollers
Front: Semi-elliptic longitudinal leaf spring
Rear: Vertical volute spring
Front: Steel ventilated disc
Rear: 1 bogie/track;
4 dual/bogie
1 dual/track
Drive sprockets Idlers Shock absorbers
18-tooth front drive Spring-loaded at rear of track On front wheels
T10E1: Track
Center guide band type
Width 12"
30cm
Pitch 4"
10cm
Pitches/track 58 Track ground contact length 46.75"
118.7cm
T10E1: Performance
Max level road speed 45mph
72kph
Max grade 60%
Max vertical obstacle 12"
30cm
Min turning diameter 59'
18m
Max fording depth 32"
81cm
Cruising range ~200mi, roads
~320km, roads

The T10E1 was armed with two Oerlikon 20mm guns in modified Maxson turrets which could also accept four .50cal MGs. The turrets were installed on modified M16 MGMCs, however all but one of the T10E1s produced were returned to their .50cal configuration. The first production vehicle was retained by Aberdeen Proving Ground out of historical interest.

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References

  1. Hunnicutt, R.P. Half-Track: A History of American Semi-tracked Vehicles. Navato, CA: Presidio Press, 2001. Reprinted from Half-Track, R.P. Hunnicutt ©2001, available from Presidio Press, 505B San Martin Drive, Suite 160, Navato, CA 94945.
  2. Doyle, David. U.S. Half-tracks: The Development and Deployment of the U.S. Army's Half-track Based Multiple Gun Motor Carriages and Gun Motor Carriages, Part two. Ed. Pat Stansell. Delray Beach, FL: The Ampersand Publishing Group, Inc., 2016.
  3. Crismon, Fred W. U.S. Military Tracked Vehicles. Osceola, WI: Motorbooks International, 1992.
  4. Chamberlain, Peter, and Chris Ellis. British and American Tanks of World War Two. Frome, England: Cassell & Co., 2000.

Last updated 6 Apr 2016.
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© Copyright 2001-16 Chris Conners