Multiple Gun Motor Carriage M171-5

M17: General
Date of first acceptance December 1943 Total acceptances 1000
Manufacturer International Harvester Corp. Crew
5 men:
  • Commander in cab right
  • Gunner in turret
  • Two cannoneers on right and left of turret
  • Driver in cab left
M17: Dimensions
Combat weight 19,700lbs
8940kg
Height 90"
230cm
Length with winch 255.5"
649.0cm
Gun overhang forward 0"
Width 85.625"
217.49cm
Front tread 66.5"
169cm
Rear tread 63.8"
162cm
Wheelbase 135.5"
344.2cm
Ground clearance 11.2"
28.4cm
M17: Armament
Type Mount Ammunition Traverse Max traverse rate Elevation
Four .50cal M2TTHB MG M45D 5000 rounds 360°
(electric)
60°/sec +90° to -10°
(electric)
Rangefinder
Reflex sight M18 or illuminated sight Mk. 9 Mod. 1
M17: Armor
Assembly
Welding
Hull
Rolled homogeneous steel
Location Thickness Angle from vertical
Radiator louvres .31"
.79cm
27°
Windshield cover .625"
1.59cm
23°
Sides .31"
.79cm
Rear .31"
.79cm
Hood top .31"
.79cm
83°
Turret
Rolled face-hardened steel
Location Thickness Angle from vertical
Shield .25"
.64cm
0° to 35°
M17: Automotive
Engine International Harvester RED-450-B; 6 cylinder, 4 cycle, in-line gasoline
Horsepower Net: 143@2700rpm Torque Net: 348 ft-lb@800rpm Fuel capacity 60gal
230L
Transmission Spicer 1856 constant mesh, 4 speeds forward, 1 reverse
Steering Steering wheel
M17: 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
M17: Track
Center guide band type
Width 12"
30cm
Pitch 4"
10cm
Pitches/track 58 Track ground contact length 46.75"
118.7cm
M17: Performance
Max level road speed 42mph
68kph
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 M17 was based on the half-track personnel carrier M5, and was essentially the IHC version of the MGMC M16.

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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.
  5. Siemers, Cary. "USA's Half Track Gun Motor/Mortar Carriages." World War II Tanks & Vehicles and Advanced Squad Leader. 4 Jul 2001. 23 Sep 2001 <http://www.siemers.com/wwii/USA/GunMotorCarriage.htm>.

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