M1918: General | |||
Date of first acceptance | 1918 | Total acceptances | 15 |
Manufacturer | Ford Motor Co. | Crew |
|
M1918: Dimensions | |||
Combat weight | 7200lbs 3300kg |
Height | 64" 160cm |
Length with tailpiece | 160" 410cm |
Gun overhang forward | 0" |
Width | 64" 160cm |
Tread | 57" 140cm |
Ground clearance | 14" 36cm |
Fire height | ~42" ~110cm |
Ground pressure, zero penetration | 9.2psi .65kg/cm² |
M1918: Armament | ||||
Type | Mount | Ammunition | Traverse | Elevation |
.30cal Browning or Marlin tank MG | Ball mount in left bow | ~2000 rounds | 22° (manual) |
38° (manual) |
M1918: Armor | ||
Assembly | ||
Riveting | ||
Hull | ||
Rolled face-hardened steel | ||
Location | Thickness | Angle from vertical |
Upper left front | 0.5" 1.3cm |
0° |
Upper right front | 0.5" 1.3cm |
38° |
Lower front | 0.375" 0.953cm |
60° |
Front sides | 0.5" 1.3cm |
0° |
Rear sides | 0.25" 0.64cm |
22° |
Upper rear | 0.5" 1.3cm |
37° |
Lower rear | 0.25" 0.64cm |
35° |
Front top | 0.375" 0.953cm |
90° |
Rear top | 0.25" 0.64cm |
60° |
Floor | 0.25" 0.64cm |
90° |
M1918: Automotive | |||
Engine | Dual Ford Model T; 8 cylinder (4/engine), 4 cycle, vertical L-head gasoline | ||
Horsepower | Gross: 34@1700rpm | Fuel capacity | 17gal 64L |
Transmission | Dual Ford planetary, 2 speeds forward, 1 reverse | ||
Steering | Clutch-brake, steering levers | ||
Brakes | Mechanical |
M1918: Suspension | ||
Type | Road wheels | Track return rollers |
Leaf spring | 2 bogies/track; 3 wheels/bogie |
2/track |
Drive sprockets | Idlers | Shock absorbers | 10-double tooth rear drive | At front of track | None |
M1918: Track | |||||||
Single pin, cast with integral grouser | |||||||
Width | 7" 18cm |
Pitch | 7" 18cm |
Shoes/track | 40 | Ground contact length | 56" 140cm |
M1918: Performance | |||
Max speed | 8mph 13kph |
Max trench | 60" 150cm |
Max grade | 50% | Max vertical obstacle | 20" 51cm |
Min turning diameter | 27' 8.2m |
Max fording depth | 21" 53cm |
Cruising range | ~34mi ~55km |
The M1918 was meant to utilize Ford's mass-production knowledge, and therefore Ford car components were integrated into its design. Each engine had its own transmission, and the driver's steering levers each controlled one of the transmissions. The Browning tank machine gun was fitted initially, but this was replaced on later vehicles by the Marlin machine gun. The Marlin's shielded mount was provided with 38° of elevation and 21° of traverse. The US Tank Corps, after trials in France, decreed that the M1918 was unacceptable, and the contract for the production of 15,000 machines was cancelled following the Armistice.