The M-1 medium tractor designation was given to several commercial
tractors used by the US Army, with a bare amount of militarization.
Although officially listed to tow artillery and heavy equipment over
rough terrain, it was most often used for engineering work. The M-1
entered service in 1941 and was not retained long after the end of the
war.
The M-1 could pull 6.7 tons and was equipped with a 12.5 ton winch.
The M-1 had a crew of one, a driver, and used 1.6 gallons of diesel per hour at routine usage.
Subassemblies: Small Tank chassis +3, two tracks
+2.
Powertrain: 40-kW diesel engine with 40-kW tracked
transmission
and 60-gallon standard fuel tank; 4,000-kWs batteries
Occupancy: 1 XCS Cargo: 2
Armor
Body: 3/10
Tracks:: 4/35
Equipment
Body: 12.5-ton winch
Statistics
| Size: 13'x8'x8' | Payload : 0.2 tons | Lwt: 10.8 tons |
| Volume: 48 |
Maint.: 135 hours | Price: $2,200 |
HT: 12
HP: 1,000 [body], 400 [each track]
| gSpeed: 8.5 |
gAccel: 2 |
gDecel: 20 | gMR: 0.25 | gSR: 5 |
Design Notes
Loaded weight was increased by 57% and gSpeed was radically lowered
from the design speed of 19 mph. Design ground pressure was Low;
however, given the large size of the tracks to the body and the
borderline value of 906, this adjustment was felt reasonable.
This particular design represents the International Harvester Model TD14.
Fourteen VSP left are ignored. The 2 VSP cargo is in an open frame
rack behind the driver, as the rear of the body.