M116: General | |||
Total acceptances | 200 | ||
Manufacturers |
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Crew |
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M116: Dimensions | |||
Gross weight | 10,880lbs 4,935kg |
Height | 79⅛" 200.98cm |
Length | 188⅛" 477.838cm |
Width | 82⅛" 208.60cm |
Tread | 58½" 149cm |
Ground clearance | 15½" 39.4cm |
Ground pressure with max payload | 2.6psi .18kg/cm² |
M116: Armament |
None |
M116: Armor |
None |
M116: Automotive | |||||
Engine | Chevrolet 283-V8 Military; 8 cylinder, 4 cycle, vee gasoline | ||||
Horsepower | Net: 115@3,600rpm Gross: 160@4,200rpm |
Torque | Net: 210 ft-lb@2,400rpm Gross: 240 ft-lb@2,800rpm |
Fuel capacity | 65gal 250L |
Transmission | Detroit Transmission Div. Hydramatic Model 305 MC, 4 speeds forward, 1 reverse | ||||
Steering | Allison GS 100-3 geared/clutch-brake, steering wheel | ||||
Brakes | Multiple plate, oil cooled |
M116: Suspension | ||
Type | Road wheels | Track return rollers |
Torsion bar | 5 individually sprung dual/track | Flat track |
Drive sprockets | Idlers | Shock absorbers | 11-tooth front drive | Dual adjustable at rear of track | On first and last road wheels/track |
M116: Track | |||||||
T125 | |||||||
Double center guide, band type with replaceable rubber pad | |||||||
Width | 20" 51cm |
Pitch | 32" long sections; 4" crossbar pitch 81cm long sections; 10cm crossbar pitch |
Shoes/track | 11 sections/track; 88 crossbars/track |
Ground contact length | 103" 262cm |
M116: Performance | |||
Max level road speed | 37mph 60kph |
Max water speed | 4mph 6kph |
Max trench | ~58" ~150cm |
Max grade | 60% |
Max vertical obstacle | ~18" ~46cm |
Min turning diameter | Pivot |
Max fording depth | Floats | Cruising range | ~300mi, roads ~22mi, water ~480km, roads ~35km, water |
Standardized on 15 December 1960, the amphibious cargo carrier M116 resulted from efforts to replace the Weasel cargo carrier. Pacific Car and Foundry engineered the design and produced three preproduction pilots, but on 15 December 1961 Blaw-Knox was awarded the production contract for 197 vehicles. The M116 weighed 6,700lb (3,040kg) empty and 7,880lb (3,570kg) at the curb with fuel, on-equipment material, and driver. Ground pressure at curb weight was 1.9psi (.13kg/cm²). A 3,000lb (1,360kg) payload could be carried, or up to 13 passengers depending on their luggage (e.g., a reduction to 10 men in winter uniforms). The fiberglass cab was removable from the aluminum hull, reducing the height to 63¼" (160.7cm); similarly the length could be reduced to 181⅛" (460.058cm) and width to 80" (200cm). A 5,000-6,000lb (2,270kg-2,720kg) capacity winch was mounted in the hull front. Two sets of two series-connected 12-volt 2HN batteries were connected in parallel to supply power for the 24-volt electrical system. A portable 5lb (2.3kg) CO2 fire extinguisher was carried. A bottom-hinged cargo door was at the rear of the hull, and both summer and winter cargo compartment covers could be installed, along with cushions for personnel or a kit that permitted transportation of four litters.
In December 1966, Pacific Car and Foundry was assigned a contract for 111 M116A1s for the US Navy and Marine Corps, and the first of these was delivered to Aberdeen Proving Ground in December 1967. These were unarmored versions of the amphibious armor cargo carrier M733, which in turn was essentially an armored M116.