Tag Archive for 'tractor'

Mun. Trsp. Kw. Auf. Lr. S.: Ammunition Carrier (on French Lorraine Chassis)

Mun. Trsp. Kw. Auf. Lr. S.: Ammunition Carrier  (on French Lorraine Chassis)

The chassis of this vehicle is divided into the driving compartment at the front, the engine compartment in the center and an open-welled tray at the rear. The driving and engine compartments are armored on the sides and top; the rear compartment is armored on the sides only. The superstructure plates over the driving and engine compartments are bolted, whereas the sides of the rear superstructure are of riveted construction. With the exception of the cast nose plate and pressed steel cover, all the plates are flat and are riveted or bolted together over angle sections. There are no formed plates or welded joints. The armor thickness of the original carrier is as follows: Nose of hull 12 mm; front sloping plate 9.5 mm; sides 9 mm; back 9 mm.

The chassis is suspended from three semi-elliptical leaf springs on each side. The load is transmitted from the central point of each spring through supporting members to each of three pairs of bogies on each side. The bogie wheels are of the single, rubber-tired type 17.5 inches in diameter. Adjustment of the outside center guide track is provided by a movable rear idler. The driving sprocket is at the front and the track is returned on four return rollers positioned at the extremities of the semi-elliptical springs.

The power unit is the Delahaye, straight 6-cylinder, water-cooled, gasoline engine rated at 80 h.p. It has a bore of 84 mm and a stroke of 107 mm. The transmission is mounted centrally to the right of the driver. It provides five forward speeds and one reverse, the fifth speed being direct. The steering unit is housed in a large steel casting which forms the front plate of the vehicle. The brakes of external contracting type are mounted on the differential unit and therefore operate in oil.

SPECIFICATIONS

Weight
Length         12 ft., 6 ins. (approx.)
Width 5 ft., 10 ins.
Height
Ground clearance 7 ins.
Tread centers 4 ft., 4.6 ins.
Ground contact 9 ft.
Width of track 8.5 ins.
Pitch of track 3.18 ins.
Track links 109
Fording depth
Theoretical radius of action
     Roads
     Cross-country
Speed
     Roads 21 m.p.h.
     Cross-country
Armor
     Front plate 12 mm
     Sides 9 mm
Armament
Ammunition (rds.)
Engine Delahaye, 6-cyl., water-cooled, gasoline, 80 h.p.
Transmission 5 speeds forward, 1 reverse
Steering Controlled differential
Crew

German: p. 17

m. Zgkw. 5t (Sd. Kfz. 6): Medium Semitrack Prime Mover

m. Zgkw. 5t (Sd. Kfz. 6): Medium Semitrack Prime Mover

This is the medium 5-ton semitrack prime mover. It is designed as an artillery tractor to tow the piece and carry the gun crew of fourteen men. It is similar in design to all of the standard line of semitrack prime movers for artillery. It can tow a trailer load of 11,000 pounds when loaded to a combat weight of 19,360 pounds. The weight distribution on the front axle is 2,860 pounds, and on the track 16,500 pounds.

The suspension is made up of six dual-rim, rubber-tired bogie wheels, three of which are alternately straddle-mounted to torsion bars, followed by the idler which just clears the ground. The sprocket is fitted with contact rollers and rigidly mounted to the frame.

The vehicle is powered by a Maybach NL 38 TRKM 95 horsepower engine fitted with standard 12-volt Bosch magneto ignition and No. 40 JFF 2 Solex Carburetor.

The transmission combines the final drive which includes an epicyclic reduction gear for each sprocket. Steering is effected from the steering wheel in the usual manner up to 15°, after which the epicyclic steering brakes cause a reduction in the speed of the track on the inside of the turn, while through the differential a relative compensating action takes place.

This vehicle has a fuel tank capacity of 47 gallons; its highway fuel consumption is 1 gallon in 4 miles. The lifting winch which is fitted to the rear has a lifting power of 2.7 tons.

SPECIFICATIONS

Weight         8 tons
Length 19 ft., 9 ins.
Width 7 ft., 2 ins.
Height 8 ft., 2 ins.
Ground clearance 15 ins.
Tread centers 5 ft., 7 ins.
Ground contact 6 ft., 6 ins.
Width of track 12.6 ins.
Track links 55
Pitch of track
Fording depth 2 ft.
Theoretical radius of action
     Roads 180 miles
     Cross-country 71 miles
Speed
     Roads 30 m.p.h.
     Cross-country 18 m.p.h.
Armor
     Front plate
     Sides
Armament
Ammunition
Engine 6-cyl. Maybach HL 42 TRKM—100 hp.
Transmission 4 speeds forward, 1 reverse, high and low range
Steering 15° and over—Epicyclic controlled differential
Crew 15

German: p. 53

l. Zgkw. 3t (Sd. Kfz. 11): Light Semitrack Prime Mover

l. Zgkw. 3t (Sd. Kfz. 11): Light Semitrack Prime Mover

The following variations of the 3-ton light semitrack prime mover are known: (1) medium armored personnel carrier (Sd. Kfz. 251); (2) smoke vehicle (Sd. Kfz. 11/1) when it is apparently fitted with racks to carry generators; (3) medium decontamination vehicle (Sd. Kfz. 11/2); (4) medium bulk contamination vehicle (Sd. Kfz. 11/3); (5) ambulance. The vehicle is also used for mounting antiaircraft weapons.

The body and frame are constructed of electrically welded steel.

The suspension is the normal type as used for semitrack vehicles. Six pressed-steel, double-rim bogie wheels are straddle mounted on torsion bars which are housed in cross tubes, each containing two torsion bars. The track consists of rubber-pad track blocks which contain needle-bearings.

A normal type forged front axle is used to carry two pressed-steel wheels with 7.5 x 18 tires. No front brakes are provided. Triangular radius rods similar to conventional Ford system are attached from axle to cross members at rear of engine.

The power plant consists of a 6-cylinder, in-line, valve-in-head, liquid-cooled engine Maybach engine, type NL 42 TUKRR, rated 100 horsepower.

The vehicle has a radius of action of 168 miles on roads and 84 miles cross-country. It has a seating capacity for eight men, including the driver.

SPECIFICATIONS

Weight         6 tons
Length 18 ft.
Width 6 ft., 7 ins.
Height 7 ft., 3 ins.
Ground clearance 12.5 ins.
Tread centers 5 ft., 3 ins.
Ground contact 5 ft., 11 ins.
Width of track 11 ins.
Track links 54
Pitch of track 5.5 ins.
Fording depth 20 ins.
Theoretical radius of action
     Roads 168 miles
     Cross-country 84 miles
Speed
     Roads
     Cross-country
Trailer load 3.3 tons
Engine Maybach, NL 42 TUKRR—100 hp.
Transmission 4 speeds forward, 1 reverse, high and low range
Steering Front wheel and track epicyclic, controlled by normal steering wheel
Crew         8

German: p. 52

m. Zgkw. 8 t (Sd. Kfz. 7): Medium Semitrack Prime Mover

m. Zgkw. 8 t (Sd. Kfz. 7): Medium Halftrack Semitrack Prime Mover

The medium semitracked prime mover, like all German semitracks, is highly maneuverable. Its maneuverability is due to an epicyclic-controlled differential drive for the track with a brake linkage connected to the front-wheel steering system. These brakes are applied to the epicyclic on the side to which the turn is being made when the front wheels are turned. This results in easy steering.

This vehicle has a seating capacity for 12 (with driver), a trailer load capacity of 8.5 tons and a maximum highway range of 155 miles on a fuel capacity of 50 gallons. Its combat weight is 12.7 tons.

Body cross members are made up of flat steel welded to form an I-beam construction. All brackets, supports, etc., are welded and a minimum of rivets and bolts are used. Rather than cut holes in the frame to attach the body, a C-clamp is used.

Both spring and torsion bars were utilized in its suspension. A transverse spring, concave downward, is used as the suspension for the front end. The track portion of this vehicle has a total of four springs, two on each side, that make up the spring suspension for the rear. In addition, the trailing idler of each track is mounted eccentrically on a torsion bar which allows the tracks to be readily adjusted.

The power plant is a Maybach, valve-in-head, 6-cylinder gasoline engine, rated 140 hp. at 2,600 r.p.m. The power train includes a feature well worth reviewing. Incorporated in the clutch assembly is a brake that is located to the rear of the clutch disks. When the clutch is disengaged, the brake functions and retards the speed of the drive shaft to the transmission. This results in very easy gear-shifting.

This semitrack is equipped with inertia starter in addition to the electric starter, and a cable winch, capable of lifting 3.8 tons, is fitted in the rear.

SPECIFICATIONS

Weight         10.7 tons
Length 22 ft., 5 ins.
Width 7 ft., 10 ins.
Height 8 ft., 6 ins.
Ground clearance 15.7 ins.
Tread centers (Wheel, 78 ins.), (Track, 70 ins.)
Ground contact 7 ft., 4 ins.
Width of track 14 ins.
Track links 54
Pitch of track 7 ins.
Fording depth 25 ins.
Theoretical radius of action
     Roads 155 miles
     Cross-country 62 miles
Speed
     Roads 30 m.p.h. (est.)
     Cross-country 18 m.p.h. (est.)
Armor
     Front plate None
     Sides None
Trailer load 8.5 tons
Engine Maybach HL TR, 140 hp.
Transmission 4 speeds forward, 1 reverse, high and low range
Steering Epicyclic controlled differential
Crew 12

German: p. 54

kl. K. Kw. (Sd. Kfz. 2): Motorcycle Tractor

Kettenkrad - kl. K. Kw. (Sd. Kfz. 2): Motorcycle Tractor

The invasion of Crete (1941) revealed for the first time the use by the Germans of the motorcycle tractor. This vehicle, which retains the standard front wheel and handle bars of a normal motorcycle with the rear wheel replaced by two caterpillar tracks, is used primarily for towing light guns and supply, trailers, and for carrying dispatches in localities where difficult terrain precludes the use of wheeled vehicles. The mobility of this vehicle is as good as most tanks and its ability as a light prime mover, because of its wide gear selection, is excellent. Without load attached it has a maximum speed of 45 m.p.h. on level ground, and is capable of climbing 60 per cent grade.

The chassis is a boxlike structure of pressed steel in two sections, welded together in a horizontal plane below the track guards. It contains the driving compartment, engine, and a transverse seat accommodating two men facing the rear. A hand rail is provided on each side of the back. The driver is seated on a saddle seat directly above the transmission and clutch housing. Gasoline tanks are mounted on each side and, together with the battery and tool compartments, make up the side walls of the vehicle.

Power is furnished by the centrally mounted Opel Olympia 4-cylinder, water-cooled gasoline engine developing 37 gross B.H.P. in a displacement of 91.5 cu. in. Cooling is accomplished by a radiator, with a shaft-driven fan coupled to the crankshaft, at the rear. Six forward and two reverse speeds are available.

The suspension consists of four straddle-mounted, rubber-tired bogie wheels on torsion bars, a front driving sprocket, and a rear idler. The inner bogie wheels are of the hollow-spoke type while the outer wheels are of the removable disk type. The track, made up of 40 links per strand, is equipped with needle bearings and replaceable rubber pads.

SPECIFICATIONS

Weight         3,400 lb. (combat)
Weight 2,700 lb. (empty)
Length 9 ft., 10 ins.
Width 3 ft., 3 1/2 ins.
Height 3 ft., 11 ins.
Ground clearance 9 ins.
Tread centers 2 ft., 8 ins.
Ground contact 2 ft., 8 ins. (approx.)
Width of track 6.7 ins.
Pitch of track 4 3/4 ins.
Track links 40
Fording depth 20 ins. (approx.)
Theoretical radius of action
     Roads 155 miles
     Cross-country 100 miles
Speed
     Road 45 m.p.h.
     Cross-country 25-30 m.p.h.
Trailer load 980 lb. (normal weight)
Size of front tire 3.50 x 19
Engine Opel, 37 hp.
Transmission 3 speeds forward, 1 reverse with high and low range
Steering Controlled differentially, mechanical brakes
Crew 2 (driver and helper)

German: p. 50

l. Zgkw. 1t (Sd. Kfz. 10): Light Semitrack Prime Mover

l. Zgkw. 1t (Sd. Kfz. 10): Light Semitrack Prime Mover

This vehicle is used as a troop carrier and for towing light artillery and supply trailers. Accommodation for a crew of seven, including driver, is provided in the well of the body, the sides of which are sufficiently deep to obscure personnel to shoulder height when seated. With all inspection hatches of the hull closed the main body of the vehicle is practically watertight in traversing deep water.

The chassis of this vehicle is used for several specialized mountings: (1) for the 2 cm Flak 30 gun; (2) for gas-detector truck (Sd. Kfz. 10/1); (3) for light decontamination vehicle (Sd. Kfz. 10/2) carrying a hopper for spreading bleaching powder; (4) for light bulk contamination vehicle (Sd. Kfz. 10/3) fitted with a tank for blister gas and spraying device.

The power plant of the later models consists of a Maybach H.L. 42 T.R.K.M. straight-six, water-cooled engine rated at 100 horsepower. The Maybach N.L. 38 T.R.K.M. rated at 95 horsepower was formerly used. The power train is comprised of the twin-plate clutch, the preselective type transmission with four forward and one reverse speeds with high and low range, and the differential unit of spur-gear and pinion type. Steering is effected by normal steering wheel for turns under 15°; turns over 15° are negotiated by the combined action of turning the front wheels and braking the appropriate epicyclic-drive sprocket by means of the steering brakes mounted on the driving shaft.

The pneumatic-tired front wheels are of the disk type and are fitted on a normal type axle suspended by a single transverse semi-elliptic spring. Two hydraulic shock absorbers are fitted. Each of the flexible rear tracks is borne by a driving sprocket at the front end and an idler wheel at the rear, while between these are five pairs of pressed-steel, rubber-tired bogie wheels.

SPECIFICATIONS

Weight         3.7 tons
Length 15 ft., 7 ins.
Width 6 ft.
Height 5 ft., 3 ins.
Ground clearance 13 ins.
Tread centers 5 ft., 2 ins.
Ground contact 4 ft., 6 ins.
Width of track 9.4 ins.
Track links 41
Pitch of track 6.25 ins.
Fording depth 27 ins.
Theoretical radius of action
     Roads 176 miles
     Cross-country 93 miles
Speed
     Roads 40 m.p.h.
     Cross-country 25 m.p.h.
Trailer load 1.1 ton
Engine Maybach HL 42 TRKM—100 hp.
Transmission 4 forward speeds, 1 reverse, high and low range
Steering Over 15° epicyclic
Crew 7

German: p. 51

Motor-Karrete (Austro-Daimler) ADMK: Wheeled/Tracked Reconnaissance Vehicle

Motor-Karrete (Austro-Daimler) ADMK: Wheeled/Tracked Reconnaissance Vehicle

The German wheeled/tracked reconnaissance vehicle is particularly effective in steep and hilly terrain, and in swamps and marshy lowlands where high traction and light weight are desirable. The personnel-carrying capacity is six, and it is capable of towing a trailer load of 2,640 pounds. The Motor-Karrete is capable of operating as a wheeled vehicle and will turn on a radius of 27 feet. It can also operate as a half track vehicle with a turning radius of 8 feet, 2 inches. As a full track vehicle its turning radius is 6 feet, 8 inches.

The three adaptations are accomplished by raising or lowering the front wheels which appear to be mounted on a bell-crank, torsion-type front axle, while the rear wheels (when dismounted from the rear suspension) are mounted on a false axle supported above the rear of the vehicle. The dry-pin steel track is guided from the outside center over a single-tooth front sprocket and a single-flange rear idler. Four small bogie wheels articulate in pairs on a common structure attached to the rear axle. The suspension includes semi-elliptic spring over the rear axle, while rotation of the vehicle is stabilized by a quarter elliptic spring from the front sprocket axle.

The 20 hp. engine is mounted in the rear. The fuel tank capacity is 10 gallons and fuel consumption on highways is 14 m.p.g.—on average terrain 6.8 m.p.g.

The net weight of the vehicle is 3,806 pounds; combat weight, 5,060 pounds. The weight distribution is: front axle 990 pounds; rear axle 4,070 pounds.

SPECIFICATIONS

Weight        3,806 lb.
Length 12 ft.
Width 5 ft.
Height 4 ft., 9 ins.
Ground clearance Unknown
Tread centers (wheel, 50 ins.), (track, 34 ins.)
Ground contact 53 ins.
Width of track 7.5 ins. (wheel, 5.5 ins.)
Track links 70
Pitch of track
Fording depth 20 ins.
Theoretical radius of action
     Roads 124 miles
     Cross-country 68 miles
Speed
     Roads
     Cross-country
Armor
     Front plate
     Sides
Armament
Ammunition (rds.)
Engine 20 hp.
Transmission
Steering
Crew 6

German: p. 49

s. Zgkw. 18t (Sd. Kfz. 9): Heavy Semitrack Prime Mover

s. Zgkw. 18t - Sd.Kfz. 9: Heavy Semitrack Prime Mover

This 18-ton vehicle is the heaviest of the German semitrack prime movers. It is often used by the Germans in the evacuation of their damaged tanks. It has a net weight of 16.8 tons and a combat weight of 19.8 tons. Its personnel capacity is 8, including driver and helper, and it can tow a trailer load of 20 tons. The maximum highway range of action is 160 miles on a fuel tank capacity of 72 gallons. Its weight distribution is as follows: front wheels, 5,289 pounds; track, 34,320 pounds.

The front suspension is comprised of a tubular floating axle mounting two pneumatic-tired, heavy duty wheels with transverse leaf springing. The track suspension is the standard semitrack system consisting of straddle-mounted rubber-tired bogie wheels sprung on torsion bars housed in cross tubes; front sprocket, rear idler, and needle-bearing track.

The power plant is the V-12 cylinder, Maybach gasoline engine rated at 230 horsepower. The transmission provides four speeds forward and one reverse with high and low range. Steering is effected by normal steering wheel and an epicyclic-controlled differential drive for the track with a brake linkage connected to the front-wheel steering system.

In addition to the electric starter, this vehicle is also equipped with a Bosch airplane-type inertia starter located on the right side of the engine.

A power winch is located at the rear, with facilities for passing the cable beneath the vehicle and out the front end. The winch-driving mechanism and the drum are located near the center of the chassis. The drum is horizontal and is driven by a propeller shaft from the rear of the transmission. The hub of the winch-driving mechanism is fitted with a slide gear which enables the operator to engage and disengage the winch from the rear of the vehicle. The winch-lifting capacity is 7.7 tons.

SPECIFICATIONS

Weight         16.8 tons
Length 27 ft.
Width 8 ft., 6 ins.
Height 9 ft., 1 in.
Ground clearance 21 ins.
Tread centers (wheels, 82 ins.; track, 78 ins.)
Ground contact 9 ft., 4 ins.
Width of track 17.3 ins.
Track links 47
Pitch of track
Fording depth 30 ins.
Theoretical radius of action
     Roads 161 miles
     Cross-country 62 miles
Speed
     Roads
     Cross-country
Armor
     Front plate
     Sides
Armament
Ammunition
Engine Maybach HL 98 TUK, 230 hp.
Transmission 4 speeds forward, 1 reverse, high and low range
Steering Normal and epicyclic-controlled differential
Crew 8

German: p. 56

l. Kett. Schlp. (o): Light Tractor

l. Kett. Schlp. (o): Light TractorGerman nomenclature: leichter Ketten­schlepper (o).

English designation: Light tractor (stan­dard commercial vehicle).

SPECIFICATIONS
Net weight       3,500 kg       7,716 lb.
Pay load
Gross weight
Weight: Front axle
Weight: Rear axle
Length (overall) 3,100 mm 10 ft., 2 ins.
Width (overall) 1,550 mm 5 ft., 1 in.
Height (overall) 2,300 mm 7 ft., 6 ins.
Ground clearance 310 mm 12 1/2 ins.
Tread centers 1,300 mm 4 ft., 3 ins.
Track contact 0.85 m 33 1/2 ins.
Track width 300 mm 11 7/8 ins.
Angle of approach 40°
Angle of departure 65°
Seating capacity
Fording depth 700 mm 27 ins.
Climbing ability 30°
Overturn gradient (lengthwise) 45°
Overturn gradient (crosswise) 40°
Turning radius 7 meters 22 ft., 11 ins.
Trailer load 5,000 kg 11,023 lb.
Lifting power of winch 3,000 kg 6,614 lb.
Engine horsepower 45 c-v 44.4 hp
Piston displacement 5,500 cu cm 330 cu. ins.
Fuel tank capacity 65 liters 17.2 gal.
Highway fuel consumption6.7 m.p.g.
Average terrain fuel consumption4.7 m.p.g.

German: p. 74.57

s. Rd. Schlp. (o): Heavy Tractor

s. Rd. Schlp. (o): Heavy TractorGerman nomenclature: schwerer Rad­schlep­per (o).

English designation: Heavy tractor (stan­dard commercial vehicle).

SPECIFICATIONS
Net weight       6,450 kg       23,147 lb.
Pay load
Gross weight
Weight: Front axle 2,370 kg 7,209 lb.
Weight: Rear axle 4,170 kg 9,193 lb.
Length (overall) 5,545 mm 18 ft., 2 ins.
Width (overall) 2,460 mm 8 ft.
Height (overall) 2,420 mm 7 ft., 11 ins.
Ground clearance 270 mm 10 5/8 ins.
Tread centers 1,908 mm 6 ft., 2 ins.
  1,836 mm 6 ft.
Wheelbase 3,000 mm118 ins.
Wheel width 300 mm11 7/8 ins.
Angle of approach 40°
Angle of departure 17°
Seating capacity 5
Fording depth
Climbing ability
Overturn gradient (lengthwise)50°
Overturn gradient (crosswise)35°
Turning radius 10.5 meters 34 ft., 5 ins.
Trailer load 15,000 kg 33,069 lb.
Engine horsepower 100 c-v 98.6 hp
Piston displacement 8,553 cu cm 513 cu. ins.
Fuel tank capacity 350 liters 92.4 gal.
Highway fuel consumption5.2 m.p.g.
Average terrain fuel consumption3.9 m.p.g.

German: p. 74.57