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From Wikipedia, the free encyclopedia

Tatra 111
BAHNA 2018 - 101 crop.jpg
Overview
ManufacturerTatra
Production1942-1962
DesignerHans Ledwinka
Body and chassis
ClassHeavy truck
Body styleConventional
Related
  • Tatra 141
  • Tatra 147
Powertrain
EngineSee below
Transmission4-speed manual x 2-speed transfer case
Chronology
PredecessorTatra 81
SuccessorTatra 138
Engine V910
T111Engine.jpg
Overview
ManufacturerTatra
Also calledV910
Layout
Configuration75° V12
Displacement14.8 L (903 cu in)
Cylinder bore110 mm (4.3 in)
Piston stroke130 mm (5.1 in)
Block materialCast iron
ValvetrainOHV
Compression ratio16.5:1
Combustion
Fuel systemDirect injection 2x inline injection pumps 6 elements each
Fuel typeDiesel
Cooling systemAir-cooled
Output
Power output180–210 hp (132.5 kW-158kW) @ 1800–2250 rpm
Torque output726 N⋅m (535 ft⋅lbf) @ 1400–1600 rpm

The Tatra 111 was a truck produced in Czechoslovakia by the Tatra company.

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Transcription

Contents

History

The T111 was developed and manufactured during World War II as a heavy truck for use by the Wehrmacht. Production started in 1942 and continued for twenty years, ending in 1962 when it was replaced by the Tatra 138. Despite being built for the Nazi war machine, the vehicle ultimately played an important role after the war ended. The Tatra 111 contributed significantly to the rebuilding effort during the postwar era, mainly in Eastern Europe and the USSR. To its chief designer, however, it brought charges of treason and collaboration with the Nazi regime after the communist takeover of Czechoslovakia and contributed to the imprisonment of Tatra's design guru Hans Ledwinka.

Design and technology

The design was based on the proven Tatra concept of a backbone tube chassis construction with swing half axles, a modular gearbox and differential assemblies. The main advantages of the central load carrying backbone tube are its high torsion and bend strength, which protects the truck body against load stresses. The secondary advantage is that it houses all important parts of the drivetrain. Due to its torsional stiffness and use of differentials locks the vehicle had exceptional offroad capabilities. Of note was the ability to use a cranking handle to start the engine.

Engine

Model V910 - the first Tatra air-cooled powerplant V12 75-degree V developed from Tatra V850 engine intended for use in Tatra 103 (Sd.Kfz. 234 Puma). The engines had power output of 210 horsepower at 2250 RPM mainly for war use (An average life expectancy during combat for Wehrmacht was 6 hours.) which was later reduced to 180 hp at 1800 rpm to increase reliability. The engine has three camshafts and originally was cooled by two covered chain-driven cooling fans and later belt drive (marked T111A).

Chassis

Central backbone tube, front and rear axles with independent swing half axles. Front axle suspended on quarter elliptic leaf springs, rear axles suspended on half elliptic longitudinal leaf spring. The service brakes were air all-round drums, parking brake had mechanical actuation on the rear end of backbone tube output shaft via a rotating drum.

  • Front track = 2,080 mm (81.9 in)
  • Rear track = 1,800 mm (70.9 in)
  • Wheelbase = 4,175 mm (164.4 in)+1,200 mm (47.2 in)
  • Road clearance = 300 mm (11.8 in)

Transmission

Bodywork

The cab originally used wood for its construction due to strategic unavailability of steel during the war, in later years the wooden frame was steel plated and the last models used an all-steel cabin. The vehicle was capable of a top speed of approximately 65 km/h (40 mph). The maximum cargo capacity was 10.3 tonnes and it had the ability to tow up to 22 tonnes trailer.

T 111 C army tanker
T 111 C army tanker

Production

The Tatra 111 was in production for 20 years, with a total of approximately 34,000 units made. The T111 engine was widely used in the variety of other vehicles such as a heavy tractor T141, a railway car M 131, airport tugs and pontoon bridges used by the army. The engine was also "halved" to create an inline 6-cylinder version for the Praga V3S 6x6 light utility military truck and civilian Praga S5T light truck. Based on the T111 V12 engine was created V8 version for the T128 4x4 truck for the Czechoslovak armed forces, designed mostly from the T111 parts. T111 main product range was in flatbed, tipper, tanker and crane configuration.

  • Models
T111 R - Flatbed
T111 NR - Flatbed with auxiliary gearbox powered winch
T111 N Special - Flatbed with foldable sides, winch military specs
T111 S - Three-way tipper with wooden sides
T111 S2 - All-steel three-way tipper heavy duty
T111 C - Tanker
T111 D - Bodybuilders chassis

Legacy

The Tatra T111 exploits in Siberia had earned its reputation, and its legendary reliability contributed to its iconic status among those who had driven and lived in those conditions. The T111 concept and technology continued its evolution in following years with a successful line of Tatra truck models.

References

This page was last edited on 8 November 2019, at 16:30
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