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Tatra 148 S1 | |
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Overview | |
Manufacturer | Tatra |
Production | 1972–1982 |
Body and chassis | |
Class | Heavy truck |
Body style | Conventional |
Powertrain | |
Engine | V8 T2 928 E |
Transmission | 5-speed manual + 2-speed auxiliary gearbox |
Dimensions | |
Length | 7,295 mm (287.2 in) (T148 S3) |
Width | 2,500 mm (98.4 in) |
Height | 2,610 mm (102.8 in) (T148 S3) |
Curb weight | 10,800 kg (23,810 lb) (T148 S3) |
Chronology | |
Predecessor | Tatra 138 |
Successor | Tatra 815 |
T2 928 E | |
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Overview | |
Manufacturer | Tatra |
Layout | |
Configuration | V8 |
Displacement | 12.7 L; 773.0 cu in (12,667 cc) |
Cylinder bore | 120 mm (4.7 in) |
Piston stroke | 140 mm (5.5 in) |
Cylinder block material | Cast iron |
Cylinder head material | Aluminium alloy |
Valvetrain | OHV |
Compression ratio | 16.5:1 |
Combustion | |
Fuel system | Direct injection |
Fuel type | Diesel |
Cooling system | Air-cooled |
Output | |
Power output | 148.6 kW (199 hp) @ 2000 rpm |
Torque output | 800 N⋅m (590 ft⋅lbf) @ 1200 rpm |
Dimensions | |
Dry weight | 845 kg (1,863 lb) |
The Tatra 148 was a truck produced in Czechoslovakia by the Tatra company. [1]
In 1969 Tatra decided to modernize the existing T138 model with a number of improvements and design changes. The new model series was designated T148. Designers were tasked with the requirements of increasing engine power, vehicle speed and reliability as well as meeting stricter noise and emission regulations.
Yet again design continued with the proven central backbone tube construction and power train integrated into the central backbone tube as a modular concept in 4x4 and 6x6 configuration. A new feature was the inter-axle differential. The main advantages of the central load carrying backbone tube are in 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 drive train as well as it enables a concept of modular construction where designers and customers can specify 4 and 6 wheel drive, as well as various length wheelbase combinations.
The improved powerplant had its stroke lifted by 10 mm while the bore remained the same. The displacement was lifted to 12.6 litres which resulted in increased horsepower and torque. For military variants the engines were capable of running on alternative fuels (mixtures of diesel fuel, gasoline and or aviation kerosine fuel), albeit with a performance loss. The air cooling system was retained once again with the cooling fan driven via hydraulic clutch and engine oil temperature controlled. The fuel injection pumps featured different types variable or combination governors depending on the vehicle application.
Full length backbone tube with independent swing half axles in 4x4 and 6x6. On 6x6 models front axle suspension via adjustable torsion bars, rear axles suspended by longitudinal semi elliptic leaf springs. For 4x4 configuration rear axle was also suspended via torsion bars. Manually selectable front drive via homo-kinetic driveshafts, constant rear drive with the axle locks standard on all models.
The main gearbox was located behind the cabin and connected to the engine clutch housing via a short uni joint shaft (this design enables the so-called flat floor cabin) which was bolted together with the auxiliary gearbox to the backbone tube and formed the main part of the chassis structure. Options for rear power take off and winch drive were also possible. The main and auxiliary gears were fully synchronized except the first and reverse gear.
Full compressed air brakes acting on all wheels
The Tatra T148 featured an all-steel two door cabin with a fully suspended drivers seat and a bench seat for two occupants. Special military variants included a hatch opening on the roof. The vehicle featured an independent auxiliary cab heater and included cyclone pre-cleaners mounted on the front mudguards. The vehicle's top speed was approximately 80 km/h up to 26,000 kg (57,320 lb) GVM (T148 S3) or a total truck and trailer combination of up to 38,000 kg (83,776 lb) GCM (T148 S3).
Production of the T148 started in 1972 and ended in December 1982 where a total of 113,647 vehicles left the production line. Total export figures rested at approximately 63,700 units sold in 43 countries around the world, where traditionally the biggest export user was the USSR.
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