Škoda 706 RTO
| Škoda | |
|---|---|
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| Škoda 706 RTO | |
| Manufacturer |
Karosa (body) LIAZ (engine, chassis) SVA |
| design type |
City bus public bus coach |
| Production period | 1956 (prototype) 1958-1977 |
| axes | 2 |
| engine | Škoda 706 RT |
| power | 160 PS / 118 kW |
| length | 9.81 m |
| width | 2.5 m |
| height | 3.18 m |
| Wheelbase | 5450 mm |
| Seats | 20-39 |
| Standing room | 43-58 |
| Perm. total weight | 14,400 kg |
| Previous model | Škoda 706 RO |
| successor | Karosa series Š |
The Škoda 706 RTO is a Czechoslovak bus . The engine and chassis came from the commercial vehicle manufacturer LIAZ , and the buses were completed by Karosa . From 1958 onwards, SVA ( Státní výrobny autodílů , German : State Auto Parts Construction ) in Holýšov started producing vehicles of the predecessor Škoda 706 RO was dismantled and converted to the RTO-P type on this platform, which largely resulted in new vehicles. Between 1967 and 1972 SVA produced completely new buses of the type RTO-SVA and RTO-H. It was produced in different versions from 1958 to 1972, at Jelcz in Poland until 1977. It was developed from the Škoda 706 RO . The engine and axles were taken from the Škoda 706 RT truck , the chassis from the predecessor Škoda 706 RO. The structure was redesigned.
construction
A six-cylinder diesel engine with direct injection was used as the engine. With a displacement of 11.3 l of the engine delivered 117.6 kW at 1900 min -1 . The engine was located above the front axle. The engine drove the rear axle via a two-disc dry clutch, a five-speed manual gearbox and a differential. With this drive unit, the bus reached a top speed of 85 km / h.
The frame was riveted and the bus body was placed on it. The front and rear axles were rigid and suspended on leaf springs. The tires were mounted on Trilex rims . The steering was a mechanical worm gear with pneumatic assistance. The bus was braked on all four wheels with pneumatically operated drum brakes , supported by an engine brake . Due to the location of the engine, the front entry could only be installed behind the front axle, which made the bus only partially suitable for one-man operation.
The design of the superstructure was based on contemporary international models, such as the Super Vista superstructure by Duple . The windshield was a two-part, curved panoramic window that was interchangeable with the rear window. There were two heating systems that worked independently of one another: on the one hand, the internal heating, which was dependent on the engine, and an additional heating operated with diesel fuel. Two large roof flaps were used for ventilation. The luggage could be stowed in luggage nets over the seats. Some buses had a roof rack to accommodate larger items of luggage . The bus was built in four construction variants.
The bus was built under license at Jelcz in Poland from 1959 . The license agreement was concluded on December 6, 1958, the first twenty buses were delivered to Poland as a set of parts (CKD) the following year and assembled there. In 1960 two hundred buses were already assembled, with the aim of producing 1500 buses a year. The bodies, chassis and other equipment parts were always supplied by Škoda. Production of the Škoda 706 began at Jelcz in 1963 RTO MEX under license as Jelcz 272 MEX .
variants
Škoda 706 RTO CAR
The Škoda 706 RTO CAR was the intercity bus in the series. It offered 41 seats and 38 standing places, plus 7 + 2 auxiliary seats. The permissible total weight was 14,400 kg, the maximum speed 75 km / h. A two- or four-leaf folding door that can be electrically operated from the driver's seat was used here .
Škoda 706 RTO MTZ
The Škoda 706 RTO MTZ was the city bus of the series. He offered z. B. 20 seats and 58 standing places, plus two auxiliary seats. The permissible total weight was 14,400 kg, the top speed in favor of better acceleration was only 65 km / h. Two folding doors that can be operated electrically from the driver's seat were also used here. The name MTZ is derived from městský tuzemský (German: urban, inland).
Škoda 706 RTO LUX
The Škoda 706 RTO LUX was the touring coach of the series. Comfortably equipped for the time, it offered 38 seats. The permissible total weight was 12,800 kg, the maximum speed 85 km / h. Conventional, outward-opening hinged doors were used here. The structure had side panoramic windows, but was otherwise unchanged.
Škoda 706 RTO MEX
The Škoda 706 RTO MEX was the export version of the city bus. He was also called Jelcz 272 MEX built under license at Jelcz in Poland from 1963. At 10.87 m in length, it was slightly longer than the other buses.
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Articulated bus Škoda 706 RTO-K / Jelcz 021
Based on the 706 RTO, an articulated bus was designed in 1961 and built as a prototype, while a 706 RTO the part behind the rear axle was cut off and a trailer in the same style was attached there. The suspension of the three axles was different: the front axle had leaf springs, the driven middle axle air suspension and the steered axle in the trailer had air bellows suspension. Because the engine power was too weak for the greater weight of the articulated bus compared to the solo bus, it was decided not to build the bus. However, at Jelcz in Poland the articulated bus was built under license with an additional door at the rear until 1971, when it was called Jelcz 021.
Trailer Jelcz P-01
Based on the Škoda 706 RTO, a two-axle trailer for passenger transport with turntable steering was developed and built in Poland as the Jelcz P-01 , whose design was similar to that of the bus. It was used to increase the transport capacity mainly on overland routes, but also in local urban transport.
NO 80 semi-trailer
The NO 80 was created from the modified chassis of the Škoda 706 RTO and an almost unchanged bus structure. As a semi-trailer it was used by a Škoda 706 tractor RT pulled.
commitment
The appearance of the bus shaped the image of Czechoslovak - and, in the licensed version, Polish - streets in the 1960s and 1970s. In the 1960s, up to 3,000 buses were exported to the GDR each year.
Škoda 706 RTO MEX, chassis and body
Škoda 706 RTO CAR
Škoda 706 RTO CAR, interior view
Škoda 706 RTO MTZ
Škoda 706 RTO LUX
Škoda 706 RTO LUX, interior view
Škoda 706 RTO CAR with trailer Jelcz P-01
Interior view of a Škoda 706 RTO
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Web links
literature
- Jan Neumann: Škoda 706 RTO bus. Grada, 2011, ISBN 978-80-247-3437-8 .
- Werner Oswald: Motor vehicles of the GDR . Motorbuchverlag, Stuttgart 1998, ISBN 3-613-01913-2 .
- Commercial vehicles on the III. Czechoslovak Engineering Exhibition. In: Motor vehicle technology , issue 9/1957, pp. 346/347.
Individual evidence
- ↑ Škoda 706 RTO-K · Long and articulated . In: Jan Boyd, Oldtimer-Busse , Komet-Verlag, Cologne, p. 146