Prussian G 8
| G 8 (Prussia) DR series 55.16–22 ÖBB series 755 PKP Tp3 SNCF 040D ČSD series 424.0 |
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 Prussian G 8
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| Numbering: | DR 55 1601-2268 |
| Number: | 1,054 |
| Year of construction (s): | 1902-1913 |
| Retirement: | 1969 |
| Type : | D h2 |
| Genre : | G 44.14 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 16,938 mm (3 T 12) / 17,968 mm (3 T 16.5) |
| Service mass: | 58.5 t |
| Friction mass: | 58.5 t |
| Wheel set mass : | 14.7 t |
| Top speed: | 55 km / h |
| Indexed performance : | 809 kW |
| Driving wheel diameter: | 1,350 mm |
| Cylinder diameter: | 575/590/600 mm |
| Piston stroke: | 660 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 2.25 / 2.35 m² |
| Superheater area : | 31.7 / 41.2 m² |
| Evaporation heating surface: | 135.2 / 140.0 m² |
| Tender: | pr 3 M 12, 3 M 15, 3 M 16.5 pr 2'2 'M 16 |
| Water supply: | 12.0 / 15.0 / 16.0 / 16.5 m³ |
The class G 8 locomotives were quadruple coupled, superheated steam freight locomotives without running axles of the Prussian State Railways . There were two variants, the G 8 built from 1902 with 14 t axle load and the "reinforced G 8" built from 1913 (later referred to as G 8.1 ) with 17 t axle load. With more than 5,000 units, the latter was the most popular regional railway locomotive ever built.
history
The G 8 was built between 1902 and 1913 by various manufacturers in a total of 1,054 copies. They were the first superheated steam freight locomotives in Prussia, which is why they initially suffered from a number of teething problems. Another problem was the limitation to 14 t axle load, which is why many components had to be made too weak to save weight. During the procurement period, changes were made to the locomotives again and again: The cylinder diameter was increased from 575 mm to 600 mm; the grate surface, the evaporation heating surface and the superheating heating surface have also been enlarged.
Seven machines have been equipped with direct current cylinders (stump type) on a trial basis . Ten more received a Lentz valve control. However, none of these variants was superior to the normal design.
The vehicles were with Tender senders equipped of types pr 3 T 12, T pr 3 16.5 and pr 2'2 'T 16th
The German Reichsbahn took over in 1925 as a series 55.16-22 still 656 locomotives than 55 from 1601 to 2256 in their renumbering plan , 1,935 additional twelve came from the railways of the Saar added than 55 from 2257 to 2268. During the Second World War , a few locomotives from Poland were added, the numbers of already retired vehicles between 55 1604 and 55 1710. 14 locomotives of the series were stationed in Landau in the 1930s .
Whereabouts
Deutsche Reichsbahn / Deutsche Bundesbahn
The DB received 205 copies after the Second World War, the DR 50. In the Federal Republic were the last vehicles in 1955, in the GDR out of service until the 1969th
Austria
After the Second World War, the 55 1681, 1881 and 2180 remained in Austria. The 55 1881 was returned to the Deutsche Bundesbahn in 1950. The two remaining machines formed the ÖBB series 755 at the ÖBB while retaining the serial number . The 755.2180 was retired in 1954, the 755.1681 only in 1957.
Poland
After the First World War, 83 locomotives of type G 8 remained in Poland , which were used by the PKP under the designation Tp 3 . Even after the Second World War , the 45 remaining machines were indispensable - the last of which was not retired until 1970.
Preserved locomotives
The locomotive No. 4981 Mainz (see picture) is still capable of rolling. The machine, built in 1913, was used to build the Baghdad Railway in Turkey during the First World War , where it was numbered 44,079 on the Turkish State Railway (TCDD). In 1987 the still operational locomotive was towed to Germany on its own wheels. It has been refurbished and largely restored to its original state. It is owned by the Darmstadt-Kranichstein Railway Museum .
literature
- Horst J. Obermayer: Paperback German steam locomotives . Franckh'sche Verlagshandlung, Stuttgart 1981, ISBN 3-440-03643-X .
- Manfred Weisbrod, Hans Müller, Wolfgang Petznick: Steam Locomotive Archive 2 . Transpress, Berlin 1978.
- Herbert Rauter, Manfred Weisbrod: Prussia Report Volume 6 . Hermann Merker Verlag, Fürstenfeldbruck 1992, ISBN 3-922404-30-8 .
