Prussian G 8.1
Encyclopedia
The Prussian G 8.1 was a heavier, stronger development of the G 8
Prussian G 8
The Prussian Class G 8 locomotives were eight-coupled, superheated, freight locomotives operated by the Prussian state railways. There were two variants: the G 8 built from 1902 with a 14 tonne axle load and the "reinforced G 8" built from 1913 with a 17 tonne axle load...

 and was initially referred to as a 'strengthened standard class' (Verstärkte Normalbauart).

History

The engines were built by Robert Garbe
Robert Garbe
Robert Hermann Garbe was a German railway engineer and chief engineer of the Berlin division in the Prussian state railways from 1895 to 1917...

 from 1913 and 1921, and were the most numerous state railway locomotives in Germany. The boiler
Boiler
A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications.-Materials:...

 was larger than that of the G 8 and the loco was deliberately designed to be heavier, so that it could haul even the heavier trains without sanding, due to its higher adhesive weight. Because it had a high axle load
Axle load
The axle load of a wheeled vehicle is the total weight felt by the roadway for all wheels connected to a given axle. Viewed another way, it is the fraction of total vehicle weight resting on a given axle...

, the G 8.1 could however only be used on main lines. In addition to its employment with heavy goods traffic, it was later used for heavy pusher
Bank engine
A bank engine or helper engine or pusher engine is a railway locomotive that temporarily assists a train that requires additional power or traction to climb a grade...

 duties as well.

A total of 4,958 engines alone were made for the Prussian state railways
Prussian state railways
The term Prussian state railways encompasses those railway organisations that were owned or managed by the State of Prussia...

 and, later, the Deutsche Reichsbahn
Deutsche Reichsbahn-Gesellschaft
The Deutsche Reichsbahn – was the name of the German national railway created from the railways of the individual states of the German Empire following the end of World War I....

. The Imperial Railways in Alsace-Lorraine
Imperial Railways in Alsace-Lorraine
The Imperial Railways in Alsace-Lorraine were the first railways owned by the German Empire.They emerged in 1871, after France had ceded the region of Alsace-Lorraine to the German Empire under the terms of the peace treaty following the Franco-Prussian War...

 were given 137 (see the Alsace-Lorraine G 8.1
Alsace-Lorraine G 8.1
The Alsace-Lorraine Class G 8.1 was a superheated, goods train, steam locomotive with four driving axles, and was based on the Prussian G 8.1. There were no design differences between the two...

), 10 went to the Grand Duchy of Mecklenburg Friedrich-Franz Railway
Grand Duchy of Mecklenburg Friedrich-Franz Railway
The Grand Duchy of Mecklenburg Friedrich-Franz Railway was the state railway company in Mecklenburg-Schwerin and Mecklenburg-Strelitz...

, 50 to the German military railways in the First World War, 6 or 10 to the Gewerkschaft Deutscher Kaiser coal mine at Duisburg and 185 were sold abroad (Poland
Poland
Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

, Romania
Romania
Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

 and Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

).

In 1925 the Reichsbahn took over 3,121 Prussian locomotives as Class 55.25–56 with operating numbers 55 2501–5622 (less 55 3367). The twelve Mecklenburg engines (two of which had been bought in 1920 by the Prussian state railways) were incorporated as Class 55.58 with the numbers 55 5801–5810 and 55 5851–5852. Included amongst the Prussian locomotives were also the ten G 8.1 from the Imperial Railways in Alsace-Lorraine. In 1935 43 more locomotive came into the Reichsbahn fleet from the Saarland as numbers 55 5623–5665, the last of which came originally from the Alsace-Lorraine too. In the Second World War numerous locomotives from Poland and Lithuania were also designated as Class 55 engines. The engines taken over from Belgium were given the numbers 55 5666–5699. After 1945 the DR in East Germany added a further locomotive from Poland as the 55 5898 and several from Belgium and Frances as 55 7251–7260 and 55 8170.

Between 1934 and 1941 a total of 691 G 8.1s were fitted with a leading axle in order to raise the top speed and to reduce the average axle load
Axle load
The axle load of a wheeled vehicle is the total weight felt by the roadway for all wheels connected to a given axle. Viewed another way, it is the fraction of total vehicle weight resting on a given axle...

. The converted locomotives were redesignated as DRG Class 56.2–8
DRG Class 56.2–8
Between 1934 and 1941 the Deutsche Reichsbahn converted a total of 691 former Prussian-built Class 55.25–56 steam locomotives; the result was the DRG Class 56.2–8. The carrying axle enabled higher speeds and the engine could even be used as a passenger train locomotive. In addition the average...

.
More than 1,000 engines remained after the end of the Second World War. In 1968 the DR still had 150 vehicles and the Deutsche Bundesbahn
Deutsche Bundesbahn
The Deutsche Bundesbahn or DB was formed as the state railway of the newly established Federal Republic of Germany on September 7, 1949 as a successor of the Deutsche Reichsbahn-Gesellschaft '...

 50, which they reclassified as Class 055 from 1968. The last G 8.1 with the DB, number 055 538-3, was taken out of service on 21 December 1972.

The vehicles were coupled with Prussian 3 T 16,5, 3 T 20 and 2'2' T 21,5 tenders
Tender locomotive
A tender or coal-car is a special rail vehicle hauled by a steam locomotive containing the locomotive's fuel and water. Steam locomotives consume large quantities of water compared to the quantity of fuel, so tenders are necessary to keep the locomotive running over long distances. A locomotive...

.

Number 55 3345 (ex Cassel 5159) remains preserved. It was built in 1915 by Henschel and is found today in the Bochum Dahlhausen Railway Museum
Bochum Dahlhausen Railway Museum
150px|right|thumb|[[The Industrial Heritage Trail|Ruhr Industrial Heritage Trail]]The Eisenbahnmuseum Bochum-Dahlhausen is a railway museum situated south of the city of Bochum in the state of North Rhine-Westphalia, Germany...

.

External links

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