Palatine P 5 DRG Class 77.0	Palatine Pt 3/6 Bavarian Pt 3/6 DRG Class 77.1
Number(s):	Palatinate: 310 - 321 DRG 77 001–012	Palatinate: 330 - 338, 401-410 Bavaria: 6101 - 6110 DRG 77 101–129
Quantity:	12	29
Manufacturer:	Krauss
Years of Manufacture:	1908	1911–1923
Retired:	1951	1956
Wheel arrangement (Whyte Whyte notation The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte and came into use in the early twentieth century encouraged by an editorial in American Engineer and Railroad Journal... ):	2-6-4T
Axle arrangement (UIC) UIC classification The UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much... :	1'C2' n2t 1925 Conversion to superheating	1'C2' h2t
Sub-class:	Pt 36.16
Length over buffers:	13,140 mm	13,460 mm
Gauge:	1,435 mm
Service weight:	92.9 t	91.1–94.8 t
Adhesive weight Adhesive weight Adhesive weight is the amount of a locomotive's weight that is applied to the driving wheels and so capable of delivering traction. The more weight applied to the driving wheels, the greater the locomotive's ability to haul a load. But if the weight on the driving wheels exceeds the axle load of... :	50,0 t	48.3–48.8 t t
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... :	16,7 t	16,1–16,3 t
Top speed:	90 km/h
Indicated power:	633 kW
Driving wheel Driving wheel On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...  diameter:	1,500 mm
Leading wheel Leading wheel The leading wheel or leading axle of a steam locomotive is an unpowered wheel or axle located in front of the driving wheels. The axle or axles of the leading wheels are normally located in a truck...  diameter:	960 mm
Trailing wheel Trailing wheel On a steam locomotive, a trailing wheel or trailing axle is generally an unpowered wheel or axle located behind the driving wheels. The axle of the trailing wheels was usually located on a trailing truck...  diameter:	960 mm
No. of cylinders Cylinder (steam locomotive) The cylinders of a steam locomotive are the components that convert the power stored in the steam into motion.Cylinders may be arranged in several different ways.-Early locomotives:... :	2
Cylinder bore:	530 mm
Piston stroke:	560 mm
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:...  overpressure Overpressure The term Overpressure is applied to a pressure difference, relative to a "normal" or "ambient" pressure, in various circumstances:* In engineering: the pressure difference over the wall thickness of a pressure vessel... :	13 bar
Grate area:	2.34 m³
Superheater Superheater A superheater is a device used to convert saturated steam or wet steam into dry steam used for power generation or processes. There are three types of superheaters namely: radiant, convection, and separately fired...  area:	35.00 m²
Evaporative heating area:	109.94 m²	110.94 m²

The six-coupled P 5 of the Palatinate Railway

Palatinate Railway

The Palatinate Railway or Pfalzbahn was an early German railway company in the period of the German Empire prior to the First World War. It was formed on 1 January 1870, as the United Palatinate Railway based in Ludwigshafen, by the amalgamation of the following railway companies:*The Palatine...

 (Pfalzbahn) was to replace the four-coupled locomotives in the Palatinate. They were given a leading Krauss-Helmholtz bogie

Krauss-Helmholtz bogie

A Krauss-Helmholtz bogie is a mechanism used on a steam locomotive, where a carrying axle is connected to a coupled axle via a lever such that when the carrying axle swings to the side on going round a curve, it causes the coupled axle to move sideways in the opposite direction...

 and a trailing bogie

Bogie

A bogie is a wheeled wagon or trolley. In mechanics terms, a bogie is a chassis or framework carrying wheels, attached to a vehicle. It can be fixed in place, as on a cargo truck, mounted on a swivel, as on a railway carriage/car or locomotive, or sprung as in the suspension of a caterpillar...

 in order to achieve satisfactory weight distribution.

The firm of Krauss

George Krauss

George, Baron von Krauss was a German industrialist and the founder of the Krauss Locomotive Works in Munich, Germany and Linz, Upper Austria...

 delivered twelve examples in 1908. One notable feature was the particularly large coal and water tanks requested by the Railway. 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....

 took all the vehicles over and converted them to superheated engines. After the end of the Second World War nine were left. Most of them were sold to private railways. The last one owned by 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 '...

 was retired in 1951.

After the Palatine P 5 had proved successful, the Royal Bavarian State Railways

Royal Bavarian State Railways

As a nation-state, Germany did not come into being until the creation of the German Empire in 1871 from the various German-speaking states such as Prussia, Bavaria, Saxony, Baden and Württemberg. By then each of the major states had formed its own state railway and these continued to remain...

 (Königlich Bayerische Staatsbahn) decided to procure more of this class in a more powerful version. As a result the Palatine Pt 3/6 was built from 1911. A total of 19 engines were procured. In 1923 a further 10 of these two-cylinder superheated steam engines were ordered for Bavaria

Bavaria

Bavaria, formally the Free State of Bavaria is a state of Germany, located in the southeast of Germany. With an area of , it is the largest state by area, forming almost 20% of the total land area of Germany...

 as the Bavarian Pt 3/6. They were deployed on the express train routes between Garmisch-Partenkirchen

Garmisch-Partenkirchen

Garmisch-Partenkirchen is a mountain resort town in Bavaria, southern Germany. It is the administrative centre of the district of Garmisch-Partenkirchen, in the Oberbayern region, and the district is on the border with Austria...

 and Munich

Munich

Munich The city's motto is "" . Before 2006, it was "Weltstadt mit Herz" . Its native name, , is derived from the Old High German Munichen, meaning "by the monks' place". The city's name derives from the monks of the Benedictine order who founded the city; hence the monk depicted on the city's coat...

. All the engines were taken over by the 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 Bavarian versions being given the operating numbers 77 110–119. One machine was lost during the Second World War. The Deutsche Bundesbahn took over 27 engines and retired them by 1954. One locomotive remained with the East German DR and was retired in 1956.

Literature

Horst J. Obermayer: Taschenbuch Deutsche Dampflokomotiven.Regelspur. 2. Auflage, Franckh'sche Verlagshandlung, Stuttgart 1971, ISBN 3-440-03643-X

See also

• Royal Bavarian State Railways
  Royal Bavarian State Railways
  As a nation-state, Germany did not come into being until the creation of the German Empire in 1871 from the various German-speaking states such as Prussia, Bavaria, Saxony, Baden and Württemberg. By then each of the major states had formed its own state railway and these continued to remain...
  
  
• Palatinate Railway
  Palatinate Railway
  The Palatinate Railway or Pfalzbahn was an early German railway company in the period of the German Empire prior to the First World War. It was formed on 1 January 1870, as the United Palatinate Railway based in Ludwigshafen, by the amalgamation of the following railway companies:*The Palatine...
  
  
• List of Bavarian locomotives and railbuses
• List of Palatine locomotives and railbuses

External links

• There is a relevant English-language forum at Railways of Germany