Bavarian B IX (Ostbahn)
Encyclopedia
| B IX (Bayern) | |||
|---|---|---|---|
| Number(s): | 1081–1092 | 1069–1080 | |
| Quantity: | 12 | 12 | |
| Manufacturer: | Keßler, Maffei Joseph Anton von Maffei Joseph Anton von Maffei was a German industrialist. Together with Joseph von Baader and Baron Theodor Freiherr von Cramer-Klett , Maffei was one of the three most important railway pioneers in Bavaria.-Early life:Joseph Anton Maffei was born in Munich, the son of an Italian tradesman from Verona... |
||
| Year(s) of manufacture: | 1857ff. | 1859ff. | |
| Retired: | 1926 | 1903 | |
| 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... ): |
4-2-0 | 2-2-2 | |
| 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... ): |
2A n2 | 1A1 n2 | |
| Rail gauge Rail gauge Track gauge or rail gauge is the distance between the inner sides of the heads of the two load bearing rails that make up a single railway line. Sixty percent of the world's railways use a standard gauge of . Wider gauges are called broad gauge; smaller gauges, narrow gauge. Break-of-gauge refers... : |
1,435 mm | ||
| Length over buffers Buffer (rail transport) A buffer is a part of the buffers-and-chain coupling system used on the railway systems of many countries, among them most of those in Europe, for attaching railway vehicles to one another.... : |
13.710 mm | 11,850 mm | |
| Service weight: | 25.9 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... : |
10.5 t | ||
| Top speed: | 90 km/h | ||
| Driving wheel Driving wheel On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons... diameter: |
1.828 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: |
1.220 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: |
1.220 mm | ||
| No. of cylinders: | 2 | ||
| Cylinder bore: | 394 mm | ||
| Piston stroke: | 610 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... : |
6 bar | ||
| Grate area: | 1,13 m² | 1.12 m² | |
| Evaporative heating area: | 83,20 m² | 80.00 m² | |
| Tender: | 3 T 7 | ||
| Water capacity: | 7.0 m³ | ||
The Bavarian Class A, later B IX were German steam locomotives with the Bavarian Eastern Railway
Bavarian Eastern Railway
The Royal Bavarian Eastern Railway Company or Bavarian Ostbahn was founded in 1856...
(Bayerische Ostbahn).
CramptonCrampton locomotiveA Crampton locomotive is a type of steam locomotive designed by Thomas Russell Crampton and built by various firms from 1846. The main British builders were Tulk and Ley and Robert Stephenson and Company....
version
The engines had an external frameLocomotive frame
A locomotive frame is the structure that forms the backbone of the railway locomotive, giving it strength and supporting the superstructure elements such as a cab, boiler or bodywork. The vast majority of locomotives have had a frame structure of some kind...
with outside drive and valve gear
Valve gear
The valve gear of a steam engine is the mechanism that operates the inlet and exhaust valves to admit steam into the cylinder and allow exhaust steam to escape, respectively, at the correct points in the cycle...
. They had the smallest wheel diameter (1,828 mm) of any locomotive of this type in the whole of Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
. Between 1869 and 1871 all the engines were rebuillt in Regensburg
Regensburg
Regensburg is a city in Bavaria, Germany, located at the confluence of the Danube and Regen rivers, at the northernmost bend in the Danube. To the east lies the Bavarian Forest. Regensburg is the capital of the Bavarian administrative region Upper Palatinate...
and were given a 1 B axle arrangement
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...
. They were then given locomotive numbers 1081–1092.
StephensonStephenson valve gearThe Stephenson valve gear or Stephenson link or shifting link is a simple design of valve gear that was widely used throughout the world for all kinds of steam engine. It is named after Robert Stephenson but was actually invented by his employees....
version
The second series of this class was built to a StephensonStephenson valve gear
The Stephenson valve gear or Stephenson link or shifting link is a simple design of valve gear that was widely used throughout the world for all kinds of steam engine. It is named after Robert Stephenson but was actually invented by his employees....
design. They did not differ greatly in terms of boiler and driving gear from the locomotives of the first series. These engines were also converted in Regensburg between 1870 and 1871 to vehicles with a 1B axle formula. In addition 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:...
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...
was raised from 6 to 10 bar. They were then given locomotive numbers 1069–1080.
External links
- There is a relevant English-language forum at Railways of Germany