DRG Class 99.21
Encyclopedia
The only example of the German DRG Class 99.21 steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

 was built for the Wangerooge Island Railway
Wangerooge Island Railway
The single track Wangerooge Island Railway is an unelectrified narrow gauge railway with a rail gauge of 1,000 mm located on the East Frisian island of Wangerooge off the northwestern coast of Germany...

 on Wangerooge
Wangerooge
Wangerooge is one of the 32 Frisian Islands in the North Sea located close to the coasts of the Netherlands, Germany and Denmark. It is also a municipality in the district of Friesland in Lower Saxony in Germany.Wangerooge is one of the East Frisian Islands...

, one of the German-owned Friesian islands in the North Sea
North Sea
In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...

.

History

For hauling eight-wheeled passenger coaches a more powerful locomotive was needed. After the procurement of diesel locomotives in 1958 she remained for a time as a reserve engine. She carried number 99 211.

Today the locomotive is restored and is displayed as a monument on Wangerooge.

Technical Details

The inner frame
Locomotive 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...

 of the locomotive was also used as a water tank. She was designed as a wet steam locomotive. 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:...

 had two shell rings and 90 heating tubes. The drive was achieved via a Walschaerts valve gear driving the third axle. The wheels on the centre axle were made without flanges to improve curve running.

The engine could hold 0.6 tonnes of coal in side tanks either side of the boiler, and 1.8 m² of water in the frame and in an attachment to the coal bunker.
The engine was first equipped with electrical lighting in 1953.


Literature

  • Malte Werning: Wangerooge: Die Inselbahn und ihre Geschichte. Lokrundschau Verlag, Gülzow 1999, ISBN 3-931647-09-9

External links

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