DRG Class 99.73–76
 | This article includes a improve this article by introducing more precise citations. (July 2016) ) |
| DRG Class 99.73-76 | |
|---|---|
Deutsche Reichsbahn (GDR) | |
| Numbers | DRG/DR: 99 731 – 99 762 DR from 1970: 99 1731 – 99 1762 |
| Retired | from 1945 |
The German Class 99.73-76 engines were standard locomotives (
History
Although there was already a very powerful locomotive for operations on the mountain lines in the Ore Mountains of eastern Germany in the shape of the ten-coupled ex-Saxon Class 99.67-71, there was a further requirement for an even more powerful class. So it fell to the newly formed Reichsbahn railway division of Dresden to procured an Einheitslok with a 750 mm (2 ft 5+1⁄2 in) track gauge. The Standardisation Office of the German Locomotive Union in Berlin-Tegel prepared the design for this class.
The first series of 13 locomotives was built by the Sächsische Maschinenfabrik, previously Richard Hartmann, in Chemnitz. According to the supply agreement, the Sächsische Maschinenfabrik was supposed to deliver more locos, but as a result of its bankruptcy and liquidation in 1930, this order was transferred to the Berliner Maschinenbau AG (BMAG), previously Schwartzkopff. In 1928, seven locomotives were supplied by BMAG and another twelve followed in 1933.
The locomotives were very modern for their time, and were similar in design to the standard gauge Einheitslokomotiven. The engines fulfilled expectations; by
In 1945, ten locomotives had to be given to the Soviet Union as
Technical features
These ten-coupled locomotives had
As was typical on all Einheitslokomotiven, the engine had a Knorr
Because
As the first engines were delivered in 1928, it was already planned to replace the obsolete funnel couplers by Scharfenberg couplers. So the first locomotives still had funnel couplers to begin; these were later swapped for the new couplings without any difficulty.
Operations
At the outset single locomotives were even used in the
Today the Class 99.73-76 locomotives are stationed in
See also
Sources
- Ebel, Jürgen U.; Seiler, Bernd (1994). Die Baureihe 99.73-79 – Einheitslok auf schmaler Spur (in German). Freiburg: EK-Verlag. ISBN 3-88255-119-4.
- Preuß, Erich; Preuß, Rainer (1998). Schmalspurbahnen in Sachsen (in German). Stuttgart: transpress Verlag. ISBN 3-613-71079-X.
- Weisbrod, Manfred; Petznik, Wolfgang (1981). Dampflokomotiven deutscher Eisenbahnen, Baureihe 97–99 (EFA 1.4) (in German) (2nd ed.). Düsseldorf: Alba. pp. 173–176, 213. ISBN 3-87094-087-5.
