Bavarian GtL 4/4
The Bavarian Class GtL 4/4 engines were superheated steam locomotives in service with the Royal Bavarian State Railways for duties on branch lines.
History
Bavarian GtL 4/4 locomotives were supplied by Krauss to the state railway. In 1911, two were delivered and, in 1914, they were followed by a further eleven engines.As a result of their positive experience with the GtL 4/4 the Bavarian Group Administration of the Deutsche Reichsbahn decided to procure more examples of this locomotive. From 1921 to 1927 Krauss supplied another 108 engines that were somewhat heavier and differed from the original versions in the design of the driver's cab. The last 17 locomotives from 1927 were even heavier than the previous engines, which was due to the increased size of water and coal tanks. Boiler, drive and power remained unchanged over the entire procurement period.
The locomotives were designated as DRG Class 98.8-9 by the Reichsbahn, and were given the numbers 98 801 to 98 917.
GtL 4/5
Although the GtL 4/4 proved very successful, the Deutsche Reichsbahn decided to order a modified, faster version. This resulted in the DRG Class 98.10, unofficially called the GtL 4/5, which had a trailing axle in the shape of a Krauss-Helmholtz bogie. A total of 45 were built between 1930 and 1933.Despite the trailing axle the top speed could only be raised to 45 km/h so the Reichsbahn decided to rebuild existing GtL 4/4s, this time adding a leading Bissel axle. Confusingly the unofficial Bavarian notation for these was also GtL 4/5, but the Reichsbahn classified them as the DRG Class 98.11, which had a top speed of 55 km/h. A total of 29 were converted in this way.