Prussian S 10 - Prussian S 10.1 (1914 Variant)

Prussian S 10.1 (1914 Variant)

Various disadvantages of the 1911 variant of the S 10.1, such as the difficulty of accessing the inside driving gear and the long steam lines between high and low-pressure cylinders, caused the Prussian state railways to have the design reworked.

The four cylinders were now located – as on the von Borries compound – on a slant; the twin-axle drive configuration was however retained. Even the boiler was modified; grate and firebox heating areas and the superheater were increased in size. Due to the altered location of the cylinders the running plate could be raised, which gave the locomotives a higher and more modern appearance, although in fact the height of the boiler axis above the rails remained unchanged.

In spite of these considerable differences, the 1914 variant was also designated as the S 10.1. These locomotives were the most powerful expresses in Prussia, and the Prussian state railways continued to live without Pacific locomotives. In 1914, one locomotive reached a speed of 152 km/h on a trial run with three coaches (according to some sources it may even have reached 156 km/h).

The Deutsche Reichsbahn took over 77 locomotives as Class 17.11-12 with the numbers 17 1124–1144 and 1154–1209.

In the DR in the GDR two 1914 variant locomotives were given Wendler coal-dust firing. The last engine was retired in 1964. Unlike the 1911 variant, no 1914 variant of this locomotive class remains preserved.