Prussian T 9 - T 9.2

T 9.2

Prussian T 9.2
DRG Class 91.0–1
Number(s): DRG 91 001–121
DRG 91 131–149
Quantity: 235
Year(s) of manufacture: 1892–1900
Retired: 1966
Axle arrangement: 1'C
Gauge: 1.435 mm
Length over buffers: 10.650 mm
Service weight: 52,6 t
Adhesive weight: 41,0 t
Axle load: 14,7 t
Top speed: 60 km/h
Indicated Power: 338 kW
Driving wheel diameter: 1.350 mm
Leading wheel diameter: 1.000 mm
Cylinder bore: 430 mm
Piston stroke: 630 mm
Boiler Overpressure: 12 bar
Tube heating area: 1,75 m²
Evaporative heating area: 106,82 m²

Class T 9.2 of the Prussian state railways were goods train tank locomotives with a 2-6-0T wheel arrangement. They had the same range of tasks as the T 9.1. Even its main dimensions were largely the same. The reason for its design was a fear that the riding qualities of the T 9.1 were too poor. As a result it was given a leading axle instead of a trailing axle.

Of the 235 machines built, 154 units were incorporated by the Deutsche Reichsbahn in its 1923 renumbering plan and designated as DRG Class 91.0-1. According to the 1925 numbering plan, 111 locomotives were taken over as 91 001–087, 91 090–108, 91 115, as well as the wrongly classified 90 023, 90 024, 90 123 and 90 124.

The locos with running numbers 91 116–121 came from the Bremen harbour railway (91 116) and the Saar Railway. They were joined in 1938 by numbers 91 131–136 from the Brunswick State Railway. In the Second World War locomotives 91 137–149 came from Poland. After the war there were only a few left in service. The Deutsche Bundesbahn retired its last machine in 1953 and the Deutsche Reichsbahn (GDR) followed suite in 1966. The Reichsbahn engine, 91 134, has been preserved and since August 2006 has been owned by the Mecklenburg Railway Society (Mecklenburgische Eisenbahnfreunden) in Schwerin.

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