Baden IX b

Baden IX b
DRG Class 97.2
Number(s) DRG 97 201–204, 251–253
Quantity 7
Manufacturer Maschinenfabrik Esslingen
Year(s) of manufacture 1910–1921
Retired mid-1930s
Wheel arrangement 0-6-2
Axle arrangement C1'
Length over buffers 10,900 mm
Service weight 56.7 t
Adhesive weight 42.8 t
Axle load 14.3 t
Top speed Adhesion: 45 km/h
Rack: 18 km/h
Driving wheel diameter 1,080 mm
Trailing wheel diameter 850 mm
Rack system Riggenbach rack system
Cylinder bore 450 mm
Piston stroke 550 mm
Boiler Overpressure 14 bar
Grate area 1.83 m²
Superheater area 25.15 m²
Evaporative heating area 97.59 m²

The Baden Class IX b were German rack railway steam locomotives with the Grand Duchy of Baden State Railways, whose cogwheel drive was designed for running on track with a Riggenbach rack system.

The locomotive was produced in two sub-classes, which were designated as IX b1 and IX b2. In 1925 they were grouped by the Deutsche Reichsbahn as DRG Class 97.2 within their renumbering plan. The engines were employed on the Höllentalbahn in the Black Forest until they were eventually and later replaced by DRG Class 85 locomotives.

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