| Baden IX b DRG Class 97.2 |
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|---|---|
| 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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