Baden IX b

Baden IX b
DRG Class 97.2
Baden 371 (Maschinenfabrik Esslingen 3546 of 1910)
Number(s) DRG 97 201–204, 251–253
Quantity 7
Manufacturer Maschinenfabrik Esslingen
Year(s) of manufacture 1910 (4), 1921 (3)
Retired mid-1930s
Wheel arrangement 0-6-2T
Axle arrangement C1′ n2(4v)zt
Track gauge 1,435 mm (4 ft 8 1⁄2 in)
Length over buffers 10.900 m (35 ft 9 1⁄4 in)
Height 4,248 mm (13 ft 11 1⁄4 in)
Overall wheelbase 5,050 mm (16 ft 6 3⁄4 in)
Empty weight 45.3–45.6 tonnes (44.6–44.9 long tons; 49.9–50.3 short tons)
Service weight 56.7–57.0 tonnes (55.8–56.1 long tons; 62.5–62.8 short tons)
Adhesive weight 42.8 tonnes (42.1 long tons; 47.2 short tons)
Axle load 14.3 tonnes (14.1 long tons; 15.8 short tons)
Top speed
  • Adhesion: 45 km/h (28 mph)
  • Rack: 18 km/h (11 mph)
Driving wheel diameter 1,080 mm (3 ft 6 1⁄2 in)
Trailing wheel diameter 850 mm (2 ft 9 1⁄2 in)
Rack system Riggenbach rack system
Valve gear Heusinger (Walschaerts)
No. of cylinders 4
Cylinder bore 450 mm (17 11⁄16 in)
Piston stroke 550 mm (21 5⁄8 in)
Cogwheel drive cylinder bore 450 mm (17 11⁄16 in)
Cogwheel drive piston stroke 550 mm (21 5⁄8 in)
Boiler Overpressure 14 bar (1.40 MPa; 203 psi)
No. of heating tubes 178
Heating tube length 3,200 or 3,850 mm (10 ft 6 in or 12 ft 7 1⁄2 in)
Grate area 1.8 m2 (19 sq ft)
Radiative heating area 8.2 m2 (88 sq ft)
Tube heating area 89.43 or 107.5 m2 (962.6 or 1,157.1 sq ft)
Superheater area 25.15 m2 (270.7 sq ft)
Evaporative heating area 97.59–115.7 m2 (1,050.5–1,245.4 sq ft)
Water capacity 5,000 litres (1,100 imp gal; 1,300 US gal)
Fuel Coal: 1.5 tonnes (1.5 long tons; 1.7 short tons)

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.

See also

References

    • Lohr, Hermann; Thielmann, Georg (1988). Lokomotiv-Archiv Baden. transpress Berlin. ISBN 3-344-00210-4.
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