DRG Class 99.32

The Class 99.32 engines were standard steam locomotives (Einheitsdampflokomotiven) in service with the Deutsche Reichsbahn in Germany. The three examples built are still working today on the Bäderbahn Molli (Molli Spa Railway) between Bad Doberan and Kühlungsborn-West. A feature of the engines is the tapered driver's cab due to the restricted loading gauge of the upper section of the line. With a top speed of 50 km/h it is one of the fastest narrow gauge locomotive classes in the whole of Germany, however it cannot run at that speed on this particular route.

Class 99.32
Number(s)
  • DRG: 99 321 – 99 323
  • DR: 99 2321 – 99 2323
  • DBAG: 099 231 – 099 233
  • MBB: 99 2321 – 99 2324
Quantity4
Manufacturer
Year(s) of manufacture1932 (3), 2008 (1)
Wheel arrangement2-8-2T
Axle arrangement1′D1′ h2t
TypeK 46.9
Track gauge900 mm (2 ft 11 716 in)
Length over buffers10,595 mm (34 ft 9 14 in)
Height3,400 mm (11 ft 1 78 in)
Overall wheelbase8,075 mm (26 ft 6 in)
Empty weight35.15 tonnes (34.59 long tons; 38.75 short tons)
Service weight43.68 tonnes (42.99 long tons; 48.15 short tons)
Adhesive weight31.80 tonnes (31.30 long tons; 35.05 short tons)
Axle load7.95 tonnes (7.82 long tons; 8.76 short tons)
Top speed50 km/h (31 mph)
Indicated Power338 kW (460 PS; 453 hp)
Starting tractive effort59.33 kN (13,340 lbf)
Driving wheel diameter1,100 mm (3 ft 7 14 in)
Leading wheel diameter550 mm (1 ft 9 58 in)
Trailing wheel diameter550 mm (1 ft 9 58 in)
Valve gearoutside Walschaerts (Heusinger)
No. of cylindersTwo, outside
Cylinder bore380 mm (14 1516 in)
Piston stroke550 mm (21 58 in)
Boiler Overpressure14 bar (1.40 MPa; 203 psi)
No. of heating tubes4
No. of smoke tubes69
Heating tube length3,500 mm (11 ft 5 34 in)
Grate area1.62 m2 (17.4 sq ft)
Radiative heating area5.80 m2 (62.4 sq ft)
Tube heating area54.74 m2 (589.2 sq ft)
Superheater area30.60 m2 (329.4 sq ft)
Evaporative heating area60.54 m2 (651.6 sq ft)
Water capacity4.25 m3 (150 cu ft) or 4,250 litres (930 imp gal; 1,120 US gal)
FuelCoal: 1.7 tonnes (1.7 long tons; 1.9 short tons)

Together with the DRG Class 99.33s, they are the only steam locomotives on the Bäderbahn Molli. Because the small Wismut engines have a low tractive effort and top speed, the search for alternatives started. As a result, in 2009 a fourth Einheitslok was built in Dampflokwerk Meiningen.[1]

  • 99 321 in service at Kühlungsborn West
  • 99 322 in service at Kühlungsborn West
  • 99 323 in service at Kühlungsborn West
  • 99 324 in service at Kühlungsborn West

Literature

  • Kieper, Klaus; Preuß, Reiner (1980). Schmalspurbahnarchiv. Berlin: transpress VEB Verlag für Verkehrswesen.
  • Kieper, Klaus; Preuß, Reiner (1980). Schmalspur zwischen Ostsee und Erzgebirge. Düsseldorf: Alba Buchverlag. ISBN 3-87094-069-7.
  • Obermayer, Horst J. (1971). Taschenbuch Deutsche Schmalspur-Dampflokomotiven. Stuttgart: Franckh. ISBN 3-440-03818-1.

See also

References

  1. "Molli-Dampflok 99 2324-4: So dampft die Neugebaute" (in German). Bahndampf.de. 27 May 2020.
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