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DRG Class 99.32

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DRG Class 99.32
99 2323-6 in August 2006
Type and origin
Power typeSteam
Builder
Serial numberO&K: 12400–12402
Build date1932 (3), 2009 (1)
Total produced4
Specifications
Configuration:
 • Whyte2-8-2T
 • UIC1′D1′ h2t
 • GermanK 46.8
Gauge900 mm (2 ft 11+716 in)
Leading dia.0,550 mm (1 ft 9+58 in)
Driver dia.1,100 mm (3 ft 7+14 in)
Trailing dia.0,550 mm (1 ft 9+58 in)
Wheelbase:
 • Axle spacing
(Asymmetrical)
  • 2,050 mm (6 ft 8+34 in) +
  • 1,325 mm (4 ft 4+18 in) +
  • 1,325 mm (4 ft 4+18 in) +
  • 1,325 mm (4 ft 4+18 in) +
  • 2,050 mm (6 ft 8+34 in) =
 • Engine8,075 mm (26 ft 5+78 in)
Length:
 • Over headstocks9,795 mm (32 ft 1+58 in)
 • Over buffers10,595 mm (34 ft 9+18 in)
Height3,400 mm (11 ft 1+78 in)
Axle load7.95 t (7.82 long tons; 8.76 short tons)
Adhesive weight31.80 t (31.30 long tons; 35.05 short tons)
Empty weight35.15 t (34.59 long tons; 38.75 short tons)
Service weight43.68 t (42.99 long tons; 48.15 short tons)
Fuel typeCoal
Fuel capacity1.7 t (1.7 long tons; 1.9 short tons)
Water cap.4.25 m3 (935 imp gal; 1,120 US gal)
Firebox:
 • Grate area1.62 m2 (17.4 sq ft)
Boiler:
 • Pitch2,250 mm (7 ft 4+58 in)
 • Tube plates3,500 mm (11 ft 5+34 in)
 • Small tubes44 mm (1+34 in), 4 off
 • Large tubes76 mm (3 in), 69 off
Boiler pressure14 bar (14.3 kgf/cm2; 203 psi)
Heating surface:
 • Firebox5.80 m2 (62.4 sq ft)
 • Tubes1.74 m2 (18.7 sq ft)
 • Flues53.00 m2 (570.5 sq ft)
 • Total surface60.54 m2 (651.6 sq ft)
Superheater:
 • Heating area30.60 m2 (329.4 sq ft)
CylindersTwo, outside
Cylinder size380 mm × 550 mm (14+1516 in × 21+58 in)
Valve gearHeusinger (Walschaerts)
Performance figures
Maximum speed50 km/h (31 mph)
Indicated power460 PS (338 kW; 454 hp)
Tractive effort59.33 kN (13,340 lbf)
Career
Numbers
  • DRG: 99 321 – 99 323
  • DR: 99 2321 – 99 2323
  • DBAG: 099 231 – 099 233
  • MBB: 99 2321 – 99 2324
DispositionAll operational

The Class 99.32 engines are 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.

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] All four are in service at Kühlungsborn West.

See also

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References

[edit]
  1. ^ "Molli-Dampflok 99 2324-4: So dampft die Neugebaute" (in German). Bahndampf.de. 27 May 2020.
  • 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.
  • Weisbrod, Manfred; Petznik, Wolfgang (1981). Dampflokomotiven deutscher Eisenbahnen, Baureihe 97–99 (EFA 1.4) (in German) (2nd ed.). Düsseldorf: Alba. pp. 145–147, 208. ISBN 3-87094-087-5.