DRG Class 99.32

DRG Class 99.32
99 2323-6 in August 2006
Type and origin Power type Steam Builder Orenstein & Koppel (3) DLW Meiningen (1) Serial number O&K: 12400–12402 Build date 1932 (3), 2009 (1) Total produced 4
Specifications Configuration: ​  • Whyte 2-8-2T  • UIC 1′D1′ h2t  • German K 46.8 Gauge 900 mm (2 ft 11+7⁄16 in) Leading dia. 0,550 mm (1 ft 9+5⁄8 in) Driver dia. 1,100 mm (3 ft 7+1⁄4 in) Trailing dia. 0,550 mm (1 ft 9+5⁄8 in) Wheelbase: ​  • Axle spacing (Asymmetrical) 2,050 mm (6 ft 8+3⁄4 in) + 1,325 mm (4 ft 4+1⁄8 in) + 1,325 mm (4 ft 4+1⁄8 in) + 1,325 mm (4 ft 4+1⁄8 in) + 2,050 mm (6 ft 8+3⁄4 in) =  • Engine 8,075 mm (26 ft 5+7⁄8 in) Length: ​  • Over headstocks 9,795 mm (32 ft 1+5⁄8 in)  • Over buffers 10,595 mm (34 ft 9+1⁄8 in) Height 3,400 mm (11 ft 1+7⁄8 in) Axle load 7.95 t (7.82 long tons; 8.76 short tons) Adhesive weight 31.80 t (31.30 long tons; 35.05 short tons) Empty weight 35.15 t (34.59 long tons; 38.75 short tons) Service weight 43.68 t (42.99 long tons; 48.15 short tons) Fuel type Coal Fuel capacity 1.7 t (1.7 long tons; 1.9 short tons) Water cap. 4.25 m3 (935 imp gal; 1,120 US gal) Firebox: ​  • Grate area 1.62 m2 (17.4 sq ft) Boiler: ​  • Pitch 2,250 mm (7 ft 4+5⁄8 in)  • Tube plates 3,500 mm (11 ft 5+3⁄4 in)  • Small tubes 44 mm (1+3⁄4 in), 4 off  • Large tubes 76 mm (3 in), 69 off Boiler pressure 14 bar (14.3 kgf/cm2; 203 psi) Heating surface: ​  • Firebox 5.80 m2 (62.4 sq ft)  • Tubes 1.74 m2 (18.7 sq ft)  • Flues 53.00 m2 (570.5 sq ft)  • Total surface 60.54 m2 (651.6 sq ft) Superheater: ​  • Heating area 30.60 m2 (329.4 sq ft) Cylinders Two, outside Cylinder size 380 mm × 550 mm (14+15⁄16 in × 21+5⁄8 in) Valve gear Heusinger (Walschaerts)
Performance figures Maximum speed 50 km/h (31 mph) Indicated power 460 PS (338 kW; 454 hp) Tractive effort 59.33 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 Disposition All 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. All four are in service at Kühlungsborn West.

See also

• List of DRG locomotives and railbuses

References

• 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.