DR Class 83.10

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DR Class 83.10
Type and origin Power type Steam Builder Lokomotivbau Karl Marx Babelsberg [de] Build date 1955–1956 Total produced 27
Specifications Configuration: ​  • Whyte 2-8-4T  • UIC 1′D2′ h2t  • German Gt 47.15 Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 850 mm (2 ft 9+1⁄2 in) Driver dia. 1,250 mm (4 ft 1+1⁄4 in) Trailing dia. 850 mm (2 ft 9+1⁄2 in) Wheelbase: ​  • Axle spacing (Asymmetrical) 2,600 mm (8 ft 6+3⁄8 in) + 1,500 mm (4 ft 11+1⁄16 in) + 1,500 mm (4 ft 11+1⁄16 in) + 1,500 mm (4 ft 11+1⁄16 in) + 2,200 mm (7 ft 2+5⁄8 in) + 1,800 mm (5 ft 10+7⁄8 in) =  • Engine 11,100 mm (36 ft 5 in) Length: ​  • Over headstocks 13,800 mm (45 ft 3+1⁄4 in)  • Over buffers 15,100 mm (49 ft 6+1⁄2 in) Height 4,250 mm (13 ft 11+5⁄16 in) Axle load 14.9 t (14.7 long tons; 16.4 short tons) Adhesive weight 59.5 t (58.6 long tons; 65.6 short tons) Empty weight 70.9 t (69.8 long tons; 78.2 short tons) Service weight 99.7 t (98.1 long tons; 109.9 short tons) Fuel type Coal Fuel capacity 8.0 t (7.9 long tons; 8.8 short tons) Water cap. 14 m3 (3,080 imp gal; 3,700 US gal) Firebox: ​  • Grate area 2.50 m2 (26.9 sq ft) Boiler: ​  • Pitch 2,900 mm (9 ft 6+1⁄8 in)  • Tube plates 3,800 mm (12 ft 5+5⁄8 in)  • Small tubes 44.5 mm (1+3⁄4 in), 124 off  • Large tubes 133 mm (5+1⁄4 in), 24 off Boiler pressure 14 bar (14.3 kgf/cm2; 203 psi) Heating surface: ​  • Firebox 12.16 m2 (130.9 sq ft)  • Tubes 58.35 m2 (628.1 sq ft)  • Flues 35.65 m2 (383.7 sq ft)  • Total surface 106.16 m2 (1,142.7 sq ft) Superheater: ​  • Heating area 39.25 m2 (422.5 sq ft) Cylinders Two, outside Cylinder size 500 mm × 660 mm (19+11⁄16 in × 26 in)
Performance figures Maximum speed 60 km/h (37 mph) both directions Indicated power 1,080 PS (794 kW; 1,070 hp)
Career Operators Deutsche Reichsbahn (GDR) Numbers 83 1001 – 82 1027 Retired 1972

The DR Class 83.10 was a newly designed (Neubaulok) steam locomotive built for the Deutsche Reichsbahn in East Germany after the Second World War and was introduced into service in 1955 and 1956.

The 83.10 was intended for duties on branch lines where a top speed of 60 km/h and a driving wheel diameter of 1,250 mm was sufficient. The carrying wheels and first coupled wheels worked together in a Krauss-Helmholtz bogie. The design of the Class 83.10 was based on the DR Class 65.10. The engines were fitted with superheated steam regulators, mixer-preheaters, distributed sandboxes and plate frames. They could haul a train load of up to 1,000 tonnes at 60 km/h on the level.

After the delivery of the first locomotive in 1955 the engine was fully tested at the VES-M Halle trials depot. The various tests showed numerous shortcomings, that could not all be resolved on the production models. Several problems were able to be rectified in the course of subsequent modifications. The locomotive was never really convincing and, in the light of the looming changeover to diesel operations, only 27 examples were eventually built. It remains therefore relatively unknown. One area of operations was the Arnstadt–Saalfeld line.

In 1972 the last two machines, numbers 83 1025 and 83 1027 were retired. No examples of this class have been preserved.

• List of East German Deutsche Reichsbahn locomotives and railbuses
• Neubaulok

• Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. pp. 259–261. ISBN 978-3-946594-21-5.
• Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1978). Dampflokomotiven deutscher Eisenbahnen, Baureihe 60–96 (EFA 1.3) (in German) (4th ed.). Düsseldorf: Alba. pp. 106–109, 241. ISBN 3-87094-083-2.

• Model of an 83.10 at the Dresden Transport Museum
• Book about the BR 83.10