DR Class 83.10

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.

DR Class 83.10
Type and origin
BuilderLokomotivbau Karl Marx Babelsberg
Build date1955–1956
Total produced27
Specifications
Configuration:
​
 • Whyte2-8-4T
 • GermanGt 55.18
Gauge1,435 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:
 • Overall		11,000 mm (36 ft 1 in)
Length:
​
 • Over beams15,000 mm (49 ft 2+1⁄2 in)
Height4,250 mm (13 ft 11+5⁄16 in)
Axle load15.0 tonnes (14.8 long tons; 16.5 short tons)
Adhesive weight59.5 tonnes (58.6 long tons; 65.6 short tons)
Empty weight70.9 tonnes (69.8 long tons; 78.2 short tons)
Service weight99.75 tonnes (98.17 long tons; 109.96 short tons)
Fuel capacityCoal: 8 tonnes (7.9 long tons; 8.8 short tons)
Water cap.14 m3 (490 cu ft) or 14,000 litres (3,100 imp gal; 3,700 US gal)
Boiler:
​
No. of heating tubes124
No. of smoke tubes24
Heating tube length3,800 mm (12 ft 5+1⁄2 in)
Boiler pressure14 bar (1.4 MPa; 200 psi)
Heating surface:
 • Tubes		94.02 m2 (1,012.0 sq ft)
 • Firebox2.50 m2 (26.9 sq ft)
 • Radiative12.16 m2 (130.9 sq ft)
 • Evaporative106.16 m2 (1,142.7 sq ft)
Superheater:
​
 • Heating area39.25 m2 (422.5 sq ft)
CylindersTwo
Cylinder size500 mm (19+11⁄16 in)
Piston stroke660 mm (26 in)
Performance figures
Maximum speed60 km/h (37 mph) both directions
Indicated power794 kW (1,080 PS; 1,065 hp)
Career
NumbersDR 83 1001 – 82 1027
Retired1972

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.

See also

References
    • 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. ISBN 3-87094-083-2.
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