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
Number(s)DR 83 1001 – 82 1027
Quantity27
ManufacturerLokomotivbau Karl Marx Babelsberg
Year(s) of manufacture1955–1956
Retired1972
Wheel arrangement2-8-4T
Axle arrangement1′D2′ h2t
TypeGt 55.18
Track gauge1,435 mm (4 ft 8 1⁄2 in)
Length over buffers15,000 mm (49 ft 2 1⁄2 in)
Height4,250 mm (13 ft 11 5⁄16 in)
Wheelbase4,500 mm (14 ft 9 1⁄4 in)
Overall wheelbase11,000 mm (36 ft 1 in)
Empty weight70.9 tonnes (69.8 long tons; 78.2 short tons)
Service weight99.75 tonnes (98.17 long tons; 109.96 short tons)
Adhesive weight59.5 tonnes (58.6 long tons; 65.6 short tons)
Axle load15.0 tonnes (14.8 long tons; 16.5 short tons)
Top speed60 km/h (37 mph) both directions
Indicated Power794 kW (1,080 PS; 1,065 hp)
Driving wheel diameter1,250 mm (4 ft 1 1⁄4 in)
Leading wheel diameter850 mm (2 ft 9 1⁄2 in)
Trailing wheel diameter850 mm (2 ft 9 1⁄2 in)
No. of cylindersTwo
Cylinder bore500 mm (19 11⁄16 in)
Piston stroke660 mm (26 in)
Boiler Overpressure14 bar (1.4 MPa; 200 psi)
No. of heating tubes124
No. of smoke tubes24
Heating tube length3,800 mm (12 ft 5 1⁄2 in)
Grate area2.50 m2 (26.9 sq ft)
Radiative heating area12.16 m2 (130.9 sq ft)
Tube heating area94.02 m2 (1,012.0 sq ft)
Superheater area39.25 m2 (422.5 sq ft)
Evaporative heating area106.16 m2 (1,142.7 sq ft)
Water capacity14 m3 (490 cu ft) or 14,000 litres (3,100 imp gal; 3,700 US gal)
FuelCoal: 8 tonnes (7.9 long tons; 8.8 short tons)

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
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.