Soviet locomotive class OR23

OR23
Type and origin
Power typeSteam
DesignerM. N. Anikeev, Yu. G. Kirilov and N. A. Turik
BuilderVoroshilovgrad Locomotive Works
Build date1949
Total produced1
Specifications
Configuration:
​
 • Whyte2-10-4
Gauge1,524 mm (5 ft)
Leading dia.900 mm (2 ft 11 in)
Driver dia.1,500 mm (4 ft 11 in)
Trailing dia.1,050 mm (3 ft 5 in)
LengthWith tender: 29,540 mm (96 ft 11 in)
Engine only: 16,775 mm (55 ft 0.4 in)
Axle load:​
 • Coupled23.1 t (22.7 long tons; 25.5 short tons)
Adhesive weight115.4 t (113.6 long tons; 127.2 short tons)
Service weight168.1 t (165.4 long tons; 185.3 short tons)
Tender typeSix-axle 6P
Firebox:​
 • Grate area8.2 m2 (88 sq ft)
Boiler pressure17 kgf/cm2 (240 psi; 17 bar)
Heating surface324 m2 (3,490 sq ft)
Superheater:
​
 • TypeDouble-turn Schmidt
 • Heating area184 m2 (1,980 sq ft)
Cylinder size520 mm × 645 mm (20.5 in × 25.4 in)
Performance figures
Maximum speed90 km/h (56 mph)
Indicated power2,500 hp (1,900 kW)
Career
OperatorsSoviet Railways

The OR23 was a Soviet experimental locomotive built in 1949. Its cylinders were placed above the center driving axle, and had rods on both ends which transferred power to the wheels. The purpose was to balance the driving forces on the wheels, allowing the counterweights on the wheels to be smaller and reducing hammer blow on the track. The design was a failure and no further examples were built. The locomotive was never used beyond testing and was returned to its builder, the Voroshilovgrad Works, and scrapped sometime afterward.

See also

References

Bibliography

  • Rakov, V.A. (1995). Опытные грузовые паровозы со сцепной массой 112—117 т // Локомотивы отечественных железных дорог 1845-1955 [Experimental freight locomotives with a coupling weight of 112-117 tons // Locomotives of domestic railways 1845-1955] (in Russian) (2 ed.). Транспорт. ISBN 5-277-00821-7.
  • Sologubov, V.N. (1952). Технический справочник железнодорожника [Technical Handbook of a Railwayman] (in Russian). Vol. 6. State Transport Railway Publishing House.


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