Soviet locomotive class OR23

Built in 1949, the opposed-piston 2-10-4 was one of a number of unsuccessful Soviet locomotive designs.[citation needed] The cylinders were placed above the center driving axle. Unlike nearly all steam locomotives, the pistons 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.

The Soviet-built opposed piston 2-10-4 locomotive

See also

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