Editing 2-10-4 (section)

===Soviet Union===
[[File:The Soviet-built opposed-piston 2-10-4 of 1949.jpg|thumb|[[Soviet locomotive class OR23|Soviet class OR23]], ''circa'' 1949]] 
Two Texas-type locomotives were built in the USSR. One, the [[Soviet locomotive class OR23|class OR23]], built in 1949 by the locomotive works in [[Ulan Ude]], had cylinders that 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 idea 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. Test runs showed, however, that the OR23 design was unsuitable as a practical locomotive. The locomotive was never used for more than testing and was returned to its builder and scrapped.<ref name=Russia/>