Algodoo

On July 3, 1938, the world speed record for steam
locomotives was set at 203 km / h. The model presented in
this scene develops a speed of 30 meters per second, which
rushes at 108 kilometers per hour.

Procedure for overclocking
Press the button U.
After starting the movement, press button A.
Button A is responsible for the yellow lever that controls the
valve phase.
A speed of 30 meters per second is reached when the yellow
lever reaches the green zone.

If the description is not clear google translator is guilty.)))

P.S. This is the last scene with steam locomotives.