Basic Piston Rig from Tracy Blankenship on Vimeo.
About a year ago I built a steam train piston system in Maya that accelerates and decelerates based on the user-input train speed. Now it's in Houdini! And!! It's a much cleaner rig! Video breakdown:
Part 1) Illustrating the basic connections of the rig
Part 2) Illustrating the default acceleration/deceleration of the user-input train speed
Part 3) Illustrating how the optional train engine weight affects the rate of acceleration
