The simulator is available here: http://jf2.com/bcwrr/Dockstader-Valve-Gear.html
Download the ZIP file(s), unpack them all in the same directory, then run vgstart.
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Compiled and © copyright 1998-2011 by: Vance R. Bass. Please use any and all information contained herein for your hobby enjoyment. If you're going to make money from it, talk to me first.
Valve gear software © copyright 1998-2005 by Charles Dockstader, and placed in the public domain by him. It may be freely shared and distributed, but not sold.
Last updated: 8 December 2010