Grand Crossing Interlocking Train Crew Manual edition of 10-21-2017, added to web site.
Fundamentals of Railway Curve Superelevation edition of 4-8-2017, added to web site.
Principles of Injector Operation edition of 5-29-2016, added to web site.
Steam Locomotive Valve Gear Animations via youtube, added to web site.
Fundamentals of Steam Locomotive Boiler Water Level Management edition of 3-7-2016, added to web site.
Robinson Normally Closed Track Circuit Electrical Properties Calculator. Example of Excel spread sheet results for track circuit designed for use with 1:8 model scale practice aluminum rail track and Union Switch and Signal model DN-11 direct current neutral track relay drop-away produced by car wheel set shunt resistance of 10 ohms or less, added to web site.
Fundamentals of Steam Locomotive Tractive Force edition of 1-4-2016 added to web site.