Came across a couple of sites that might be of interest.
I'm still trying to figure out how this one works, much less how to model it.
http://www.catskillarchive.com/rrextra/tkmacph.Html
Or this one
http://www.du.edu/~jcalvert/railway/wharton.htm
Plus this site for signaling
http://www.du.edu/~jcalvert/railway/railhom.htm#civil
Dave
I'm still trying to figure out how this one works, much less how to model it.
http://www.catskillarchive.com/rrextra/tkmacph.Html
Or this one
http://www.du.edu/~jcalvert/railway/wharton.htm
Plus this site for signaling
http://www.du.edu/~jcalvert/railway/railhom.htm#civil
Dave