Salt River Valley crew change point/yard - A hidden staging yard out in the open. 

The SRV Yard project.

With the expansion of the GS&M I was able to gain a lot of extra space.  The problem is the GS&M was built to fit into its 12'x 20' space. At this time what is the PHX end staging is now reached via a Huge Helix down to the bottom staging level for all the shared staging on the layout (PHX - North & TUC - South).

I am looking for suggestions on how to operate a three throw stub switch, either by ground throw or switch machine.

Looking for just the rail for a couple projects that I want to start.  The search on ebay has been fruitless and the search online has gone no where.  I had a place to go and get it but they retired a couple years ago.  Any help is much appreciated.

Thanks

Mike

I use 3dplanit and have a design I started to implement. It was based on 32" min radius for mainline. It is single track but has passing siding and other track in parallel around curves. I had settled in 2 1/8" center to center standard (from practical testing, John Armstrong's planning book, and car length to curve nX). Then I read the NMRA RP-7 and thought what if I need more spacing for future equipment.