Page 39 - 38. MRH13-04-Apr2013

The complete thread is at mrhma g.com/node/12284.
– MRH Forum
Q. I need to understand the math to install an Atlas #3.5 wye
(3) to connect two parallel tracks to converge via the wye into
one track. The center lines of the parallel tracks will be 3 to 4
inches apart, depending on what radius and length of track I
need to make this work. I will be running passenger cars, so it
is critical that I have good length and radii for this.
– Moose2013
A. Responders took a pragmatic view.
“Moose, you are over thinking the problem,” said Tom
VanWormer. “What railroad are you modeling? What era? In
the 1970s the double track center line was normally 16 to 20
feet apart. In the '20s to '50s the track center line was 13 feet.
For a high speed passenger line give yourself two passenger
lengths to transition from the wye to the mainline track so
you don't induce any S curves into your track and lay your
track by eye. That way your passenger trains will smoothly
transit the track.”
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