Good Afternoon Group. I know I have seen this somewhere so I do apologize in advance. In the case of two parallel tracks in superelevated curves are both tracks on the same plane in the superelevated section or are they on separate planes? Thank you.
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Separate.
Ed
Tigermoth,
I'm not sure what real railroads did. However, I am planning, 4 parallel mainline tracks in a wide sweeping curve with flex-track. They will be starting the curve from a straight tangent, that is flat and level. That is all four tracks will be in the same plane with the outer rails elevated slightly above the inner rails but all 4 outer rails at the same elevation (level). To do anything else would be an issue for me were the 4 tracks return to the flat and straight. I would have an ever-increasing hump from inner to outer, curved tracks
kevin
Mine are separately superelevated. Planar could be done but would be more complicated.
I have a 4 track main with super elevated and eased curves. I recommend closer track centers on straights than curves - saves space and helps add to the illusion of distance . Following PRR standards I use 3.5” (13’) on straights , and 4” on curves. See John Armstrong’s Track Planning for Realistic Operation for good layout design guidance and tips.
What you’d see the prototype do is elevate each track separately. So four tracks would resemble a sawtooth pattern in section.
Ive lived alongside the ex- PRR mainline most of my life. That’s how they did it.
Some great prototype info here: https://www.unlv.edu/sites/def...or-Higher-Speeds.pdf
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