Concentric ovals

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I have a 22"radius ho track oval with three straight pieces and one 3" piece on each side. I want to connect them in a concentric oval using a single atlas manual switch and 18" radius track for the inner oval. How do I do this?

Is it possible to achieve a consistent distance between the outer and inner tracks without using flex track?

Thank you,

William

[Len]

If you are using all Atlas track you could do something like this:



It can be done with EZ-Track, but the fitter pieces will come out different because of slight differences in the geometry of the switches.

Len