Hi Jack --
No, it is not possible. 46” diameter works out to about 12 feet of run
per circle of track (presuming that you are also limiting the whole helix to
48” x 48”) whereas to gain the requisite 4” between levels will take 16 feet
at approximately 2%. Now if you stretch the helix into an oval, you can
see that you can do it in 48 x 72”. I used 4” between levels which gives
you approximately one inch for benchwork to support the track, but
practically no clearance for the trains.
I hope this helps!
Bill Winans
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Would anyone know if it is possible to design a working helix that has a
track diameter of 46 inches, would fit on 48 inch table, rise 15 inches at 2
percent grade?
Jack
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