Helix Construction on the Lucaston & Southern - Model Railroading

Originally made as a presentation for the Trinity River Division for the NMRA, this video shows how I built my double helix for my N-scale layout.

Helix Specs:
1/2" cabinet grade plywood cut into 5-1/4" strips

Segments cut at 15-7/8" on long end

38" Total width of level

2.3% Grade

2.67" Total height between levels

2.2" 'Finger' clearance between levels

18.5" Elevation change

18-3/8" Radius outer loop, 17-5/8" Radius inner loop

Circle jig is calibrated for 1/2" bit so outer loop routed at 36" and inner loop routed at 33" with 3/4" bit to get the above radius.

Routing depth at 1/8"

51 pieces of Atlas Code 80 flex track mounted with ME medium rail spikes.

Music Credit: bensound.com