Helix options
This support shows the stair-step effect produced as each subsequent loop rises a little farther out than the previous (lower) loop. In this way,...
Here's a good view of the 1/4" bolts and how they're used to support the structure.
There's sufficient latitude in the N-scale Unitrack rail joiners (19" and 28"R only) to achieve graceful, flex-track-like curves,...
For radii over 15", you'll need an additional series of bolts. Position them on the inside of each helix section, midway between the ends (so...
Determine the grade as you position the lowest level. For a grade of approximately 2.5% and a radius of 15 inches, I elevated each level 0.5"...
The various levels of the Gleiswendel are elevated by means of five 36"-long 1/4th inch bolts. I had intended originally to supplement these...
My approach is a simplified version of Rainer's. Instead of a two-ply system, I rely on Unitrack to even out small disparities in elevation, etc....
These photographs recount the construction of a helix for my Utah Division layout (N scale). Using a simplified version of a plan developed by a...
The helix in its raw state. A train enters the helix on top and will leave it below the WP cars. The lower part of the helix leads to a future...
shows tortoise for one of the 2 switches; split support, cardboard protection, clearance by adjusting height (2nd loop is level, others go up to right
1st official Kellar Branch Traffic, June, 2006. The two tracks at the lower left corner of the pic are from the BN Alley tracks in Peoria.
Front track is CNW at 48" high. Buildings and SF tracks represent Libby's and Caterpillar's Morton facilities. The IC line from Pekin Helix...
Picture was taken to provide an example of how visible staging at the front of a layout might look.
Picture was taken to provide an example of how tracks would look if they were positioned as open/visible staging at the front of a layout, just a...
Typical viewing height. Haggerty Steel is served by the RI Beltline, visible in the middle of the picture in front of the trees. The P&PU and...
Peoria Helix behind Haggerty Steel. Rock Island tracks curve to the left behind Haggerty Steel and eventually go to Iowa Jct. P&PU, BN, and...
Aerial of Peoria Helix from above CNW's Adams Street Yard. BN and CNW tracks exit to helix at the right. P&PU tracks curve to the left and...
Looking into the bowl of the Peoria Helix. Tracks leave the helix on Loop 2, Loop 4 (just barely visible at right), and Loop 5 (not visible).4...
