Here's a way to maximize your small space

http://www.thisiscolossal.com/2015/08/a-hypnotic-infinite-model-train-loop-that-travels-rapidly-in-either-direction/

I notice he used distributed power.

Coming next, a DNA spiral with trains pretending to be chromosomes (for those with railroading in their bones…)

Chuck (modeling Central Japan in September, 1964 - with helices, not spirals)

By my estimate that inner loop looks like it’s about a 14" radius. Once again the laws of helix have been broken.

Looks like a roundy-round on steroids.

Switching might prove to be difficult.

Except that he has motive power distributed throughout the train. If he had all the locos at the front, I doubt it would work.

Steve S

Comments:

  1. I am impressed that he was able to accomplish this using sectional track.
  2. I am doubly impressed that he was able to get the trains to exactly fit.
  3. I would not have the patience to correctly seat all of those cars on curved track.