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[2railjon]

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[J. S. Bach]

So that is what happened to all of the center rail that you ripped out of your previous layout!! And wait a minute, is not this the TWO rail forum??

[De Bruin]

This is actually a prototype for that NEC upgrade ROW-Mode we were promised. I look forward to riding it once in service.

[E7]

Jon,

I am totally appalled! What next, "one rail scale"???

Rich

[R.K. Maroon]

That circle of single-rail reminded me of the origin of the term "train your guns", as in "the fort trained her guns on the approaching ship". Large cannons were often supported on wheels that road on a circle of single railroad rail. Other rail was often used but the similarity to the wheels and rail of a railroad train was still there. The guns were aimed (trained) by rolling the cannon on the rail around the circle. Here are some examples:

https://www.nps.gov/fowa/learn/historyculture/mammoth.htm

http://fairhaventours.com/24-pound-seacoast-cannons/

These and other examples can be seen by doing an internet image search for "large fort cannons" or similar.

In some defense and scientific circles, what is more commonly called the "azimuth" axis for a large pedestal is still sometimes called the train axis.

Jim

[John Webster]

One can only wonder about the ancillary equipment required to keep it upright when not in use and to power up the gyro.