This question pertains to HO scale model railroading. It is my intention to include 22″ radius curves on a new layout I’m building, but I need to know how much actual space is required for each complete curve.

**Best answer:**

*Answer by noctis52*

About 4 feet for a half circle.

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**Best answer:**

*Answer by someguy*

ok well work is force x distance. and work is just difference in energy so if you take initial energy to be 0, energy is equal to force x distance.

now 170 pounds is about 77.27kg and the force is 757.27N. the distance is 16 miles = 25.75km so the energy is 19499.397 J. now a Watt is 1J/s. so 1W * 1s = 1J. so 19499.397J = 19499.397W-s. = ~19.5kW-s. multiply this by 1h/3600s (which is 1 cuz theyre equivalent) and you get 0.005416666 kw-h.

hope you understand that. let me know if you need more help

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