Are narrow gauge locomotives and cars narrower?

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Robert_Gift
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Are narrow gauge locomotives and cars narrower?

Post by Robert_Gift »

Somewhere I saw photos of a 3' 6" gauge train which appeared to have standard gauge-sized locomotives and railcars.
On a meter gauge train, the passenger cars seemed as though they could be tipped over if everyone moved to one side of the cars.

Is there a ratio of gauge to allowable car width?

My great uncle, a steam locomotivengineer, wished that standard gauge was 5 or 6 feet because his 4-8-4 steam locomotives were as big as they could get, restricted by 4' 8-1/2" gauge.

When I was in Panama, the track gauge seemed larger - like 5 feet. (I did not have a way to measure it.)
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gedunk
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Re: Are narrow gauge locomotives and cars narrower?

Post by gedunk »

Generally yes, they are smaller. The whole idea of narrow gauge is to lower expenses of construction and operation into areas where the full size is not feasable. Building a narrow gauge and then having to build clearances for full sized equipment would largely defeat this purpose. The drawback is that people and cargo can only get so "narrow gauged" - seats can only get so small, freight tonnage is much lower, etc.

It's a trade off. A lot of the surviving narrow gauge railroads are operating bigger equipment than originally intended because they cannot afford to re-gauge their entire physical plant, but have to haul higher quantities to make it pay.

That would be an interesting purchase request: "I want an SD70MAC with dynamic brakes, 30 degree curvature ability, and gauged at 36 inches". The sales rep would likely faint.
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