tomikawaTTSo, why was that colliery using that gauge? GOOD question.
Yeah. Five even feet, with the flanges on the outside of the plateways.
When you shift the flanges to the inside of the wheels, with clearance, and measure over those to get gauge, it's not as surprising that you get an odd fraction.
The two-horse-chariot is a fun meme, but it shouldn't be thought of as actual industrial history.
Why are the rails 56 1/2 inches apart?
Probably because George Stephenson chose that gauge for the Stockton and Darlington back in 1830. Stephenson went on to manufacture locomotives to 'Standard' gauge for the British Isles, the Continent and 'The Colonies' (US and Canada.)
Why? Because Stephenson had worked at a colliery with tracks gauged 56 inches. He freed up the gauge by 1/2 inch since the Stockton and Darlington would be running longer wheelbase rolling stock. (Brunel derided Stephenson's 'Standard' gauge as, "Mine cart gauge," and built his own railroad to 7 foot 1/4 inch gauge.)
So, why was that colliery using that gauge? GOOD question.
Chuck
When I visited Rome in 1974, I was amused to note that the tramcars were lettered "SPQR".
However, the horse width story of gauge selection is generally regarded as an urban myth.
M636C
Don't take EVERYTHING I say here so seriously!
When I'm serious, believe me, you'll know it.
As far as the other horse's patootie, let me quote the fictional Pontius Pilate from "Ben Hur"...
"Where there is greatness, either great government or great feeling, error also is great."
Fiction, but it makes sense.
Firelock76And as long as I'm at it... Senatus Populus Que Romanus!
If you're going to be at it, do it as the Romans would. "Populusque" is one word: the additive suffix (technically it's an enclitic particle, but that sounds vaguely non-family-friendly) meaning 'and' in the sense of 'thoroughly together with'.
Why not try for INRI, a phrase from perhaps the greatest historical Roman supposed horse's ass of all? ...And it's even the right time of year!
Ave Caesar! Roma aeterna est!
And as long as I'm at it...
Senatus Populus Que Romanus!
And on another note: "...So, a major Space Shuttle design featureof what is arguably the world's most advanced transportation system was determined over two thousand years ago by the width of a horse's ass.
{and a tip of the hat to Steve, and his sister!}
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