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4ft 8.5 in
Discussion that doesnt fit other Topics
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Tremblay
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Joined: Oct 08, 2007
Posts: 2656
Location: Malta, Montana

PostPosted: Wed May 06, 2020 11:29 am    Post subject: 4ft 8.5 in Reply with quote

The US standard railroad gauge (distance between the rails) is 4 feet, 8.5 inches. That's an exceedingly odd number.

Why was that gauge used?
Well, because that's the way they built them in England, and English engineers designed the first US railroads.

Why did the English build them like that?
Because the first rail lines were built by the same people who built the wagon tramways, and that's the gauge they used.

So, why did 'they' use that gauge then?
Because the people who built the tramways used the same jigs and tools that they had used for building wagons, which used that same wheel spacing.

Why did the wagons have that particular odd wheel spacing?
Well, if they tried to use any other spacing, the wagon wheels would break more often on some of the old, long distance roads in England . You see, that's the spacing of the wheel ruts.

So who built those old rutted roads?
Imperial Rome built the first long distance roads in Europe (including England ) for their legions. Those roads have been used ever since.

And what about the ruts in the roads?
Roman war chariots formed the initial ruts, which everyone else had to match or run the risk of destroying their wagon wheels. Since the chariots were made for Imperial Rome , they were all alike in the matter of wheel spacing. Therefore the United States standard railroad gauge of 4 feet, 8.5 inches is derived from the original specifications for an Imperial Roman war chariot. Bureaucracies live forever.

So the next time you are handed a specification/procedure/process and wonder 'What horse's ass came up with this?', you may be exactly right. Imperial Roman army chariots were made just wide enough to accommodate the rear ends of two war horses. (Two horses' asses.)

Now, the twist to the story:

When you see a Space Shuttle sitting on its launch pad, there are two big booster rockets attached to the sides of the main fuel tank. These are solid rocket boosters, or SRBs. The SRBs are made by Thiokol at their factory in Utah . The engineers who designed the SRBs would have preferred to make them a bit fatter, but the SRBs had to be shipped by train from the factory to the launch site. The railroad line from the factory happens to run through a tunnel in the mountains, and the SRBs had to fit through that tunnel. The tunnel is slightly wider than the railroad track, and the railroad track, as you now know, is about as wide as two horses' behinds.

So, a major Space Shuttle design feature, of 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 you thought being a horse's ass wasn't important? Ancient horse's asses control almost everything and....

CURRENT Horses Asses are controlling everything else

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English Mike
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Joined: Jan 08, 2007
Posts: 1709
Location: Whitehaven, Cumbria, UK

PostPosted: Wed May 06, 2020 2:51 pm    Post subject: Re: 4ft 8.5 in Reply with quote

British tanks used in WW2 were narrower than German & French tanks due to a narrower loading gauge on UK railways.
The Great Western Railway, built by the engineering genius, Isambard Kingdom Brunel was initially built to a 7' gauge, far more stable & efficient than standard gauge but more expensive to construct - an example of short term profiteering triumphing over long term investment capitalism(the best kind).
7' gauge could carry three times more, at higher speeds & greater efficiency than standard gauge but sadly, the money men overruled the engineers & eventually (1892?) the GWR was converted to standard gauge.

Interestingly, India adopted the 5'6" gauge under British rule & uses it to this day - 30% greater carrying capacity for a <17% increase in gauge.


Last edited by English Mike on Wed May 06, 2020 2:57 pm; edited 1 time in total
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PaulS
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Joined: Feb 18, 2006
Posts: 4330
Location: South-Eastern Washington - the State

PostPosted: Wed May 06, 2020 2:55 pm    Post subject: Re: 4ft 8.5 in Reply with quote

I knew the story behind the railroad tracks but I didn't know how it affected the space shuttle. I love it!

Although I hat the last thought it is mostly true... dadgumit!

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Elvis
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Joined: Jul 27, 2008
Posts: 9276
Location: south island New Zealand

PostPosted: Wed May 06, 2020 7:11 pm    Post subject: Re: 4ft 8.5 in Reply with quote

that just about sums up life...

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