Railroad Tracks

nivrip

Yorkshire Cruncher
Joined
Mar 21, 2007
Messages
10,892
Reaction score
2,138
Railroad Tracks.

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? Because that's the way they built them in England, and English expatriates designed the US railroads. Why did the English build them like that? Because the first rail lines were built by the same people who built the pre-railroad tramways, and that's the gauge they used. 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 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 on some of the old, long distance roads in England, because 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 and those roads have been used ever since.

And the ruts in the roads? Roman war chariots formed the initial ruts, which everyone else had to match for fear 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. In other words, 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, you will notice that 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 larger, 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 horses' ass wasn't important?

So, Horse's Asses control almost everything... ...Explains a whole lot of things, doesn't it? :D
 
Joined
Apr 11, 2007
Messages
956
Reaction score
59
I don`t know a lot about railways or their gauges,but does not the continental railway system have a wider gauge than ours? It was one of the reasons that the boat train to Dover had to stop at Dover so that travellers, to the continent, could board continental trains,with their wider tracks. I think it was Isambard Kingdom Brunel who wanted to use a much wider track for his railways,than we have now, but had to change plans for some reason. So does that mean that the Roman chariots were smaller in Britain after all,if the continental ruts were wider?
historian
 

Urmas

Subarctic Penguin
Joined
Mar 11, 2008
Messages
2,412
Reaction score
895
... but does not the continental railway system have a wider gauge than ours?
Short answer: no, it does not (if "ours" = the UK and "continental" = most of the Western Europe, that is.)

Long answer: Track gauge (Wikipedia)


More stuff:
http://mikes.railhistory.railfan.net/r071.html
http://www.dover-kent.co.uk/transport/train_ferry_dock.htm
http://www.dover-kent.co.uk/transport/night_ferry.htm
http://www.archive.org/stream/railroadfieldge00raymgoog#page/n8/mode/2up
 

floppybootstomp

sugar 'n spikes
Moderator
Joined
Mar 5, 2002
Messages
20,281
Reaction score
1,794
My Tri-ang train set had a gauge of about 1"

When I saw the thread title I dug out my vinyl copy of Leon Redbone's 'On The Track' which contains the track 'Polly Wolly Doodle'.

"There's a grasshopper sitting on a railroad track....."

Carry on :D
 

Urmas

Subarctic Penguin
Joined
Mar 11, 2008
Messages
2,412
Reaction score
895

@Engineer Flops: the last link in my above post might give you some fancy ideas Tri-ang wise... Railroad Field Geometry (Without Tables) – published in 1910.

pin27689.jpg
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads


Top