Atmospheric Railway

A place for discussing diverse methods of powering locomotives, such as Internal Combustion, Wind, etc...
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SimonWood
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Atmospheric Railway

Post by SimonWood » Fri Jul 27, 2018 1:50 pm

Now I'm not planning to do this myself, but interested to read about this 1:6 scale atmospheric garden railway, in the sense of atmospheric pressure not railway with a nice atmosphere.

I wouldn't mind having a vineyard to build a railway in, though...

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Re: Atmospheric Railway

Post by Big Jim » Sun Jul 29, 2018 10:03 pm

That is an interesting project and a method of propulsion that harks back to the very early days of railways. Brunel didn't have much luck with it.......
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Re: Atmospheric Railway

Post by big-ted » Fri Aug 03, 2018 4:20 pm

So? Who's going to be the first to build one in 16mm? "Honey, I'm borrowing the vacuum cleaner...!"

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Re: Atmospheric Railway

Post by tom_tom_go » Fri Aug 03, 2018 6:44 pm



Contains many incorrectly pronounced words, God bless America!

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IrishPeter
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Re: Atmospheric Railway

Post by IrishPeter » Tue Aug 07, 2018 1:59 am

Interesting enough, though, he has solved the problem that IKB could not sort out, and that was maintaining a seal.

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Traffic Pattern? What pattern? Spuds out; grain in, but cattle, sheep and passengers are a lot less predictable.

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Re: Atmospheric Railway

Post by daan » Wed Aug 15, 2018 10:42 pm

In Brunels system they didn't have neodyum magnets. The system of the 89 year old man is just a tube with a magnet travelling inside, the train as another magnet. So there is no seal and much easier to keep a vacuüm..

But in 2018 even his system is very slow and old. Lineair electromagnetic motors have the same sort of propulsion (the propulsion is in the track. the vehicle follows by magnetic attraction) and can shoot a train straight up if needed.

The biggest problem of the vacuüm part in the pipe is that the piston also gets attracted by the train, so making a lot of friction inside the tube, which you don't have with lineair motors..

Nevertheless an interesting way of looking at things.. :thumbleft:
"En schöne Gruess" from an Alpine railway in Holland.

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Boustrophedon
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Re: Atmospheric Railway

Post by Boustrophedon » Sat Apr 20, 2019 7:58 pm

daan wrote: Wed Aug 15, 2018 10:42 pm

The biggest problem of the vacuüm part in the pipe is that the piston also gets attracted by the train, so making a lot of friction inside the tube, which you don't have with linear motors..

Nevertheless an interesting way of looking at things.. :thumbleft:
There need not be any net magnetic force on the magnetic piston causing it to rub on the tube, if it is arranged to attract magnets mounted on either side of the tube, rather than just on the top. Besides you know, bearings and rollers and stuff.

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Re: Atmospheric Railway

Post by Paulus » Sun Apr 21, 2019 6:23 pm

Very interesting indeed! Never heard of it before so I googled some more on this. It is fascinating that the first of those ideas are almost 200 years old, like the Saint-Germain atmospheric railway in France that was published about in 1847 (L'Illustration, Journal Universel, No 216, April 17, 1847).
Thanks for sharing this!

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