Subject:
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Re: Does your train layout move?
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Newsgroups:
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lugnet.trains
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Date:
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Sun, 6 Feb 2000 10:57:34 GMT
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Viewed:
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1740 times
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On Sun, 6 Feb 2000, Larry Pieniazek (<389D0754.5C6ED094@voyager.net>)
wrote at 05:32:04
>
> But I can see layouts move even on top of carpet. When a train is
> running, it tends to deform the track outwards when it goes around
> curves. For whatever reason it seems not to be a completely return to
> center motion. Depending on whim, or the shape of the layout, or slight
> slopes in the floor (I don't know which) the layout walks in one
> direction.
The weight of the train will deflect the carpet pile downwards, and the
fibres will tend to move in a circular motion vertically, like reeds in
the wind.
This will cause a slight translation in the track, which isn't fully
recovered when the train has passed.
If you run your hand over the rug, it will feel slightly rougher in one
direction than in the other direction. The track will move in the same
direction as when your hand is moving in the smooth direction. That's
because the fibres are already lying in that direction, and will deflect
further in the same direction.
Does this make sense?
--
Tony Priestman
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Message has 2 Replies:
 | | Re: Does your train layout move?
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| Tony Priestman wrote: <direction of pile determines the direction of motion...> Makes a great deal of sense to me. How, how about Berber, which doesn't really have a defined direction.... here I think that it has to do with floor slope. (25 years ago, 6-Feb-00, to lugnet.trains)
| | | Re: Does your train layout move?
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| Tony Priestman wrote in message ... [ ... snipped ... ] (...) Sure does, in fact, the track is indeed sliding in the direction of least resistance of the rug which makes perfect sense from a physics perspective. I am surprised that the train (...) (25 years ago, 6-Feb-00, to lugnet.trains)
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Message is in Reply To:
| | Re: Does your train layout move?
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| (...) Yes. I assume you: have no cats that might be doing it, evilcreatures... and that you are running trains. If you're cat free and not running trains I dunno. But I can see layouts move even on top of carpet. When a train is running, it tends to (...) (25 years ago, 6-Feb-00, to lugnet.trains)
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