Subject:
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Re: Tilting trains (Used to be: how did James Mathis make his tilting trains?)
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Newsgroups:
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lugnet.trains
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Date:
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Sun, 10 Feb 2002 03:53:46 GMT
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Viewed:
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1043 times
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John: Thanks for quantifying that the "tilt allows speeds up to 30% higher
then normal". Sounds like a good couple of pages of reading in that
'Ultimate Visual Dictionary'.
later,
James Mathis
In lugnet.trains, John Henry Kruer writes:
>
> LECTURE LECTURE LECTURE LECTURE LECTURE LECTURE LECTURE LECTURE LECTURE
>
> I have a 'Ultimate Visual Dictionary' and it has a pair of pages about
> tilting trains, though it only mentions the Pendolino and a 'French tilting
> train' that it dosn't name. Anyway, it describes the mechanics of the
> tilting train.
>
> Whenever a train turns on a curve, a centrifugal force is created that
> pushes the interior of the car to the outside of the curve (the obtuse part
> of the curve)thus resuting in objects moving. You feel that same feeling as
> when a car turns. This results in some passenger discomfort.
>
> \ \
> \ \
> \ \
> / / __\
> / / /
> / / Centrifugal force
> / /
>
> Train tracks on curves are always banked to about 6 degrees. However,
> on tilting trains, a hydraulic system on the truck frame(it would be the
> bogie plate on Lego trains, I belive)pushes the car above it towards the
> acute angle of the curve(the opposite of the direction of the Centrifugal
> force)at angle of about 8 degrees, thus compensating for about 70% of the
> centrifugal force, increasing passengar comfort.
>
>
>
>
> \ \
> \ \
> \ \
> /_ / / __\
> \ / / /
> Sideways / / Centrifugal force
> force / /
> produced by
> tilting.
>
>
> The total tilt of 14 degrees results with greeater comfort and safety.
> ALSO the tilt allows speeds up to 30% higher then normal.
>
> The end.
>
> John Henry Kruer
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