Subject:
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Re: Brit-Rail APT (Advanced Passenger Train)
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 31 May 2001 14:58:51 GMT
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Viewed:
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754 times
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"James Mathis" <thakius@nmt.edu> wrote in message
news:GE5Mwy.49r@lugnet.com...
> I've been working on a pendular mechanism to tilt train cars through • curves.
> A fun project! :-)
>
> There are quite a few train sets now that employ some type of pendular • scheme,
> now; but, for me the Brit-Rail APT was my first introduction to a tilting
> train. (Was it the first to carry ticket-paying passengers?) So, it • seems
> appropriate to outfit an APT with my first pendular mechanism.
My physics might be completely wrong here, but the APT system was active
wasn't it, in that it forced the train to lean into the curve to counteract
centrifugal force.
Without an active mechanism, wouldn't a tilting Lego train have the opposite
effect? i.e. centrifugal force making the train lean out of the curve even
more and toppling over even quicker than a non-tilting one?
First prize to whomever manages to squeeze an RCX controlled pneumatic
active solution into a Lego train :-)
regards
lawrence
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Message has 1 Reply:
 | | Re: Brit-Rail APT (Advanced Passenger Train)
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| (...) For a passive tilt mechanism: It depends on where the pendular axis is located. If the axis of rotation is above the wagon's center of gravity, then the wagon would tilt such that the base of the wagon swing out in the curve- a "correct" tilt. (...) (24 years ago, 31-May-01, to lugnet.trains)
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Message is in Reply To:
| | Brit-Rail APT (Advanced Passenger Train)
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| I've been working on a pendular mechanism to tilt train cars through curves. A fun project! :-) There are quite a few train sets now that employ some type of pendular scheme, now; but, for me the Brit-Rail APT was my first introduction to a tilting (...) (24 years ago, 30-May-01, to lugnet.trains)
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