Subject:
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Re: high speed railways and strange flat bed cars
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Newsgroups:
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lugnet.trains
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Date:
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Mon, 22 Mar 1999 16:48:46 GMT
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Viewed:
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1435 times
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Christopher Masi wrote in message
<36F65C5C.414FB274@cmasi.chem.tulane.edu>...
> Eric,
>
> If the pivot point on you model was moved to the top then you train would • act
> like a Talgo train. Instead of the top moving inward, the bottom would • swing
> out. The swing of the cars has to be translated to a bending of the joint
> between the cars. But what I am thinking about will not allow the trains to • go
> through an "S" because the cars would not be able to pivot in different
> directions....ah never mind I have no idea what I am talking about.
The main difference: with leaning inward, the lean angle has to be
mechanically induced by turning the bogies, while in the pendulum structure,
the car simply sways outwards by the speed in corners.
I would build it like this:
- connect the one-axle 'bogies' by a long beam
- make one bogie being fixed to the beam, make the other pivot horizontally
by a small turntable
(This means with tight LEGO curves, the cars can't be too long)
- chain multiple beams & bogies like this into a train
- build a standing fixture on each bogie
- hang a cab down between each two fixtures, so it can sway aside
- the bottom of each cab hangs over the center beam, thus restricting the
maximum sway.
Eric
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Message has 1 Reply:
 | | Re: high speed railways and strange flat bed cars
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| (...) How about: on each bogie but the first/last, have 2 vertical axles, one for each car; each with a 24t gear (the 2 of which are meshing). Mount the 2 cars using that bogie (or their pendulum bases, rather) on these 2 axles, and the bogie will (...) (26 years ago, 22-Mar-99, to lugnet.trains)
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Message is in Reply To:
| | Re: high speed railways and strange flat bed cars
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| Eric, If the pivot point on you model was moved to the top then you train would act like a Talgo train. Instead of the top moving inward, the bottom would swing out. The swing of the cars has to be translated to a bending of the joint between the (...) (26 years ago, 22-Mar-99, to lugnet.trains)
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