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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Tue, 16 Nov 1999 23:17:48 GMT
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Viewed:
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1492 times
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In lugnet.trains, Christopher Masi writes:
> Steve Barile wrote:
>
> > Just a copuple weeks ago I took the train from Portland to Seattle. It s was
> > the Amtrak (Talgo) passenger train. It has only one axle between cars. I • tried
> > to find some pics but ran out of time here is a URL
> > http://www.talgo.com/prini.htm.
> > I plan to make one, I think this one calls for some fancy engineering and • some
> > rubber bands (of course LEGO brand).
> > SteveB
>
> Some very fancy engineering...you are not kidding. The car has to swing like a
> pendulum (or would LEGO shock absorbers have enough give to allow the the • bottom
> of the car to swing out--maybe weights would help by adding a bit more inertia
> for the bottom of the pendulum) hold the wheelset perpendicular to the track, • all
> while allowing the cars to pivot about the wheelset.
Found this web page that looks promising for some "engineering-ish" drawings
and explanation of the Talgo car coupling and pendulum swaying.
http://www.trainweb.com/urpa/talgo/index.html
later,
James Mathis
> >
> > In lugnet.trains, Christopher Masi writes:
> > > Something I noticed while driving past the rail yard and while watching
> > > "Extreme Machines" or was it "Trains Unlimited" is a trick that both
> > > high-speed trains and freight trains use to reduce rolling resistance.
> > > The trick is to cut down the rolling resistance by cutting down the
> > > number of bogies/wheel sets. Instead of each car having two sets of
> > > wheels, two cars are connected to one sets of wheels. I regularly see
> > > flat bed cars that have wheels arranged like this.
> > >
> > > ____car____ ____car____ ____car____
> > > x--x x--x x--x x--x
> > >
> > > instead of the standard
> > >
> > > ____car____ ____car____ ____car____
> > > x-x x-x x-x x-x x-x x-x
> > >
> > > Anyone working on a reduced wheel set design? There are certainly some
> > > interesting technical issues invovled. Anyway, just trying to spark more
> > > discussion.
> > >
> > > Chris
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Message is in Reply To:
 | | Re: high speed railways and strange flat bed cars
|
| (...) Some very fancy engineering...you are not kidding. The car has to swing like a pendulum (or would LEGO shock absorbers have enough give to allow the the bottom of the car to swing out--maybe weights would help by adding a bit more inertia for (...) (26 years ago, 18-Mar-99, to lugnet.trains)
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