Subject:
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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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Wed, 30 May 2001 15:26:58 GMT
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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
train. (Was it the first to carry ticket-paying passengers?) So, it seems
appropriate to outfit an APT with my first pendular mechanism.
In the Spring of 1981, I lived in England (11 years old) and got to ride the
InterCity 125 to Edinbourough(spelling, sorry). Fantastic ride! In the little
town of Grantham, Lincolnshire, I got to hear the 125 set blow its dual-tone
two-note horn as it blasted through town. (We lived in Harlexton Manor, in
case anyone reading knows that place.) I loved hearing that horn and the
wish-whoosh of the 125. :-)
OK, back to the APT....
The APT was soon to be revealed. I must have seen preview photos on the
tele...? I thought it was a very cool serpantine looking train set with a very
aggressive snout. I even like the contrasting yellow nose. :-)
With no further delay (but, don't buy any tickets, yet!), here is my version 1
of the APT:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=4715
Tilting Mechanism:
Yes, it is really in there. I've proven the mechanism on a single 4-axle
dual-bogie passenger car. But, this APT is currently only CAD-based. From the
few photographs of the APT that I have found, it is unclear to me how the
wheelsets are composed near/at the union of adjacent wagons. I have modeled
adjacent wagons to share a 2-axle wheelset. Is this correct?
So, my APT v1 model may not run/tilt quite right. But, hey, failures of my APT
set would be on par with the real-life set...sadly.
The tilting mechanism adds no additional height to the train car. In fact, the
pivoting bogie plate rest under the wagon main carriage just as in a regular
train wagon if built by the Technic hole-plate technique (as opposed to using
the LEGO train base-plate).
Any pointers to additional photos of the real-life APT set would be
appreciated. Thanks.
Advanced Passenger Train
British Rail
Very limited service in 1981-82(?)
Employed a pendular (tilting) mechanism for projected top speed of 150mph.
See real-life photos at:
http://mercurio.iet.unipi.it/pix/gb/electric/APT/pix.html
http://www.o-keating.com/hsr/apt.htm
http://www.freefoto.com/pictures/transport_rail_modern/apt/index.asp
Thanks for looking...and reading!
later,
James Mathis
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Message has 6 Replies:
 | | Re: Brit-Rail APT (Advanced Passenger Train)
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| "James Mathis" <thakius@nmt.edu> wrote in message news:GE5Mwy.49r@lugnet.com... (...) Just don't make the mini-figs ill... :) (...) little (...) If you need a fix, here is a sound of the 125 horn: (URL) I should as a resident point out that it is (...) (23 years ago, 30-May-01, to lugnet.trains, lugnet.loc.uk)
| | | Re: Brit-Rail APT (Advanced Passenger Train)
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| James, That is a very nice looking model. Have you built a physical model? I also have a question about the rendering - did you model the track? Is there a dat file availible for it? Bob (...) <snip> (...) (23 years ago, 30-May-01, to lugnet.trains)
| | | Re: Brit-Rail APT (Advanced Passenger Train)
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| "James Mathis" <thakius@nmt.edu> wrote in message news:GE5Mwy.49r@lugnet.com... (...) curves. (...) scheme, (...) seems (...) James, that is a stunning model -- PLEASE keep the DAT up to date as you refine it and share it with us all! Huw (23 years ago, 30-May-01, to lugnet.trains)
| | | Re: Brit-Rail APT (Advanced Passenger Train)
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| (...) Someone brought a working tilt train along to Tony Priestman's Lego Fest earlier this year. Who was it? I was hoping to have another look at it at Gosport, but it didn't show. It worked by having a large bogey pinned upright then pivoted (...) (23 years ago, 31-May-01, to lugnet.trains, lugnet.loc.uk)
| | | Re: Brit-Rail APT (Advanced Passenger Train)
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| "James Mathis" <thakius@nmt.edu> wrote in message news:GE5Mwy.49r@lugnet.com... (...) curves. (...) scheme, (...) seems (...) My physics might be completely wrong here, but the APT system was active wasn't it, in that it forced the train to lean (...) (23 years ago, 31-May-01, to lugnet.trains)
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