Subject:
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Re: APT tilts thru curves in Real-Build ABS form
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 26 Jun 2001 20:56:48 GMT
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Reply-To:
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cmasi@cmasi.chem.ANTISPAMtulane.edu
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Viewed:
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998 times
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James Mathis wrote:
>
> My attempt to model the British Rail Advanced Passenger Train set is
> progressing. The "real-build" ABS consist is:
> 1. cab unit (driver trailer second)
> 2. passenger car (trailer second)
> 3. passenger car (trailer brake first)
> 4. motor unit (non driving motor)
> 5. passenger car (trailer brake first)
> 6. cab unit (driver trailer second)
>
> The names in parenthesis are the British Rail nomenclature.
>
> 1) The train cars do indeed tilt through curves. The pendular axis of
> rotation is just below the roof-line; thus, the car bodies swing "out"
> rather than tip "in". I'm not sure that is the best way to describe this
> motion???
>
> 2) There is no pancake gap between the wheels/trucks/bogies and the main
> frame of the cars.
>
> 3) The height of the train is equivalent to a standard official LEGO
> passenger train.
>
> 4) Typical gaps do exist between the ends of the wheels/trucks/bogies and
> the ends of the inverse undercarriage.
>
> 5) 9v train motors are located on the "non-driving motor" unit, as is
> prototypical.
>
> See this APT in ABS at:
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=5195
>
> Still need to order bunches of blue train windows.
> Still need to order some blue train doors.
> Black 2x2 tiles...
>
> I found it a little difficult to photograph the tilt. I hope some of the
> pictures convey that it really is tilting!
>
> I hope to be able to make another "non-driving motor" and another "trailer
> second", or perhaps the "restaurant/buffet first" car. I think an 8 unit
> real-build LEGO version of the APT might be near the limit of this
> simultaneous push-pull configuration with the 9v motors in the middle of the
> set.
>
> I think the APT-P (pre-production prototype) is the unit that saw
> revenue-paying service: 250 km/h 2+12 high-powered version (Three prototype
> trains were built). You can see very cool drawings of the proposed APT sets
> at The Railway Age, a home for the Preservation of the APT train set.
> http://www.therailwayage.co.uk/apt/APTConfigurations.htm
> You can click on some of the drawings to see floor plans of the interiors.
>
> You may notice that the real-life APT set does not have a blue-window livery.
> From the photos it looks more slate blue, dark gray, ????? Also, the roof
> is more white than gray. It's tough for me to tell. White would be a
> reasonable LEGO color for the roof. Alas, I've chosen gray for the time
> being....
>
> Thanks for reading and looking.
>
> later,
> James Mathis
You are a genius. Here I am spending my weekend building Mini's[1] while you are
building an APT. It looks great, and the pendular mechanism is simply the result
of the centripetal force, right? Very nicely done.
Chris
1. I mention the Mini only because it originated in England too.
--
See some of my LEGO creations at http://cmasi.chem.tulane.edu/~lego/
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Message has 1 Reply:
 | | Re: APT tilts thru curves in Real-Build ABS form
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| (...) The pendular mechanism has a lever-arm-wedge that pushes "out" and "up" on the undercarriage. The tilt could be the result of the centripetal force through a curve, but weight of the car and the "zero" gap above the bogie plate between the (...) (23 years ago, 26-Jun-01, to lugnet.trains)
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Message is in Reply To:
| | APT tilts thru curves in Real-Build ABS form
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| My attempt to model the British Rail Advanced Passenger Train set is progressing. The "real-build" ABS consist is: 1. cab unit (driver trailer second) 2. passenger car (trailer second) 3. passenger car (trailer brake first) 4. motor unit (non (...) (23 years ago, 25-Jun-01, to lugnet.trains) !
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