Subject:
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Re: motorized switching rails
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 16 Sep 1999 01:06:44 GMT
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Viewed:
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614 times
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I would love to see instructions or pictures of this device.
I suppose I could tinker around with the idea on my own as well.
John Matthews
Larry Pieniazek <lar@voyager.net> wrote in message
news:37DFA77D.E5BD4ECB@voyager.net...
> GMLTC has pneumo switch throws. They worked in the lab but haven't yet
> been proven at a show. The air lines are (gasp) non LEGO aquarium
> tubing...
>
> If you go to one of the many GMLTC teasers (there must be 4, including
> mine, the semiofficial standing and the Demlow and Foster sites) and
> assidiously root around through the pictures, you will find some
> pictures. the actual mechanism is stunningly simple... just a small
> pneumo cylinder mounted at a vertical angle. The angle is to ensure that
> the range of motion is just the right amount.
>
> The whole lashup is powered by a large 4 cylinder compressor.
>
> Now, you say, that's not enough pressure. GMLTC cheated... they did NOT
> modify the switches. However, the range of motion of the cylinder is
> such that it moves the switch through the loose part!!! the switch
> internal mechanism "locks down" at the very end of ITS range. If you
> stay within the center of ITS range, you avoid lockdown. The ends, just
> before lockdown do move the points far enough. Thus a small actuator and
> low pressure are sufficient to work the switch.
>
> Another neat trick is that the turnout switches are color coded with
> small bricks placed on the stands, and technic beams are used in the
> module side fascia to let the tubing out. The beams are color coded to
> match the switches so you know which lever throws which turnout.
>
> --
> Larry Pieniazek larryp@novera.com http://my.voyager.net/lar
> - - - Web Application Integration! http://www.novera.com
> fund Lugnet(tm): http://www.ebates.com/ Member ref: lar, 1/2 $$ to
> lugnet.
>
> NOTE: I have left CTP, effective 18 June 99, and my CTP email
> will not work after then. Please switch to my Novera ID.
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Message is in Reply To:
 | | Re: motorized switching rails
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| GMLTC has pneumo switch throws. They worked in the lab but haven't yet been proven at a show. The air lines are (gasp) non LEGO aquarium tubing... If you go to one of the many GMLTC teasers (there must be 4, including mine, the semiofficial standing (...) (25 years ago, 15-Sep-99, to lugnet.trains)
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