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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Wed, 15 Sep 1999 17:01:48 GMT
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Viewed:
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1213 times
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In lugnet.trains, Larry Pieniazek writes:
> 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.
And in all these years of discussion about switch powering and
modifications nobody ever noticed this before? I'm amazed...
(I don't own any 9V trains myself, just 4.5V. Those switches
are easy to control, apart from the difficulty of making
a tough connection to the 1-stud control arm. IIRC, a
4.5V signal drive is one of the first things I built with
pneumatics.)
> 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.
Isn't that the only way to do it in Lego, anyway? :)
-gbr
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Message has 2 Replies:
 | | Re: motorized switching rails
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| (...) No, you could use numbers, if you had number bricks or number tiles (the tile supply is limited so I think you're restricted to base 4 (0,1,2, and 3) numbering. The 1x1 number bricks are rare nowadays. -- Larry Pieniazek larryp@novera.com (...) (26 years ago, 15-Sep-99, to lugnet.trains)
| | | Re: motorized switching rails
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| (...) You could do it by posting semi-unique pieces next to the switch, and matching pieces on the fascia. The layout might look a bit odd with minifig heads and what-not stuck all over the track... Steve (26 years ago, 15-Sep-99, to lugnet.trains)
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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 (...) (26 years ago, 15-Sep-99, to lugnet.trains)
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