Subject:
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Re: Railroad Dilemma
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Newsgroups:
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lugnet.trains
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Date:
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Mon, 8 Mar 1999 13:42:50 GMT
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Viewed:
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1846 times
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How have you got this working? I sat down and had a long think about
it last night, and played checked out my points with a multimeter
to see which circuits
get broken when you move the points, and I can see that you need to cut the
rail on both sides.
But how do you stop the train from reversing direction as it passes
over the cut and suddenly sees the polarity of the voltage change?
The only way I can think of offhand would involve putting a switch between
the controller and the track which can reverse the connections, and link
the switch to a sensor that activates when the train runs over the cut.
Nasty but I guess doable with electronic components.
Is there a simpler way?
Simon
http://www.SimonRobinson.com
James Powell writes:
> Simon Robinson writes:
> > On this topic, has anyone ever tried cutting a bit out of the metal
> > in one of the rails (just on one side) to stop a reversing loop from
> > causing a short? I've been wondering about doing that, and wondering
> > how difficult it is.
>
>
> Yes. I have. In fact, I have a reverse loop to reverse loop layout.
>
> Its not hard at all. All you have to do is cut the rails (both of them) in 2
> pieces of track for each reversing loop. Then, you have a choice: LEGO or
> Radio Shack...
>
> You need 2 DPDT switches. (the technic ones, or from radio shack.)
>
> I think Matt Bates has a discription of how to wire it up on his web page
>
> (under projects)
>
> I can help if you want to do it with RS parts, rather than lego ones (it's a
> much cheaper way)
>
> James Powell
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Message is in Reply To:
 | | Re: Railroad Dilemma
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| (...) Yes. I have. In fact, I have a reverse loop to reverse loop layout. Its not hard at all. All you have to do is cut the rails (both of them) in 2 pieces of track for each reversing loop. Then, you have a choice: LEGO or Radio Shack... You need (...) (25 years ago, 26-Feb-99, to lugnet.trains)
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