Subject:
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Re: GMLTC Update
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 23 Jul 2002 10:30:36 GMT
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Viewed:
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962 times
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In lugnet.trains, John Gerlach writes:
> In lugnet.trains, Jason J. Railton writes:
> > Fairly easy to make your own:
> > 1. Cut a 1m cable in half.
> > 2. Take one half and shorten one of the two wires at the end by two inches.
> > 3. Solder a reed switch to the ends so it lies along the cable.
> > 4. Put some heat shrink over it all.
> > 5. Scrape/file/melt the middle 8 studs off a 2x6 plate.
> > 6. Epoxy the switch onto it.
> > 7. Mount it lengthways across two sleepers, or centered on one sleeper of a
> > curve.
> > 8. Check a train motor can just clear it.
> >
> > Some people like to put a series resistor on it, but I've never had any
> > trouble with just a switch.
> >
> > Jason J Railton
>
> You make it sound so easy... <grin>
>
> Do you have to orient it a certain direction? Knowing my luck I'd install
> it upside down or something...
>
> JohnG, GMLTC
It's not too hard. I'm rubbish at soldering - I always overheat things.
This worked fairly well though. Heat shrink is easy to use too - just bring
it near heat like a haridryer, lighter, or cooker hob to tighten it.
You have to lay the reed switch along the length of the track to get it to
work. I use a glass tube type (i.e. not in a more expensive wall or
circuit-mounting plastic case), and it doesn't matter which way up or round
they go so long as they're aligned along the direction of travel of the
train. The magnetic field around it needs to be North at one end of the
switch and South at the other. If the switch is placed across (not along)
the field, it won't work.
Jason J Railton
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Message is in Reply To:
 | | Re: GMLTC Update
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| (...) You make it sound so easy... <grin> Do you have to orient it a certain direction? Knowing my luck I'd install it upside down or something... JohnG, GMLTC (22 years ago, 22-Jul-02, to lugnet.trains)
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