Subject:
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Re: Reversing Loop without Insulated Tracks
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 11 Aug 2004 13:48:18 GMT
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Viewed:
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1686 times
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In lugnet.trains, Ross Crawford wrote:
> In lugnet.trains, Larry Pieniazek wrote:
> >
> > I contend there's still a short potential when any wheelset traverses B
> > because at least momentarily, you're aligning the turnout (although it is
> > spring loaded so it springs back as soon as the wheels go back) to steer
> > power onto the loop instead of the dead stub end. That's a short.
>
> Well yes, but not because the short switched track segment is displaced - the
> electrical routing is not done through that, but via contacts hidden inside
> the switch, which don't get displaced. The short is caused by the electrical
> pickup in the motor, because it connects the 2 axles, one of which is on
> either side of the isolated section of track.
Thanks for the reminder, I forgot about that. So random single wheelsets won't
impact this, only bridging from one wheelset to another within the motor (or if
you connect motors to get better pickup performance as Mark Bellis does, across
motors)
Finding pics of these internal contacts is fairly hard. Most of the people that
modify turnouts (for example: http://news.lugnet.com/org/ca/vlc/?n=1198 ) to
make them easier to motorize only tend to take part of the plate off instead of
the whole thing.
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Reversing Loop without Insulated Tracks
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| (...) Well yes, but not because the short switched track segment is displaced - the electrical routing is not done through that, but via contacts hidden inside the switch, which don't get displaced. The short is caused by the electrical pickup in (...) (20 years ago, 11-Aug-04, to lugnet.trains, FTX)
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