Deprecated: Non-static method PageLinesTemplate::current_admin_post_type() should not be called statically, assuming $this from incompatible context in /home/ehobbyne/public_html/wp-content/themes/pagelines/admin/class.options.metapanel.php on line 30

Deprecated: Non-static method PageLinesTemplate::current_admin_post_type() should not be called statically, assuming $this from incompatible context in /home/ehobbyne/public_html/wp-content/themes/pagelines/admin/class.options.metapanel.php on line 30

Deprecated: Non-static method PageLinesTemplate::current_admin_post_type() should not be called statically, assuming $this from incompatible context in /home/ehobbyne/public_html/wp-content/themes/pagelines/admin/class.options.metapanel.php on line 30

Deprecated: Non-static method PageLinesTemplate::current_admin_post_type() should not be called statically, assuming $this from incompatible context in /home/ehobbyne/public_html/wp-content/themes/pagelines/admin/class.options.metapanel.php on line 30
DIY Operating Signals Using PABX Solenoids | Model Railway Hints, Tips, How To Articles and Reviews at Model Trains Online

Making the semaphore style signals on your layout operate just like the real thing is often a costly process, requiring the use of a rather price point motor for each signal you wish to automate. But it doesn’t have to always be that way, as Brian will show us here in this excellent tutorial he’s sent in. Always keen to make use of recycled electrical components and other resources, Brian got his thinking cap on and came up with a somewhat lower cost solution.

“Hi Justin,

I am very keen on making my own models using recycled materials where possible.

I have made a couple of OO gauge signals operated by salvaged telephone relays from an old redundant PABX.

The relay contacts may be used to isolate a section of track in front of signal so that the train may only proceed when the signal is down.

Pic 1 Relay readya

Pic 1 shows relay with side casing cut away and operating wire soldered on.   This pushes lower quadrant signal into the down position, for upper quadrant signals invert the relay before fixing.

Pic 2 Housinga

Pic 2 shows Plasticard housing with top plate ready to drop into hole cut in baseboard

Pic 3 signal in placea

Pic 3 shows Signal in place on the layout.

Brian,

Johannesburg”

Well, thank you Brian, for sending this brilliant tutorial in… I’ll be keeping my eye out for an old PABX unit now! As always, if anyone has and questions, comments or suggestions for Brian, please feel free to post them via the comments forms below and we’ll pass them on to Brian.

Share →

2 Responses to DIY Operating Signals Using PABX Solenoids

  1. Colin says:

    This is a really interesting and tantalizing article. For those of us who are not too ‘electronics literate’, what is a PABX and are such solenoids available elsewhere? I recently visited a model railway exhibition in Taunton and there was a man demonstrating a very similar arrangement but he had somehow added a weight on what looked like a pendulum, which produced a prototypical signal ‘bounce’.

    • Justin says:

      Hi Colin,
      A PABX is a kind of telephone exchange unit used to route calls in offices. The older type used relays. I guess in theory you could use any type of solenoid, you just need to look out for old electrical stuff at your local tip/recycling centre that uses 12 to 16v solenoids. Most of the things I “recover” from our local tip just require a donation of £1 or so to a local charity or the chaps at the recycling centre 🙂

Leave a Reply

Your email address will not be published. Required fields are marked *

test 1

xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx