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PostPosted: Mon Jul 20, 2015 8:11 am 
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Joined: Mon Jul 20, 2015 6:42 am
Posts: 1
The signals used around Sydney, NSW do not use "standard" CTC aspects, but a dual head (2 or 3 aspects over 3 aspects) system (plus plenty of other subsidiary options). As I wanted to have correctly signalled movements on my layout, I have to scratch build every signal (more than 20). 3mm LEDs provide the illumination, and I found some 2 and 3 aspect moulded heads on the internet, but I needed to be able to solder the LEDs so they fitted into the heads, and also provided a rigid support for multiple heads mounted on posts, or gantries. I had bought some Fast-Track ties a while ago, and these are the perfect width for fitting between the 2 wires of the LEDs, and also fit nicely into brass tube masts. The LEDs are all wired the same way round, and gaps are cut in the ties to keep them isolated. Wires from each LED will be wired to an Arduino for actual control (but that's a whole different story).

To save a 1000 words, photos attached.

Ross McConchie
Canberra
Australia


Attachments:
File comment: NSW (Aust) style signal mast. Six aspects, G/Y/R over G/Y/R.
HO scale, 3mm LEDs on Fast-Tracks tie.

2015-07-20 19.54.47.jpg
2015-07-20 19.54.47.jpg [ 325.53 KiB | Viewed 937 times ]
File comment: NSW (Aust) style signal mast. Six aspects, G/Y/R over G/Y/R.
HO scale, 3mm LEDs on Fast-Tracks tie.

2015-07-20 19.54.56.jpg
2015-07-20 19.54.56.jpg [ 547.48 KiB | Viewed 937 times ]
File comment: NSW (Aust) style signal mast. Six aspects, G/Y/R over G/Y/R.
HO scale, 3mm LEDs on Fast-Tracks tie.

2015-07-20 19.55.19.jpg
2015-07-20 19.55.19.jpg [ 314.37 KiB | Viewed 937 times ]
File comment: NSW (Aust) style signal mast. Four aspects, G/Y/R over R.
HO scale, 3mm LEDs on Fast-Tracks tie. 3 aspect signal shield from the internet. Single aspect shield cutdown 3mm LED bezel.

2015-07-20 19.56.39.jpg
2015-07-20 19.56.39.jpg [ 222.58 KiB | Viewed 937 times ]
File comment: NSW (Aust) style signal mast. Five aspects, G/R over offset G/Y/R.
HO scale, 3mm LEDs on 2 Fast-Tracks ties.

2015-07-20 19.53.11.jpg
2015-07-20 19.53.11.jpg [ 141.9 KiB | Viewed 937 times ]
File comment: The real thing in Sydney. Five aspects, G/R over offset G/Y/R.
IMGP4785.JPG
IMGP4785.JPG [ 138.14 KiB | Viewed 937 times ]
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PostPosted: Fri Jul 24, 2015 11:53 am 
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Joined: Tue May 29, 2007 12:20 pm
Posts: 100
Location: Oklahoma City, OK
Looks like you have lots of work to do but they look great. Enjoy the working signals.

_________________
Kurt Konrath

SP was king of the road, Cotten Belt will run forever! D&RGW will rule the hills!


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