Full function signal system

[Olddude]

O, nevermind my last post, I just figured it out. Do I feel dumb.

These are scratchbuilt, with a jig I designed and built.

I have constructed 30 signals of brass and copper. Some dual interlocks.

Dave

[Bernd]

What size ledd's. Are in your signals. I use 1.6mm bi-color in mine
Would love to post a pic of my ho scale search lights but, the thread won't let me.

Dave

These signals were built over 25 years ago. The only thing available at that times where, I believe 3mm dia. LEDS. To get the 3 color light I filed down three LEDs and glued them together and cast them in a clear resin. That's about all I can tell from memory at the moment. I did take 35mm slides and of course they are located among the thousands of others I took back then. I'll need to dig them out from were ever they are and take some individual pictures of them.

Bernd

Bernd

[labdad]

Very cool sir!
Lots of led's available now. 👍
MJinTN

[Bernd]

Dave,

Found my pictures I took back when I built these signals.

Pictures shows a test set up. The little white rectangle is the LEDs I worked with.



This shows how I stacked a red, yellow and green to form a three colored search light. I had to file down the size to make them all fit in diameter of the prototype glass lens size.



The back of a search light signal with the LEDs encased in a clear resin.



Pictures I took today with a better camera and in color. Note the realistic weathering dust. 



Here you can see the green and red. Apparently the yellow doesn't work any more. Note the green LED up near the top and the red near the bottom.



A much better picture of the back side showing the encased LEDs and wiring.



It would probably be easier to build one of these signals today with the much smaller LEDs. Those black and white pictures were taken with a Konica 35mm camera with black and white film for a proposed article back then. It never went any further than the pictures.

Bernd