I need to find out the size of the LEDs to use with TOMAR INDUSTRIES HO
signal heads (specificly #6044). I know I can just buy the LEDs the
TOMAR sells, but the TOMAR's price is really rather high (6 for US$7.65
~= US$1.28 each -- I can get these LEDs from Mouser for US$.15 each).
TOMAR does not say exactly what the size of the LEDs are. I *guessing*
2mm (just under 7 scale inches), but want to be sure.
Robert Heller -- 978-544-6933
Deepwoods Software -- Download the Model Railroad System
Those must be 3mm O.D. LED's.
I have made my own HO scale single target signals and used 3mm bi-
polar green/red LED's. I put the LED in a cordless drill and file down
the flange. I then switch the LED in the drill so the front is
showing. I have done the same using a drill press which is easier and
I then flatten the front and with the file, make the front the proper
size for HO scale or fits the hole in the target. That way the front
of the LED is flat like a real signal.
I get a few plastic straws from a coffee shop and cut them at an angle
so they become a very nice hood.
Common sense says to email Tomar and ask for the size but I bet those
are 3mm unmodified. They show an email option. I always tell people to
go to the source and then go to a forum if no answer from the source.
The photo shows a flange on the LED and all I have seen so far with
the flange are 3mm and 5mm. Granted I have not seen a lot of LED's so
a question to Tomar would be good.
Also, Trains.com would be a much better set of forums to ask. Many
more users there than here. Use the Model Railroader, Electrical DCC
There's a pretty good amount of plastic covering the actual diode, so
yeah, you can go to town quite a bit on it. I've even used a
bench-mounted sanding wheel on them if I was in a hurry. I don't
recommend messing with the very end of the LED though - keep that shiny
and transparent if you can, or you'll lose some brightness, and on
multi-color LEDS, it might not combine the light as well if you flatten
it out. Personally, I think the rounded end looks nicer than flat anyway.
Ha, I did the same thing when I wanted to make signal lights to go near
tunnel entrances, but I used plastruct tubes, that happened to perfectly
fit the LED. I also glued a washer around the back side to make it look
like the round flange you commonly see on those signs, and then painted
the whole business matte black before installing the LED.
In my experience, manufacturers almost never mess with LED cases.
Sometimes you might see some scratch marks like maybe it needed a little
persuasion to fit in their housing, but mostly, they build the housing to
fit the LED, not the other way around. *
* PV Something like badgers, something like lizards, and something
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