Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Installing My First Tomar Signal

3950 views
10 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    September 2011
  • From: Lexington, KY
  • 165 posts
Posted by RogerThat on Monday, July 13, 2015 10:59 AM

Blue painters tape.

 I wrapped a small amount of tape around post and now it fits snugly in the hole and can easily be removed.

Thanks for all the suggestions.

Roger

  • Member since
    July 2006
  • From: North Dakota
  • 9,592 posts
Posted by BroadwayLion on Sunday, July 12, 2015 5:38 PM

Silicone Caulk.

 

That is what  LION uses. And yes, things re removable with it.

 

ROAR

The Route of the Broadway Lion The Largest Subway Layout in North Dakota.

Here there be cats.                                LIONS with CAMERAS

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Sunday, July 12, 2015 4:56 PM

A dab of hot glue will work too.

Rich

Alton Junction

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Sunday, July 12, 2015 4:49 PM

RogerThat
The only remaining task is to figure out how to best secure the signal in the larger hole but allow it to be removed. I'm thinking maybe something like clay packed into the hole.

Tacky Wax from Walmart.
 
 
Rich

Alton Junction

  • Member since
    September 2011
  • From: Lexington, KY
  • 165 posts
Posted by RogerThat on Sunday, July 12, 2015 4:18 PM
Thanks everyone for the replies. I really like the idea of the micro connectors but in this case wanted to go ahead and finish the install. I went ahead and soldered leads and resistors on the workbench and drilled a hole just a bit larger than a resistor in the benchwork. Everything is connected and working fine. The only remaining task is to figure out how to best secure the signal in the larger hole but allow it to be removed. I'm thinking maybe something like clay packed into the hole.
  • Member since
    January 2009
  • From: Bakersfield, CA 93308
  • 6,526 posts
Posted by RR_Mel on Saturday, July 11, 2015 9:58 PM

I pulled a signal to take a picture of my wiring.
 
The K&S brass tube coming out of the bridge is ⅛” OD (.123"), it plugs into a ⅛” ID (.125") brass tube mounted in the track roadbed.  I can pull all 8 wires at once through the ⅛” ID tube by spacing out the pins one after another and twisting the wires together.
 Bridge
This signal is fed by a ten conductor flat cable terminated into a ten pin micro connector.  The individual wires from the bridge plug into the micro connector.  I have another identical bridge and 24 single head signals.  The single head signals have 4 wires with 4 pins that plug into a 4 pin micro connector.
 
 
 
 
Mel
 
 
Modeling the SP in HO scale since 1951
 
My Model Railroad   
 
Bakersfield, California
  • Member since
    July 2006
  • From: North Dakota
  • 9,592 posts
Posted by BroadwayLion on Saturday, July 11, 2015 8:24 PM

LION makes his own signals from LEDs and a 3/16 x 1/16" square sick of baswood. Him uses one resistor on the common side of the signal, you can see it on the signal mast to the left.

Him drills a 1/4" hole in the table surface and as you can see the mast extends below the surface. 

The signal on the upper level has a straw stuck between the two holes as a conduit for the wires. On the table to the left of the picture, the surface is on a 'mini-table" resting on top of the table seen here. There is no access to the layer between the two surfaces, thus the need for the straw.

I fish a 1/16" brass rod through both holes to guide the straw through both surfaces. I remove the brass rod, and insert the wires through the straw.

In the case of this arrangement you can see another straw extending through the lower table surface. I use a hook to draw the wires to the opposite fascia where there are binding posts (nails) to make the solder connections neet and prevent shorts.

Anyway, that is how the LION does it, and sometimes you just need to do things differently.

ROAR

The Route of the Broadway Lion The Largest Subway Layout in North Dakota.

Here there be cats.                                LIONS with CAMERAS

  • Member since
    January 2009
  • From: Bakersfield, CA 93308
  • 6,526 posts
Posted by RR_Mel on Saturday, July 11, 2015 6:07 PM

I do my thing a bit different than the rest of the guys on the Forum.  I extend the wires using #28 AWG long enough to easily get to the connectors under my layout, normally about 12”.  I buy the #28 wire from TCS.
 
I use micro connectors so that the signals are easily removable.  I buy the connector strips off eBay.  The connector strips are available in single or double row, 1x40 pin .1”/2.54mm or 2x40 pin .1”/2.54mm socket connector strips.  I keep a good stock on hand of both single and double as they are usable for all of my layout wiring.
 
The connectors can be cut to make any configuration of contacts.  I cut single row connectors for one male pin or a single connector for each wire coming from the signal so that they will easily slip through a small hole or in my case tubing through the scenery/layout.  I then use a 4 pin female socket with color coded wires back to my controller.
 
I solder the resistors to the female connector as needed.  I either seal the connections and resistors on the female connector with Amazing Goop or heat shrink.  Goop is clear so it’s easy to see the wire colors for identification, when I don’t use clear heat shrink I simply color code the connectors with a drop of paint.  
 
I have a post on my blog on the micro connectors.
 
I have 32 signal heads and two gate crossings on my layout all wired with the micro connectors.  I use K&S brass tubing for mounting my signals.  I glue a larger tube into the layout and use a smaller tube mounted to the signal so it will slip in and out easily.
 
Standard 4 wire or two pair telephone (JKT) wire works great for feeders (red, green, yellow & black), low cost and correct colors.
 
 
 
Mel
 
 
Modeling the SP in HO scale since 1951
 
My Model Railroad   
 
Bakersfield, California
  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Saturday, July 11, 2015 5:01 PM

Roger, I have tons of Tomar signals on my layout.

Before I install them on the layout, I do a number of things on the work bench.

First, I solder the LED wire on one leg of the resistor.

Second, I solder a 12 inch length of 22 gauge stranded wire to the other leg of the resistor to lengthen the wires for easier installation.

Third, I install a length of heat shrink tubing over the entire resistor as insulation and added strength.

Fourth, I drill a hole through the plywood surface of the layout and feed the wires through one at a time.

The hole is big enough to allow the heat shrink tubing to fit through, but small enough so that the base of the Tomar signal does not fall through.

Works like a charm.

Rich

Edit Note: There is no resistor on the white wire.  But, I solder a 12 inch length of 22 gauge stranded wire to the white Tomar wire and then cover the soldered spot with heat shrink tubing.  I do this because the Tomar wire is so thin that it needs to be strengthened before installing the Tomar signal on the layout.

Alton Junction

  • Member since
    November 2013
  • From: Los Angeles
  • 283 posts
Posted by JOHN BRUCE III on Saturday, July 11, 2015 4:04 PM

I think the best answer is to save all possible crawling and bending. Think maintainability. i would mount terminal strips either on L girder sides, possibly plywood panels on layout legs, whatever will let you see them and reach them easily. You're best off using edge connectors with Tortoises and soldering to them before you attach them to the machine. By the same token, do all soldering before mounting the signal and drill a hole big enough to put spade connectors, resistors, etc through.

My blog: http://modelrrmisc.blogspot.com/
  • Member since
    September 2011
  • From: Lexington, KY
  • 165 posts
Installing My First Tomar Signal
Posted by RogerThat on Saturday, July 11, 2015 3:59 PM

Before I mount the Tomar signal on my layout I need answers to the following: 

I have drilled the hole for the signal just big enough for the tube at the bottom of the signal to fit into. However, this hole will not be big enough to pass the resistors that need to be connected to each led's wire. This gives me two choices. Should I drill the hole bigger to fit the resistors, or do I need to attempt to do my soldering under the benchwork? Or maybe a third choice? Do I install a terminal strip right next to where signal is mounted and use it to attach resistors and the wires running to the DC source and Tortoise switching terminals?

How do others complete the wiring under their benchwork? I know where to hook the wires, the resistor values to use, etc.  Im interested in the method used to accomplish that.

Thanks,

Roger

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!