Tuesday, October 18, 2016

St. Clair Sub Signal Install - Part 5 (Phase 4 - Advanced Interlocking)

October is here and with it brings our next phase of the St. Clair Sub ABS signal system install. This post we will walk through Advanced Interlocking at the Grays Lake West Siding Switch (WSS). Using the concepts we have learned through our previous posts we will connect three signals with the TS2 circuit and a Blue Point Turnout DPDT switch.

Readers: The signals and signal systems that I will be reviewing and installing in my Layout How To series were provided at no cost by Azatrax LLC. However the selection, installation, operation, and opinion of these signals and systems are 100% my own. 

Eastbound signal at West Siding Switch (WSS) Grays Lake installed

Kicking off this phase like we have with all in the past, it is important to first read the directions, lay out your materials, and have all of your tools. This install requires the same tools from Part 4 - Phase 3 which has been consistent since our first block. Following Azatrax's instructions both of the sensors for the dual head signal need to be located prior to the switch. 


Courtesy Azatrax LLC.

 Marking the location where sensors will be mounted prior to drilling holes

Looking up from lower deck - holes for signal and TS2 sensors. 

 Installing IR LEDs first between the concrete ties

 Installing IR Receivers next through tracks. Note the angle of the receivers and LEDs is key

The end of the LEDs and Receivers can be gently bent a little to get the correct angle. 

IR sensors installed (location noted by fingers) ready to connect to TS2 and test 

 Wires from sensors fed through foam board. 

Until the final connections are complete I use blue painters tape to hold the wires in place keeping all the wires neat and organized. 

 Wires connected to TS2 - testing with multiple types of cars and locomotives.

Before moving beyond this step - ensure the sensors detect properly. Refer to Azatrax directions for troubleshooting, adjust sensors as necessary, test until it is right.


Once your sensors install is complete and operating properly, we can turn our attention to adding signal to the TS2. For this block we will install a dual head BLMA (right hand) signal and two BLMA block signals (one right hand and one left hand).

 Signals pre-wired and staged at Bay Yard ready to install

Wiring signals before installing on the layout helps tremendously with time savings and frustration factor. I used 22 ga. wire for the signals in this project and probably could have gone a tad smaller but this size seemed very durable.

 Threading the wires through the foam board. Use painters tape to band the different signal heads together prior to install. 

 Instead of trying to take pictures of connecting the wires I figured it was best to provide step by step guides on how to connect all three signals and make them operate as planned. 

Step 1 l is identical to how we have installed signals on all of the previous blocks with a east and west signal.

 Sensors, Eastbound, and Westbound signals connected to TS2 board.
Step 2 we dive into the advanced interlocking. By connecting signals #2 and lower head of signal #1 to the DPDT we are able to drive the signal aspect to either be red or green depending on how we have thrown the switch which drives the Blue Point turnout controller. The DPDT could easily be a Tortoise type machine. 

 View of Blue Point Turnout Controller with wires soldered to connections below.
 Step 3 uses the concepts from basic interlocking in our last post using the 1000 ohm resistor to cause the TS2 to sense a detection. This happens when the switch is thrown the DPDT routes the power from #6 to #4 where resistor causing a detection. Once these connections are complete spend some time operating the signals and running trains through them before connecting with TS2 #5 at Upper Huron. 

 Using switch knob on fascia to move throw switch and test DPDT / signal operation 

View of TS2 connections between TS2 #5 and TS2 #6. Using plastic clips to hold TS2 power cables and (LE to LW) and (C to C) wires.

Overall view of West Siding Switch at Grays Lake


The following diagram below describes signal operations at the west siding switch using the TS2 and DPDT switch. It is important to remember that this is not a CTC control point, the signals do not convey authority to enter main track. 

- Upper head of eastbound and westbound mainline signals are ABS intermediate signals
            These signals indicate block occupancy only or if switch is thrown against mainline

- Lower head of eastbound and westbound signal siding signal display switch position only
            Red - signal lined normal for mainline
            Green  - signal lined reverse for siding

Direct Traffic Control blocks issued via dispatcher provide authority to enter to operate over main track. 

Proceed indication with next two blocks clear / Switch lined normal

 Approach indication with next block at Gerhard occupied  / Switch lined normal

Stop indication due to caboose just traversing into block / Switch lined normal 

 Switch thrown against mainline within in block / Switch lined reverse to siding

Westbound signals - Left signal for siding (switch indication) / Right signal indicating block occupancy 

With the westbound siding switch and signals operating, I am now wiring up the eastbound siding switch and signals. These signals will operate via TS2 Circuit #7 prior to the mainline going into east staging. Beyond the detection circuit at the east switch one more TS2 #8 will be installed just ahead of the east staging yard throat. This final circuit will provide proper advanced block occupancy indications whether operating east or west. 

I hope you have enjoyed this install post. For me it did stretch my wiring abilities where I learned how to tackle more complex wiring. Breaking it down into smaller steps really helped bring it all together. While it is not a CTC control point, the ability for the TS2 to drive four signal heads at a siding can allow you to have an effective signal system with ABS as the basis. With our DFW Interchange session coming up next weekend, the system will add another layer or railroading for the operators. Please feel to ask questions about the install, one of my goals with this series is showing that you can add this type of setup to your railroad. 


Friday, October 14, 2016

Happy Friday

I hope everyone has a great weekend whether you have to work or have time off to relax, enjoy family, and model railroad.

Alot of work ongoing for the next signal install update coming next week. In the mean time here is a sneak peak of the ongoing work at Grays Lake. Enjoy!

Wednesday, October 12, 2016

Wednesday, October 5, 2016

Early October Update

First off, I truly appreciate everyone who reads my blog. Your viewership and support is why this blog is here and continues to grow. Lately we have discussed a lot about sensor / signal installation. This project has been a lot of fun and has really built my confidence in this type of work, by the end of the month we will wrap it up. It is important while working on the signal project to continue showcasing other work happening on the layout, trust me there has been plenty of other St. Clair Sub on-goings so lets take a look. 

This past week I picked up two American Limited Models Trinity 3281 covered hoppers. These models are fantastic, and even better when you get them 50% off!

These cars will be re-marked for NRLX under lease to Graystone Cement. We will dive into the backstory and other proto-freelance railroad connections in a future post. 

Beautiful paint job - unfortunately the logo and marks gotta go

Logo gone - gotta clean up the smudge, didnt expect this... oops

Using the polymer eraser the smudge cleared up quite nicely

Car complete - ready for Graystone Cement logo and NRLX marks

This was my first time using this method, so not exactly perfect. To clean up the smudge I used a Polymer eraser which made quick work and cleaned the car of quite well.

Assembly line accomplished 

Tools for this how-to (Microsol, Cotton Swabs, Polymer eraser, and time 5-6 minutes). After dabbing the Microsol onto the bath tissue with the swab on the lettering you want to remove it just takes time. After 5-6 minutes using the swab you can remove the lettering. Clean up with the eraser (gently). 

Practice makes perfect - 45 minutes later 5 cars were ready for new marks

Thanks to Shannon Crabtree for the tips on doing this successfully.

While the signal gangs are working from Upper Huron to Grays Lake, the engineering department took the opportunity to rehab the Quincassee Creek Bridge. 

            What bridge?

I built this Walthers Single Track Through Truss Bridge kit back in the fall of 2007. After a few moves and being on its third MCIS layout it was in need of work.

After around an hour all of the loose parts had been resecured and it once again looked like a solid bridge. But to takes things one step further, I decided to add a walkway and handrail the length of the bridge track. 

Tichy makes a great kit for adding walkway or handrails to a bridge pretty easy. It took three kits or six walkway panels to complete one side. Once they were glued to the outside of the bridge track I let it dry 24 hours. The next day I used a fine 3M sanding block to smooth the side of walkway for the handrail install. After sanding complete the handrails were install just as easy as the walkway went on. For the bridge structure rehab i used Tenax 7R, while the handrail install was best suited with Loctite Super Glue and a toothpick for application. 

Finished bridge - side view

Finished bridge - back on layout

As you can see from the pictures a simple $2.50 detail kit added a lot to this well done structure. Overall a $8.00 add.

Moving at full speed on Part 5 (Phase 4) of my signal install series, I have been getting all of the signals tested and pre-wired. 

On the east end of Grays Siding the track layout dictated I mount the signal for the passing siding to mainline overhead. There is a prototype for everything they say and a double track modern single head signal is no exception.

Photo of prototype at New Iberia, LA. on BNSF Railway. (Courtesy & Copyright: Donovan Reed)

This signal modern bridge for the siding is fairly new. This territory is ABS with the siding having a spring switch from siding to main. Both signals on the bridge display the same aspect, remembering that ABS signals only show block occupancy not authority.

My basis for the project was the right handed or left handed BLMA overhead signal bridge. 

- First thing to do is unravel the ends of the four wire sets and test to see which are associated with which signal head before making any modifications.
- Test signals and mark wire sets (I use the Logic Rail Tech signal test - very helpful)

- Once wires are marked proceed to cut the magnet wire that is for the upper signals which will be discarded.
- Cut off the upper signals along with handail.
- Smooth with a file the cut locations and with that you have a overhead signal bridge for signal territory. 

Finished product turned out exactly as expected - will look great protecting at East Grays.

My layout has hosted no less than 8 operating sessions in the past two years. Always looking to improve I took at hard look at the station diagrams and wondered how I could improve. Simplification was the answer.

Diagram for Grays Lake Industries above and mainline / siding below

For each station I have begun making the diagrams smaller with one focusing on the mainline through the station and another diagram for industries either located adjacent to the main or on a spur.

Old meet new - same information but easier to read and less "intense"

The goal is a road crew operating through Grays Lake is focused on the main so the mainline diagram focuses on items they need to see, while the local would use the mainline diagram but then focus attention to the industry spur diagram. In addition to these new diagrams a small card is provided on the fascia for each industry outlining the work, commodities, and special instructions. 

Industry cards for Cooperative Elevator and 3M at Grays Lake, Michigan

One key layout design element is selectively modeling the modern Michigan sugar beet industry in the form of a Sugar Beet Processing Plant at Upper Huron. This industry with its numerous inbound and outbound commodities has been intimidating to capture, and quite frankly over the last year has stalled any trackwork that could used in an ops session. Working with Dean Ferris over the last week we regrouped and outlined the industry focus, givens / druthers, and adapted a plan that captures the feel in the space and allows for a great deal of operating potential on the L-BAPB (Port Belle Turn) during a session. Here is a photo of the industry layout as of this evening. 

Michigan Sugar @ Upper Huron will keep an operator busy for a good 1/2 the session

Nothing like 2 pounds of Fenugreek seed to help inspire as well. I see a future how-to hopper load post in this fall.

I hope these few photos provide inspiration in case you are having a hard time with an industry setup. My suggestion; engage a friend and let them give a fresh perspective, it is amazing what you can accomplish with a little teamwork. 

October has just begun and the past few days have seen alot of activity. Be sure to check back soon for my next signal install post.

Have a safe October,


Friday, September 30, 2016

Upper Huron Wye Signal Operation

On Wednesday we discussed the installation of the TS2 signal circuit along with process to allow interlocking operations. Tonight we are going to walk through the operation of the interlocking function at Upper Huron. 

Readers: The signals and signal systems that I will be reviewing and installing in my Layout How To series were provided at no cost by Azatrax LLC. However the selection, installation, operation, and opinion of these signals and systems are 100% my own. 


Our example train the R-GEPB-29 (Road Switcher Gerhard to Port Belle of September 29th) led by MCIS 3833 has be issued track authority by St. Clair Sub dispatcher to proceed from mainline DTC Block Lacey (LACE) to DTC Block Upper Huron Jct (UJCT) via Upper Huron East Wye Switch (EWS). 

Upon reaching the signals / block boundary at east wye switch Upper Huron, the train comes to a stop and the conductor climbs down to change the route. 

Reaching the signal mast, the conductor opens the control box and pushes the button "Press to Occupy". 

The operator throws the Peco switch from normal to reverse to the east leg of the wye at Upper Huron. 

The operator acting as the conductor in reality pushes the "Press to Occupy" on the panel. This action shunts the signal from a "clear" to "stop" indication. 

With signal indicating the east switch at Upper Huron block is now lined reverse and authority given by dispatcher to occupy the UJCT DTC block, R-GEPB-29 proceeds onto the east leg. 

Train departs past the signals and operates onto the east leg of the wye which ties directly into the Port Belle Sub.

Once the train is in the clear onto the Port Belle Sub the conductor uses the north end control box where the east / west wye legs come together to line the switch back to normal and clear the signal. 

With the train on the Port Belle Sub our TS2 system does not know this as it expects to either see the train reverse over the sensors at the east switch or continue over the sensors at the west switch. Since we are doing neither, we hold down the "Press to Reset" button which clears the block back to green.

At this point once the operator has verified signals display "clear"and switch is re-lined the R-GEPB-29 continues on its journey. The abs signals at the East Wye Switch stand ready for their next use.

The same process happens coming from non signal territory to signal detected territory with the exception that instead of pushing "Press to Reset" after lining the switch back to normal, the operator would simply push "Press to Occupy" again. This has to do with the train coming onto signal'd territory so the system knows there is a train occupying an actual block in signal territory versus our example above where the train left the signaled territory requiring us to manually clear the block. 

This is a very simple example of using the interlocker ability, one example to automate further would be having the "Push to Occupy" button drive a tortoise motor which act as the SPST Off-On driving the TS2 to change the signal. There are plenty of other examples of ways to use this function such as a drawbridge. Take a look at the Azatrax Block Signal page for more ideas.

The best part of our hobby is the ability to make things as simple or complex as you would like based on your skills. For my setup a simple push button and using my finger to throw the switch was sufficient, and requires operators to engage "beyond the throttle and fascia".

Stay tuned in October for the last few posts of my signal install series. In these upcoming posts we will dive more into Advanced Interlocking using TS2 circuits on a passing siding, and then wrap up with a discussion on how a train would operate in DTC/ABS territory.