Layout 6th anniversary - what's next

About this time in 2014 I started work on this layout and it has been slowly progressing around the train room and at this point is approaching the door to the layout room. This layout has been built one section at a time with a return loop of some sort being moved along on the leading edge to make running possible. 

So what's the next expansion ?

The photo below comes from RailPictures.net and was taken by John West in 2009.  This is on the west side of the Palisade tunnels and is one of the most photographed spots in my modeled area.  This scene is the inspiration for the next expansion of the layout in about a 4-1/2 foot space.  After entering the tunnels the tracks will cross the lift bridge across the doorway.

It was photos like the one above that got me interested in modeling this particular line and I built models of these two bridges several years before starting the layout.  Below is the photo I took of them in 2010.  They have been in storage ever since waiting for the layout to progress to this point.

I also have the tunnels portals already built.  I mentioned those in this post back in June.   So this should hopefully move along quickly through the end of the year with some of the major items already built.

Sparks yard rebuild - completion

The rebuild of the staging yard is now finished.  This took about 7 weeks to complete which was a bit less than I had expected.  All 4 staging tracks in the main yard plus the siding on the return track are available for use and I have been running various types of trains through to verify everything is working correctly.

Back in this April post I explained how a section of the return track was used to activate a current sensing unit that would cause the Wye turnout to automatically align for the yard exit.  Because the new yard has a siding on the return track I was not able to do it the same way so an Azatrax IR sensor was placed between the end of the siding and the wye turnout to trigger the turnout to change.

Back in 2014 when I was building the yard I was able to do most of the original yard wiring before the yard was installed and tipped up on edge so access was easy and I kept everything nice and neat.   The wiring modifications this time had to be done with the yard in place but I really tried to keep it neat.  What did help was having the controls in the wall cabinet under the yard.  Shown in this photo are all of the turnout controls for the new setup.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

There are few more things I learned from the yard rebuild that I have not had a chance to post on so those will make good topics for future posts.

Peco turnout panic

Over the years I have used many Peco turnouts, both code 55 and code 80.  In most cases I have removed the spring that presses the points against the rails because the Tortoise motors I have used could not reliably push the point past the tension and the motor itself would keep the points against the rails.

In this project on the entry end of the yard I had used 5 of the MTB MP5 turnout motors on 4 new and 1 old Peco turnouts.  In most cases the MP5 motors can force the points past the spring tension so I did not bother to remove the spring.  The 5th turnout on the return track siding was of the old design and I did have to remove the spring as the linkage was going through very thick bench work in that location.

At the loop end of the yard I was using 3 new and 1 old Peco turnouts with Tortoise motors.  I removed the springs on all of these and everything was going well until I started to install the turnout linkages on the 3 new ones.  As I fiddled with getting the linkage into the hole on the moving tie, the tie came completely off of the points.

What I had not realized until then was that the design of the Peco turnouts had changed and the current ones rely on that spring to keep the moving tie connected to the points.  There is a wider gap between the moving tie and the head tie on the single track end.

My solution for this was to insert a .060 x .040 Evergreen styrene rod into the space between the moving tie and the head tie on the single track end of the turnout.   I used a black sharpie pen to blacken it but left it white on the bottom so it would stand out in this photo.  That tab that is covering half the strip in the middle helps to hold it into place.  I had to fully remove the turnout and do this on the work bench.

For the two turnouts that had not fallen apart I was able to slip a shorter section of styrene strip in from each side of the turnout and glue it into place with ACC being careful not to get any adhesive on the moving tie.  I was able to do this without removing the turnout.  I found it impossible to slide one longer section of strip past that tab in the middle so that is why I had to do it this way. 

Sparks Yard rebuild - general update # 2

The work on the rebuilding of the lower staging yard, also known as Sparks is entering it's second month. All of the track work has now been completed.  The turnout motors have been installed, wired and tested for correct connections to the frogs, and the control panel has been completed.

The control circuits need to be finished for that control panel to do much.  It was originally intended to reuse the Digitrax DS64 decoders but I discovered that the MP5 turnout motors draw too much current for them so I am needing to build control circuits to replace it.  A new control circuit has now been finished for the siding that is on the return track.  This will allow momentary push button switches to control the route selection.

Below is the schematic diagram of the circuit I am working on now.   This includes the diode matrix and Set / Reset logic circuits to latch relays that control the polarity of the voltage applied to the turnout motors.  This will also allow for single push button route selection of 4 tracks in the yard.

Updated control panel

As explained in the recent post Rebuilding of Sparks yard, a new control panel will be needed.   This is  the procedure I follow to make my control panels.

Below is a preliminary design drawn with Microsoft Visio.   Having a drawing available now would also be a good time to go over the operating scheme of this yard.  

The original momentary center off toggle switches that could route in either direction have been replaced with 6 red push button switches to select the route.  The green LED's show track selection or turnout position as they did on the old panel.  All traffic will enter through the first turnout in the closed position and pass through the yard track selected.  After going around the loop there is one more siding along the return track.  The siding turnouts are also controlled with the red push buttons. The control of that first switch is automatic using sensors just like it was before so will align itself when a train approaches to exit the yard.  The sensors can be over ridden by a pair of red push buttons.   The toggle switches will be used to control which tracks will be in use for the automatic sequencer I am planning to include using Infrared sensors.

The original control panel was made from a pattern which I kept.  This pattern was made from a scrap of hard board is seen in the photo below.  Using this ensures proper size and alignment of the mounting holes.  The new panel is made from this same pattern.

Once a design is finalized, a printout of the drawing is stuck to the acrylic sheet and taped around the edges.   After drilling, the printout is removed and the acrylic sheet is cleaned up and polished with a product that removes any small scratches.

A sheet of .030 white styrene sheet is cut to match the size of the acrylic sheet.  Using the acrylic sheet as a pattern holes are made in the styrene sheet to match the ones in the acrylic sheet. Then another copy of the drawing without the switches and LED's is used as the actual display.  Using the acrylic sheet again as a pattern two or three of the switch holes are cut out from the drawing using a hobby knife.  The drawing is then sandwiched between the acrylic and white sheets and switches are installed in these holes so that everything stays aligned and then all the other holes can be cut out.

Since this panel was made the same size as the original, it will fit right into the original housing.  Almost all of the control wiring can also be reused with a few more added.   The red and white bottle shown in this photo is the product I use to polish out any small scratches on the acrylic sheet.

Sparks Yard rebuild - general update # 1

This yard rebuild project started around September 1st.  My plan is to push on with this through the fall and will be posting regular general updates along with posts on specific items as needed.  This is the first general update.

On the entry end next to the helix all 5 of the turnouts and Tortoise motors were removed.  Enough of the track and road bed was removed so a smooth transition from old and new could be achieved.   3 new Peco turnouts were assembled into a yard ladder on the bench and then installed and integrated into 4 of the existing yard tracks.  The turnout in the upper left corner will create the return loop and still needs to be installed.

At the other end (the loop end) of the yard the 5th track was realigned to be a single siding off of the return track.  In this photo the remnants of the old road bed can be seen.  The remaining 4 tracks have been cut off at this end of the yard and this yard ladder will be worked on when the entry end is finished.

Modifying guardrails on Peco turnouts

Almost 30 years ago I attended an informal clinic during an Ntrak club meeting on modifying Peco turnouts by adding a .010 shim to the inside of each guard rail to prevent the inside wheel flanges from hitting the frog.   This method became something of a standard for the members in the group and it is something I have always done prior to installing Peco turnouts on my home layouts and Ntrak modules.   I don't add this shim to my code 55 turnouts on my Asia prototype modules as some of the equipment run on that layout has thicker flanges and the shim would make the guard rail too tight. 

This photo illustrates what happens when the space between the outer rail and guard rail is too large.  When allowed to slide inward the inner tab of the gauge can hit the frog.

 

 

 

 

These are the materials I use for this project.

Super glue, Black sharpie pen, Hobby knife with new blades, .010 styrene strips about .125 in width, several tooth picks or push pins.

 

 

The strips are cut to a length just a bit longer than the guard rails and one side is blackened with the sharpie pen.

 

 

 

 

The side that is not blackened gets a fine bead of the super glue along it's length and is placed into the space between the rail and the guard rail with the glue side facing the guard rail.  Tooth picks or push pins are pushed into place to hold the strip against the guard rail while the super glue sets.

 

 

Next the excess strip is carefully cut away with a hobby knife making it flush with the guard rail.  The rails are used as a guide.  Any excess of the strip that extends beyond the guard rail is also removed.  This is where a nice new blade in the hobby knife pays off.

 

 

The shim should match the height of the guard rail and the edge is colored with the black sharpie pen.  As seen in this photo the gauge passes through without the inner tab hitting the frog.
 

 

The rebuilding of Sparks Yard

In October of 2014 construction on this layout started this layout with a double staging yard.  The first part of the staging yard was for the Southern Pacific line extending west from Weso so it is referred to as Sparks.  For those who do not know the area, Sparks is just east of Reno and SP had a large yard there which UP still uses today.

A number if issues with this yard have come up after this long and I have also learned a few things with experience of running the layout that makes me want to rebuild of the Sparks yard.  I will list those issues and planed solutions below.

• These were my first Fast Tracks turnouts which I did with code 80 rail in a jig designed for code 55.  While the code 80 rail fit into the jig, the performance of these turnouts has never matched that of later turnouts done with code 55.  The plan will be to use code 80 Peco Electrofrog turnouts in the rebuild.


• The layout of the yard ladders was compromised to try to fit in a 5th track.  The new layout will still have 5 tracks but with the 5th one being as a siding off of the return track.


•  The controls were designed to allow for train movement in both directions and this added complication to the control panel and wiring.  After running the layout for 6 years and always running the trains in and out in one direction I now realize that this is not necessary.

• A railroad herald made of Masonite that had been glued to a cabinet door above the yard fell damaging 2 control switches and cracking the acrylic of the control panel.  As the yard layout and control scheme will be different, a new control panel will be built using the existing housing.

And so it has begun as seen in the photo above.   This is the entry into the yard from the helix.  Five original turnouts have been removed and the sidings will be cut back to make way for the new track and turnouts.  Once this end of the yard is done then work will begin on the other end.  This will not be a quick project and I expect it may take a couple months as least.   The layout can still be operated using the other staging yard.  Updates will be coming in future posts.

Freelanced steel viaduct - Part 2

This is the conclusion of a two part post on the building and installation of an over 300 foot long steel viaduct made from Micro Engineering bridge parts.  These were some the things I added to complete the steel viaduct and the surrounding area.

The code 40 rail that comes with the section of Micro Engineering flex track was used to make guard rails over the viaduct.  These were glued into place with ACC (super glue) being aligned by the small bumps that are on the ties for this purpose.  The guard rails were held in place with clamps and pins until the ACC set.

The track was hand painted with Testors rail brown acrylic paint.  The section of standard track between the viaduct and the skewed through truss bridge got ballasted with Arizona Rock and Minerals ballast.

The bridge and concrete piers got some weathering from a combination of washes and weathering powders.  I added some scribble from a dry transfer set to the bridge above one of the piers and am considering some graffiti in a few other areas but will need to find some very small graffiti decals.

Even desert areas like central Nevada have brush and shrubs.  I use a combination of Woodland Scenics clump foliage and Scenic Express prairie grass tufts attached with a dot of E6000 adhesive on the end of a bamboo skewer.

Adding all those shrubs and prairie grass tufts may seem like a tedious task but it's actually quite enjoyable while running a train around the layout and listening to a ball game or music on the radio.

An area like this on a layout lends itself to many possible mini scenes.  Fishermen, boaters, hobos, bridge painters, and more are all things that would work here.  For now I have my canoes and some hikers admiring the bridge.