August 2023: Progress Update: Rock Creek Trestle & More

Model RR, News

So are you sick of me posting “updates” on the Rock Creek trestle yet? Yeah, me too! 🙂 Anyway, onward. Made a bit of progress on the Rock Creek trestle scene. First up, some terraforming. That requires gluing all the foam I cut in an earlier work session. After some research, I settled on this stuff:

Gorilla Heavy Duty Construction Adhesive

Worked a treat for gluing all the foam together.

Weighing the foam down while the glue dries

Next up came the actual carving with foam cutting tools, knives and a rasp. I wore a respirator mask, had a fan on, and a powerful extraction fan running while working with the foam cutting tools. The fumes are nasty!

The wand had a hard time “cutting” through the adhesive.

After all was done, things are starting to come together

All of this will be covered with a layer of Sculptamold.

This is a very, very messy process.

I also started on the final to-do’s on the trestle itself. I scribed lines in the sides of the stringers simulating the beams. I now will install NBW’s at each joint and above each bent. I need to put the stringers on the top of the trestle as well as build the little escape platforms. That will be last, as they stand proud of the top. After that, a little weathering and it will be time to install the trestle. Here’s a few more shots:

Scribed “joint”, darkened with ink wash and panel liner.
NBW’s installed. Looking good!

Other than this, not a lot going on last couple months. Saw my son off to college this week and work is busy! I picked up several new freight cars and have been doing research and planning on getting my fleet more rounded out – I realized this week that I am severely deficient in decent B&O 2-bay hopper cars.

I scored a copy of the wonderful Merchant’s Despatch book by Roger Hinman from Signature Press. I’ve had my eye on this for years and the price via the usual used book joints always dissuaded me. A random search turned up new copies for sale at Arizona Hobbies for $35! This is an excellent price and if you’re looking for this book, jump on it! I read the whole book when it arrived and enjoyed it tremendously.

Probably the biggest thing was I FINALLY was able to purchase the needed DCC Concepts Cobalt IP Digital turnout motors – these babies have been like hen’s teeth for the last several months due to manufacturer shortages. Iron Planet Hobbies stocked a few 12-pack cases and I picked up a couple, so now I am all set for turnout motors! (Side note, as of this writing Iron Planet Hobbies is again out of stock for the 12 and 6 packs. They have 17 single units in stock. They have had the BEST prices of any place I have found, so I highly recommend!) Need to figure out what I’m going to do for track in Georgetown (to hand-lay, or not to hand-lay!) but that’s a discussion for another day.

Oh, and one more thing. Here’s a sneak peek at something Kelly is cooking up:

Talbot Avenue bridge, anyone?

Talbot Avenue Bridge Preservation and Park

Georgetown Branch related links, History, News, Prototype

One of the great things from all of the Purple Line destruction/construction is the preservation of the historic Talbot Ave bridge that once spanned the Metropolitan Branch at Georgetown Junction. As you may recall, back in 2019 the bridge was removed in preparation for the installation of the additional two tracks and a new overpass. The County planned to save the bridge for a future installation in a park, and we finally have some renderings of what it may look like.

Lyttonsville Park rendering with the Talbot Ave bridge feature

At the Lyttonsville Park community meeting, a slide presentation outlined the current designs and status. Link to the slide presentation: https://montgomeryparks.org/wp-content/uploads/2020/11/Lyttonsville-community-3-2023-0330-web-r.pdf

In the presentation are several really neat photos of the current state of the bridge. The girders, one of the only parts of the original 1916 construction, are preserved, sitting atop the pedestrian bridge sections that once topped the Rock Creek trestle. Not sure of the current location; probably in a Purple Line storage yard.

A hundred years of weather, deferred maintenance and punishment has not been kind to the old steel, and it shows. I’m so grateful it will be refurbished and preserved; a small piece of railroad history that will continue to be enjoyed for generations to come. I’ll take it. Plus, I can actually go and get more measurements if I need them! 🙂

Where Trains Once Ran; A Georgetown Branch Documentary

Georgetown Branch related links, History, News, Prototype

Well, this was a special project that I can finally share with everyone. A few months back I was contacted by a Georgetown University graduate student who was putting together a brief documentary on the Georgetown Branch; specifically its history and transformation into a rail trail. We initially shared stories and historic reference material and eventually I was interviewed on-camera at home. I think the project turned out brilliantly and my hats off to Evan, the director, producer, writer – well, everything! He did an awesome job capturing the entire story of the Branch. I hope you enjoy!

Where Trains Once Ran

Georgetown Branch Track Chart and Turnout List

Model RR

I spent a bit of time mocking up the layout track plan in Google Sheets and coupled that with my turnout list. This will be used as part of my wiring package to keep handy for troubleshooting and planning. Having the line drawing of the layout will also come in handy for operations planning and as I work toward my NMRA AP Dispatcher cert, I will build off of this diagram. Here’s a PNG (below) and a link to the original, on Google Sheets.

Layout Progress Update: June 19

Model RR

I spent a few hours working on the area around Rock Creek today and figured I’d throw an update on the blog. When my cousin Eric visited a few weeks back, he helped me get started on cutting and fitting Styrofoam to fit the area and flesh out the basic land forms.

Cousin Eric helping to cut and install Styrofoam as basic land forms.

Today I moved the project forward. First I spent a bit of time planning out the area near Chevy Chase. I decided that I could include the bridge next to T.W. Perry so I added a base for the feature. Here’s a couple prototype photos. It was hard to get a wide shot because there was a fence just behind me.

2015 view of the bridge next to T.W. Perry
2015 view of the bridge next to T.W. Perry

Oh, and sorry to say, this bridge was completely demolished in 2019 when the Purple Line construction passed through the area. 🙁 Anyway, here’s where it will fit on my layout:

The bridge across nothing.

Because the trestle is adjacent to the T.W. Perry scene, I had to work out both areas at the same time. So here’s some shots of how it all turned out:

Hope everyone is doing well and tackling their own model RR projects!

Layout Progress Update: May 2023

Model RR, News

A quick update to share a few snapshots of some progress and talk about what has been going on since the Winter. Well, first up, between December and January I took on a massive project; replacing the transmission in my 2006 Honda Odyssey. The task was no small feat and I did nearly all of the work myself. As a result, I have a functioning car again, and have likely permanently damaged an already questionable right shoulder. (A recent MRI revealed the reality that surgery is likely in my future.)

Out with the old, in with the old. I purchased a replacement JDM (Japanese Domestic Market) transmission on eBay from a local vendor. The job took me a couple weeks of evenings/weekends to complete and was an absolute bear.

But I digress. I showed you the Rock Creek trestle mocked up in place. Now let’s take a look at how I got there. I made the decision that building the trestle would be my priority. First up was to start mocking up the terrain to be sure it would work with the existing design. So I used some masking tape to outline the land forms.

Red highlights indicate where the benchwork interferes with gentle slope on each side of the approaches to the trestle.

What became apparent was that the angle required for the long fill the trestle approaches sat on would not work with the existing benchwork. I also had the idea that it would be nice to be able to remove the trestle should I want to transport/save it from the layout room in the future. This required completely rebuilding this section of the layout, by essentially widening this dropdown area.

After removing some benchwork on the right and left side, widening the gap for the new dropdown section. Thankfully there was enough slack in the wiring to simply slide the new pieces in.

I then needed to install the trestle and shim it to sit flush and level with the track, so I could measure the height of each riser.

Bridge is in the new, wider dropdown benchwork and shimmed to be flush up against the level which is gently clamped to the railhead.

I measured the height from the base to the lowest pile in each bent. I subtracted about 1/16″ and fashioned risers from 1×4’s and other boards.

Risers, laid out in order.

I installed the risers so the bent sits just on the edge. I will shim up to the height of each pile, since they are uneven. Risers were glued in place with wood glue.

Risers installed, bridge in place. Need to shim up to each piling.
The risers all installed. Note the new, wider dropdown for the bridge. This allows for the approaches to be nicely contoured similar to the prototype.

Now that the risers are in place, I can begin building the landforms, including the creek itself. I’ve still got a bit of work to be done on the bridge; namely the stringers on the top deck and some other details, but otherwise I’m nearly done. The same day I worked on the new benchwork, Kelly came over and helped me figure out and install the new benchwork as well as some foam at Chevy Chase and at Georgetown Jct. Progress!

Making sure the edge is flush. This is Chevy Chase. That area will have the golf course, part of the swimming pool and some other terrain.

A few other command system and lighting improvements: I deaccessioned myself from the old Digitrax Empire Builder II system and picked up a new TCS CS-105 unit.

After a weekend of setup, it is functioning beautifully.

With the addition of my trusty RasPi/JMRI, the ProtoThrottle is working well, too.

I also installed LED strip lights beneath the upper deck on half of the layout.

This is very much a work in progress as I attempt to best engineer how to get the most out of them, but I am really pleased with the initial setup. More to come on this later.

This is with the room lights off.

I’ve also been giving some thought to completing my model of the Bethesda Freight House. If you recall, a few years back I designed and laser-cut parts for my model of the station, but hadn’t assembled it. I spoke with Greg C. who is a master at building structures, about how to proceed and he gave me some great tips. I need to figure out the inserts for some of the moulding around various windows and engineer how I will install the garage doors, and get building.

Well, that’s all for now. Life is quite busy at the moment; my kids are wrapping up the school year, lots of sports activities, road trips, and other commitments. I’m taking a week off to host my cousin and we are planning on hitting several regional railfan spots, hobby shops and working on my layout. Hopefully more progress reports soon!

Scale Wheel Stops Video Short

Model RR

Recently friend of the blog, Greg Cassidy, did a YouTube Short on Kelly’s magnificent 3D printed HO scale wheel stops based on the prototype. Have a watch:

https://youtube.com/shorts/hurWsa3R4_Y?feature=share

A few years ago I was lamenting to Kelly how there were no good HO scale wheel stops on the market. Nearly all of them look chunky and oversized. (because they are.) We visited a stretch of abandoned Georgetown Branch right of way in Bethesda where a siding still exists that includes original wheel stops. Kelly was inspired to draw up a model in Fusion360 and printed a few test items before developing a final design. Here are a couple in place on his layout:

They are simply the finest wheel stops on the market, full stop. (pun intended.) They are 3D printed in resin, are quite durable, easy to install and if they break, you can simply glue another one on. Kelly sells them over on his site, FineScale360. Get a few for your own layout!

1959 B&O Crossing the Cabin John Trolley Line

History, News, Prototype

I found this print on eBay recently and am quite pleased to add it to the Georgetown Branch collection. The caption on the back of the 8×10 print reads: “1/59 Washington, DC – Line #20 – B&O RR trestle – crossing over Cabin John line.” The photo was taken from the west side of the trestle, facing to the east.

Jan 1959 – B&O trestle crossing Cabin John trolley line. Photographer unknown. Personal collection.
Approximate location of the photographer, facing East. Historic Aerials.

At the time, the Dalecarlia Reservoir was undergoing a massive expansion project. Aerial photos from 1949 and 1957 show the scale of the expansion.

1949. Historic Aerials.
1957. Historic Aerials.

The last trolley on the Cabin John Line was on Jan 3, 1960, and the entire system was fully closed in 1962. Congress revoked its charter in 1956, so likely seeing the writing on the wall, the Dalecarlia reservoir began expansion in the mid 1950s. The right of way was repurposed and is where some major buildings and two of the settling ponds exist today.

The old Cabin John trolley line is outlined in light green on this map. You can see how much has been built on the old right of way.

A link to my Georgetown Branch Google Map

Hope you enjoy this brief view of the bridges over the trolley line. If only there was a train passing by! 🙂

Upcoming Project: TCS CS-105 and LED Lighting for the Lower Level

Model RR, News

I took the plunge and decided to rid myself of my twenty-some year old hand-me-down Digitrax Empire Builder II starter set for something a bit more cutting edge. I really like what TCS is doing these days with their new systems and was able to finally see one in action at Springfield last winter. A new CS-105 is on hand and will be installed soon.

I also picked up a handful of LED light strips and a power supply. These will be used to illuminate the lower deck. Hope to do a full write up on this once installed. Need so cut some 1/8″ strips to mount the lights to.

Remotoring a Proto 2000 GP7/GP9 With a Kato Drive

Model RR, News

My friend, Tom Matty, who models the Thomas Sub of the Western Maryland Ry, a very skilled and talented modeler, offered to do a writeup of how he re-motors an old Proto2000 GP7/GP9 with a much higher quality Kato drive. It involves milling the frame, fitting the motor, linkages and worm gears and then installing your favorite flavor of DCC/sound. (we won’t cover the DCC installation here today). Tom gave me permission to post his process on the blog so I figured I’d share it with everyone who may be interested in this fantastic upgrade.

Parts needed:

How-To Guide

Download the PDF here:

https://www.dropbox.com/s/dg7dcwgmj3447rk/Remotoring%20a%20Proto2000%20GP7-GP9%20-%20Tom%20Matty.pdf?dl=0