Have been really making some great progress on the layout these last few weeks and it feels great. I last updated that I had got my DCC system up and running and after a little tweaking it is working flawlessly. I power up the system, turn the layout power on, open WiThrottle on my phone, acquire a loco and away I go! And on that note…
I’ve completed the Junction area as well as nearly all the trackage in the first section of the layout. Bus wires and feeders are in place and trains are running! There are a few trouble areas that I am working on- the biggest being the sharp curve leading from the Junction on to the branch. Not sure how I’m going to solve this but I’ll work on the major issues when I get closer to them. I can see my steam engines having a hard time negotiating that tight turnout. In the meantime, here’s more…
I created the temporary bridge from some plywood with an old 2×2 screwed to the bottom for rigidity. The bridge is easily removable with two wood screws. Feeder wires are screwed into a terminal block for easy removal. Right now track is laid semi-permanently on top of the bridge for operational purposes. Once I have the trestle model complete, I will “cut out” the old bridge and replace it with the model. Since that is far off, the temporary bridge is solid.
The drop down area is where the creek bed will be located. The trestle will be built to scale, an exact representation of the prototype as it stood in the 1940s.
In this wide view you can make out the approximate location of the long coal trestle which will branch off from the main right after the junction. I really like how the re-worked grades turned out for the junction area. Originally I had the mainline up very high and it presented some real challenges down grade. My friend Matt helped to re-work the Junction completely. We spent a few hours looking at photos and studying maps to come up with the existing layout, which more realistically follows the prototype, where the Branch drops off quickly from the Metropolitan Branch mainline and is sunken between sidings. (E.C. Keys and the coal trestle) So far, everything is working smoothly. It feels great to make real progress. It feels even better to be able to run a locomotive on the layout! 🙂
Next up I’m going to continue track laying into Chevy Chase and on into Bethesda. If I stay on track, I should make my goal of completing all of the upper-deck track work before Christmas. 🙂
The prototype DCC system is up and running. I decided to home brew my DCC when I read about DCC++ and realized I had an Arduino laying around with no real purpose. I bought a motor shield and hooked up my laptop and an old power pack to test it out. It worked but I knew I had to come up with a more complete and permanent setup.
I immediately considered the Raspberry Pi (RPi) as it’s a low cost, full featured Linux computer and I can run JMRI on it! I needed a power supply and a bit of research found others doing similar things using various inexpensive devices. I also wanted a proper booster so I chose a Tam Valley unit. I’ll invest in a second one for my other power district in the future.
Today I spent several hours putting all the pieces together that I had collected over the last couple years. The monitor was a donor from my dad. The mouse, keyboard and cabling was all old stuff laying around. I put everything onto a board, first laying it out and planning the cable routing. Once everything was good, I screwed the pieces into place.
Next was to test voltages and see what worked. A bit of tinkering and everything looked good. I set it all in place and started configuring things in the RPi. A bit of trial and error getting things to talk to each other, with some luck, and it’s working!
There are still lots of kinks to work out and I need to experiment with a lot of the features. My intention is for this to be a fun project and provide a robust DCC system to get me started for the Georgetown Branch. We will see how it works in the long run.
incidentally, I had planned on taking apart my Proto2000 GP7 to have a look at the plastic gears, as last time I ran it it was making lots of noise.
Wouldn’t you know it, all four gears were cracked! I replaced them with Athearn units, like a charm. Here’s one of the cracked units:
I was asked to give some more details about parts and prices. I’ve created a spreadsheet and pasted the data here to give you a rough idea. Building this setup requires many things that you probably already have on hand, so the cost will vary. Also, you can find things on sale occasionally and you can simplify or streamline it with your own skills or modifications. I included rough estimates for a few things which you will need just to get the ball rolling. Feel free to reach out with any questions you have!
Even though it’s a short stretch of track and is purely cosmetic on my layout, it feels great to get it done. The track is some Micro Engineering weathered code 100 flex track that I received in a lot of very old track. It’s probably over 20-some years old, if not older. As such, it required me to drill all of the spike holes, which I did about every 4-5″ with a Dremel. Soldered the joints and pre-bent the curves. This stuff is very stiff and tough to bend smoothly! All in all, it turned out nicely. It will be a great spot to stage a mainline passenger train.
Next is to work on bus wiring, roadbed at the Junction and getting more track down.
I didn’t realize just how frequently Google Maps images are updated, but this is impressive to me. Here are a few images I snagged today which show the Georgetown Branch right of way as it stands very recently, earlier this Summer. You can see all of the clearing that has happened along the RoW very well. Very impressive. I really wish I could walk the line one last time before they do permanent grading, just to see what the RoW was like when the GB was new. Oh well! 🙁
Construction thunders on in Bethesda on the Purple Line project and as they make way for the station in Bethesda, the old right of way for the Georgetown Branch is unearthed for probably the last time. The buildings above the right of way were demolished, and now grading is complete. They’ve dug down a bit further than the original right of way, but it’s as good as it will get. Take a look at the photo below. You can just make out the concrete bridge carrying Wisconsin Ave over the old RoW at the bottom of the photo. The large angled pilings in the bottom right cover the RoW and it curves over toward those red awnings in the distance. Can you see it?!
I re-worked my drawing of the Bethesda Freight Station, I’m calling this v.2. I was looking at the first attempt, in laser-cut form, on the layout, and noticed that the loading dock was extremely high. I pulled an HO scale delivery truck up to the dock and it came up about 1/4 of the way up the back door of the truck. Unacceptable.
I went back to my archive photos and the drawings. I reassessed how I got my original measurements and made new references off of the photos, trusting more in some known dimensions I had, namely the garage doors and windows. I also used some logic to determine door size as well as the height of the loading dock. I assumed the loading dock height to be about 42″. I assume the door is about 7′ high. After re-drawing the plans, here is what I’ve come up with:
I’m MUCH more pleased with this result. I know it’s not perfect, but I think it will be about 95% close to correct. I’m going to print this one out, mock it up and see how it looks on the layout. More to come, soon!
Some great news about the doomed Talbot Avenue Bridge, although I’m not sure which specific parts will be saved. My guess is it will be the span itself, and perhaps it will be placed in a park on new footings, as the original supports were completely rusted away in some places and in really bad shape. Hurrah!
So it’s been a very long time since I did a layout update and a LOT has happened. A year or two ago I reached a point where I really got stuck. When I designed the layout, a lot was left out and as a result I’m having to tackle issues that I hadn’t planned on. You may say that this is a normal aspect of building a layout, and I agree. However, being that I am new at building this type of layout, I really got stuck and discouraged. Between the Summer of 2016 and 2017 I barely set foot in the basement. I spent maybe 2 or 3 days of work over the entire time span. Why? I couldn’t figure out the track arrangement between Georgetown Junction and Chevy Chase. I had mistakenly ignored elevation and as such the design was asking for the track to go down hill about 6″ in about 10 feet. The grade was ridiculous and I tried many methods or alleviating it. None worked.
During that time, I made friends with the son of a late member of my model RR club. He and I had met before, but never really spent time talking trains or what projects we were working on. Turns out, he’s building a tremendous layout in his basement that is an absolute gem. (I hope to profile it some day!) He and I have been working on each other’s layouts over the last several months and I couldn’t be more happy on what progress is being made. More progress has been made in the last few months than in the last few YEARS! It’s really fantastic. He helped me figure out the grade issue, taught me about good wiring techniques, really seeking the soul of the prototype to dictate how the track plan is refined and implemented, good practices, the magic of plywood sub roadbed (I was planning on using splines) and how to make track mockups out of cardboard. All of this (and so much more) has put me on a fast track to getting a LOT done. I’m going to share some photos here, and plan on doing more in the near future. I am considering doing a vlog, but that remains to be seen, if I can find the time.
I told you fun stuff was happening! So I had a chance to test out my drawings and laser cut the station out of mat board as a proof of concept. Wow! I am so pleased. The drawings proved to work perfectly well. Have a look:
Next steps: I need to finish the drawings. I am now applying textures (brick, concrete) to the file so that when I do my actual laser cutting/engraving all of the bricks are represented as well as the concrete foundation. I even sourced images of brick which match the pattern of 5 and 1 for the soldier courses. I also sourced some .020″ laserboard which I will use to create the custom windows and garage doors. I didn’t realize that the top three courses on the garage doors were filled in with glass panels!
Progress is being made on my HO Scale model of the B&O’s Bethesda, MD freight house. This unusual structure consisted of a rectangular building build of concrete & brick with a loading dock and two garage doors. The oddest thing about the structure is the fact that it was never connected to (nor aligned with) any railroad tracks! I believe it was never intended to handle much more than administrative capacities and smaller LCL freight items, perhaps. More details on the build soon!