Freight Trains in the Sky

One of the bigger changes in model railroading since the 1970’s is whether we’re modeling a completely imaginary railroad, a plausible but invented railroad, or if we’re trying to model the real world as it was at a particular time. The “imagine everything” folks might build something that’s a caricature - think John Allen’s mountain-crossing Gorre and Daphetid — or that borrows some historic reality (“bridge route in Colorado”) Owners get all the freedom to choose what they’re building out of whole cloth, create cities along the railroad from any inspiration, and avoid all the pesky research and visits to actual sites. Folks building to a plausible reality might need to understand something about the economics, architecture, and industries of a specific place and time - modeling an agricultural short line in California, or a fictitious logging railroad in Washington state. However, they’ve also got the freedom to imagine new places using whatever constraints they choose. I’m on the other side - I choose to model actual locations, and try to accurately model what’s there. I enjoy the research, I think I get a more realistic whole, and I suspect that the research helps me fill in details I couldn’t imagine on my own.

Or, more bluntly, the real world is stranger than I might imagine, so modeling a real place from photos helps me fill in those details I couldn’t possibly invent.

How strange is the real world? How about “freight trains in the sky” strange?

Report on Steam Railroads of San Jose

I was poking around in San Jose Library’s California Room, the library’s local history collection. One item caught my attention: “Report on Steam Railroads of San Jose”. This report from 1925 described the current state of the different railroads in San Jose at the time, and suggested ways to improve both the profits of the railroads while improving quality of life for San Jose residents and businesses. Considering the author was a well-known urban planner from St. Louis (Harold Bartholomew, who apparently had an entire urban planning firm specializing in railroad rethinks), I think we can imagine we’re about to hear a bunch of crazy ideas from those Back East crazy consultants. And it doesn’t disappoint, with a crazy proposal that I couldn’t have imagined.

[ Partial version of Report on Steam Railroads of San Jose here. I didn’t bother to scan the fold-out profiles for railroad elevation for the three plans. Sorry! ]

The problems of San Jose in regard to its steam railroads are similar in every respect to those in other Cities of normal and rapid growth, where the expansion of industries, commercial enterprises, and residential sections has taken place with little or no regulation. Instead of well defined and segregated industrial districts, we find in San Jose clusters of factories, warehouses, coal and lumber yards and a great number of packing establishments located close up to the railroad tracks, often main lines, as they have always existed. The industries have closed in on the railroads, so to speak, thus hindering greatly both their own expansion and that of the railroads.”

As a reminder, San Jose in 1925 was different from the railroads we know today. In the 1920’s, the College Park yard straddling the Guadalupe river was the main SP yard. The “big old barn” of an Eastlake-style wooden station on Bassett Street was San Jose’s primary railroad station. The line to Los Angeles ran down the center of Fourth Street, past office buildings and San Jose State University. The old South Pacific Coast line broke off the SP mainline at the old Lentzen Street roundhouse, past the current Shark Tank and future site of Diridon Station, and then off towards Campbell and Los Gatos. Santa Clara’s Newhall Yard hadn’t yet been built. The old freight yards were congested, lots of downtown streets got blocked by trains around the clock, and the residents complained about the 19th century feel of the railroad facilities in town. Main roads crossed the railroad at ground level, so busy streets such as First Street, Polhemus (Taylor), San Pedro Street, and the Alameda were constantly blocked by trains coming and going.

What’s Wrong with the San Jose Railroads?

It was a very different San Jose than we know. The report highlighted many of the challenges: the passenger station and yards were overwhelmed, the freight station wasn’t modern, and the city wanted the SP off Fourth Street.

There were 100 passenger trains running through San Jose each day. 70 of the trains were the commute operations - nearly as busy as today. Most of those passenger operations went to the San Jose Market Street station - a two track station that was too tiny for the service, stuck in the middle of the city, and ill-equipped to turn commute trains and send steam engines to and from the roundhouse. There were also five trains to and from Oakland and Niles, six trains to and from Los Angeles and points east, and six trains to and from Monterey and the Salinas Valley. None of these were trains to Santa Cruz - the Santa Cruz trains all stopped at the former SPC station off the Alameda.

The yards and services were still based on 1870’s San Jose. Freight switching of College Park blocked Polhemus (Taylor) Street; San Pedro Street had six to twelve tracks to cross. The consultants were particularly dismissive of the old Southern Pacific freight depot on San Pedro Street. The freight station was a fine building, 600 feet long with two tracks holding 44 freight cars each (assuming temporary bridges could be placed between adjacent cars.) However, the freight station predated automobiles. There were no loading docks for trucks on the property, the station was reached by a narrow driveway, and the only exit along San Pedro Street required crossing eight active yard tracks.

“THE FOURTH STREET PROBLEM That a problem exists as to the proper disposition of the Southern Pacific track in Fourth Street, is granted by all, including the railroad itself which some twenty years ago anticipated the situation and purchased the necessary right of way for relocating its track to by-pass the city to the South. The detour was never built, however, and in the interim the city developed a rapid suburban growth to the South and west so that the proposed route is now fairly well surrounded by residential and potential residential areas and is intersected by some 20 improved streets. Naturally, a well established community such as this resents the intrusion of the railroad into its midst. On the other hand that part of the public along and in the vicinity of Fourth Street, and those utilizing its own streets have endured the presence of the railroad for about 50 years and now feel the need of relief. It is also the sentiment that the natural expansion of the business district eastward is hampered boy the operation of trains on Fourth Street.
The railroad without a doubt would prefer to remain in Fourth Street, operating at grade for the rest of its life, as the sight loss in time due to speed reduction through the city is inconsequential and any change it may make to materially better the situation will probably cost from one to five million dollars.”

The great thing about the report is that the consultants went into detail about how the Southern Pacific and Western Pacific ran their railroads. They noted a ton of operating details about the SP.

San Jose yard assembled trains going to San Francisco, Oakland, Niles, Tracy, Watsonville Junction, Redwood City, and Santa Cruz.

30 switch engines and crews were needed for yard and industrial switching during the fall season.

30-40 freight trains a day, and 1600-1800 cars per day came through San Jose. “This is not an extraordinary great volume for the facilities at hand but the great diversity of classifications necessitates quick handling.”

SP had four team tracks just west of North First Street and north of passenger depot, and two additional tracks west of San Pedro Street that had a loading platform and Gantry crane.

For Market Street station, the two tracks under the train shed and one track north of the train shed were used for loading and unloading passengers. Five tracks north of the station were used for storing passenger equipment.

WP cars were only interchanged on the south side of town near Fourth Street and Alma. This was also a point of contention in the report, and the authors stressed that better and faster ways of interchange were needed.

The consultants were also detailed, explaining exactly how cars for the Santa Cruz branch were handled. They stated that Santa Cruz branch trains were assembled in “a small yard in Senter Street prolonged” (aka the current main line between Lenten Ave and Diridon Station). Train crews didn’t have to do any additional re-blocking or organizing there; instead, trains could sort cars at “several tracks on the Santa Cruz division in the vicinity of San Carlos Street (called the South Yard)” This is some great detail that I’m not sure how I’d get any other way. From the point of view of my Vasona Branch model railroad, it would be quite accurate for crews to sort and shuffle cars near Plant 51 either for local work or in preparation for later work further down the line. Best of all, I now know to refer to this stretch of tracks as “South Yard” - a little detail that otherwise might never have been recorded.

So What Should We Do About It?

The Eastern Consultants made four proposals, two that made sense and one that was batshit crazy to my modern eyes.

A: Bypass around San Jose to the west.

B: Elevated tracks along Fourth Street

C: Reuse the Western Pacific right of way around San Jose.

D: Pass around the city to the east/north, and parallel the WP on the east side of town.

The consultants thought the bypass around the west side of San Jose was a non-starter. Although the SP had owned the land for twenty years, suburbia now surrounded the right of way, and the neighbors were unlikely to want trains coming through their nice neighborhood. (Two years later, the Willow Glen neighborhood incorporated as a city, primarily to block the Southern Pacific from coming through. They merged back into San Jose once the SP bypass was built to their east, avoiding the neighborhood.) The consultants also noted it was going to be pricey to raise the tracks around the Alameda and through Willow Glen, build bridges at the Alameda and San Carlos, and fight the neighbors. “It is therefore recommended that this plan be definitively abandoned.”

Plan B was their favorite - they assumed that the then-current mainline north of downtown and down Fourth Street could be raised 15 feet in the air, and the city streets in the vicinity could be dropped four feet. More importantly, they only suggest raising the through tracks to Los Angeles - the station would remain at ground level (though it would be “replaced by an efficient and modern station”), and San Francisco commute trains would continue to stop at ground level. This plan seems to assume the College Park yard must be decommissioned, for there would be no way for a train leaving the yard to reach the ramp to the elevated structure. They still note that “freight and passenger terminal reconstruction will be quite expensive as will also the elevated line of open type design” - an interesting admission when they discounted the bypass around Willow Glen because of the cost of routing and elevating the tracks there.

To my eye, they’re being awfully optimistic about the plan:

“The principal advantages of plan B are as follows: (1) Property values along Fourth Street will not be depressed but should be favorably affected.” Honestly, I can’t imagine freight trains rolling by at second floor level would be pleasant, either for noise, shaking, or strange stuff dropping from the train. They also admit that “certain industries particularly in the vicinity of North First Street including in the Wye… will be unfavorably affected.” I think they’re primarily talking about the Golden Gate Packing Co on Fourth Street here - apparently, its sidings couldn’t be connected after all the work to raise the line.


The third option, Plan C, was to bypass San Jose to the west like Plan A, but avoid the challenges of forcing a new route through the Willow Glen suburbs. Bartholomew proposed having the SP move the main line to the former South Pacific line, build a new station at today’s Diridon Station, and build the necessary overpasses and underpasses along the way. When the tracks passed by the Western Pacific crossing, though, the mainline would follow the WP line through the Willow Glen neighborhood and onto open country. The consultants suggested that a jointly operated double track line could be created, or the SP could just parallel the WP immediately to the south. They claimed this approach would remove all the tracks on Fourth Street, “no important industries would be affected”, “no additional interlocking plants would be required with the WP.”, and a joint line would allow for a more convenient place for the railroads to exchange cars. They also admit that moving the SP’s passenger depot away from downtown is a drawback, “passengers will be carried through an industrial area largely and will not get a satisfactory impression of the city as a whole”, and requires acquiring a different set of land through Willow Glen.

Paralleling the WP might not be as easy. From modern eyes, the WP’s line through Willow Glen seems to weave its own way through suburbia on a narrow right of way. I’d imagine the neighbors would have complained just as loudly as they had to the SP’s bypass proposal. The consultants proposed a joint line with the WP, or at least a parallel line, and do note that these would be much more unsafe than the existing situation if the line continued to have street level grade crossings - drivers and pedestrians were too likely to start moving when one train passed, not realizing another was coming on the parallel track.

Plan D appeared to be a bonus proposal, provided mostly as an afterthought. Although they noted the SP could go around the east side of San Jose, they noted that the railroad would need to push a right-of-way through many blocks of existing neighborhoods, increasing the cost and the outcry.

How’d the Consultants Do?

All joking aside, I really love this document. Not only does it propose an alternate San Jose that I would never have imagined myself, but it also provides so many details that are helpful for my model railroad based on the real railroads they examined. I appreciate their fact gathering about the activity in San Jose: the number of trains and cars switched, the work done at the freight house and passenger depot, the switching practices, and the informal names for pieces of track. I can’t imagine anywhere else I might have learned that the tracks near the Del Monte cannery were referred to as the “South Yard”.

I love the document, but that doesn’t mean I love that alternate San Jose they propose. I don’t know how serious this plan was, but the elevated tracks through flat San Jose doesn’t match my image of California - elevated structures like this definitely sound like something we’d find “back east”, not here. However, the fact that someone proposed this definitely highlights that this could have happened, and I could imagine someone building an interesting “what-if” layout with freight trains flying by downtown San Jose at treetop level. If I were into modeling plausible railroads, it might be interesting to build a major mainline through downtown San Jose on an elevated structure. However, I suspect it would look awkward and out-of-place. If we’re building a plausible layout, that also means we want to avoid the stuff that might be accurate but that doesn’t match our viewers’ expectations much. Just because some fancy east coast consultants thought it’s possible doesn’t mean my next guest to see the model would think so.

I’m also not sure it would be a fun model railroad. The operational challenges - the long climb paralleling existing tracks, the new two level station at Market Street, the curve onto Fourth Street - make me wonder whether it would be good or bad as a model railroad - the elevated and ground level tracks seem like they’d remove some of the complexity and action we’d like in a model railroad.

The whole plan, though, highlights how strange the real world is, and how folks might have suggested plans for our hometown that might seem surprising or improbable to our eyes. Apparently, someone in City Hall or the Chamber of Commerce didn’t think it was so strange, and was willing to cut Mr. Bartholomew a large check to “think outside the box” and consider freight trains in the sky.

Bartholomew didn’t just try to rebuild San Jose’s railroads - urban planning was his business, and he did similar reports for many big cities from the 1920’s through the 1950’s. The archives of his company, Harland Bartholomew and Associates, are in Washington University’s library in St. Louis, and a listing of just some of their records show how broadly he consulted - the list shows Alameda, Oakland, San Francisco, Berkeley, and San Jose all having reports done, as well as many more cities across the U.S. If I had a couple days free in St. Louis, I’d likely stop by and check out Bartholomew’s other plans. I suspect I’ll find a bunch of “just put the freight trains on an elevated structure” ideas.

We’ve got a lot of choice when we’re building a model railroad - whether we’re building something imaginary, plausible, or historically accurate. I’ve always aimed to model real locations and times because I think I’ll create a more believable scene than I would have if I either had to imagine a place from whole cloth, or where I wasn’t doing research on what a real place was like. The Bartholomew report on San Jose shows highlights both how strange and unpredictable the real world might be, as well as the outlandish ideas that might have been seriously considered in the real world and might be reasonable choices for a plausible layout. Either way, searching through archives and building up knowledge can be a great boon for real or plausible layouts… even if it’ll tell us we ought to put freight trains in the sky.

Image generated by gemini.google.com, which refused to put a Daylight locomotive on the elevated structure regardless of how easy that would be.

Take the Electric Trains to the Broad Gauge Depot!

I had a visit this weekend from YouTuber Interurban Era, a Bay Area custom model and layout builder. I've been a big fan of Miles's work for years. His 1960's Mexico-themed "Alta California" railroad has modeled interesting locations with diesels I recognize from my teenage Athearn years. His Oakland-tinted street running scene on the former layout matched a lot of memories of wandering around Oakland's vintage neighborhoods. Interurban Era also inspired my Google bus project when he showed off one of the Iconic Replicas HO buses in AC Transit livery, and introduced me to the high-quality modern bus models. He's also done virtual model railroading, helping build a San Francisco-themed world in the city-building game "Cities Skyline" called "Presidio Bay". I'd been up to see his workshop and layout a couple months ago, and finally got to repay the favor by inviting him and his other half to visit and operate on the Vasona Branch.

Interurban Era got lucky last year; when Caltrain decided to give away an HO model of one of the Stadler KISS trainsets that are now running on the electrified San Jose - San Francisco line, Interrban era managed to score that rare model. If that model needed a place to run, it would certainly be the San Jose Market Street depot on that portable layout I did a few years back. I set up part of the layout in the garage just for this visit, and that's why we've got an electric trainset sitting under the trainshed at Market Street.

The Market Street station was the Southern Pacific's primary station up until 1935 when Diridon station opened. Market Street often got referred to as the "broad gauge station" because the other major station, West San Jose, was the former South Pacific Coast narrow gauge station. Even after the former SPC line from Alameda to Santa Cruz was widened to standard gauge, the stations still seemed to keep the "narrow gauge depot" and "broad gauge depot" identifiers.

As the trainset was already visiting, we also took it out on the Los Gatos branch, leading to this photo at the Campbell station. Here's hoping Caltrain gets encouraged to string catenary down to Campbell and Los Gatos!

I keep wondering whether the HO Stadler model was a one-off promotional model; Interurban Era mentioned that it's based on a Lilliput model, but the manufacturer did cut some new molds for parts of the Caltrain version of the car. Because Lilliput is one of the brands owned by Bachman, I think we've got a reasonable chance that HO models of these trainsets will show up in stores one of these years. If that happens, plan to take the electric trains to San Jose's broad gauge depot!

Movie Night XXX: Serious Switchman Skills

Playing the model railroad operations means trying to keep track of a ton of cars as you try to place each in the correct location. Real railroaders had the same problem - they'd need to know the cars in their train. Looking a couple cars down a string wasn't easy - for us modeleres, we might just need to glance a different way or perhaps pull out the reading glasses, but the railroad switchman might need to walk a long way down the track to remember which cars are on that spur.

For that reason, the real railroaders were skilled at keeping track of cars, whether having systems for where they'd place cars, or being very good about note-keeping, or just working on their memory. This video from "You Asked For It" from the 1950's shows switchman Brian Stevenson of the Rock Island's Kansas City yard demonstrating his photographic memory. The TV show runs a string of 40 cars past switchman Stevenson, and he attempts to repeat back the car reporting marks from memory. It's a neat memory demonstration, and a great chance to look at some 1950's boxcars up close!

What makes a social group work?

Pat LaTorres greets the public at a garden model railroad exhibit at Bay Area Maker Faire 2016.

What’s it take to keep a group active over generations?

Recently in London, I visited the Museum of Freemasonry at the London Grand Lodge. The Freemasons are one of the oldest fraternal organizations in the western world, combining fellowship, charity, and a bit of mystery together to pull men and women together. Freemasonry starred as informal clubs in the 17th century. Several related groups pulled together for unified rules and rituals around 1717. By the 1760’s, several dozen lodges were active in different pubs and coffeehouses in London.

List of pubs hosting active freemason groups in 18th century London. From Museum of Freemasonry collection.

The “mason” in freemasonry is based on supposed attributes of medieval stonemasons - individualists who would journey around to work on major building projects. Medieval masons created guilds for training, and secret handshakes and processes to help masons share their level of skill when working far from where they may have trained. The projects they built were the most impressive building projects in Europe, and the masons had the sense of building for the ages as they constructed cathedrals and palaces across Europe. The Freemasons borrowed the metaphors and rituals from the medieval guilds. When men are all hopped up on caffeine and focused on bettering the world with talk of democracy, bettering selves, and breaking class levels, borrowing such metaphors of secret truths seems almost required.

As the British Empire expanded, freemasonry followed along, providing lodges that brought together all of the British expats and administrators - one of the few ways for men at different levels of society to interact. The museum highlighted an early 20th century British surveyor who knew wherever he went - Cyprus, the Middle East, New Zealand. Or London - there was always a lodge he could visit to make local acquaintances. In India, freemasonry allowed the levels of (British colonial) society to mix. The members also found it a comforting group even at the worst times - the Museum of Freemasonry included the meeting notes from Masonic gatherings at Changi prison in Singapore during the Japanese World War II occupation.

Initiation well, Quinta da Regaleira.

There was also all the fun ritual and secrecy as masons claimed they were passing on secrets from past ages. Some groups took this more seriously than others. One of Portugal’s elites, Carvalho Monteiro, was so dedicated to his Masonic fun that he built elaborate features in his gardens just for Masonic initiation rituals. He built caves and a deep well with a spiral staircase leading down into the depths. The lodge would send the initiates into a cave at the top end of the garden and expect them to find the correct passage to climb the well stairs "into the light." To be honest, if I had a big garden and a ton of money, I’d probably want to build a big occult fraternal society clubhouse in my backyard too.

The London Grand Temple highlights that pride and popularity of the organization. The London art deco grand temple with its two thousand seat auditorium is a beautiful and visible symbol of the organization. San Francisco’s Scottish Rite Temple out on 19th Avenue was a similar reminder. West coast model railroaders and rail fans likely have positive impressions of the Scottish Rite temple in Stockton where the Winterrail multimedia shows were held.

Main auditorium, Freemason's Hall, London.

Freemasonry has declined over the intervening years in numbers and influence. All fraternal societies have fallen out of favor as trends and preferences for how folks spend their time has changed. Freemasonry’s pseudo-historical self-improvement rituals might not be as attractive in this modern age. Their philosophy and attempts to improve the spiritual nature of their members veer awfully close to 1970s cults from my uninformed point of view. Freemasonry also has a very conservative bent. At the London Grand Lodge, the dress code was quite proper and old fashioned. Men in black three piece suits carrying briefcases with their mason’s apron and regalia may not be so interesting for more informal generations. Regardless, they’re still one of the oldest fraternal societies and still have an obvious following.

As much as friendship and gathering appeals to me, I’m likely not a good Masonic candidate - too informal, and too much of a Generation-X cynical bent. I’d pursue E Clampus Vitus, but I’m not sure I can hold my drink sufficiently to make it in.

What’s this got to do with model railroading?

Looking through the museum, I saw reminders of our own concerns about the hobby, especially as members age and interests change. I see the differences in how each generation wants to show their modeling skill: model contests at meets vs. RPM meets with their show-and-tell feel, focus on individual models vs the layout as a whole, layouts focused on operation against round-and-round club layouts. Each of these tensions can separate modelers, limit the size of events, and sometimes cause tension and conflict. For model railroading, I’d hope we can find ways of keeping the communities together just for a larger hobby and more folks to socialize with. I also want the community to keep attracting and encourage the next generation so we have more folks to hang out with and learn from.

Like the fraternal societies, we worry about participation and expectations and uses of free time changes. Formal rituals - the weekly meeting on Friday nights, or expectation of the hobby as a “mens-only” operation limits who might be interested, or when folks have time available. (See also the comments about the decline of scheduled social acitivities. Church groups and bowling groups both have seen the decline. For bowling, league participation has dropped off even as bowling in general is still popular, hinting at changes at how we want to belong. Some in masonry just blame it all on the hippies and drugs which I suspect is not one of the challenges for model railroad socializing.

The fraternal societies also remind us of the need to jump on new trends and styles. For me, it was interesting to see how model railroading changed after the introduction lion of DCC - more focus on operations and operating weekends, the new sub-hobby of electronics and command control becoming a significant part of the community, etc. Here in the Bay Area, we’ve had the DCC lunch on Fridays which started as a place for a dozen folks interested in command control to meet up and share their latest projects. That group’s quieted down after COVID thanks to an aging-out of one cohort of members, less unexplored corners, and changes in who was working close by enough to meet up.

The masons opened their museum, I suspect, in order to be more visible to a younger generation and search for new members. It was a weird and interesting vibe - I got the sense they were proud of the museum and eager to encourage a new generation, but I also got the sense they weren’t completely ready to open themselves up to the world.

For a model railroad group, there’s times where I think we’re hiding ourselves in similar ways. In other ways, I think we’re much more willing to talk with the visitors from outside the community, share what we’re doing, and just share our excitement. Members at club open houses are willing to talk with the public, as are the folks at our local model railroad shows. We also see how similar groups can be public and friendly at events like the Maker Faires (plug: San Francisco Bay Area Maker Faire will be in Vallejo in October!). Adam Savage’s YouTube videos sharing his personal and commercial prop-making skills also shows as an excited and modern way to share the excitement of building for building’s sake - see his video on making a carrying box for his prop gun from the Blade Runner movie.)

Printing group, Maker Faire Bay Area, 2016.

Burning Man illuminated art, Maker Faire 2016.

I like model railroading. I enjoy having a hobby that lets me construct interesting things without needing to navigate city building code, market and coworker constraints at the day job, or be concerned about building things with some critical need. I like using the hobby as a chance to learn and better myself as I research local history, technology, and the scenery in the places I model. I like that the hobby lets me be social with a fun group of people and be part of informal and formal groups. I like that the hobby gives me a framework to help the community whether in restoring and operating real railroads, sharing local history, or encouraging kids to learn how to make and repair things. I like that the hobby would give me ways to work towards achievements if I wanted, but that I’m not required. We don’t have a secret handshake, but we’ve got a lot in common with the Masons. I’d just like to make sure we stay as something active, modern, and interesting for newcomers rather than something defined more by what we’ve been.

Getting Way Too Excited About Terminal Strips

In my last post about replacing the Vasona Branch's signal controller, you might have spotted those odd terminal strips in the pictures of the new signal controller. These are the Dinkle modular terminal strips (the 2.5N size) intended for professional use on industrial controllers and electrical panels. As someone who grew up using the vintage Molex black terminal "barrier" strips from Radio Shack, the terminal strips definitely feel like I’m in a new century of wiring practice. The individual terminals in multiple colors clip together onto a DIN rail, a common mounting bracket for electrical equipment like controllers and circuit breakers.

I found them great for model railroads (as compared with the traditional terminal blocks) for a few reasons:

• packs more terminals in the same space - about 3/16" per terminal
• multiple colors so easy to identify terminals and polarity
• inset test points for safer testing with voltmeter
• supports adding jumpers for wire-free connections between strips, and two jumpers allowed on any terminal.
• terminals are covered, so loose wire less likely to touch others.
• able to reconfigure as wiring changes - possible to pop terminals out of the middle to change colors, or move end clamp blocks to add terminals.

Close-up of the Dinkle 2.5DN terminals showing how they're wired and attached. Terminals are 3/16" wide, wire is 22 gauge.

The price is a bit more than terminal strips from Amazon; they work out to about 30c a terminal compared to 12c a terminal for the classic terminal strips. (They're all a deal compared to $4 each at Radio Shack back in the 1980's!) The other challenge is that getting an assortment of colors requires buying a box of 100 terminals at a time - that’s $30. Getting a good assortment (red, black, green, yellow, blue, white, and brown) requires spending about the same as a plastic locomotive. You’ll also need some of the DIN rail, and some of the end clamp blocks for securing a row of terminals. (For our low voltage uses, you don’t need the thin plastic endcaps to cover the last terminal in a row.) I’m planning on using all I need then selling off spare terminals to someone else if I've got enough unused terminals. I could also imagine having a group of modelers team up and share an assortment.

Jumper with every other pin cut. With these, I could line up a row of alternating green and white terminals for the different switch machine power feeds, then use two jumper barss to connect all to power coming in from a single pair of terminals.

The colored terminals are particularly nice for documenting the wiring. I use different colors for DCC supply vs terminals going out to the tracks (red/white vs red/black), and could color code for signals easily (red/brown and green/brown terminals for “upper” and “lower” signal lights at same location. Sets of terminals can be connected together using jumper bars that fit into the top (and don't interfere with the screw terminals.) 10 terminal jumper bars are available, and can be cut shorter to gang several adjacent terminals together. For the switch motor power, I ended up cutting every other pin from a pair of the jumper bars so that I could feed in the two wires for power to one set of terminals, and have power distributed to all the other pairs simultaneously.

The color coding and labeling also helps me double-check wiring and remember how things are connected years later. When I rewired my DCC track connections using the new terminal strips, I realized I’d mis-connected power from multiple boosters to different stretches of track, probably because I lost track of which terminals were for which section of the railroad. That mistake caused me to melt at least one locomotive when it shorted against a switch but was still getting power from a different booster.

Drawbacks? I needed to use a smaller screwdriver to fit the protected holes for the screw terminals - I couldn’t grab any random home repair screwdriver to turn huge screw heads. The terminals also bent a little bit when pulled by larger wires like solid 12 gauge DCC buses, but work fine for smaller wiring.

One of the rewired panels. It's much easier to understand now!

I’m slowly going around the layout, cleaning up wiring, adding labels, and adding the new terminal strips. I’m very, very happy with these - the terminal strips make it easier for me to understand the wiring even years after I’ve done it, and they make the underside of the layout look neat and organized. I suspect I'll love the terminal strips even more in ten years when I need to figure out a rewiring I did in the distant past.

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If you're interested in checking these terminal strips out: I got my Dinkle terminal strip parts from Amazon.com - search for "Dinkle 2.5N". Some sellers offer the components - separate purchases for boxes of 100 of each color terminal, for the end brackets which hold the terminals in place, the DIN rail, and the jumpers. Others offer assortments of 20 terminals of specific colors for common electrical projects such as solar panel controllers. The little assortment was a good way for me to decide the terminal strips were for me. I cut my initial cost when buying full boxes of connectors by just getting a few colors of terminals that I needed for some specific tasks such as re-wiring switch machine power. (I was using just green, white, and yellow for wiring connected to the switch machines.) I later got boxes of the other terminal colors as I rewired areas with other wire colors.

You can also see the terminal strips in use on the layout - the Vasona Branch will be open for tours at the NMRA Pacific Coast Region's 2024 Convention April 24-28, 2024 in San Jose.

Big Changes At Signal Gulch

Semaphores at the east end of Glenwood siding.

When is a model railroad “done”? Some might say it’s when it’s complete - when every scene is detailed and when the trains are running well. Some might say that a model railroad is always being changed, so it’s only “done” when it’s being torn down. I’ll throw out another option - our model railroad is “done” when we’ve confirmed that it’s the right design, when we’ve built enough to know “this is what it’s going to stay like”, and when we’re satisfied with the condition. One easy way to know when we’re satisfied is when we move from building new stuff to having to make big infrastructure changes - replacing a command control system, or changing control panels, or fixing other normally-invisible bits of the layout. If we’ve decided to do some wholesale replacement of some invisible aspect of the layout, that must mean the layout’s lasted long enough for us to need to do big repairs and that we’re happy enough with the layout to do the improvement instead of tearing down and starting a new one.

In my case, replacing the signal system suggests that I’ve done pretty good with this layout.

One of the pain points for my Vasona Branch layout over the last few years has been the signaling system. The real Los Gatos - Santa Cruz branch had automatic block signals (ABS) installed when the line was reconstructed after the 1906 earthquake. (Read Carsten Lundsten’s explanation of SP’s ABS signals here to learn what automatic block signals mean, and how the SP operated them.) The SP assumed the Los Gatos-Santa Cruz line was going to need increased capacity for future San Francisco - Santa Cruz traffic. As they upgraded the line from narrow gauge to standard gauge, they also added the automatic signals to minimize the effort of running trains over the mountains. In the narrow gauge days, keeping two trains off the same track required staffs and other physical tokens, or required explicit train orders to carefully control movements. Having multiple trains follow each other in the same direction was tedious and slow. The automatic block signals got rid of some of this work, allowing railroad crews to know the track ahead was safe to occupy. Note that ABS signals only provide protection, rather than authority. A green signal means that the track ahead is clear, not that your train is allowed to occupy that track. Those train order operators at the stations along the line are still needed to let trains know when they're safe to go.

On the model, the signaling system consists of a bunch of signals placed at intervals along the track, and a signal controller hidden underneath the layout. The controller keeps track of which tracks are occupied using detector circuits and notes which switches might be thrown away from the main line, and sets the ABS signals accordingly. Soon after I’d laid the track on the upper level of the Vasona Branch, I bought a pair of signal controllers - SIC24 (“Signal and Indicator Controllers”) from Team Digital. The SIC24 is a small circuit board with a programmable chip on it; using a DCC programmer (or LocoNet), I could program in signal logic so that if a particular track detector indicated a train was present, or if the switch on either end of a single track was thrown wrong, a signal would go red. The Team Digital boards could also be connected together so that an input on one board could affect a signal output on the other. I used two boards for the needed 16 inputs and 48 outputs. All the signals were within about 10 feet of the SIC24 boards, so I connected all the signals with twisted-pair code 26 phone wire - no need for scattering electronics around the layout.

Old signal controller. Not my best work, but it worked for more than ten years.

The photos shows one of the two SIC24 boards, and the phone cable providing the connection to the other board. This wasn't my neatest job, but it worked. You can see the signal power (large green wires with suitcase connector taps), inputs are yellow wires to the left, and signals are green/white and red/white wires below. I'd realized it was easier to put resistors on all the inputs and outputs here, so they're soldered onto the wires leading to the terminal strips. The odd shape of the plywood is because it's a scrap left over from cutting roadbed for curved track. I was unsure enough about whether the signals would be interesting that I didn't bother to build for good appearances.

The SIC24 boards generally worked well. They “just worked” when the power came on, they had sufficient smarts to run ABS, they were configurable enough to handle a couple of non-standard layouts on the place, and they didn’t require having a computer in the garage with the layout. Over the years, though, the SIC24 boards did start showing problems. One problem is that there’s no way to debug what’s going on; if the indications weren’t making sense, it was hard to diagnose exactly what was happening without attaching a voltmeter to inputs and trying to remember how I’d programmed the boards several years before. I ended up building a little circuit using an Arduino microcontroller board that could listen to the two cards talking and show on a tiny screen which inputs were changing, but that was clunky to use, requiring me to crouch under the layout, plug in the device, and look at a tiny 2" screen to understand what inputs were seen. Over the years, there were also times where it seemed that bits of the signal programming were getting lost. Because I don’t have any Digitrax equipment, reprogramming the cards meant detaching them from the layout, carrying them to a programming track, and attempting to reprogram the whole card from JMRI. I’d then have to reattach the card and see whether the change took - whether the signals now worked correctly. If they didn’t, I had to guess whether I’d mis-programmed the card or if the card was having problems. The several minute delay between making a change and seeing if it worked wasn’t fun, and caused me to give up on several bad signal problem.

I’d finally gotten frustrated enough to decide to replace the fifteen year old signal system a couple years ago. There’s plenty of choices out there, both commercial and home-made. The current NMRA Layout Command Control (LCC) standard defines how to build interoperable signal systems without a central computer. The LCC boards are expected to be scattered around the layout near the signals, then connected via a common bus to communicate. RR-CirKits is selling its Signal LCC and Tower LCC boards that work a lot like the SIC24s I’m currently using. However, they’ve still got the problem that debugging what’s going on requires a computer in the garage, increasing the work required for debugging. It also required me to get up to speed on a new technology, and I’d found some of the online manuals cryptic. Another possibility would be to go in the direction of Bruce Chubb’s centralized CMRI (Computer Model Railroad Interface). CMRI systems have a computer program control the signals, and defines how the different boards scattered under the layout all talk to the central computer.

Both of these are a bit of overkill for me. CMRI seems intended a larger and more complex layout than I have, and has expectations about having a desktop computer present running specific software. LCC has the decentralized and hardcoded logic that I liked from the SIC24, but has similar problems with monitoring and debugging problems, and required me to come up to speed on how LCC worked.

Unfortunately, my day job is as a software engineer, and so whenever I come across “do I buy something to make this happen, or do I just roll my own?”, I’ll often decide to go and build it. That’s often seen as a wasteful choice - why rebuild something that’s already available on the open market? However, for a small home layout, building my own makes more sense. I’ll know the design, know how to debug it when it breaks, and won’t be forced to do upgrades.

In a perfect world, I’d have a tiny Linux computer under the layout controlling the signals, I’d be able to write my own code for controlling the signals, and I’d be able to run a little web server to show the current status of the signals. That’s not a hard thing to do these days; I can buy a Raspberry Pi single board computer for $50. The only question was how to control the signals.

To keep my “no computers in the garage” rule, I chose to build from the Raspberry Pi. This is a little computer that’s the size of a deck of cards, but runs the UNIX operating system and can be logged into and programmed just like a larger computer. It’s easy to hide away, starts up within a minute, and is infinitely configurable. To handle the inputs from sensors on the layout and to power the LEDs for the signals, I chose Model Railroad Control System’s IOX32 boards, small boards with 32 inputs or outputs that can connect to a computer. The IOX boards are built for CMRI based layouts, but the way they talk to the computer, using the standard I2C wiring that lets different devices in a single computer talk, means they can be connected to the Raspberry Pi directly. I ended up getting a Raspberry Pi “hat” - an add-on circuit board that attaches to an expansion port on the Raspberry Pi - to provide the I2C connections. Finally, to help debugging, I bought a small two line display from one of the online electronics companies. This board also talks to the Raspberry Pi using I2C, and can be told to display short messages to help debugging.

Photo of new controller on the benchtop. I worked on the programming by logging into the Raspberry Pi over WiFi.

This photo shows the new signal controller mounted on plywood. The terminal strips for power, inputs, and outputs is at the top. The Raspberry Pi is the box with the red board in the lower left. The IOX32 boards are to the right of the Raspberry Pi, and the display and 5 volt voltage converter for the IOX32s is to the left of the Raspberry Pi. The crossing wires were needed to match the layout of the terminals on the old and new boards.

As can be seen from the photos, the signal system has a lot of wires going in and out. In order to make the replacement go smoothly, I set up the new system on a plywood board with terminal strips for all the connections, then wrote the software to control the signals and tested it on the bench. This also helped me confirm that the IOX32s could correctly drive the LEDs I use for signaling. More importantly, I made sure the terminal strips roughly matched the layout of the existing board so I could disconnect the old board, detach the old wires, put in the new board with controller, and reattach. I also made a few very good choices to help installation - painting the board with the electronics white for easier viewing under the dark layout, printing up very clear labels indicating the purpose of each terminal, and making sure I had good terminal strips for attaching the connections.

New signal controller in use. LEDs are for signals that aren't yet connected - I've added LEDs on the terminal strip to check their state.

Finally, I took a deep breath, detached and marked the existing cables, pulled out the old controller, and put in the new one. The new system required a bunch of manual work - soldering extensions on too-short wires, changing how some of the detector circuits were powered to ensure a safe common ground between equipment around the layout, and slowly reattached and tested that the signals still worked. This all happened within a couple long days, but it went well with no surprises.

The Raspberry Pi did make it easier to debug. Checking out the existing signals, I found one of my long-lived problems was an incorrectly-attached input for one of the switch positions. I also found some incorrect assumptions in my signal programming, and with a few lines of programming changes was able to get the signals working like the real thing. Debugging is, for now, looking at text logs spewing from a computer program, but I’m looking forward to writing some code to show the layout state on a web page next. I even added a lamp test action at start that flashes all the signals - this makes it easy to double-check that all LEDs are connected and are working.

The biggest drawbacks? The Raspberry Pi does have more complexity. It's a full fledged computer with a boot disk (stored in these modern times on a MicroSD flash memory card.) If the boot drive gets corrupted, then the signals won't work. I’ll need to keep a backup SD card just in case things break.

I must be happy with the Vasona Branch, because I’ve done a big wholesale replacement of the signal system. It took several weeks to get the home-brewed signal controller ready, but all the planning and preparation made swapping the old for the new an incredibly pleasant exercise. I now have much better control over the signal systems, can better understand why it misbehaves, and can quickly fix it so it works correctly in a prototype manner. There’s still lots to do before the layout is fully scenicked, Being willing to do this wholesale fix, though, reminds me how happy I am with the current layout, and how far I’ve come.

Bay Area Layout Design and Operations Meet: Feb 2-4 2024

My favorite model railroad event, the Bay Area Layout Design and Operations meet, will be in Santa Rosa this year on the weekend of Feb 2-4, 2024. If you've got any interest in designing model railroads, railroad history, or operating a model railroad in a realistic manner, you'll find this to be a great event!

As in past years, it'll have an activity on Friday (visit the Northwestern Pacific archives), and dinner on Friday night to meet with other attendees, presentations on Saturday, tours of local layouts on Saturday night, and operating sessions on local layouts on Sunday. The presentations will be in-person at the Finley Community Center, but virtual admission will let folks watch the presentations online.

I love this event for so many reasons. It pulls together a bunch of other modelers interested in recreating realistic historical locations. I'll get chances to share notes with others doing research on railroads. I also love that local layout owners give folks interested in operations a chance to operate on a variety of model railroads. I'll have some great conversations. I also got my introduction to operations at this event, and really appreciate the hosts opening their layouts.

If you'd like to join in, get tickets at EventBrite.

See you in Santa Rosa!