Subway

Modeling Subways

I realized that my subway material was scattered over several pages, and I didn’t really have anything that tied them all together. Also, some of the pages were a bit out of date. The main page is the Subway Line page. I’ve updated the outdated material, and here’s a post to describe what I was trying to do, how I went about it, and what I’d do differently next time. I’ll link to other pages in the text below.

A subway isn’t something you find on a lot of model railroads, but then most model railroads are focused on freight operations. Even ordinary railroads back in the steam era had underground stations (New York’s Grand Central Terminal has 44 platforms, all underground). Property costs in modern cities make it even more likely for structures to be built above the tracks, partially or wholly covering the station. Boston’s Back Bay station used to be above ground, largely in a cutting, but today is mostly out of sight below ground except for the entrance building and ventilation stacks.

Despite the high property values in Tōkyō today, most of the stations are surprisingly at or above ground level. In part that’s because the rail lines’ growth came after dense urbanization, so elevated lines were a more practical solution for expanding them. The city does have subways, and most of them use the same gauge track and same voltage power supply as the above-ground commuter lines, so some of these subways provide access to the city center for suburban commuter trains. Several subway lines have underground stations below or near surface line stations, to allow transfers.

I’ve used that as an important aspect of my modeling to capture the “layered” feel of urban railroading. Cities rarely exist on a single level, even ignoring multi-story buildings. There are often below-ground open plazas and hidden shopping arcades, and highways and rail lines exist and cross on multiple levels. Cities aren’t flat, and models of cities shouldn’t be flat either.
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Micro Ace E231-800

As any regular reader knows, the JR East E231 is the train the sparked my interest in Japanese trains, and in particular in the commuter trains of Tōkyō. I’m not really clear why myself. Objectively they’re simply boxes engineered to move large numbers of people rapidly. Perhaps it’s the simple functionalism of the design, coupled with the fact that it represents the culmination of fifteen years of re-engineering the commuter train, begun by the Japanese National Railway in the 80’s, and leading through several intermediate designs to one that now numbers over 2,700 cars. The E231 is hardly the end; evolved designs are already out there in the E233 and the prototype E331 (Japanese Wikipedia). But with the E231, JR East reached a point where the design achieved the original goal of “half the cost, half the life”, meaning a reduction in both initial cost and maintenance, at the expense of a reduced lifespan (15 years versus 30).

The E231 has been produced in many variants, but one of the most interesting lacked a model until now, the E231-800. This train, of which only seven 10-car trains were made, was produced to provide run-through service from JR East’s Chūō-Sōbu Line to the Tōkyō Metro Tōzai subway line. These replaced older 301 and 103 series trains dating from the 1960’s. For this use, the standard E231 body was reduced from 2.95m to 2.80m, giving the front a more squared-off appearance. Also, end doors were added to the cabs for in-tunnel emergency exits.
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Subway Trains

In some ways there isn’t a whole lot of difference between Tōkyō’s urban and suburban commuter trains and its subway trains. Both are electric multiple-unit (EMU) sets, running on narrow-gauge track and typically using 1500V DC power from overhead (catenary) wires. Some commuter trains even run through into the subway tunnels to reach more central stations.

But there are differences. First, subway trains (and commuter trains designed for subway use) will have emergency exit doors on the ends, to facilitate evacuations in a tunnel. Second they are often shorter, to allow for tighter curves. And some are also narrower, although this seems less common.
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Subways of Tōkyō

You’d think someone who’s built a Tōkyō-inspired model railroad with a subway on it would know a bit about the subways of Tōkyō. But in fact when I started construction I knew next to nothing, and I’ve only recently begun to rectify that. Part of the reason is that I’ve been focused on the commuter trains of JR East, and JR doesn’t operate any subway lines (although they do operate a couple of subway trains, as we’ll see in a bit). And part of it was that models of subway trains weren’t all that common, and I hadn’t collected any.
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Of Vending Machines and Subway Stations

It took longer than expected, but the Riverside Subway station, now known as the (fictional) Tōkyō Metro Kawate station, is done and servicing commuters and schoolkids making their way about Sumida Crossing. Or at least it will once I finish the much-delayed work on the power systems and get the trains running again.
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Kawate Station

What’s in a name? I needed signs for my subway station, and I knew what form I wanted from some photos I found online (here and here) But these needed to identify the station, the subway line it was on, and the adjacent stations on the line. What line? And what station name? It’s not supposed to be any specific prototype. I’ve been calling this part of the layout the “riverside scene” and using “Riverside Station” informally up to now. And while I could have named it Riverside, that seemed wrong. Japanese signs use a lot of English, but rarely for place names.
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Riverside Station Subway Foam

And finally, work begins on the Riverside Station scene in earnest. The initial focus will be on getting the Rapid/Shinkansen tracks operational. This is the outer loop, that crosses this scene in the front, running above the subway station at the right end of the scene. To do that, foam for the left portion needs to be shaped and painted, which is relatively simple (and was mostly done this weekend, although there’s still a bit of green to be added after some of the primer dries).

The real work will be getting the roof over the subway station built (and putting in the Subway station itself). This hasn’t been done yet, although the plan is final: a strip of foam will form the riverbank, and hold up one edge of a sheet of 0.080” (2mm) styrene that forms the roof of the station as well as the roadbed of the Rapid/Shinkansen tracks. The front edge will be held up by a half-inch strip of 1/8” aluminum supported on wooden posts, just over the cut-out “windows” that provide a view of the subway.
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Subway First Run

Sunday, 13 June 2010 was an historic day for Sumida Crossing. After the track was all cleaned and re-installed, and the wiring completed, it was time for the trains to take a run. The actual first loop was done by a “maintenance of way” train (actually an old Atlas B23 I was willing to sacrifice if I’d made some horrible wiring error). That done, I broke out the East-i E Inspection Train, and had it take a run to check out the pantograph clearance and general track usability. And I recorded it and made a short video.
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May 2010 Status - Carving Foam

Time marches on, but it seems to be crawling on the banks of the Sumida. The hillside covering the subway has made little apparent progress over the last month, going from squarish blocks of pink foam to carved, but still pink, sections, which only just received a first coat of primer (and have yet to be glued in place).
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Measure Twice, Cut Once, Get it Wrong Anyway

Some days it doesn’t pay to go into the railroad room. I had spent the weekend carving foam for the hillside that separates the Urban Station scene and the Riverside Station scene from the large river. Just before I was ready to glue it down, I decided to check the clearance of my subway tunnel, and found it seriously wrong. After realizing that my “two-inch” insulation foam was 1.75 inches thick (and I’m sure I measured it before), and raising it up with a chunk of gatorboard (barely visible above, on the left below the pink foam), I still had a bit of a problem. Read More...

Incremental Changes

Work on the layout continues, but without much visible to show for it. Mostly it’s been more of things I’ve already done: building the second set of supports for the other half of the elevated station, more roadbed painting, and preparing the fascia for the Riverside Station scene (complete with cut-out windows to view the subway). Read More...

A Final Track Plan, I Hope

I spent most of the last month refining the track plan, first with the height and approach tracks of the Urban Station, and more recently with the mess of track at the right end of the Riverside Station scene (above). This last part has always been a headache, as I just couldn’t get everything I wanted to come together.
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January 2010 Status - Planning the Upper Level

This month was spent thinking about the track that will go on the upper (ground) level, above the subway. I never actually did finish wiring up the subway loop (although I can run trains on it using DC, they get a bit slow on the opposite side of the loop from the powerpack; rail is a poor conductor of electricity). Read More...

December 2009 Status - Subway Track in Place

The subway level track is nearly complete, with the underlying foam and cork glued down, and the Unitrack in place. Read More...

It’s Alive! - November 2009 Status

Work has been progressing more slowly than I’d like, and the first level of foam has yet to be glued down, or the subway track installed. The backdrops were taken down and repainted in a lighter shade of blue, and I’m much happier with them now. Read More...