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A3 Sized Layouts
A very handy size for micro layouts is the metric A3 paper sheet,
which is 297x420 mm, or about 11.7"x16.5". Just open out any A4-sized
magazine, and you'll see an A3 sheet. There have been several
competitions for layout design in this size, with more on the way. So
herewith, a selection of A3-sized micro designs -- beginning with a pair
of Gn15 layouts (1:24, or 1/2" = 1'). If it can be done in that scale,
any smaller scale should be easy! Your contributions are invited.
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Jack Trollope recognized the limitations of the
A3 size on Gn15 rolling stock maneuvers. He designed around this issue by creating
an intra-works industrial tram line at the Avery-Labelle Manufacturing Co.
Central to the layout's operation is a six-inch diameter turntable that accesses
nearly all the trackage on the baseboard. Behind the scenes, an unconventional traverser
slides back and forth, conveying rolling stock from the hidden siding to the Works
gate that provides entry to the layout. The turntable will hold a small two-axle
switching locomotive and a single four-wheel wagon.
The operating pattern is to move carloads of raw materials onto the layout through
the gate, turn on the turntable, and deliver the loads to one of the sidings that
enters the Works building. In the process, carloads of finished products will be
collected and moved in the opposite direction, out to the hidden siding which represents
the "rest of the world."
Considering that Gn15 is a scale of 1/2" = 1', this tiny A3 sized baseboard
is an intensely busy place! Obviously, the same plan works even better in On30 /
O-16.5 scale.
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Carrying the Themes to Extremes
 Taking
the theme of an intra-works tramway railroad to a further extreme, here is the AAA
Molasses Works, a two-level Gn15 industrial line that brings molasses from the
mine to the processing plant, distributes materials within the works, and delivers
the finished product in jars or barrels to the Interchange track for shipment to
the outside world. In this case, the Works building occupies nearly the entire baseboard,
and tracks weave in and out of it in complex ways, much like a variety of real-life
industries.
It was E.L. Moore, the Structure Sage from North Carolina, who first discovered that
molasses is actually a mineral that is dug out in mines and smelted down to form
the viscous liquid that we all love (Railroad Model Craftsman, February 1969).
The AAA Works is based on Mr. Moore's epochal discovery, but writ large.
For the mechanically inclined, there's a lot of activity here -- a hidden turntable
inside the building, used to distribute cars to a variety of destinations; a train
elevator that llifts cars and locomotives from the ground floor up to the first floor,
where processing begins; a working wagon tip, where the molasses ore incoming from
the mine at the upper left (off the baseboard) is poured into waiting works wagons
on the track below; and an animated interchange track where the outgoing products
are shifted from the intra-works tram to standard gauge wagons for shipment to the
eagerly waiting world of commerce.
If you trace out the traffic patterns available on this small hunk of real estate,
you'll be amazed at the variety of operations that can be performed on this little
layout!
I would recommend that the rear of the building be left open for access from behind
by the operators, creating a broad range of "fiddle" possibilities to further
enlarge the gamut of operating possibilities.
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As an A3 sheet size is just two A4 sheets placed side by side, astute model rails
have observed that one can also place two A4 sheets end to end and still cover an
area exactly equivalent to an A3 sheet. This geometry can be a basis for interesting
micro layouts.
Terry Allen is using two A4 sheets to produce Kelso Creek, a rock hauling
railway located somewhere between Indiana and Scotland. Terry describes it thusly:
"Kelso Creek represents a tiny section of a quarry, with small flat wagons on
the high level incline moving large chunks of rock from the rockface to the grinder
(offscene).
"The mid level uses my Midge loco (from a Sidelines Models kit)
and converted Gnomy tippers to transfer broken stone into a waiting truck. The lower
level is just to show my Gnat loco and various wagons (still more
Sidelines kits) moving from the tunnel to a workshop."
Terry will be exhibiting this ingenious layout in a few months. We hope to bring
you progress photos as construction proceeds. |
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Addendum: As promised above, here are two
work-in-progress photos of the Kelso Creek Quarrying Co. construction. Although some
detailing still remained to be done, Terry had basically finished the layout by March
2003, when these shots were taken.
 
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Home for Roamin' Gnomys
 Also designed for two A4 sheets laid end to end is Jack Trollope's
Tramways de Chamiex-Les Thurs. This active little tramway is designed around
a batch of converted Gnomy carriages (similar to the pair by Terry Allen shown at
right).
The modeled Tramways platform is a busy place! First, a green tram appears under
the archway (lower left), runs into the lower platform, stops and waits. A second
tram, this one red, appears in the archway, runs to the upper platform and waits.
The green tram returns to the building with the archway, and then the red tram runs
off into the woods, looking for greener pastures.
These shenanigans can continue ad infinitum, with a rainbow of trams appearing
under the archway, put in play by the busy hand of the operator. Occasionally a tram
locomotive, also a converted Gnomy car like number 2 in the photo, can appear pulling
a very small wagon or van, then pause at the platform to be unloaded. But the main
event is a never-ending parade of multi-hued Gnomy carriage conversions (placed on
SPUD power trucks).
The layout is nominally On30 / O16.5, but can also be built in 1/32 or 1/35 scales,
for which the Gnomy material also makes an excellent conversion. The layout measures
8.25"x23.4" (210x594 mm).
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Smallest (interesting) Inglenook?
 I'm often asked, "What is the smallest
possible Inglenook layout?" There are actually two questions here.
The first is, "What's the smallest baseboard size that will hold an Inglenook
type layout?" The second question is, "How much capacity can I cut from
the sidings and still have an interesting switching puzzle?"
Here's one approach to answering both questions--the A3 Sized Inglenook. A
lot of experimenting has convinced me that the canonical Inglenook size of 5-3-3
car sidings can be reduced and still have interesting switching. The smallest that
I think practical is 3-2-2 car sidings, with a 3-car (or 2 cars + Locomotive) lead
track (head shunt).
Here's the resulting track plan, which fits comfortably in an A3 sheet size (297x420
mm or 16.5"x11.7"). It's designed to resemble a conventional quarry-face
mining railroad, and even includes a loco storage and repair shed. The switching
puzzle would involve assembling a designated four-car train from a random assortment
of six cars scattered among the sidings.
The layout can be bult in either Gn15 or On30 / On18. The price you pay for squeezing
these large scales into this small space is 6" radius curves and handlaid track,
with four-wheel cars (wagons) and tiny four-wheel "critters" for motive
power. I suggest using stub switches, which require less room and are virtually foolproof
in this kind of track arrangement. Building it in the very-small scales -- HO, N,
and Z -- would require significantly less space. As always, car-capacity of the sidings
will determine the over-all dimensions.
For more information about Inglenook switching problems, see the Inglenook section of this Gallery
or consult The Model Railways Shunting Puzzles Website.
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A Different Switching/Shunting Pattern
 Accomplishing interesting operation with very simple means
is the goal of Jon Songøygard, from Norway. Towering Burden Industries
fits an HOn30 railroad on an A3 sheet (16.5"x11.7") and offers interesting
switching with a simple passing siding (runaround loop).
The setting is a "mechanical industry" (machining and assembly plant),
which includes a storage shed at left, part of the factory at the top, and another
factory section and scrap pile at the right. Jon describes the operation this way:
"Traffic goes from the factory at right, via the department on top, to the normal
(standard) gauge track at left (with a storage shed next to it), and back. There's
also a runaround track for the operator. At the top department you can fiddle cars,
so the tracks there actually suggest the entrance to a bigger yard.
"With the addition of a normal gauge train cassette on top, one could even change
the normal gauge setup during an operation session. This would then be the real
connection to the 'outside world'.
"The loco shed has no actual importance and could be omitted, but I think it's
nice to have a specific spot for the workhorse."
Built in On30 or O16.5, this little layout would occupy only about 24"x18"
(60x45 cm). Towering Burden Industries manages to squeeze in a lot of operations
using a very simple track plan in a minimum of space!
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Serving a Hospital in Ipswich
Ian Bareham's entry in a recent competition for
layouts built to fit on an A3-sized baseboard (or two A4 sized sheets placed end
to end) was this attractive display, St. Augustine's Hospital Railway. The
freelanced hospital is set in the eastern side of Ipswich, Suffolk, and the hospital
railway supposedly connects with the LNER line at Derby Road Station. Ian has modeled
the hospital end of the line, in the years shortly after World War II when hospital
railways still flourished in England.
The architecture is based on Ian's observations of real hospitals and his experiences
working in a similar mental-health hospital. The photographic background depicts
a real hospital, High Royds. Careful attention to atmosphere has paid off with a
very convincing setting for this OO gauge railway, contained in a 210x594 mm space
(8.25x23.4 in).
The plan of St. Augustine's Hospital Railway is
basically simple -- trains appear from the junction on the track at the left rear
(open to fiddling from the back), and shunt goods (frieght) into the hospital's receiving
dock at front left. Passenger service is handled from the platform at the front right.
A locomotive shed is provided at right rear, to store the line's own battery-powered
loco as well as some of the LNER locos (that Ian has constructed for the layout),
and a Ransome's diesel on loan from the firm's famous works, which is right down
the road from the hospital. This is a bustling, active little railway in a prototypically
accurate setting.
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