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THE MODELLING PROCESS
1. THE PROTOTYPE
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Sulphur was
mined at
Hoskins from
1923 to 1955.
Sulphur is
extracted in
liquid form
then cooled
into large
blocks (Frasch
process).
Pictured is one
of the sulphur
blocks at
Hoskins
Mound, circa
1943.
LOC photo
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Sulphur was
broken up
from the large
blocks then
loaded into
boxcars and
hoppers.
Hoskins
Mound circa
1943.
LOC photo
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Sulphur being
loading into
boxcars at
Hoskins
Mound.
circa 1943.
LOC photo
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Need to know
how much the
loads
weighed so a
scale was
added.
Scale under
construction
at Hoskins
Mound.
7-16-1923
BCHM photo
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Track scale
under
construction
at Hoskins.
Note the lack
of ballast.
7-16-1923
BCHM photo
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Scale under
construction
at Hoskins.
Knife edge
fulcrum is
being installed
7-23-1923
BCHM photo
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Prototype
example,
Milwaukee Road
RR, live rail on
the left.
Model Railroader
photo
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THE MODELLING PROCESS
1. THE PROTOTYPE
2. SCALE DRAWINGS
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HO Scale drawing of scale track and building.
Weigh scale is for 40’ freight cars (hoppers, gondolas, box cars).
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THE MODELLING PROCESS
1. THE PROTOTYPE
2. SCALE DRAWINGS
3. CONSTRUCTION
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Create
switch
points using
Fast Tracks
jigs.
Switch
points are
soldered to
PC ties.
Use ruler to
keep PC
ties in line.
Code 83
rail.
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Use a
scale
drawing of
weight
scale,
including
ties, rails,
pit, scale
house,
and switch
points as a
template.
Gauntlet
track rails
are 12”
apart.
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Wood ties
are glued
to rails with
Pliobond
adhesive.
Scale pit
concrete
walls and
scale house
foundation
are added.
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The dead
rails rest on
metal
plates.
Note the
live rails are
cut at the
inside edge
of the pit so
the railcar is
supported
by the
fulcrum.
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Points are
soldered to
a PC tie
and switch
stand ties
added
(note track
nails).
Temporary
brace
added at
end of
longer ties.
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Weight scale
house is
created using
commercial
board siding,
scale balance
sits on a shelf,
doors, and
windows.
Note the metal
covers on the
live rails.
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Modelers putty
will be added
to fill in gaps at
corners of the
building walls.
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Sub
assemblies,
scale pit and
building
foundations
and rails
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Bottom side
view showing
metal bits
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Beginning to
paint sub-
assemblies.
Brown stain on
ties, concrete
color on
building,
brown trim on
windows and
doors.
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THE MODELLING PROCESS
1. THE PROTOTYPE
2. SCALE DRAWINGS
3. CONSTRUCTION
4. INSTALLATION
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This where the
scale will be
added, on the
loading track
of the Sulphur
plant.
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Rails and sub
road bed are
removed.
Shift workers
arriving by
dedicated
passenger
cars.
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Test fitting
assembly.
Note the
additional
support braces
for the switch
stands.
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The switch
stands are
held to the ties
with 2x56 bolts
and nuts.
Note the PC
ties have
insulating cuts
in them.
Solder rail
connections
and add
jumper wires
as needed.
Connect LED
lights inside
scale house.
Caboose
Industries
202S
ground
throw
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THE MODELLING PROCESS
1. THE PROTOTYPE
2. SCALE DRAWINGS
3. CONSTRUCTION
4. INSTALLATION
5. WEATHERING & FINAL DETAILS
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Prepare to
paint rails and
ties with
acrylic rail
brown (used
air brush).
Note the
Sulphur block
in the back
ground.
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After painting
rails & ties, add
ballast.
Ballast is glued
with 50/50 mix
white glue and
water. Alcohol
was misted on
the ballast to
help deal with
surface
tension.
Woodland
Scenics
fine grey
ballast
B1393
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Use India ink &
alcohol mix on
the ballast to
match
adjacent
ballast.
Add grass and
weeds.
Apply rust on
metal bits, and
age ties with
light colors.
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Note the scale
house interior
lighting, steps
to doors and
miscellaneous
details.
There is a 1955
calendar on
the inside rear
wall of the
building.
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Knife edge weigh scales may not be able to support the weight of a locomotive, or the
locomotive acceleration with risking damage to the fulcrum. So in practice either cars were
either pushed individually onto the scale (static weighing) or a series of cars pulled across the
scale (weighed in motion).
The weigh scale at Hoskins is designed for the 40-50 ton freight cars, and 40’ long. Hence the
gauntlet track design allows the locomotive to run on the dead rail, and cars to be weighed
are switched over to the gauntlet track. This requires at least one idler car between the
locomotive and the first car to be weighed. The gauntlet track and scale is three cars long.
Today weigh scales are much simpler since strain gauges are used to determine the car
weight.
Related articles:
Model Railroader September 2002, pg 68-71, Bill Darnaby
Model Railroader April 2009, pg 40-41, Cody Grivno
Buy versus build:
Walthers 933-3199 track scale kit
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THE END