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35
35: Next I needed to determine the spacing of the
major ribs. In studying the photo of Erie 72893 ( which
provides a good view of the roof ), I determined one
rib sits in the exact center of the car end-to-end.
Next, I counted rivets ( yes, I’m doing it again ) and
came up with a width of 20” from the edge of the roof
to the edge of the first rib. That dimension also puts
the rib under the running board corner that leads to
the ladder down the side of the car.
All this counting and measuring gave me three
reference points, so I marked these points with a
pencil line. When cementing these ribs in place, I took
extra care to make sure that they were square with the
roof, since the rest of the ribs will be built off of these.
I cemented 1” x 6” strips of styrene at these locations.
Starting in the center, I made sure that I was equal
distance from each edge of the roof to each edge
of the 1” x 6”. I followed up with the outside ribs
working the same methodology. Measuring in from
the end of the roof to the edge of the 1” x 6” and also
between the center rib and the outer rib.
STEP 8A: Adding the Major Ribs
The Erie RR Boxcars Part 2 - 5
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MRH-May 2013