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All of which leads me to wonder, why are there no ETCHED BRASS
coupler boxes? Thin sides
could be strong, and to scale. Paper thin resin overlays could
be applied for extra detail.
On 3/7/2022 10:57 PM, Dennis Storzek wrote:
On Mon, Mar 7, 2022 at
04:57 AM, Robert Ellis wrote:
comments about draft gear got me thinking. There are accurate
scale parts available to model virtually every component of a
freight car, at least in ho. The one exception is draft gear.
Now that there are alternatives to the Kadee #5 that don't
require a "coupler box," wouldn't it be nice if someone would
produce accurate scale draft gear, compatible with Accumate
and Sargent couplers?
I want to thank Eric Hansmann for the nice write-up on the
Proto:HO Accumate. However, to answer Robert's question, truly
scale sized draft gear is still in the future. The reason is the
prototype draft gear fits in the 12-7/8" space between the
center sills. That's just .148 actual inches. I worked hard to
get the Proto:HO box narrow enough to match the 20-1/4" wide
cover plates typical on steam era freight cars, so it appears
the center sills continue through the bolster as they do on the
prototype, but at the expense of "borrowing" the depth of the
channels the sills are made of. The interior of the box is still
about .040" wider than a true reduction of the prototype. Even
if someone 3D prints a three dimensional box, it's either going
to be too wide to match the sill spacing, or the walls are going
to be impossibly thin. I think the best we can hope for is 3D
prints of draft keys and the forging they ride in, complete with
rivet heads, that can be glued to the sides of whatever box is
on the model. The rudimentary draft key detail molded on the
Proto:HO box can be sliced right off.