For one reason or another, I’ve been absent from the railroad room quite a bit these past few months. This makes progress on physical projects difficult, but virtual projects can continue. The coal car, which I’m almost ashamed to say has been on my desktop for a year, is nearing completion.
In thirty years of looking, the only photo of Canada Atlantic coal cars, is still the yard shot in Niall McKay’s book. We know the cars’ dimensions from the ORER, and the photo gives a sense of the number of stakes, and a deep needle beam. So, the model is an amalgam of better-documented cars, with the bulk of the design based on the drawing of a New York, Lake Erie and Western RR car that appears in Train Shed Cyclopedia 57; I started with a Norfolk and Western car, but could not figure how to add air brakes. I’ve had to shorten it by a couple of feet, and increase the height to match the ORER dimensions. Also, the Canada Atlantic cars did not have the truss rod running along the side, and so, I replaced that with cross-members.
One thing that bothers me about this model is the height, especially as I compare it to the photo once again. It looks a little taller than the cars in the photo. Is inside height measured from the bottom of the hopper, or from the floor of a car like this?
Pembroke:87 
Based on the wheel diameter’s as a relative measurement, I would say you are fairly close to correct. Maybe the white dots are Tack boards with fresh paper on them? Nice 3D, by the way
Thanks Jed
Do you know the dimensions of the boxcars? Back in the day, some weren’t even 7′ IH. It’s hard to judge from the photo, but those look on the small side. That may provide a helpful comparison with the gons.
The ones in the photo are the Ottawa and Boston lumber line cars. 7.3 inside height.
Have you printed it yet?
AH
No, but soon