Coal Car Trucks Ready to Paint

After redesigning the trucks with inside brakes, I printed a test copy. It worked fine the first time, but I noticed the axles could be a little tighter in the bearings. This should assist with getting the ride height of the cars correct. A pair of .005″ shims inserted after the wheels seems to keep […]

The Wrong Coal Cars?

Have I been drawing the wrong coal cars? This is a question that has been bothering me for some time. Basically, ever since I couldn’t get the side stakes to match the varying spacing on the lone photo I have of Canada Atlantic coal cars. This spacing could indicate the presence of slope sheets, meaning […]

Coal Car Brakes Revisited

“Oh Bother,” Said Pooh, as he examined once again the lone photo of Canada Atlantic coal cars. The photo is barely worth looking at, they’re so distant, but comparing to other cars nearby, Pooh was pretty sure they had brake beams slung from the truck transoms, rather than slung from the underframe outside the trucks. […]

Refining the Coal Car Trucks

When I visited Gary Hinshaw after Christmas, we were commiserating about our 3D printing woes. I’ve been feeling that my printing has gone downhill since I got new resin last year, and hearing that Gary felt the same, I decided to look into it. Well, it turns out that printer calibration is a thing, and […]

Coal Car Test Truck

I refined the truck design a little over the holidays, and assembled a couple of test prints. The mechanical aspects are fairly good now, and as you can see it equalizes quite nicely. I just have to improve the supports a little so I don’t lose any more brake beams!

Coal Car Trucks

I’m taking a little break from Percy as I wait for some slightly larger, more powerful motors that I ordered earlier this week. I cast about for another project to pick up for a week or two and alighted on the coal cars. They’ve been waiting for a resolution to the weight problem, and they […]

Coal Car Test Print

From 3D file to the first print always makes me feel like a ten-year-old on Christmas morning. A ten-year-old with a ventilator, gloves and safety glasses in a basement workshop that smells more of chemicals than of pine. With this being the first whole car I’ve attempted to print, I hardly expected it to work […]

Coal Car Brakes

The brake systems on hopper cars are often tight for space. So, it’s useful to be able to check clearances before construction. In the case of the coal cars, I found the train line was a little too close to truck bolster for my liking, and so, I raised it a scale inch or two. […]

Standard Parts

As I’m working on a 3D model of a freight car, there are some parts that lend themselves to reuse. Brakes, stake pockets and pipe fittings are natural candidates for standardization. So, I’ve established an OnShape document of some standard parts that I can import and use on any other car I might design. John […]

Coal Car Progress

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 […]