I just won a couple of great looking 3rd Rail brass cars on the Trainz/Dash auction site. They were the PRR chlorine car:
and the Ambrose Wine Co. 6-dome tank car:
However, the above pictures are not how I found the 6-dome car in the box. This is what it looked like out of the box
Zinc pest destroyed the trucks. I knew this when I bought the car, but I was not sure how to fix it. I had an Atlas O outside braced boxcar sitting next to me, so I thought why not try the Atlas trucks on the car. The Atlas trucks are attached with a simple short screw, while the 3rd Rail trucks had longer machine bolts with springs. Was not sure it would work.
Well, I placed the Atlas trucks on the car and screwed the longer bolt in with spring and the truck was nicely held against the car by the spring. I was worried because the 3rd Rail mount was much thicker, but the truck swung freely.
There was not a lot of clearance between the wheels and car body.
I tried it on an O-54 section of my test track and the car tracked well. Looks like this will work but I won't know for sure until I run it in a full train. If this doesn't work out, I'll try MTH trucks next.
