BNSF 474810 represents a Trinity built 3 bay hopper. This particular car was built in Oct 1999 and has served on BNSF since. The prototype has 5161 cubic feet of capacity and 55 ft of length. Oftentimes these cars travel in BNSF unit grain trains, which, due to the uniformity of mineral brown coloring, are sometimes referred to as "earthworms". Watching one of these earthworms pass by can be fairly uninspiring, until you start to look closer. Despite all the BNSF Trinity hoppers looking the same there are actually quite a few variations.
This car represents only one of the variations. It has 12 panels, some only have 10. The circle-cross BNSF herald is located towards the end of the car, whereas some are located a few panels towards the middle. The herald weathers very differently from car to car. Some are bright white, some are bleached out, some have peeled off, some are uniformily caked in grime similar to this one. This car has 12 roofwalk supports per side, some have many more. This car has no stiffening braces welded at the ends of the car. The reflective stripes are all horizontal on the sill, whereas many have them all vertical, some are mixed, and some do not have any. It is a boring car, yes, but it does portray correctly one of the many subtle variations between cars.
This is a factory painted Athearn Genesis model that retained its original numbers. The car was Dullcoted, then the color was changed from red to faded terra cotta using acrylics (terra cotta, burnt sienna, and orange) in washes. I then applied mixed chalk powders to even out the fade and fine-tune the color. I cleaned off the lettering using a damp toothpick, then hit the car with Dullcote. I then grimed the car using several light layers of raw umber oil filters until I was happy with the overall dirtiness. I then darkened the ribs using carefully applied oils. Powders were next, and they were used around the ends and sills to fade into the rest of the car. The underside was done in much the same way, though I varied the color to get more of a muddy/dusty color. I flicked paint on the bays to simulate splatter. The same technique was applied to the inside of the end cages to get the wheel splatter in there. Lots of raw umber, burnt umber, black, etc was mixed up and used to lay the thick grime layer over the draft gear, truck bolsters, and horizontal parts of the end cages. The trucks and wheels were both sprayed with Krylon camo brown, then the colors were adjusted using acrylics. Finally I applied various shades of brown powders to the wheel faces and some light gray/tan thinned acrylics to the lower portions of the truck. Final coat of Dullcote, then stuck a fork in it