For weathering wheelsets I brush paint the wheel flange and wheel tread Tamiya Gun Metal X-10, the wheel plate facing outside of gage(wheel bearing or brass journal side) for solid(brass) journals Pollyscale oily black and roller bearing rust, back of wheels facing track gage rust, for rust paint I use Delta Ceramcoat Raw Sienna 02411, axles are also painted rust. Truck sides are painted with Delta Ceramcoat Black 02506 and truck springs rust using Raw Sienna 02411. Black 02506 and Raw Sienna 02411 is flat finish acrylic available at Hobby Lobby and inexpensive, Tamiya Gun Metal X-10 has gloss finish available from hobby shop.
I also brush paint the coupler body and knuckle the rust color 02411.
