I’m a newbie regarding model trains. I have a question regarding Atlas O scale boxcars such as WP 586047 and others?
Why are the couplers, trucks, wheels and axles cheap, barely moveable, plastic while the car itself is so finely detailed?
I bought a few of these cars and can’t run them because the trucks and wheels are horrible.
I have none of those problems with my older Atlas cars. The couplers are indeed dummies, but many "operating couplers" were so poor that they became functional dummies. "Barely moveable"? Mine roll and turn just fine. The cars are very light, but that is what added weight is for. The 60's/70's plastic trucks are also well-detailed and good-looking.
I have indeed mounted modern trucks on older Atlas that I got "truck less" using a piece of plastic sprue glued into the car bolster holes, the drilled for the screws you are using on the new trucks. I also use similar methods to convert cars from 2- to 3-rail trucks - and sometimes I use old Atlas trucks to do the job. (Occasionally they show up for sale at good prices.)