Having submitted a few ideas in the past I had to take everyone’s knowledgeable input and leverage some strong thinking ( yeah I know the smell of burned rubber is pungent ) into the less is more concept and looking at space and time constraints and how to fit this into my current work schedule. 

Everyone:

Except for the hump yard on the original Chicago Museum of Science and Industry(O Scale) and Allen McClellands' original V&O layout, has there ever been any other working HO Scale hump yards of note? If you were going to build a working hump yard, how long would you make your bowl tracks? What about the grade of the hump hill?  How many classification tracks? Speed limiters(retarders)? Equipment that doesn't roll well or roll too well?

Hi fellow hobbiests

I have a Rivarossi 4-8-4 (UP No 844) with what I'm told has a 3 pole motor.  I don't know the year of manufacture, only that is old and in good condition and runs great on DC and a DCC conversion is what I have in mind for it.

I have this hopper a weathered using a photo of the prototype,

but I have no idea what was in these cars and where its destinations would be.