I should have made more/some progress on framing the layout, however, I wound up being sidetracked by my new-to-me K-line diecast frame tank car, B&O X417. Who knew that K-line modeled a car that was actually on the SIRT?
I milled down the bosses that served as "center plates" on the frame and trucks so that the "center plates" and "side bearings" will be in direct contact and make the springs do their job of equalizing rather than having the carbody wobble as it rolls along. Having gutted the tank preliminary to filling it with concrete, I drilled and tapped the holes for the four 4-40 machine screws that will now secure the tank to the frame, then plugged them with the screws to prevent leakage during filling and ensure sufficient room for them in the ballast. The Quickcrete went everywhere, as always, but it's worth it to obtain a more realistic looking and sounding ride.
Now I just have to FIND the tiny compressor in my various parts piles which will be then be mounted adjacent to the dome, install some dummy piping, weather it all... and, presto-change-o, she'll be ready to supply fuel to the S-2s at the Arlington engine house - when it's finished. I can't wait to have my very own Superfund Site!
All photo and research credit to SIRT and his terrific Staten Island Rapid Transit History site at: https://steves3roscale.shutterfly.com/pictures/5177