I finished the primary body assembly tonight, including installing the window frames.
The undercarriage begins with the car bottom - note the pre-cut notches. Again, these are to make the assembly fast and keep the parts aligned. The two hexagonal holes on each end are to capture M2 nuts for easily attaching the Kadee couplers. The nuts are trapped by the .020 frame flange and the platform grating.
Cross pieces and two main beams are notched to mate with each other, and tabbed to insert into the car bottom. The .020 under the beams is a single piece, also with same tabs and holes as bottom.
PRR Horseshoe Curve - Do you know the specific issue the plans for the G-39 are in? I have a set, maybe the same ones, although they aren’t very detailed and resolution is low.
