The Branchline under frame is designed to work with the kit supplied 3 axle trucks. ACF built these RPO cars with short wheel base, 2 axle trucks. The Walters 8'6" passenger car truck was selected as the closest to the prototype. In order to mount these trucks, the under frame was modified in the following manner.
1. Mill off the bolster even with the surounding material.
2. Install a block of styrene for the truck to rest on, that provides for the correct coupler height.
3. Drill the truck mounting screw on center and the correct distance from the car end. To ensure the screw is centered, I coloured the block with some pencil graphite and then used my dividers to scribe two arcs using the moulded holes near the end of the car, on either side of the coupler.
4. The smaller piece of styrene helps to keep the Branchline swinging coupler box wiskers, flat against the under frame, improving the coupler mounting box angle.
5. The openings were filled with sheet styrene from the inside.
The trucks were modified by adding a small washer to fill in the large hole to size it for a 2-56 screw. These were glued using ACC.
The roof was detailed with Custom Finishing Vents, brass bar stock for the drip rails above the doors and a brass wire with mounts for the Gas Lighting Pipe.
In the next installment I will show the final car so Stay tuned.....