RPO Part 5

Well here it is CN RPO #7810.

I used ScaleCoat CN Olive Green Paint for the body. Tamiya Flat Black for the roof and under frame bits.  The decals are from Microscale, the CNSIG set in particular.

The rivets are a combination of MicroMark and Archer.  There's at least 2500 of them on it!

It sounds like a lot, but it was only three evenings work to put them all on. One evening for the ends and then one for each of the sides, spending about two hours or so per.

The Mail room windows are Tichy Work Car frames, with the sill removed.  Using 0.010" x 0.030" styrene, a frame was added to the top of the outer portion to make these into single hung windows.  The Tichy muttons were not used. Clear styrene representing glass, was slid between the new upper framing and the rabbet in the Tichy window frame.  It would normally receive the muttons.

The Bars are brass wire held in some styrene blocks that I milled grooves into. The grooves space them correctly. The assemblies are then simply glued to the inside of the car.  The mail room windows, got a coat Testors Dullcoat to frost them.

The roof is held on with magnets, a method I will be using again.

I am very happy with how this car came out. It's the first passenger car I have modelled and I can't wait to get started on some more.  It really pushed my modelling skills up a notch. Here is my lessons learned.

Being a more complex build, it forced me to slow down and put more into the planning before each step was taken. 

At a minimum I have new found skills in working with styrene and decal rivets.  I also have a better understanding of passenger car details, and figured out a method to reproduce roof panel lines.  

All of these new skills will make tackling other projects easier while resetting the bar for what I can achieve.  

I even spent some time figuring out the white balance settings on my camera, so I can take better pictures.  Hopefully this has removed a road block, in me submitting a magazine article in the future.

RPO Part 4

Trucks

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 underframe was detailed the best I could figure from my reference photos and a photo supplied by one of the blogs readers, of his Bethlehem Car Works kit of this car.

 
The Sill steps were formed from Details Associates flat stock in a simple wood jig and soldered together.

 
The roof was sanded of all detail including the panel lines, as they were in the wrong location for this car.  The panel lines were recreated, by first priming the roof, then masking off the half of the panels, followed by adding 4 more coats of primer.  The masking tape was removed shortly after the last coat, while the paint was still soft, so that it would not chip.

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.....