Saturday, May 9, 2020

TP&W RBL Cars

The TP&W owned/leased a number of insulated, double-plug-door boxcars. The "RBL" classification means that they are bunkerless refrigerator cars with interior load restraints. Below are links to a couple of  prototype photos:

TP&W 50563 (page 18 of September 1996 Model Railroading)
TP&W 50588

Circa 2000 Atlas produced ready-to-run models of these cars in the 1970s-era speed lettering scheme, and more recently both Athearn and ScaleTrains.com have also offered TP&W versions of these cars. I typically don't purchase ready-to-run freight cars because I like to assemble kits, but last year I bought one of the Atlas cars at a train show for $14. The Atlas models typically sell for > $20, which is more than I like to pay for freight cars, so this seemed like a bargain.

The Atlas model of TP&W 50575 is now part of my fleet.
Detail-wise, the Atlas model appears very accurate compared to the photo of TP&W 50563 linked above. This is both good and bad; good because it's a nice model but bad in a way because I have an Accurail model of a similar car that doesn't quite measure up in comparison. I'm not fastidious about freight car detailing, but I decided to make a few minor improvements to the Accurail car. I wanted to preserve its factory paint and lettering as much as possible, so my goal here was to make readily apparent modifications that didn't require major surgery.




I purchased this Accurail double-plug-door kit new in 2017. At the time I was planning for a 1950s-era IT layout, but I bought it anyway. This paint scheme is from the early 1980s, so, yes, I'm stretching the 1970s era a bit. The lettering closely matches the prototype photo of #50588 linked above, but the type of car is not an exact match. To make the Accurail car look more like the Atlas car, I decided to remove the running board and add cushion coupler pockets. I passed on things like lowering the brake wheel and reducing the height of the ladders that would have required carving on the car sides and ends. I'll have to repaint the roof after removing the running board, but, as long as I'm careful, that won't affect the lettering.

Walthers started selling these cushion coupler pockets before Accurail even existed as a company, but they will work just fine.

The stock coupler box needs to be shortened so that the "tongs" on the brown Walthers coupler box wrap around the post in the Accurail coupler box.

I sawed off the Accurail coupler box flush with the end of the floor and also cut down the sides of the box even with the leading edge of the post. 

For the Walthers coupler box to sit at the correct height, some material has to be removed from the top of the Accurail coupler box. I found it too difficult and awkward to carve material from this area, so I decided to cut a notch in the floor. As shown on this top view of the floor, I made two saw cuts perpendicular to the end of the car and scribed a line connecting them.


I used a pair of small needle-nose pliers to snap off the plastic along the scribed line and create the notch.


Now the Walthers coupler box fits as intended.

I want the coupler box cover to be screw-mounted, so I drilled out the boss in the Walthers coupler box with a #50 drill. I drilled two #43 clearance holes in the box lid: one for the screw that holds the Walthers coupler box together (right) and the other (left) so I can use the coupler screw that came with the car to secure the Walthers box to the car.

Here's the completed underframe with the Walthers coupler boxes painted black and mounted to the car.

With the underframe modifications complete, I moved on to the running board. This inverted view of the car shows the six pins that hold the running board in place by friction. I pushed from below on each of the six pins until I could grasp the running board with my fingers and remove it from the car.   
With the running board removed, there are now two slots at opposite corners of the car and four holes down the car centerline. These need to be filled, and there are also mounting brackets at both ends at at two corners that need to be carved off.

I filled the slots with scraps of 0.060" styrene. I cut the pieces of styrene slightly larger than the slots and then applied styrene cement (my favorite is Microscale Micro Weld) to both the inside of the slot and the piece of styrene. After waiting a minute for the solvent to soften both parts, I jammed the styrene into the slot. The goal of doing it this way was to get a very flush-fitting plug so that I didn't have gaps to fill later with putty.

Here's the car with all of the plugs installed.

I carefully trimmed off the excess plastic in thin slices and then carved, filed, and sanded the plugs as necessary to make them either flush with the rest of the roof or so they blended in with the ribs along the roof centerline. 

Here's a closeup of one of the plugs along the roof ribs. Each one of these took a fair amount of carving, filing, and patience.

Next, I repainted the roof silver. I opted to brush-paint the roof with Model Master Acryl Flat Aluminum instead of spraying it because I didn't think I could do a good enough masking job on the car sides and ends. This paint did not cover well and it took many thin coats to produce the result you see here. 

After painting the roof, I installed the second door on each side. Both doors were a bit too wide for the openings, so I had to trim them down to fit. It's not an optical illusion or lackluster photography: the door on the right is a slightly different shade of red than the rest of the car.

The finished car. Prior to installing the underframe, I slightly notched the bottom centers of the car ends so they would clear the new coupler boxes, which are slightly taller than the originals. This project took longer than I thought it would, but I think the results were worth the effort.



Tuesday, May 5, 2020

Motive Power Plan

The small layout I'm building won't require many locomotives, so I'm planning to just model a few of my favorites. I've settled on the following 6, in order of likely completion (current status of each in parentheses):
The TP&W was notable for the diversity of its diesel locomotive roster; for example, in 1975 the railroad owned 21 locomotives of 10 different models. So it's entirely appropriate for me to pick one each of six different locomotive models for my roster. A reader with some knowledge of the TP&W's motive power will probably notice that one model is conspicuously absent from my list: a GP38-2. I'm personally not that fond of GP38-2s even though they were the dominant locomotive in the TP&W's fleet in the last few years prior to the Santa Fe merger. Perhaps I'll change my mind later, but in the meantime I will focus on the units I like the most.