Southern Railway Postwar AAR Box Cars - an extremely interesting quirk

 

As an expansion from my previous post, the Southern purchased 1,000 Postwar design AAR box cars from Pullman-Standard between 1946-1947, Lot 5855. The most visible details were 8-foot door openings, not unheard of at the time, but not all that common, either, and their Superior 7-panel doors or Improved Youngstown doors with 6-6-5 arrangement (top to bottom.) Other details included prominent push pole pockets and specialties as noted in the table below.

Series Start	Series End	Side sheathing	Subsidiary	Hand Brake	Running Board	Doors
330000	330499	Irregular	NO&NE	Miner	Morton Open Grip	Youngstown
23000	23241	Regular	Southern	Universal	Morton Open Grip	Youngstown
23242	23268	Regular	Southern	Universal	Morton Open Grip	Superior
23269	23299	Regular	Southern	Universal	Morton Open Grip	Youngstown
23300	23472	Regular	Southern	Universal	Morton Open Grip	Superior
23473	23486	Regular	Southern	Universal	Morton Open Grip	Youngstown
262000	262049	Regular	CNO&TP	Universal	Morton Open Grip	Youngstown
307025	307027	Regular	AGS	Universal	Morton Open Grip	Youngstown

One interesting quirk that I noticed in photos years ago, but hadn't researched thoroughly was that 500 cars had a highly unusual, if not unique arrangement of side structural posts (zee bars where the side sheathing panels overlapped and were riveted.) On 500 cars, the structural posts were marginally closer together (3'0-1/2" vs. 3'1-7/8" on a standard arrangement) and an additional structural member was added extremely close to the adjacent end, necessitating an additional row of rivets close to the ends and corner posts. I have not seen this feature on any other cars and have no documentation as to why it was done. The only reason for this arrangement that makes sense to me is that four of the panels on either side of the door were generated from tooling for a car with a 7-foot door opening (the edges closest to the car ends were crimped to overlap the next panel) and then the last panel on each side, adjacent to the ends, which did not have a crimp (it was just sheet/plate steel) was made wide enough to span the leftover distance. A plausible (yet thoroughly speculative) reason is availability of such side sheathing panels when the first cars were built beginning in 1946; maybe panels for 7-foot door opening cars were already being cut and pressed for the Nickel Plate order, but presses for 8-foot door opening sides were not tooled yet. This rationale is a weak explanation for the presence of the zee bar structural member 6-7/8" from the corner post. Nonetheless, it results in an extremely cool feature if you're a freight car geek, like I am. Click on the photo to see a larger view

This photo of Southern 23000 illustrates another interesting detail that I have only found on this car. It was equipped with roping staples at each bolster. I am unsure if there were other cars wit hthese, but it is noteworthy. I could find no reference to it in the Southern book*.

There is (was) an incredible reference for Southern box cars, Southern Railway Equipment Drawings and Photographs, Volume 1, Book 1, 40' Steel Box Cars, George Eichelberger, Southern Railway Historical Association, 2004

Good times, great oldies... Forty-foot Postwar AAR Box Cars

 

This Georgia car is a decorated Branchline kit, save for a Southwest Scale Improved Youngstown doors with 6-6-5 (top to bottom) arrangement of corrugations and matching paint on the door and Ksto ASF A-3 trucks

Way back in the early times of Speedwitch over 20 years ago, I had offered several sets of parts to replicate the various details and nuances of forty-foot Postwar AAR box cars, using the fine Branchline kits as fodder. They were a fun way to model the distinctive details of these cars. Anyway, I stumbled across a tote of parts in the barn yesterday and it had various bits for the Santa Fe's Bx-44 cars, with their distinctive interim Improved Youngstown doors. That also got me thinking about the cars in general. What a fun ride they were. Here are some pics of those cars with notes about some of the details.

The Santa Fe's 500 Bx-44 box cars were distinct for their interim Improved Youngstown doors, with wide panel overlaps. The cars also had Pullman-Standard "notched" tabs below the side sill and a flattened area on the end corrugation where the hand brake housing was mounted.

The Wabash continued their use of full-length side sill support sections that spanned the bolsters, as also added to earlier Modified 1937 AAR box cars. They also used pressure head cylinders with integral lever brackets, Superior seven panel doors, and Wine style ladders, among other specialties.

The Southern and subsidiaries purchased postwar AAR box cars with eight-foot door openings with either Superior seven-panel doors (shown) or Improved Youngstown doors with the 6-6-5 corrugation arrangement as well as Pullman-Standard "notched" tabs below the side sill. PS - the washout on the Southern medallion is what happens when you accidentally use solvent cement as a decal softener!

The Pittsburgh & West Virginia cars had Improved Dreadnaught ends with an "abbreviated" (shortened) top main rib and prewar-style Youngstown doors plus Wine-style ladders. The repainted version above was modeled by the late Paul Lyons and the model below shows an as-built car

The Erie purchased 1,200 cars that also had an abbreviated top rib on the ends and prewar-style Youngstown doors, plus Universal Rotary Type brake adjusters and a variety of hand brakes, trucks and running boards

The Louisville & Nashville has distinctive cars with three door styles (prewar Youngstown, 6-6-5 Improved Youngstown and seven-panel Superior) and ends without any lower corner additions below the end sills

These were a lot of fun to create and are highly illustrative of how different "standard" cars can be

J'accuse!

Okay... this post is nothing so serious as the original "J'accuse!" when Émile Zola penned a letter about the French government's role in/handling of the Alfred Dreyfus affair (google if you're curious.) At any rate, my accusation is towards Model Railroader ("MR") and is not nearly so weighty, but it's been gnawing at me for awhile so I thought I would get it off my chest. Like many of you out there, I came of age in the era when Model Railroader was the publication in the hobby. However, by the late 80s and into the 90s, Railroad Model Craftsman was publishing some excellent modeling content,* Mainline Modeler was well on its way to becoming the serious mainstream publication and Model Railroading and Railmodel Journal also had a stable of talented modelers writing for them, with the last three publishing longer form detailed modeling articles with greater photo coverage than MR. 

Two things occurred over the intervening decades: the internet and social media became outlets for serious material through blogs and other avenues for sharing content and MR chose to become mainstream to the point of publishing banal, armchair content. If there is a specific moment when MR tacked in a different direction, I trace it to when Andy Sperandeo was replaced as editor.

Since Andy's departure, MR has, actively or passively, become a publication of its mantra that "Model Railroading is Fun" and not much more, morphing into a rather vanilla shell of its former self. Gone are the days of multiple scale drawings in an issue, scratchbuilding and kitbashing taking center stage, and regular articles with detailed coverage of the skills required for serious modeling. I am not saying that these things don't appear any longer in the pages of MR, but they are far less frequent compared to more "fluffy" content or "reviews" of RTR products. Interestingly, the page count has had a corresponding decrease, much of that due to fewer ads, but also a lot less content like that noted above.

For me and many others, the act of reading publications devoted to our passions is inspirational and aspirational. We don't crave to read about the mundane and easily achieved; we want to be dazzled and challenged by content that throws down a gauntlet to learn and practice new and difficult techniques and skills. Even if you do not actively pursue all of these things, the mental thought process when reading about them is far more engaging than a series about yet another project layout. Sadly, since Andy's departure, there has been too little of the former and too much material that looks pretty from a presentation perspective, but does little to nothing to stimulate the modeling juices. While I don't have visibility into the business affairs of MR, I would bet that publishing more aspirational content would help stem what I am sure is a decline in the hobby's flagship title, although that moniker may have already shifted to Railroad Model Craftsman.

I type this not to be hypercritical or a troll. I do so because I ardently believe that content that is stimulating and challenging can drive sales and subscriptions. However, I doubt that the powers at MR and Firecrown are tuned in to what I say, but I care enough and thought about it enough to put these thoughts down in digital form. I want to see MR succeed. We all benefit if MR is strong. Comments and opinions pro and con are always welcome via the form below.

Postscript... I do occasionally buy MR and did buy the recent June 2026 issue with a cover photo from Jim Dufour's stunning B&M layout. There is some promising content, including the scratchbuilding articles by Dean Deis and Nelson Moyer, the bridge building piece by some of the staff and Mont Switzer's kitbash of an ex-kitchen troop car turned caboose. However, the most recent issue of RMC that I have, May 2026, had just as much modeling content plus a prototype profile with drawings of a Pullman-Standard 4650 cu. ft. covered hopper. This issue is standard content for RMC while for MR this much modeling fodder was more than normal.

*ironically enough under the leadership of Tony Koester, who eventually moved to Kalmbach (now Firecrown,) publisher of MR

Pennsylvania Railroad X43A AAR-design Welded Box Cars and Model Underframe

 

The Pennsy received 1,500 X43A welded box cars based upon the AAR design of the late 40s/early 50s (car nos. 602000-603499.) The "standard" design of the era primarily used riveting for construction, but these cars, built by American Car & Foundry, employed welding for the sides and underframe. Each side had 12 panels, compared to the typical 10 of most riveted cars. Other specialties included R+3/4 Improved Dreadnaught ends, Murphy diagonal panel roofs, postwar Youngstown corrugated steel doors, Ajax power hand brakes, Apex Tri-Lok running boards, and National C-1 50-ton trucks.

As delivered, the cars were painted in the familiar circle keystone scheme, with one highly unusual twist, at least by Pennsy standards: the roofs were painted/coated with black car cement. In mid-1954, the PRR briefly adopted the "Calendar" scheme, and at least one (and likely more) of the X43A class was repainted in this scheme, PRR 603116 shown above. 

By mid-1954 to the late 50s, the scheme was changed to the "shadow Keystone" scheme shown above, including its various nuances and iterations over the remainder of the 50s.

By the 60s, the "plain Keystone" scheme and its iterations were used until the Penn Central merger, as illustrated by PRR 602469. Note that there were other changes as well, including removal of the running boards, shortened ladders on the A end (and B end on some, if not all, cars) and strengthening of the side sill support and lower door post/side/side sill support junction, as shown above.

Some of the X43A class made it into the fleets of other roads. Western Maryland 461213 is an ex-PRR car with reinforced side sill support and lower door post/side/side sill support junction, albeit different than the PRR solution. Also note that the hand brake (and ladders) on the B end remained at the original high-mounted location.

B&O 463529 is another example of a secondhand X43A.

The kits for these can be found at the Speedwitch Models page. All versions of PRR lettering, Penn Central, Western Maryland, and Baltimore & Ohio are planned. The welded underframe features many of the nuances of the prototype, including the non-linear shape of the flanges of the crossbearers and crossties (if you look, you will notice that the flanges are not straight-edged, but rather wider and narrower at various points, as on the prototype,) the "perforated" bottom crossbearer cover plates (the perforations allowed the surfaces inside the "cutouts" to be welded, too, increasing the surface area of the welded surfaces,) Wright pipe hanger, the stringers that were riveted and welded on those closest to the center sills and welded only on the outer stringers, the accurate "teardrop" openings in the bolster cover plates, plus the bulb angle side sill supports and channel bolster tabs, shaped exactly as on the prototype. The brake arrangement also accurately replicates the prototype, down to the welded "grab iron" rod hangers and complex dead lever assembly.

There will be a follow-on post showing the finished model coming in the next week (or so.)

PFE R-40-25 Completed

 

I recently completed the final weathering and detailing on the PFE R-40-25 pilot model for the Speedwitch parts set [previous post linked here.] I am extremely pleased with the outcome. The details turned out almost exactly as I envisioned, particularly the hatch cover supports, the ladders, and the underframe. I doubt I will ever look at another car with Equipco hatch covers the same way again. It's fun to see the details "pop" under some weathering.

Regarding weathering, I used a variety of dilute washes, beginning with Tamiya Brown Panel Line Accent Color on the roof, panel lines on the sides, and overall on the ends and underframe. I added Tamiya black paint to the fan shaft detail on the car sides and then removed most of it with a cotton swab. I used mineral spirits to slightly dilute the panel line wash on the sides. I sealed everything with a flat coat and added washes of artists' oils, including a dilute grey mix overall and a few heavier light grey streaks on the sides, especially under the hatch areas, as well as on the ends to simulate spray from the wheels of adjacent cars. I applied another flat coat and then used Bragdon powders on the sides (a light grey) and PanPastel Paynes grey on the roof, ends, and underframe. 

The chalk marks are from National Scale Car

J-B Weld as a Filler

 

One of the things that has sometimes stymied me is the right filler for resin. Putty-type fillers like the old green Squadron stuff, 3M for auto body work, the tube fillers from Tamiya and the like, as well as the "liquid" fillers like Mr. Surfacer and Tamiya Surface Primer (which acts as a liquid putty directly from the jar) all flake off of resin because they are not able to bond with the surface like they can with styrene. I have used ACC/super glue as a filler in the past, but you have to sand it at just the right time... too soon and it can "ball up" and come off as you sand and too late and it is harder than the resin, meaning that the materials are removed at different rates by sandpaper, leading to surface defects of a different order, which is what you are trying to eliminate by filling and sanding.

I recently mixed up some of the J-B Weld (pictured above) to use as a bonding agent. It mixes like a two-part epoxy, where you stir equal amounts and then apply. While it worked for the bonding task, I also noticed that the dried leftover material (I mixed it in the underside of the bottle cap) was hard enough to sand, but not rock hard after 24 hours. When the right opportunity presented itself, I mixed up a little bit and applied some to a resin surface that needed a little touchup. It worked exactly as intended. It is now in the arsenal of filling and sanding solutions and is a good choice for resin.

Pacific Fruit Express R-40-23/-25/-26 from NERPM

 

Mostly completed weathered R-40-25

I presented a discussion about the PFE's 10,000 strong postwar reefers in the R-40-23, -25, and -26 classes at the recent NERPM. The presentation can be accessed via the Speedwitch Files page.