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I really wanted a PRR X29b because these were the only 40 foot boxcars to sport the colorful Merchandise Service “MS-1” Paint scheme.  This is the one with a large horizontal aluminum band running the length of the car and bordered top and bottom with two smaller white bands.  A large Keystone inside a Touline Red circle graced the right side, and the words “Merchandise Service” are painted across the aluminum band.  The link below is of the car I modeled

https://jbritton.pennsyrr.com/...ise_car_-34_view.jpg

As a bit of background; The Pennsylvania Railroad converted approximately 4500 X29 Box Cars to Class X29b between 1948 and 1952. The original fleet of X29s had gotten a bit long in the tooth and ripe for modernization.  The body was removed and a new wider and taller car body was installed on the X-29 chassis. The car bodies had a diagonal roof, ten panel sides, and 7’ doors.  The wider box car body was mounted to the narrower X-29 chassis with T-section brackets along the lower sill.  The brackets/narrower lower chassis are distinctive features of the car.  The original chassis retained its 2D-F8 trucks, and kept the same spacing which was wider than that of a standard box car.  This is wider stance gives the cars another distinctive feature.  Both of these need to be included if you are going to model an X29b, in my opinion.

Other reference are the Keystone Modelers #15, October, 2004,  #37, 2006,  #50, Sep 2007, and

To make mine, I simply copied what the Penny did, albeit at 1/48 the size:  I cut off the lower sills of an Atlas X29, and glued the resulting four sections to a slightly shortened (in height) Atlas Trainman 40’ Box car.

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For the X29, I had to thin the thickness of the sills by about a half and mill back the sides of the chassis to get the sills to be recessed inward enough.  I also had to drill new mounting holes in the chassis to mount the Trainman Boxcar. I adapted Kadee Couplers for better realism, durability, and operability, and changed to brass 2D-F8 trucks from American Scale models for the same reasons.

I chose the Trainman Boxcar because of its diagonal roof, correct ends, ten panel sides, and very close proximity to the prototype dimensions.  The exception is the Trainman doors which are 8 feet wide.  So I narrowed them to 7 feet by cutting out two 1/8” wide sections and butt gluing the remains back together. I also had to narrow the door opening with styrene strips and shorten the door guides.    This resulted in some AWOL rivets. These were restored using Archer Rivet decals.

I wanted to keep the sliding doors because I lined the inside walls of the car with scribed and stained wood, and I wanted to show that off:

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The Trainman Boxcar is a good start, but it is not as detailed as I wanted for this project.   So I shaved off all the cast in grab irons, removed the oversized plastic brake hardware, ladders and roof walk, and installed my own.  I used brass grabs from Precision Scale and O Scale America, brass ladders from Precision Scale, and the brake hardware and roof walk from a junker Atlas 1937 AAR Box car.   The T-section brackets were made by soldering brass angles together.

Poling pockets were modified from Precision Scale castings, and the cut levers were scratch built from steel wire. They are held to the bottom of the coupler box with micro magnets.   This facilitates taking the car apart if I have to.

I drew drill templates for the grab iron and ladder mounting posts, printed them out on cardstock and held them in place with removable double sided tape. This allowed me to accurately drill the mounting holes.  Everything is held in place with Canopy Glue, which is strong, dries clear and a bit flexible.   Excess glue can be wiped off with water moistened Q-Tips before it dries with leaving virtually no residue.   If you need to reposition something, applying water with a Q Tip softens the glue enough for easy removal.

I got into a highly entertaining diminishing supply of PRR paint.  I managed to get the car painted without running out, but I WAS worried!  I used a 2:1 mixture of Polyscale Special Oxide Red and Zinc Chromate Primer to get reasonably close to PRR Freight Car Red of the 1948 era

I painted the car with the grab irons mounted, but painted the roofwalk, ladders, and brake hardware separately and unattached.   This prevented paint build up and shadowing around and under these parts.   It also allowed me to get that long decal stripe under the ladders

I used Microscale 48-554 decals.  After decaling I sprayed everything (including the unattached parts) with Dull Cote. Speaking of decaling, I met my Modeling Waterloo trying to decorate those doors. The tale is way too painful to recount here. Suffice it to say I never got the decals to snuggle down into the door corrugations, not to mention maintain some semblance of their full width.  This despite going through two sets.  And I have a lot of experience with decals of all stripes and widths!

So I ended up painting the door stripes.   (Don’t look TOO close!).

Lastly I attached the roofwalk, ladders, and brake hardware with Canopy Glue

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The side view really shows off the wide stance of the trucks:

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There was nothing special about these cars were used.  They were hauled around in freights like any other PRR Boxcar.  As is this one on my layout:

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As with all such projects it took a whole lot longer than I originally thought it would.  As a result, I expect some manufacturer will now offer a PRR X29b.

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Last edited by John Sethian
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Very nice! But how does your car differ from the Weaver models Merchandise Service painted PS1 boxcars?

Thanks for the kind words

My car is a fairly accurate model of a real class of Boxcar built and used on the Pennsy.   The Weaver model is not based on any Pennsy Boxcar.  The Pennsy never had any PS-1 Boxcars.  (CORRECTED BELOW)

Of course, whether that is important for your modeling is an entirely different matter!

Last edited by John Sethian

Hello John, I hesitate to post this response knowing that you probably forgotten more about the Pennsy than I will ever know but I believe the PRR did have some PS-1's. In class X48 purchased in Feb. 1954.

Would like to know your thoughts on this if I am mistaken.

By the way, great post and a great looking car. Thanks for sharing.



russ

Hello John, I hesitate to post this response knowing that you probably forgotten more about the Pennsy than I will ever know but I believe the PRR did have some PS-1's. In class X48 purchased in Feb. 1954.

Would like to know your thoughts on this if I am mistaken.

By the way, great post and a great looking car. Thanks for sharing.



russ

Russ

You are indeed correct! The Pennsy did have twenty PS-1 class boxcars.  But I do know that none were ever painted in that Merchandise Service Scheme.    Nor did they look as cool.

Very nice! But how does your car differ from the Weaver models Merchandise Service painted PS1 boxcars?

The differences are many. The PRR X29b was riveted construction, while the PS-1 was welded. Also, the X29b had 4/3 dreadnought ends while the PS-1 had "PS-1 ends" which were a sort of improved dreadnought. Some PS-1 boxcars had "sheet ends". There were many odd variations of PS-1 boxcars though implemented by other railroads.

Chris

Thanks!

For the doors,  I wicked liquid styrene glue to the front seams first. Hold the door dead flat between two 1-2-3 blocks.  Then flipped the door over and added .020" bracing across the gaps.

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Again I used liquid styrene glue and the weights.  Some Tamiya Putty was used to fix any open gaps. They were sanded smooth.  This cycle had to be repeated several times

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One of the doors buckled a bit at the gaps, I held it under a heat lamp for a few minutes and coaxed it straight. More glue kept it that way

The door opening was narrowed with styrene strips, braced to the back, and lots of putty applications to fill and level and gaps and mismatches:

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Last edited by John Sethian

Your post reminded me that I have two 50' versions; probably wood kits built by two different builders in the 1950s based on the appearance. There are some subtle differences between them. Both are decaled so a 50' set must have been available at one time. I like them but they are not really all that special to me. Note that I know nothing else about these two cars other than I now own them.

Hello John, why do you think the PRR had this wider wheel set up. Was this common on other cars, other Roads?

The original chassis retained its 2D-F8 trucks, and kept the same spacing which was wider than that of a standard box car.  This is wider stance gives the cars another distinctive feature.  Both of these need to be included if you are going to model an X29b, in my opinion.



Thanks for your reply....russ

Hello John, why do you think the PRR had this wider wheel set up. Was this common on other cars, other Roads?

The original chassis retained its 2D-F8 trucks, and kept the same spacing which was wider than that of a standard box car.  This is wider stance gives the cars another distinctive feature.  Both of these need to be included if you are going to model an X29b, in my opinion.



Thanks for your reply....russ

Russ

I have no idea, but my guess is it would have to be the way the underframe is designed, which in turn determines where the bolsters go.   The X29 s were 32' 3" between truck centers.  The X35 were 30' 8 1/2"  The X31 30' 8 1/8" The 1937 AAR box car was 30' 8 1/2" and the PS-1 was 30' 8".   

John

Regarding the longer wheelbase:  I am not a SPF, so will gladly be corrected on this:

I was under the impression that the X29 was designed ab initio for express / bulk mail service, as the initial '24 build received the four digit numbers;  hence, the longer truck wb for greater stability at speed.  They just kept building them for more general service even though that wasn't the best course of action because, well, that was The Pennsy Way.

Best, SZ

@Purplepapa posted:

Dave, Here is my PRR merchandise car built years ago from a Locomotive Workshop kit. No where near the quality of  John’s work, but it filled my need for a boxcar to represent PRR on my layout.

Very nice. Mine are a bit more "road weary" and appear to be older the LWS release. Either that or they just led a hard life before I got them. I do wonder if LWS got the "tooling" from an older maker and re-released them with maybe some upgrades. Anyway, the cars were packed away shortly after I got them and, as usual, no photos were taken of them.

Last edited by PRRMP54

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