I've actually been working on other things besides flat cars, or at least working on working on other things such as getting prepped for installing the layout lighting. (It's gotten more complicated than anticipated. Which I should have anticipated).
But I have found a few other prototypes that would be easy to make from the Tichy car.
NYO&W built fifteen 39' foot, 40-ton flat cars in 1911, which looks like the deeper center sill.
Here's an obscure one - LOP&G RR - the Live Oak, Perry & Gulf Railroad received 30-ton flat cars in 1914. It has the shallower center sill.
The US Navy also received some 30-ton flat cars in 1914, and were 35'6" over the end sills.
What I find interesting is that these were built in the same year, both by Magor, but the Navy cars had straight center sills of 15" steel channel (the side sills were 12" channel) and the LOP&G car had 10" channel side sills with a fishbelly underframe.
The Seaboard F-5 46000-46931 class is another one, I don't have a photo available for that class, though.
There were a whole bunch of truss rod flat cars that could also be done that I haven't really explored as none would be in service in my era.
These are also 50'-52' flat cars that resemble extended versions of the Tichy model. Jason Hill has some photos of a couple of kitbashes he's been working on with for SP 50'-ish flat cars, including the F-50-10,-11, -12 and -13 classes, and the F-50-14. He hasn't covered how he made the models yet, but his modeling is excellent so I'll be keeping an eye on that as another potential project.
More Flat Car Decks
Weathering flat car decks has turned out to be something very easy to do with 5-10 minutes of free time here or there. So I've continued to experiment with different mediums. The techniques are pretty much the same as what I've been doing, although the order often varies. In many cases this is because I get to a point, don't like what I see yet, so just keep adding more layers.
I did several Proto 2000 50-ton AAR Flat Cars:
I've also weathered a laser cut wood deck. This is for a Chad Boas kit for an L&N flat car. This kit consists only of the main casting, the laser cut deck, and a piece of paper with few sentences on how to build it, in this case with Tichy stake pockets. I'm not aware of any decals for these, however. In the many levels of resin kits available, this is as basic as it gets. Having said that, they are very workable castings for prototypes you otherwise cannot get. So I have quite a few of Chad's castings and would recommend them.
I used the scalpel to rough things up and dig out some chunks, and started with washes of the Tamiya Panel Line Accent Color. The basic process is really one of staining rather than painting. I did also use the Vallejo Black Wash (75.518). I found that sandwiching the deck between two kit boxes while wet was sufficient to keep it flat.
Here's the deck in progress between the two original tests I did to compare: