The next Resin Car Works kit will be….

UTLX took delivery of 1000 cars built as AC&F lot 89A in 1923. Photo from Frank Hodina Collection.
UTLX took delivery of 1000 cars built as AC&F lot 89A in 1923. Photo from Frank Hodina Collection.

Coming soon, an HO scale UTLX 10,000 gallon, X-3 tank car!

The Resin Car Works minions have been working to produce the next kit in time for the upcoming RPM Chicagoland meet, October 20-22 in Lisle, IL. This is an all new HO scale resin freight car kit that can represent nearly 13,000 prototype tank cars. A limited number of kits will be for sale at RPM Chicagoland. We will accept mail orders after the event.


The Union tank Line introduced the X-3 tank car design in 1917. The upcoming Resin Car Works kit most reflects a series of 10K gallon capacity UTLX X-3 tank cars built in 1923. The prototype cars were numbered as follows:

  • 27825 – 29324 1500 cars built by American Car and Foundry
  • 29325 – 29999 675 cars built by Standard Steel Car Company
  • 36500 – 36999 500 cars built by Cambria Steel


Cars built to this version of the X-3 design had some features in common with most 10k X-3’s and had a particular combination of features.

The underframe was the classic version of the X-3 with built up box section bolsters. The end sills were straight across and the area between the end sills and the bolsters was completely covered with wood decking.


These cars had tanks with 60-inch inside diameter domes and the manway cover was the safety type, secured by a ring of fold down bolts. The safety valves were well spaced away from the car center line on the top of the dome. Many earlier X-3’s had safety valves closer to the centerline and quite a few cars built in earlier batches had 54 inch ID domes. As was common with most X-3’s, these cars were built with only one dome platform and ladder, located on the brake equipment (left) side of the car.

The cars were delivered with U-section Andrews trucks and retained them for most of their service lives. KC style brakes were used until well past World War II when UTLX engaged in a massive project to convert to AB brakes by the required deadline. Heavy brackets were required additions to support the reservoir and triple valve, while the brake cylinder stayed in the same location as with the KC set.

Over the years, UTLX repurposed and renumbered many cars, including cars in these series. Known records do not describe, in detail, which cars were converted, but certainly some of these cars received internal heaters and were renumbered into a 5xxxx range. Others may have been insulated and jacketed with or without heaters and numbered into the 6xxxx range. Nevertheless, 32 years after being constructed, a good fraction of these cars remained in their original configuration.

  • 27825 – 29324 387 cars with this number range remaining in 1955
  • 29325 – 29999 177 cars with this number range remaining in 1955
  • 36500 – 36999 188 cars with this number range remaining in 1955


These details are just a portion of the prototype information Steve Hile has supplied for this Resin Car Works kit. As you can see from the images, production is well underway and instructions are being written. The UTLX tank car kits will be for sale at RPM Chicagoland for $60 each, plus the combined local and state 7% sales tax. AB Brake system parts and decals will be included but modelers will need to supply trucks and couplers. If this X-3 kit version sells well, there is potential for future kits that follow prototype variations.


We are very excited to bring this classic UTLX prototype tank car to HO scale freight car modelers. The parts are cast using all new masters employing an easy to assemble design, and etched metal detail parts. Register now for the upcoming RPM Chicagoland meet, October 20-22 in Lisle, IL. We will be there with these new kits, grain bins, boiler loads, Illinois Central Hopper kits, and decal sets. We look forward to meeting you there!

Questions and comments can be posted below. Please follow the instructions so your comment can be posted. All comments are reviewed and approved before they appear. To subscribe to this blog, enter your info for a comment and check the last box to notify of new posts by email. Share the blog link with other model railroaders.

3 thoughts on “The next Resin Car Works kit will be….

  1. Thanks so much for doing this car. A couple of these will make a nice addition to my roster. Look forward to seeing you at RPM Chicagoland.

  2. Awesome! It’s good to see another tank car model, and one whose prototype was a standard UTLX design.

  3. I think this is a welcome addition to your resin kit lineup and will look forward to the general release as I cannot make it to Lisle this year. Further, it has got to be an easier build than the earlier Sunshine version. Thanks for bringing this kit to the market.

Comments are closed.