Re: Throwback Thursday: Ambroid PRR Class R7 Reefer


The Cannonball X23 was a pot metal Red Ball car converted to injection molding.  I built one many years ago.  The resin version was the most difficult kit  I ever did.  Usually I work alone, but this kit required the metal forming skill of Randy Anderson, the casting skill of Tom Madden, and the fine scale work of Byron Rose, which I assembled into sides and ends.  Byron also did a section of one of the roofs.  It is feasible these days to do an excellent 3d printed model.  I’m surprised no one has attempted it.  The only difficult part would be the fragility of the ladders.  From what I’ve seen of some recent tank cars, some manufacturers no longer consider this a problem.– Al Westerfield


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From: Richard Townsend via Groups.Io
Sent: Thursday, March 14, 2019 5:16 PM
Subject: Re: [RealSTMFC] Throwback Thursday: Ambroid PRR Class R7 Reefer


Thanks, Ben, I had forgotten about that model. Unfortunately, as I my model railroad is set in Colorado, and as I doubt any PRR stock cars made it to Colorado, I have no use for that car, with or without sound. In a way you help me make my point. I'll amend my closing statement from earlier: If we can have Caswell gons and K7 stock cars, why not R7s?

Richard Townsend

Lincoln City, OR


-----Original Message-----
From: Benjamin Hom <b.hom@...>
To: main <>
Sent: Thu, Mar 14, 2019 3:17 am
Subject: Re: [RealSTMFC] Throwback Thursday: Ambroid PRR Class R7 Reefer

Richard Townsend wrote:
"I am amazed that there isn't a high-quality injection molded model of this car and its relatives (i.e. the X23). I am aware of the terrific Westerfield resin kits and the Cannonball plastic kits, but neither is what I am talking about. One lacks quality and the other is not plastic.If we can have Caswell gons, why not R7s?"

There is one high quality HO scale X23 family model on the market - the Broadway Limited Class K7A stock car, which were rebuilt from Class X24 automobile boxcars.  The sound module is goofy and the model needs some work to correct the trucks, but that problem is definitely fixable and documented by Bruce Smith in an early issue of The Keystone Modeler.

Ben Hom


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