I need to pick up the Kadee gauge, although I think in most cases it's not so much the height as the fact that while the truck can hold the coupler, that isn't the type it was designed for. Some have to be adjusted after each uncoupling to be straight again.
In other news.. my first new addition has arrived. Feast your eyes on this titan of the rails!
Here she is with my other, smaller steam locomotive so you can get a good idea of the size. I was actually rather taken aback when I opened the package; I knew it was big but it was even bigger than I thought.
Coming down the tracks under the bridge on a test run.
This particular locomotive is known as the Allegheny type, after the mountains of the same name, which is where the C&O used them as super-heavy coal haulers. The Virginian railroad also used them, calling them Blue Ridge, where it used them, but since they were actually the same locomotive, not just the same wheel arrangement, in my opinion at least the Allegheny appellation takes precedence.
While it technically isn't appropriate for a Rocky Mountain setting, this locomotive will be appropriate for my next layout, years down the road, which will be set in or near Fayette City, PA, where my wife spent her summers with her grandparents.
The Allegheny was a 2-6-6-6 locomotive (2-wheel lead truck, 2 sets of 6 drive wheels each, 6 trailing wheels) and was possibly the highest-rated steam locomotive ever built in terms of sustained horsepower at speed; testing at approximately 6900 horsepower with spikes almost up to 7500 on the dynamometer car. Although her tractive effort at low speed was not as high as other monsters such as the Union Pacific Big Boys or the Y5/Y6 classes of Norfolk and Western (#2156 of which is the strongest-pulling extant steam locomotive today although it is not operational), it is still higher than the vast majority of locomotives, at a little over 110,000 lbs starting tractive force. The other contenders for possibly higher horsepower are the Pennsylvania Railroad's 6-8-6 steam turbine locomotive, which doesn't really count since its not a piston engine (and thus not really an apples-to-apples comparison) or the PRR's Q2 duplex-drive locomotives. Depends on the source. The Alleghenys were also the heaviest locomotives built by engine-only weight (i/e/ not counting the tender) and the reason for the unusual 6-wheel trailing truck was the tremendous firebox of the type.
The model was released by Riverossi, and I wouldn't have been able to afford it except I lucked out in 2 ways: They offered a DCC-ready version that you can put a chip in later, much cheaper than the DCC-equipped version, and I had an offer on the table for a gun I inherited from my dad that I didn't much want. That covered the cost.
The model is really a bit too large for the layout, although it will run, and it did help me identify some bad spots in the track, because its great length caused the drawbar to lift the front of the tender totally off the rails in certain spots, making them obvious. I thought clearance would be a huge problem but so far it's do-able, although the *** end of both engine and tender swing out incredibly on the curves, all of which are at or below the recommended minimum radius. Fortunately, on the model, each of the 4 sets of wheels articulate independently. On a real locomotive, the rear set of drivers would be fixed.