Uintah Railway 51 was the second and final 2-6-6-2T articulated built for the Uintah. She was delivered to Mack, Colorado aboard Lehigh Valley flatcar 9952, the same car that 50 had been delivered on two years prior. Unloading was accomplished with help from Uintah 12, a former F&CC 2-8-0, and D&RGW crane 026.
51 was built to the same design as 50, but with improvements that made it better suited for work on the Uintah. As delivered, 51 was able to run on Morro Castle (a section of track with a 7.5% grade and 87 foot diameter curves), which 50 was unable to when it was built. 50 derailed on all of its tests on Morro Castle. 51, though, didn't thanks to a large block of concrete on the front engine, and an improved steam delivery system. Other changes to 51 included a larger coal bunker, and relocated air compressors.
When the Uintah was abandoned, 50 and 51 were sold to the Sumpter Valley Railroad of Oregon, leaving on board Lehigh Valley flatcar 9952. On the Sumpter Valley, they were renumbered to 250 and 251. They also lost their sidetanks, and aquired the tenders from a pair of Alco 2-8-2s that were requisitioned by the US Army for the White Pass & Yukon. After the Sumpter Valley job, both travelled again, this time to International Railways of Central America in Guatemala. They remained there until 1970, when they were both cut up. The tenders survived, and currently reside on the Sumpter Valley, behind a pair of Alco 2-8-2s.
Brass models have been imported by various importers in various scales over the years. These are the prototypes for the Mantua 2-6-6-2/2-6-6-2T, still available from Model Power. LGB has also made models of these in G scale.
Wheel arrangment 2-6-6-2T
Builder Baldwin
Bulder's Number 60470
Built April 1928
Driver size 42 inch
Cylinders 15 x 22 inch
Gauge 3 foot
Tractive Effort 42,100 lbs
Weight 244,400 lbs
Notes: Thanks to slugsmasher (Rich Blake) for rendering the cab and RPearson (Robert Pearson) for making the cabin script.