This was the only locomotive in the TRRA's 1939 diagram book with any auxiliary axles; everything else was a switcher. In the same year, Baldwin supplied a nearly identical locomotive to the Maryland & Pennsylvania (see Locobase 6022). According to the website of the TRRA's Historical and Technical Society, Inc (http://trra-hts.railfan.net/, accessed 14 December 2005), the TRRA was formed in 1889 to coordinate terminal operations around the St Louis Union Station and environs. It "quickly" became the largest freight and passenger terminal operation in the world.
| Specifications | |
|---|---|
| Class | K |
| Locobase ID | 7309 |
| Railroad | Terminal Railroad Assn of St Louis |
| Whyte | 2-6-0 |
| Road Numbers | 1 |
| Gauge | Std |
| Builder | Burnham, Williams & Co |
| Year | 1895 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase | 11' |
| Engine Wheelbase | 18.50' |
| Ratio of driving wheelbase to overall engine wheebase | 0.59 |
| Overall Wheelbase (engine & tender) | 45.33' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 76000 lbs |
| Engine Weight | 89000 lbs |
| Tender Light Weight | 66000 lbs |
| Total Engine and Tender Weight | 155000 lbs |
| Tender Water Capacity | 4000 gals |
| Tender Fuel Capacity (oil/coal) | 6 tons |
| Minimum weight per yard of rail on which locomotive could run | 42.22 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 56" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 17" x 26" |
| Tractive Effort | 20529 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.70 |
| Heating Ability | |
| Firebox Area | 123 sq. ft |
| Grate Area | 20.20 sq. ft |
| Evaporative Heating Surface | 1266 |
| Superheating Surface | |
| Combined Heating Surface | 1266 |
| Evaporative Heating Surface/Cylinder Volume | 185.35 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3636 |
| Same as above plus superheater percentage | 3636 |
| Same as above but substitute firebox area for grate area | 22140 |
| Power L1 | 4626.48 |
| Power MT | 402.62 |
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