Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 208. Works number was 33958 in October 1909.
The S-A had only been incorporated in March 1909 and this Consolidation arrived very shortly afterward. Its remit was to scale the 3.4% grades and very tight 35-degree curves (equates to radii of 166 feet or 51 metres). A few months later, the S-A bought a very similar engine from the Moctezuma Copper Company; see Locobase 13231.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 14075 |
| Railroad | Shannon-Arizona |
| Country | USA |
| Whyte | 2-8-0 |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1909 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11 / 3.35 |
| Engine Wheelbase (ft / m) | 18.33 / 5.59 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.60 |
| Overall Wheelbase (engine & tender) (ft / m) | 44.46 / 13.55 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 101,000 / 45,813 |
| Engine Weight (lbs / kg) | 112,000 / 50,802 |
| Tender Loaded Weight (lbs / kg) | 60,000 / 27,216 |
| Total Engine and Tender Weight (lbs / kg) | 172,000 / 78,018 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1200 / 4542 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 42 / 21 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 38 / 965 |
| Boiler Pressure (psi / kPa) | 170 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 20" / 457x508 |
| Tractive Effort (lbs / kg) | 24,641 / 11176.98 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.10 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 202 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 15.58 / 4.75 |
| Firebox Area (sq ft / m2) | 81.50 / 7.57 |
| Grate Area (sq ft / m2) | 18.80 / 1.75 |
| Evaporative Heating Surface (sq ft / m2) | 1720 / 159.85 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1720 / 159.85 |
| Evaporative Heating Surface/Cylinder Volume | 292.02 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3196 |
| Same as above plus superheater percentage | 3196 |
| Same as above but substitute firebox area for grate area | 13,855 |
| Power L1 | 3889 |
| Power MT | 339.56 |