Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 260. See also Locobase 14080 for a short history of the SAC. Works number was 41163 in February 1914.
The differences between the recently delivered 1 (Locobase 14080) and the 2 shown here suggest an adjustment in expectations in favor of much heavier traffic over much tighter alignments. A special note in the specs states that the travel of the two auxiliary trucks needed to be changed to accommodate 40-degree curves (i.e., with radii as tight as 146 feet/44.5 metres). As the extra driven axle implies, everything else was bigger and heavier as well, although the grate grew only a little and thus showed a high ratio between heating surface area and the grate.
The 2 later went to the Deer Park Lumber Company of Deer Park, Wash, then to the West Fork Logging Company of Tacoma. West Fork's operations, owned by T J Murray, were sold in 1943 to the St Regis Paper Company. This transaction included the 2, which served St Regis until it was scrapped in March 1952.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 14081 |
| Railroad | Southern Aluminum Company |
| Country | USA |
| Whyte | 2-6-2ST |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1914 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 26.50 / 8.08 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.38 |
| Overall Wheelbase (engine & tender) (ft / m) | 26.50 / 8.08 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 110,000 / 49,895 |
| Engine Weight (lbs / kg) | 148,000 / 67,132 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2500 / 9.47 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 61 / 30.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 |
| Tractive Effort (lbs / kg) | 24,118 / 10939.75 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.56 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 211 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.50 / 4.11 |
| Firebox Area (sq ft / m2) | 105 / 9.75 |
| Grate Area (sq ft / m2) | 15.80 / 1.47 |
| Evaporative Heating Surface (sq ft / m2) | 1587 / 147.44 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1587 / 147.44 |
| Evaporative Heating Surface/Cylinder Volume | 251.51 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2844 |
| Same as above plus superheater percentage | 2844 |
| Same as above but substitute firebox area for grate area | 18,900 |
| Power L1 | 4418 |
| Power MT | 265.64 |