Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 71, pp. 393+. Works numbers were 56323 in March 1923.
Somewhat larger than usual oil-burning Prairie saddle-tank logging engine that served the SFLC and successor Weyerhaeuser Timber until it was sold in 1948 to Canadian Forest Products as their #112. It remained in service into the 1960s before being put on display at Beaver Cove, British Columbia.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 6 |
| Locobase ID | 15238 |
| Railroad | Snoqualmie Falls Lumber Company |
| Country | USA |
| Whyte | 2-6-2ST |
| Number in Class | 2 |
| Road Numbers | 6 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Baldwin |
| Year | 1923 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9 / 2.74 |
| Engine Wheelbase (ft / m) | 24.42 / 7.44 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
| Overall Wheelbase (engine & tender) (ft / m) | 24.42 / 7.44 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 115,000 / 52,163 |
| Engine Weight (lbs / kg) | 153,000 / 69,400 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2000 / 7.58 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 900 / 3407 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 64 / 32 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 175 / 1210 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 26,288 / 11924.05 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.37 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 130 - 2" / 51 |
| Flues (number - dia) (in / mm) | 20 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 10.42 / 3.18 |
| Firebox Area (sq ft / m2) | 109 / 10.13 |
| Grate Area (sq ft / m2) | 22 / 2.04 |
| Evaporative Heating Surface (sq ft / m2) | 1103 / 102.51 |
| Superheating Surface (sq ft / m2) | 228 / 21.19 |
| Combined Heating Surface (sq ft / m2) | 1331 / 123.70 |
| Evaporative Heating Surface/Cylinder Volume | 156.01 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3850 |
| Same as above plus superheater percentage | 4505 |
| Same as above but substitute firebox area for grate area | 22,318 |
| Power L1 | 6716 |
| Power MT | 386.25 |