Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 32, p. 2. Works number was 33048 in November 1908.
This little tank was like many other Baldwin logging Prairie engines. It was smaller than most and burned wood. As with many such locomotives, the 3 was called on to tackle some steep (6%) grades and very tight, 35-degree curves.
WWLC of Shelton, Wash was established in Shelton in 1899. Eleven years later, the company was recast as Mud Bay Logging, now out of Olympia. Eventually, Mud Bay sold the locomotive to Guy F Atkinson Contracting of Wallace, Calif as their 2904.
2904 was finally scrapped in January 1949.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 3 |
| Locobase ID | 13284 |
| Railroad | Western Washington Logging Company |
| Country | USA |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | 3 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1908 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9 / 2.74 |
| Engine Wheelbase (ft / m) | 24 / 7.32 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.38 |
| Overall Wheelbase (engine & tender) (ft / m) | 24 / 7.32 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 63,000 / 28,576 |
| Engine Weight (lbs / kg) | 86,000 / 39,009 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 86,000 |
| Tender Water Capacity (gals / ML) | 1000 / 3.79 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 35 / 17.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
| Tractive Effort (lbs / kg) | 15,300 / 6939.97 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.12 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 95 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.50 / 3.81 |
| Firebox Area (sq ft / m2) | 71.80 / 6.67 |
| Grate Area (sq ft / m2) | 12.80 / 1.19 |
| Evaporative Heating Surface (sq ft / m2) | 689 / 64.01 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 689 / 64.01 |
| Evaporative Heating Surface/Cylinder Volume | 153.11 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2048 |
| Same as above plus superheater percentage | 2048 |
| Same as above but substitute firebox area for grate area | 11,488 |
| Power L1 | 2733 |
| Power MT | 286.92 |