Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 71, pp. 408+ . Works number was 57688 in March 1924.
The Esary Timber Company, Ltd was chartered in British Columbia , but reorganized as Thomsen & Clark in 1917. Based in Deep Bay, the logger bought this standard oil-burning Prairie saddle tank in 1922 and operated it for years. Later sold to Alberni Pacific Lumber Company, the engine ended its days running for the MacMillan Bloedel company.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 15240 |
| Railroad | Thomsen & Clark Timber Company |
| Country | Canada |
| Whyte | 2-6-2ST |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1924 |
| Valve Gear | Walschaert |
| 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) | 92,000 / 41,731 |
| Engine Weight (lbs / kg) | 120,500 / 54,658 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1600 / 6.06 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 800 / 3028 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 165 / 1140 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17" x 24" / 432x610 |
| Tractive Effort (lbs / kg) | 22,109 / 10028.49 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.16 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 76 - 2" / 51 |
| Flues (number - dia) (in / mm) | 13 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 13.54 / 4.13 |
| Firebox Area (sq ft / m2) | 82 / 7.62 |
| Grate Area (sq ft / m2) | 14.40 / 1.34 |
| Evaporative Heating Surface (sq ft / m2) | 884 / 82.16 |
| Superheating Surface (sq ft / m2) | 228 / 21.19 |
| Combined Heating Surface (sq ft / m2) | 1112 / 103.35 |
| Evaporative Heating Surface/Cylinder Volume | 140.10 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2376 |
| Same as above plus superheater percentage | 2875 |
| Same as above but substitute firebox area for grate area | 16,371 |
| Power L1 | 6416 |
| Power MT | 461.24 |