Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 65, pp. 336+. Works number was 53341 in June 1920.
This Oregon timber harvester operated in the Wind River Valley (go figure) and used locomotives like this logging Prairie tank to haul the fallen trees to the mill. The tram roads over which the 2 traveled was laid with 35-40 lb/yard (17.5-20 kg). Maximum grades soared to 5% and curves bent as tightly as 25 degrees (radii of 231 feet/70.4 metres). A "Hereafter" note suggested "Raising question about making cylinder 13 1/2" diameter and working pressure 175 pounds as originally specified." According to another note in the specs, the company shrugged, accepted the 14" cylinders, and asked the builder to set the safety valves at 165 pounds.
The 2 would later be sold to Spaulding Pulp & Paper Company.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 14976 |
| Railroad | Wind River Lumber Company |
| Country | USA |
| Whyte | 2-6-2T |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1920 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.50 / 2.90 |
| Engine Wheelbase (ft / m) | 21.92 / 6.68 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.43 |
| Overall Wheelbase (engine & tender) (ft / m) | 21.92 / 6.68 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 60,000 / 27,216 |
| Engine Weight (lbs / kg) | 84,000 / 38,102 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| 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) | 33 / 16.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 165 / 1140 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 18" / 356x457 |
| Tractive Effort (lbs / kg) | 13,373 / 6065.90 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.49 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 125 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9 / 2.74 |
| Firebox Area (sq ft / m2) | 71 / 6.60 |
| Grate Area (sq ft / m2) | 12.30 / 1.14 |
| Evaporative Heating Surface (sq ft / m2) | 654 / 60.76 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 654 / 60.76 |
| Evaporative Heating Surface/Cylinder Volume | 203.74 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2030 |
| Same as above plus superheater percentage | 2030 |
| Same as above but substitute firebox area for grate area | 11,715 |
| Power L1 | 3198 |
| Power MT | 352.52 |