Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 71, pp. 417+. Works number was 55804 in November 1922.
The VLC's rails near Malone, Wash included 5 1/2-6% grades over 3/4 of a mile (1.2 km) on 56 lb/yard (28 kg/metre) rail. Maximum curvature reached 30 degrees. Baldwin's standard oil-burning, superheated logging Mikado had the usual 8" (203 mm) piston valves.
Mason County Logging Company of Bordeaux, Wash bought the VLC in 1923 and retained the 3 until June 1942, when the engine was moved on to the Santa Maria Valley in California as their 150. SMV used the 150 for another decade before scrapping it in 1952.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4 |
| Locobase ID | 15241 |
| Railroad | Vance Lumber Company |
| Country | USA |
| Whyte | 2-8-2 |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1922 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 12 / 3.66 |
| Engine Wheelbase (ft / m) | 27.58 / 8.41 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.44 |
| Overall Wheelbase (engine & tender) (ft / m) | 48.40 / 14.75 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 116,000 / 52,617 |
| Engine Weight (lbs / kg) | 143,000 / 64,864 |
| Tender Loaded Weight (lbs / kg) | 76,000 / 34,473 |
| Total Engine and Tender Weight (lbs / kg) | 219,000 / 99,337 |
| Tender Water Capacity (gals / ML) | 3500 / 13.26 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1600 / 6056 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 48 / 24 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 185 / 1280 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
| Tractive Effort (lbs / kg) | 27,790 / 12605.35 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.17 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 164 - 2" / 51 |
| Flues (number - dia) (in / mm) | 24 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 12.08 / 3.68 |
| Firebox Area (sq ft / m2) | 141 / 13.10 |
| Grate Area (sq ft / m2) | 25.50 / 2.37 |
| Evaporative Heating Surface (sq ft / m2) | 1576 / 146.47 |
| Superheating Surface (sq ft / m2) | 328 / 30.48 |
| Combined Heating Surface (sq ft / m2) | 1904 / 176.95 |
| Evaporative Heating Surface/Cylinder Volume | 222.91 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4718 |
| Same as above plus superheater percentage | 5519 |
| Same as above but substitute firebox area for grate area | 30,519 |
| Power L1 | 10,042 |
| Power MT | 763.41 |