Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 71, pp. 198+. Works number was 55467 in May 1922.
This engine had an even more unusual arrangement for an American locomotive than the 2-4-2T tank engine used by many logging companies. Tralling a tender, serving a mixed-traffic service, and arriving on the railroad so late in the steam era combine to make this a rare beast indeed. A photograph showing the 4 with its bi-directional suggests that it was really an 0-6-0 that the WRR wanted to be bi-directional.
Later in its career, the 4 served the Atlantic & Carolina, the Oats Lumber Company, and finally the Beaufort & Morehead.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4 |
| Locobase ID | 15211 |
| Railroad | Warrenton |
| Country | USA |
| Whyte | 2-4-2 |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1923 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.50 / 2.29 |
| Engine Wheelbase (ft / m) | 23.50 / 7.16 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.32 |
| Overall Wheelbase (engine & tender) (ft / m) | 45.81 / 13.96 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 65,000 / 29,484 |
| Engine Weight (lbs / kg) | 87,000 / 39,463 |
| Tender Loaded Weight (lbs / kg) | 65,000 / 29,484 |
| Total Engine and Tender Weight (lbs / kg) | 152,000 / 68,947 |
| Tender Water Capacity (gals / ML) | 3000 / 11.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 54 / 27 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42 / 1067 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
| Tractive Effort (lbs / kg) | 16,029 / 7270.64 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.06 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 160 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.75 / 3.58 |
| Firebox Area (sq ft / m2) | 70 / 6.50 |
| Grate Area (sq ft / m2) | 15.90 / 1.48 |
| Evaporative Heating Surface (sq ft / m2) | 1047 / 97.27 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1047 / 97.27 |
| Evaporative Heating Surface/Cylinder Volume | 232.67 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2544 |
| Same as above plus superheater percentage | 2544 |
| Same as above but substitute firebox area for grate area | 11,200 |
| Power L1 | 3477 |
| Power MT | 235.86 |