Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volumes 52, p. 46. Works number was 41811 in December 1914.
Powellton, WVa was the headquarters of a coal-mining and coke-manufacturing company that lay on the Powellton branch of the Chesapeake & Ohio. The coking operation was the largest on the C&O.
The specs show that the Mount Carbon Railway had 56 lb/yard (28-kg/metre) rail for 3 miles (4.8 km) and 70 lb/yard (35 kg/metre) for an additional mile. 12 degree curves (radii of 478 feet/145.7 metres). The engine was expected to operate at 8-10 mph (13-16 kph) on the level. Inspection of the engine on 22 December 1914 inspired a Hereafter note that admonished: "Omit the unnecessary cleaing holes in the boiler an[d] provide holes in accordance with our regular practice."
The 4 later operated on the Elkhorn Piney Coal Company.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 4 |
| Locobase ID | 14253 |
| Railroad | Mount Carbon & Port Carbon |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 4 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1914 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14 / 4.27 |
| Engine Wheelbase (ft / m) | 21.92 / 6.68 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.64 |
| Overall Wheelbase (engine & tender) (ft / m) | 50.46 / 15.38 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 120,000 / 54,431 |
| Engine Weight (lbs / kg) | 137,000 / 62,142 |
| Tender Loaded Weight (lbs / kg) | 90,000 / 40,823 |
| Total Engine and Tender Weight (lbs / kg) | 227,000 / 102,965 |
| Tender Water Capacity (gals / ML) | 4500 / 17.05 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8 / 7 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 67 / 33.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 51 / 1295 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 19" x 26" / 483x660 |
| Tractive Effort (lbs / kg) | 28,158 / 12772.27 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.26 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 254 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12 / 3.66 |
| Firebox Area (sq ft / m2) | 156.30 / 14.52 |
| Grate Area (sq ft / m2) | 26.52 / 2.46 |
| Evaporative Heating Surface (sq ft / m2) | 1741 / 161.74 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1741 / 161.74 |
| Evaporative Heating Surface/Cylinder Volume | 204.10 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4774 |
| Same as above plus superheater percentage | 4774 |
| Same as above but substitute firebox area for grate area | 28,134 |
| Power L1 | 4525 |
| Power MT | 249.40 |