Data from Baldwin Locomotive Works, Record of Recent Construction ((1903), No. 39, p.280-281. See also DeGolyer, Volume 25, p. 19. Works number was 20919 in October 1902.
This 38-mile (61 km) narrow-gauge line connected Fredericksburg and Orange in northern Virginia's Spotsylvania County. Established before the Civil War, the PF&P maintained its narrow-gauge right-of-way until 1926.
This little American moved to the Orange & Fredericksburg when the original railroad widened its gauge. A year later the O&F sold the engine to the Virginia Central in November 1927.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 2 |
| Locobase ID | 10789 |
| Railroad | Potomac, Fredericksburg & Piedmont |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | 1 |
| Road Numbers | 2 |
| Gauge | 3' |
| Number Built | 1 |
| Builder | Burnham, Williams & Co |
| Year | 1902 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.17 / 2.49 |
| Engine Wheelbase (ft / m) | 21.67 / 6.61 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.38 |
| Overall Wheelbase (engine & tender) (ft / m) | 40.58 / 12.37 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 36,540 / 16,574 |
| Engine Weight (lbs / kg) | 57,500 / 26,082 |
| Tender Loaded Weight (lbs / kg) | 27,500 / 12,474 |
| Total Engine and Tender Weight (lbs / kg) | 85,000 / 38,556 |
| Tender Water Capacity (gals / ML) | 1400 / 5.30 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 30 / 15 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 44 / 1118 |
| Boiler Pressure (psi / kPa) | 150 / 1030 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13" x 18" / 330x457 |
| Tractive Effort (lbs / kg) | 8815 / 3998.42 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.15 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 148 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.92 / 3.33 |
| Firebox Area (sq ft / m2) | 70.20 / 6.52 |
| Grate Area (sq ft / m2) | 10 / 0.93 |
| Evaporative Heating Surface (sq ft / m2) | 803 / 74.63 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 803 / 74.63 |
| Evaporative Heating Surface/Cylinder Volume | 289.89 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1500 |
| Same as above plus superheater percentage | 1500 |
| Same as above but substitute firebox area for grate area | 10,530 |
| Power L1 | 4583 |
| Power MT | 553.03 |