Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 17, p. 199; Volume 19 p. 213. See also an account of the rise and decline of Longdale, Virginia on the Firmstone Manor B&B website at [], last accessed 13 August 2018. Works numbers were 12461 in January 1892, 14244 in March 1895, and 18140 in September 1900.
This resource-extraction company was based in Alleghany County, Virginia.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | North Branch |
| Locobase ID | 12146 |
| Railroad | Longdale Iron Company |
| Country | USA |
| Whyte | 2-8-0 |
| Number in Class | 3 |
| Road Numbers | 4-5, 8 |
| Gauge | 3' |
| Number Built | 3 |
| Builder | Burnham, Williams & Co |
| Year | 1892 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 11.75 / 3.58 |
| Engine Wheelbase (ft / m) | 18.58 / 5.66 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.63 |
| Overall Wheelbase (engine & tender) (ft / m) | 40.96 / 12.48 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 60,000 / 27,216 |
| Engine Weight (lbs / kg) | 68,000 / 30,844 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1800 / 6.82 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 25 / 12.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 37 / 940 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 20" / 254x508 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 17" x 20" / 432x508 |
| Tractive Effort (lbs / kg) | 12,288 / 5573.75 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.88 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 155 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.65 / 3.55 |
| Firebox Area (sq ft / m2) | 86.68 / 8.06 |
| Grate Area (sq ft / m2) | 13.60 / 1.26 |
| Evaporative Heating Surface (sq ft / m2) | 1035 / 96.19 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1035 / 96.19 |
| Evaporative Heating Surface/Cylinder Volume | 569.99 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2448 |
| Same as above plus superheater percentage | 2448 |
| Same as above but substitute firebox area for grate area | 15,602 |
| Power L1 | 3102 |
| Power MT | 455.92 |