Data from John H White, Jr, A History of the American Locomotive: Its Development: 1830-1880 (New York: Dover Publications, 1979 - original publication in 1968).
Designed by the Philadelphia, Germantown, and Norristown's Henry Campbell. White noted that this engine, "a giant for the times", could pull a 450-ton train on level ground at 15 mph (24 kph). Although it was the first to have the "American" wheel arrangement, its suspension was far too rigid and it was rough on the track. It later went to the Long Island Railroad.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 2540 |
| Railroad | Philadelphia, Germantown & Norristown |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | James Brooks |
| Year | 1837 |
| Valve Gear | Eastwick |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 16.45 / 5.01 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 8000 / 3629 |
| Weight on Drivers (lbs / kg) | 16,000 / 7257 |
| Engine Weight (lbs / kg) | |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 13 / 6.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 90 / 620 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14" x 15.75" / 356x400 |
| Tractive Effort (lbs / kg) | 4373 / 1983.56 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.66 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 12 / 1.12 |
| Evaporative Heating Surface (sq ft / m2) | 723 / 67.19 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 723 / 67.19 |
| Evaporative Heating Surface/Cylinder Volume | 257.30 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1080 |
| Same as above plus superheater percentage | 1080 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |