Data from Zerah Colburn, The Locomotive Engine (1851). Boiler pressure is an estimate.
Souther left Hinkley's works in 1848 (just as it was being renamed Boston Locomotive Works) to start his own shop in South Boston. It was later (1854) incorporated as the Globe Works; this was around the same time that Souther also managed the Tredegar Works in Richmond. The Globe Works burned down in a fire in 1860.
In addition to boiler details, Colburn also gave the following data:
Size of steam ports 9 7/8 x 1"
Size of exhaust ports 9 7/8 x 1 1/4".
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 15" cylinders |
| Locobase ID | 8812 |
| Railroad | John Souther |
| Country | USA |
| Whyte | 4-4-0 |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | John Souther |
| Year | 1850 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| 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) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 66 / 1676 |
| Boiler Pressure (psi / kPa) | 80 / 550 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 20" / 381x508 |
| Tractive Effort (lbs / kg) | 4636 / 2102.86 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 135 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.50 / 3.20 |
| Firebox Area (sq ft / m2) | 60.80 / 5.65 |
| Grate Area (sq ft / m2) | 9.63 / 0.89 |
| Evaporative Heating Surface (sq ft / m2) | 710 / 65.99 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 710 / 65.99 |
| Evaporative Heating Surface/Cylinder Volume | 173.59 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 770 |
| Same as above plus superheater percentage | 770 |
| Same as above but substitute firebox area for grate area | 4864 |
| Power L1 | 2182 |
| Power MT | |