Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 13. p 222. Works number 8526 in April 1887.
This single, relatively powerful Mogul for its time was sold to the Birmingham Southern at some point as 11. At some later date, the railroad's owner, TCI & RR renumbered it as 172.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 7 |
| Locobase ID | 11871 |
| Railroad | Birmingham Southern (TCI&R) |
| Country | USA |
| Whyte | 2-6-0 |
| Number in Class | 1 |
| Road Numbers | 7 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Burnham, Parry, Williams & Co |
| Year | 1887 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14 / 4.27 |
| Engine Wheelbase (ft / m) | 22 / 6.71 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.64 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 31,850 / 14,447 |
| Weight on Drivers (lbs / kg) | 93,625 / 42,468 |
| Engine Weight (lbs / kg) | 110,580 / 50,158 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 2650 / 10.04 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 52 / 26 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 50 / 1270 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 24" / 508x610 |
| Tractive Effort (lbs / kg) | 21,216 / 9623.43 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.41 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 246 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.54 / 3.52 |
| Firebox Area (sq ft / m2) | 157.40 / 14.63 |
| Grate Area (sq ft / m2) | 23.90 / 2.22 |
| Evaporative Heating Surface (sq ft / m2) | 1592 / 147.96 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1592 / 147.96 |
| Evaporative Heating Surface/Cylinder Volume | 182.36 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3107 |
| Same as above plus superheater percentage | 3107 |
| Same as above but substitute firebox area for grate area | 20,462 |
| Power L1 | 2952 |
| Power MT | 208.54 |