Data on table in May 1916 issue of RME. (Southern's locomotive diagram 26-F-29, dated September 5, 1918 shows slightly different data for the heating surfaces:
54 sq ft for the grate
185 sq ft for the firebox heating surface
2,601 sq ft for the evaporative heating surface.) Also see DeGolyer, Vol 50, pp. 326+.
This was the sole set of Consolidations bought by the M & O while it was under the Southern's overall control. Eight of these came from Alco's Richmond plant and seven from Baldwin.
Drury (1993) comments that these were not popular with their crews: "The firebox, about the same size as that of the 2-8-2, required that the boiler be mounted higher to clear the rear drivers, and the rear pair of drivers tended to derail." Not only were no more 2-8-0s purchased, but 2/3 of those already owned were scrapped by 1940.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 540 |
| Locobase ID | 5428 |
| Railroad | Mobile & Ohio (GM&O) |
| Country | USA |
| Whyte | 2-8-0 |
| Number in Class | 15 |
| Road Numbers | 540-554 |
| Gauge | Std |
| Number Built | 15 |
| Builder | several |
| Year | 1914 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 16.50 / 5.03 |
| Engine Wheelbase (ft / m) | 25.08 / 7.64 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.66 |
| Overall Wheelbase (engine & tender) (ft / m) | 61.50 / 18.77 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 49,200 / 22,317 |
| Weight on Drivers (lbs / kg) | 196,000 / 86,863 |
| Engine Weight (lbs / kg) | 220,000 / 100,176 |
| Tender Loaded Weight (lbs / kg) | 151,000 / 68,493 |
| Total Engine and Tender Weight (lbs / kg) | 371,000 / 168,669 |
| Tender Water Capacity (gals / ML) | 7500 / 28.41 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 12 / 11 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 82 / 41 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63 / 1600 |
| Boiler Pressure (psi / kPa) | 190 / 1310 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 24" x 30" / 610x762 |
| Tractive Effort (lbs / kg) | 44,297 / 20092.81 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.42 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 220 - 2" / 51 |
| Flues (number - dia) (in / mm) | 32 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 15.04 / 4.58 |
| Firebox Area (sq ft / m2) | 180 / 16.08 |
| Grate Area (sq ft / m2) | 53.30 / 4.93 |
| Evaporative Heating Surface (sq ft / m2) | 2579 / 238.66 |
| Superheating Surface (sq ft / m2) | 557 / 50.74 |
| Combined Heating Surface (sq ft / m2) | 3136 / 289.40 |
| Evaporative Heating Surface/Cylinder Volume | 164.16 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 10,127 |
| Same as above plus superheater percentage | 11,950 |
| Same as above but substitute firebox area for grate area | 40,356 |
| Power L1 | 10,784 |
| Power MT | 485.20 |