54 sq ft for the grate
185 sq ft for the firebox heating surface
2,601 sq ft for the evaporative heating surface.)
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.
| Specifications | |
|---|---|
| Class | 540 |
| Locobase ID | 5428 |
| Railroad | Mobile & Ohio |
| Whyte | 2-8-0 |
| Road Numbers | 540-554 |
| Gauge | Std |
| Builder | several |
| Year | 1914 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 16.50' |
| Engine Wheelbase | 25.08' |
| Ratio of driving wheelbase to overall engine wheebase | 0.66 |
| Overall Wheelbase (engine & tender) | 61.57' |
| Axle Loading (Maximum Weight per Axle) | 49200 lbs |
| Weight on Drivers | 191500 lbs |
| Engine Weight | 220850 lbs |
| Tender Light Weight | 151000 lbs |
| Total Engine and Tender Weight | 371850 lbs |
| Tender Water Capacity | 7500 gals |
| Tender Fuel Capacity (oil/coal) | 12 tons |
| Minimum weight per yard of rail on which locomotive could run | 79.79 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 63" |
| Boiler Pressure | 190 psi |
| Cylinders (dia x stroke) | 24" x 30" |
| Tractive Effort | 44297 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.32 |
| Heating Ability | |
| Firebox Area | 173 sq. ft |
| Grate Area | 53 sq. ft |
| Evaporative Heating Surface | 2568 |
| Superheating Surface | 546 |
| Combined Heating Surface | 3114 |
| Evaporative Heating Surface/Cylinder Volume | 163.48 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 10070 |
| Same as above plus superheater percentage | 11835.65 |
| Same as above but substitute firebox area for grate area | 38633.33 |
| Power L1 | 10601.16 |
| Power MT | 488.18 |
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