Shown in a table of drawings and data describing the locomotives shown at the Philadelphia Centennial Exhibition of 1876, this design featured the biggest, broadest stack. A wood-burning engine needed a lot of spark-arresting area to capture all the cinders and this engine's cabbage stack looked equal to the task.
| Specifications | |
|---|---|
| Class | |
| Locobase ID | 9677 |
| Railroad | Mobile & Montgomery |
| Whyte | 4-4-0 |
| Road Numbers | |
| Gauge | Std |
| Builder | Rogers |
| Year | 1876 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase | |
| Engine Wheelbase | |
| Ratio of driving wheelbase to overall engine wheebase | |
| Overall Wheelbase (engine & tender) | |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 40900 lbs |
| Engine Weight | 62000 lbs |
| Tender Light Weight | |
| Total Engine and Tender Weight | 190400 lbs |
| Tender Water Capacity | |
| Tender Fuel Capacity (oil/coal) | |
| Minimum weight per yard of rail on which locomotive could run | 34 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 56.50" |
| Boiler Pressure | 115 psi |
| Cylinders (dia x stroke) | 16" x 24" |
| Tractive Effort | 10630 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.85 |
| Heating Ability | |
| Firebox Area | 97 sq. ft |
| Grate Area | 14.40 sq. ft |
| Evaporative Heating Surface | 900 |
| Superheating Surface | |
| Combined Heating Surface | 900 |
| Evaporative Heating Surface/Cylinder Volume | 161.14 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1656 |
| Same as above plus superheater percentage | 1656 |
| Same as above but substitute firebox area for grate area | 11155 |
| Power L1 | 2685 |
| Power MT | 289.46 |
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