The 82-mile-long A & St A B Railway -- aka the Bay Line or the Panama Canal Route -- ran from Dothan, Alabama to Panama City, Florida and was completed in 1908 by A B Steele. It was chiefly a lumber road and never did connect Panama City with Atlanta on its own lines. Its profusion of Pacifics show the line had a bustling passenger service into the late 1920s.
These Mikes were added to the railway just as the US entered World War I. For their time, these were good-sized engines with dimensions that duplicate those of the New York Central's H-5 class. Locobase wonders if these were in fact exiles from the Water-Level Route.
| Specifications | |
|---|---|
| Class | 401 |
| Locobase ID | 6666 |
| Railroad | Atlanta & St Andrews Bay |
| Whyte | 2-8-2 |
| Road Numbers | 401-404 |
| Gauge | Std |
| Builder | Alco |
| Year | 1917 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase | 16.50' |
| Engine Wheelbase | 35.25' |
| Ratio of driving wheelbase to overall engine wheebase | 0.47 |
| Overall Wheelbase (engine & tender) | 67.37' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 215000 lbs |
| Engine Weight | 280000 lbs |
| Tender Light Weight | 74000 lbs |
| Total Engine and Tender Weight | 354000 lbs |
| Tender Water Capacity | 7500 gals |
| Tender Fuel Capacity (oil/coal) | 3610 gals |
| Minimum weight per yard of rail on which locomotive could run | 89.58 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 63" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 25" x 32" |
| Tractive Effort | 48571 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.43 |
| Heating Ability | |
| Firebox Area | 230 sq. ft |
| Grate Area | 56.50 sq. ft |
| Evaporative Heating Surface | 4010 |
| Superheating Surface | 870 |
| Combined Heating Surface | 4880 |
| Evaporative Heating Surface/Cylinder Volume | 220.57 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 10170 |
| Same as above plus superheater percentage | 11983.09 |
| Same as above but substitute firebox area for grate area | 48780.74 |
| Power L1 | 13504.07 |
| Power MT | 553.89 |
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