These was a modest-sized Santa Fe trio, quite a bit smaller than the Atlantic Coast Line engines they'd later join under the ACL banner. After the acquisition, the ACL increased the driver diameter to 63", which the frame's long wheelbase easily accommodated.
| Specifications | |
|---|---|
| Class | F-1 |
| Locobase ID | 7862 |
| Railroad | Atlanta, Birmingham & Atlantic (AB&C) |
| Whyte | 2-10-2 |
| Road Numbers | 401-403 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1917 |
| Valve Gear | Baker |
| Locomotive Length and Weight | |
| Driver Wheelbase | 21.08' |
| Engine Wheelbase | 38' |
| Ratio of driving wheelbase to overall engine wheebase | 0.55 |
| Overall Wheelbase (engine & tender) | 71.58' |
| Axle Loading (Maximum Weight per Axle) | 50000 lbs |
| Weight on Drivers | 250000 lbs |
| Engine Weight | 316000 lbs |
| Tender Light Weight | 168000 lbs |
| Total Engine and Tender Weight | 484000 lbs |
| Tender Water Capacity | 8000 gals |
| Tender Fuel Capacity (oil/coal) | 15 tons |
| Minimum weight per yard of rail on which locomotive could run | 83 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 58" |
| Boiler Pressure | 188.50 psi |
| Cylinders (dia x stroke) | 27" x 30" |
| Tractive Effort | 60416 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.14 |
| Heating Ability | |
| Firebox Area | 410 sq. ft |
| Grate Area | 70 sq. ft |
| Evaporative Heating Surface | 4472 |
| Superheating Surface | 1175 |
| Combined Heating Surface | 5647 |
| Evaporative Heating Surface/Cylinder Volume | 224.95 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 13195 |
| Same as above plus superheater percentage | 15834 |
| Same as above but substitute firebox area for grate area | 92742 |
| Power L1 | 15671 |
| Power MT | 690.97 |
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