Firebox heating surface included 85 sq ft of thermic syphons. Drury (1993) notes that these wartime engines were near-duplicates of the Espee's GS-6. A principal difference was the use of the Elesco feedwater heater. On the Central of Georgia, the class was called the "Big Apples."
Alexander (American Locomotives, 1950) adds that they cost $178,000 each and could "maintain fast schedules between Macon [Georgia] and Atlanta with 22 passenger cars northbound or thirty cars southbound."
| Specifications | |
|---|---|
| Class | K |
| Locobase ID | 245 |
| Railroad | Central of Georgia |
| Whyte | 4-8-4 |
| Road Numbers | 451-458 |
| Gauge | Std |
| Builder | Lima |
| Year | 1943 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 20' |
| Engine Wheelbase | 45.83' |
| Ratio of driving wheelbase to overall engine wheebase | 0.44 |
| Overall Wheelbase (engine & tender) | 83.50' |
| Axle Loading (Maximum Weight per Axle) | 65000 lbs |
| Weight on Drivers | 260000 lbs |
| Engine Weight | 447200 lbs |
| Tender Light Weight | 246600 lbs |
| Total Engine and Tender Weight | 693800 lbs |
| Tender Water Capacity | 13000 gals |
| Tender Fuel Capacity (oil/coal) | 21 tons |
| Minimum weight per yard of rail on which locomotive could run | 108.33 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 73.50" |
| Boiler Pressure | 250 psi |
| Cylinders (dia x stroke) | 27" x 30" |
| Tractive Effort | 63230 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.11 |
| Heating Ability | |
| Firebox Area | 435 sq. ft |
| Grate Area | 90.40 sq. ft |
| Evaporative Heating Surface | 4705 |
| Superheating Surface | 2059 |
| Combined Heating Surface | 6764 |
| Evaporative Heating Surface/Cylinder Volume | 236.67 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 22600 |
| Same as above plus superheater percentage | 29479.57 |
| Same as above but substitute firebox area for grate area | 141854.12 |
| Power L1 | 39144.70 |
| Power MT | 1327.68 |
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