Central of Georgia added two Nicholson Thermic Syphons of 88 sq ft and three arch tubes of 27 sq ft to the basic USRA heavy Santa Fe design; this resulted in a huge firebox heating surface. Cole-formula cylinder horsepower rating of 3,082. Drury (1993) comments that these engines "were much better suited to CofG's Birmingham route than the Mallets [2-6-6-2] and could be used on other lines as well."
| Specifications | |
|---|---|
| Class | J-1 |
| Locobase ID | 462 |
| Railroad | Central of Georgia |
| Whyte | 2-10-2 |
| Road Numbers | 701-710 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1925 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 22.30' |
| Engine Wheelbase | 42.50' |
| Ratio of driving wheelbase to overall engine wheebase | 0.52 |
| Overall Wheelbase (engine & tender) | |
| Axle Loading (Maximum Weight per Axle) | 62390 lbs |
| Weight on Drivers | 302220 lbs |
| Engine Weight | 401480 lbs |
| Tender Light Weight | 208600 lbs |
| Total Engine and Tender Weight | 610080 lbs |
| Tender Water Capacity | 12000 gals |
| Tender Fuel Capacity (oil/coal) | 16 tons |
| Minimum weight per yard of rail on which locomotive could run | 101 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 63" |
| Boiler Pressure | 190 psi |
| Cylinders (dia x stroke) | 30" x 32" |
| Tractive Effort | 73829 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.09 |
| Heating Ability | |
| Firebox Area | 504 sq. ft |
| Grate Area | 88.30 sq. ft |
| Evaporative Heating Surface | 5233 |
| Superheating Surface | 1285 |
| Combined Heating Surface | 6518 |
| Evaporative Heating Surface/Cylinder Volume | 199.89 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 16777 |
| Same as above plus superheater percentage | 20132 |
| Same as above but substitute firebox area for grate area | 114912 |
| Power L1 | 14721 |
| Power MT | 536.93 |
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