Other than those of the Great Northern, Baldwin managed to sell only 3 more of this unequal wheel arrangement to two other railroads. Two went to the Southern while this lone engine was delivered to a Georgia subsidiary. Baldwin reported that the engine was operating over 1 1/4% grades and developing 72,700 lb of tractive effort. It used a "reheater" in the smokebox to dry the steam before admitting it to the low-pressure cylinders.
After about 4 years of what must have been unsatisfying operation, the engine went over to the Chicago, New Orleans & Texas for three years and then to the Southern itself. The Southern ran it for another 18 years before scrapping it in 1935.
Early Mallets with unequal wheel arrangement. Rigid wheelbases were 10 ft (front) and 15 ft (rear). Only 3 built for the Southern (2 - works #36031-2) and Alabama Great Southern (1 - works #33867). The AGS engine was sold in 1914 to another Southern subsidiary, the Cincinnati, New Orleans & Texas Pacific as their 6389 (according to the CNO&TP diagram book).
Boiler pressure later reduced and tractive effort dropped to 72,500 lb. Great Northern 2-6-8-0s were very similar.
| Specifications | ||
|---|---|---|
| Class | J | Ls |
| Locobase ID | 10990 | 293 |
| Railroad | Alabama Great Southern (SRS) | Southern (SRS) |
| Whyte | 2-6-8-0 | 2-6-8-0 |
| Road Numbers | 300 / 6399 | 4002-4003 |
| Gauge | Std | Std |
| Builder | Baldwin | Baldwin |
| Year | 1909 | 1911 |
| Valve Gear | Walschaert | Walschaert |
| Locomotive Length and Weight | ||
| Driver Wheelbase | 15' | 10' |
| Engine Wheelbase | 43.33' | 43.33' |
| Ratio of driving wheelbase to overall engine wheebase | 0.35 | 0.23 |
| Overall Wheelbase (engine & tender) | 71.54' | 71.54' |
| Axle Loading (Maximum Weight per Axle) | ||
| Weight on Drivers | 332700 lbs | 332700 lbs |
| Engine Weight | 363550 lbs | 363500 lbs |
| Tender Light Weight | 171450 lbs | 162000 lbs |
| Total Engine and Tender Weight | 535000 lbs | 525500 lbs |
| Tender Water Capacity | 9000 gals | 9000 gals |
| Tender Fuel Capacity (oil/coal) | 13 tons | 15 tons |
| Minimum weight per yard of rail on which locomotive could run | 79 lb rail | 79 lb rail |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter | 56" | 56" |
| Boiler Pressure | 200 psi | 200 psi |
| Cylinders (dia x stroke) | 23" x 32" | 23" x 32" |
| Low Pressure Cylinders (dia x stroke) | 35" x 32" | 35" x 32" |
| Tractive Effort | 71780 lbs | 71780 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.63 | 4.63 |
| Heating Ability | ||
| Firebox Area | 228 sq. ft | 221 sq. ft |
| Grate Area | 78 sq. ft | 78 sq. ft |
| Evaporative Heating Surface | 5611 | 5601 |
| Superheating Surface | 638 | 638 |
| Combined Heating Surface | 6249 | 6239 |
| Evaporative Heating Surface/Cylinder Volume | 364.64 | 363.99 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 15600 | 15600 |
| Same as above plus superheater percentage | 17160 | 17160 |
| Same as above but substitute firebox area for grate area | 50160 | 48620 |
| Power L1 | 6544 | 6521 |
| Power MT | 303.54 | 302.48 |
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