Diminuitive, graceful, high-boilered Pacifics with relatively low cylinder volume for the wheel arrangement on an American railroad. They also had among the smallest grates owned by a Pacific in North America.
The K-2's biggest difference from the K-1 was its year of construction (1924) and its builder (Richmond).
| Specifications | |
|---|---|
| Class | K-1/K-2 |
| Locobase ID | 7876 |
| Railroad | Pittsburgh & West Virginia |
| Whyte | 4-6-2 |
| Road Numbers | 200-201, 202 |
| Gauge | Std |
| Builder | Alco |
| Year | 1921 |
| Valve Gear | Baker |
| Locomotive Length and Weight | |
| Driver Wheelbase | 11' |
| Engine Wheelbase | 30.33' |
| Ratio of driving wheelbase to overall engine wheebase | 0.36 |
| Overall Wheelbase (engine & tender) | 61.27' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 117000 lbs |
| Engine Weight | 181000 lbs |
| Tender Light Weight | 128600 lbs |
| Total Engine and Tender Weight | 309600 lbs |
| Tender Water Capacity | 6500 gals |
| Tender Fuel Capacity (oil/coal) | 10 tons |
| Minimum weight per yard of rail on which locomotive could run | 65 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 63" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 20" x 26" |
| Tractive Effort | 25257 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.63 |
| Heating Ability | |
| Firebox Area | 147 sq. ft |
| Grate Area | 39.26 sq. ft |
| Evaporative Heating Surface | 2025 |
| Superheating Surface | 523 |
| Combined Heating Surface | 2548 |
| Evaporative Heating Surface/Cylinder Volume | 214.20 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 7066.80 |
| Same as above plus superheater percentage | 8517.32 |
| Same as above but substitute firebox area for grate area | 31891.15 |
| Power L1 | 14927.89 |
| Power MT | 843.85 |
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