The P&WV was not a major passenger carrier. It never scheduled more than three trains a day, in each direction between Wheeling, WV and Pittsburgh, PA. Before 1921, it was able to cover its passenger train needs with four Atlantics, leased from its primary western connection, the Wheeling & Lake Erie. Yet, in 1921 the railroad had accumulated enough money to buy its own passenger locomotives. It bought two 4-6-2's from Alco, Brooks, and they were among the lightest Pacifics ever built. Indeed, many railroads had Pacifics with more weight on their drivers than the entire locomotive weight of the P&WV K-1 class. Considering they pulled passenger trains that were only three cars long, over a well engineered line that had minimal grades, the P&WV could get away with their compact sized Pacifics.
In 1924, a third Pacific, class K-2, was bought from Alco, Richmond. It weighed two tons more, but the tractive effort of the #202 was only slightly higher than the first two P&WV Pacifics. Passenger train service was discontinued on the P&WV November 1, 1931. K-1 #201 was scrapped in 1941, but the #200 and #202 lasted until 1947. The locomotives were used in milk train service after passenger train operations ceased.
Class | Road Number | Year Built | Builder |
---|---|---|---|
K-1 | 200, 201 | 1921 | ALCO, Brooks |
K-2 | 202 | 1924 | ALCO, Richmond |
Data from P & WV 12 - 1937 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Brooks works numbers were 63104-63105 in September 1921, Richmond delivered 65547 in May 1924.
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).
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | K-1/K-2 |
Locobase ID | 7876 |
Railroad | Pittsburgh & West Virginia |
Country | USA |
Whyte | 4-6-2 |
Number in Class | 3 |
Road Numbers | 200-201, 202 |
Gauge | Std |
Number Built | 3 |
Builder | Alco - multiple works |
Year | 1921 |
Valve Gear | Baker |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 11 / 3.35 |
Engine Wheelbase (ft / m) | 30.33 / 9.24 |
Ratio of driving wheelbase to overall engine wheelbase | 0.36 |
Overall Wheelbase (engine & tender) (ft / m) | 61.27 / 18.68 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 117,000 / 53,070 |
Engine Weight (lbs / kg) | 181,000 / 82,100 |
Tender Loaded Weight (lbs / kg) | 128,600 / 58,332 |
Total Engine and Tender Weight (lbs / kg) | 309,600 / 140,432 |
Tender Water Capacity (gals / ML) | 6500 / 24.62 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 10 / 9 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 65 / 32.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 63 / 1600 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 |
Tractive Effort (lbs / kg) | 25,257 / 11456.40 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.63 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 136 - 2" / 51 |
Flues (number - dia) (in / mm) | 24 - 5.375" / 137 |
Flue/Tube length (ft / m) | 18 / 5.49 |
Firebox Area (sq ft / m2) | 147 / 13.66 |
Grate Area (sq ft / m2) | 39.26 / 3.65 |
Evaporative Heating Surface (sq ft / m2) | 2025 / 188.20 |
Superheating Surface (sq ft / m2) | 523 / 48.61 |
Combined Heating Surface (sq ft / m2) | 2548 / 236.81 |
Evaporative Heating Surface/Cylinder Volume | 214.29 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 7067 |
Same as above plus superheater percentage | 8551 |
Same as above but substitute firebox area for grate area | 32,017 |
Power L1 | 14,934 |
Power MT | 844.20 |