Drury (1993) notes their outsized power for the traffic on the road: "...fast, powerful engines designed to pull 16-18 cars at 80 mph -- but the speed limit on the route was 70 mph and the trains were rarely ever more than 8 to 10 cars."
According to Wikipedia:"The five locomotives only lasted ten years in their original intended assignments, since the Lackawanna dieselized its express passenger trains in 1947. The Hudsons were relegated to lesser assignments such as commuter trains, and began to be seen on the eastern end of the railroad. One assignment was the early morning Merchants Express (Train 26) from Scranton to Hoboken, New Jersey, returning in the late afternoon hauling the Scrantonian (Train 11). Another was the Interstate Express (Train 1301), received from the Reading Railroad/Jersey Central at Taylor Junction, near Scranton, and hauled to Binghamton, New York.
Even in this service, they did not last long. All five were withdrawn from service in 1951-53 and subsequently scrapped; none of the railroad's later steam locomotives survived the cutter's torch."
| Specifications | |
|---|---|
| Class | 1151 |
| Locobase ID | 184 |
| Railroad | Delaware, Lackawanna &Western |
| Whyte | 4-6-4 |
| Road Numbers | 1151-1155 |
| Gauge | Std |
| Builder | Alco-Schenectady |
| Year | 1938 |
| Valve Gear | Baker |
| Locomotive Length and Weight | |
| Driver Wheelbase | 14' |
| Engine Wheelbase | 40.59' |
| Ratio of driving wheelbase to overall engine wheebase | 0.34 |
| Overall Wheelbase (engine & tender) | 81.21' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 198000 lbs |
| Engine Weight | 377000 lbs |
| Tender Light Weight | 313100 lbs |
| Total Engine and Tender Weight | 690100 lbs |
| Tender Water Capacity | 15800 gals |
| Tender Fuel Capacity (oil/coal) | 26 tons |
| Minimum weight per yard of rail on which locomotive could run | 110 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 80" |
| Boiler Pressure | 245 psi |
| Cylinders (dia x stroke) | 26" x 30" |
| Tractive Effort | 52791 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.75 |
| Heating Ability | |
| Firebox Area | 477 sq. ft |
| Grate Area | 81.50 sq. ft |
| Evaporative Heating Surface | 3854 |
| Superheating Surface | 1123 |
| Combined Heating Surface | 4977 |
| Evaporative Heating Surface/Cylinder Volume | 209.06 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 19967.50 |
| Same as above plus superheater percentage | 24472.93 |
| Same as above but substitute firebox area for grate area | 143234.18 |
| Power L1 | 28964.91 |
| Power MT | 967.52 |
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