"LV found, as did most other roads with three-cylinder power, that the cost of maintaining the third cylinder rose charply when they ran at speeds over 30 mph. In 1939, the road rebuilt [them] as two-cylinder engines, changed their class from S-1 to S-2 and put them in freight service, where they proved disappointing." (Drury, 1993, 221-222).
| Specifications | |
|---|---|
| Class | S-1 |
| Locobase ID | 208 |
| Railroad | Lehigh Valley |
| Whyte | 4-8-2 |
| Road Numbers | 5000-5005 |
| Gauge | Std |
| Builder | Alco-Brooks |
| Year | 1924 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase | 18.75' |
| Engine Wheelbase | 41.17' |
| Ratio of driving wheelbase to overall engine wheebase | 0.46 |
| Overall Wheelbase (engine & tender) | 77.67' |
| Axle Loading (Maximum Weight per Axle) | 61700 lbs |
| Weight on Drivers | 246500 lbs |
| Engine Weight | 369000 lbs |
| Tender Light Weight | 201000 lbs |
| Total Engine and Tender Weight | 570000 lbs |
| Tender Water Capacity | 10500 gals |
| Tender Fuel Capacity (oil/coal) | 15 tons |
| Minimum weight per yard of rail on which locomotive could run | 102.71 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 69" |
| Boiler Pressure | 200 psi |
| Cylinders (dia x stroke) | 25" x 28" (3) |
| Tractive Effort | 64674 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.81 |
| Heating Ability | |
| Firebox Area | 392 sq. ft |
| Grate Area | 84.30 sq. ft |
| Evaporative Heating Surface | 4729 |
| Superheating Surface | 1294 |
| Combined Heating Surface | 6023 |
| Evaporative Heating Surface/Cylinder Volume | 198.18 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 16860 |
| Same as above plus superheater percentage | 20482.25 |
| Same as above but substitute firebox area for grate area | 95243.70 |
| Power L1 | 17672.72 |
| Power MT | 632.24 |
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