Very like the Western Maryland H-9s (Locobase 69), except for being lighter, having more firebox heating surface, and pulling a smaller tender. The firebox's heating surface in 3 of the class was augmented by 109 sq ft in the combustion chamber, 131 in thermic syphons, and 42 sq ft of arch tubes. In 1940, at least, 404 was not fitted with the thermic syphons.
They were used on the line between Bath and Summit, Pa, which had a ruling grade of 2.74%.
| Specifications | |
|---|---|
| Class | F-1 |
| Locobase ID | 65 |
| Railroad | Lehigh & New England |
| Whyte | 2-10-0 |
| Road Numbers | 401-404 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1927 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 22.50' |
| Engine Wheelbase | 32.80' |
| Ratio of driving wheelbase to overall engine wheebase | 0.69 |
| Overall Wheelbase (engine & tender) | 77.88' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 364000 lbs |
| Engine Weight | 399200 lbs |
| Tender Light Weight | 250992 lbs |
| Total Engine and Tender Weight | 650192 lbs |
| Tender Water Capacity | 12000 gals |
| Tender Fuel Capacity (oil/coal) | 16 tons |
| Minimum weight per yard of rail on which locomotive could run | 121 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 61" |
| Boiler Pressure | 225 psi |
| Cylinders (dia x stroke) | 30" x 32" |
| Tractive Effort | 90295 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.03 |
| Heating Ability | |
| Firebox Area | 533 sq. ft |
| Grate Area | 104.50 sq. ft |
| Evaporative Heating Surface | 4604 |
| Superheating Surface | 1248 |
| Combined Heating Surface | 5852 |
| Evaporative Heating Surface/Cylinder Volume | 175.86 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 23513 |
| Same as above plus superheater percentage | 28215 |
| Same as above but substitute firebox area for grate area | 143910 |
| Power L1 | 16165 |
| Power MT | 489.53 |
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