Attributed to Superintendent of Machinery RLC Blackall and built at the Oneonta shops, this 2-6-0 was given a rave review. Some of the class hadn't been shopped once in the 3 years since their construction and although rated as freight engines, stood their turn on passenger runs quite satisfactorily.
The correspondent noted that the Lehigh Valley ran their freight engines with very heavy loads, "so much so that they have to be run 'down in the corner' [i.e., with the Johnson Bar fully deployed] in order to get over the road". To make three years without heavy repairs under such circumstances, argued the motive power department, meant that the engine was well-built indeed.
| Specifications | |
|---|---|
| Class | |
| Locobase ID | 5706 |
| Railroad | Lehigh Valley |
| Whyte | 2-6-0 |
| Road Numbers | 257 |
| Gauge | Std |
| Builder | shops |
| Year | 1891 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase | 14.15' |
| Engine Wheelbase | 21.73' |
| Ratio of driving wheelbase to overall engine wheebase | 0.65 |
| Overall Wheelbase (engine & tender) | 45.25' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 86930 lbs |
| Engine Weight | 100800 lbs |
| Tender Light Weight | 57200 lbs |
| Total Engine and Tender Weight | 158000 lbs |
| Tender Water Capacity | 3300 gals |
| Tender Fuel Capacity (oil/coal) | 5.5 tons |
| Minimum weight per yard of rail on which locomotive could run | 48.29 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 57.50" |
| Boiler Pressure | 145 psi |
| Cylinders (dia x stroke) | 16" x 24" |
| Tractive Effort | 13170 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.60 |
| Heating Ability | |
| Firebox Area | 129 sq. ft |
| Grate Area | 27.50 sq. ft |
| Evaporative Heating Surface | 1411 |
| Superheating Surface | |
| Combined Heating Surface | 1411 |
| Evaporative Heating Surface/Cylinder Volume | 252.64 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3987.50 |
| Same as above plus superheater percentage | 3987.50 |
| Same as above but substitute firebox area for grate area | 18705 |
| Power L1 | 5115.41 |
| Power MT | 389.19 |
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