The Paterson builder supplied these relatively large Ten-wheelers as a batch (works #2461-2468). The last course of boiler was sharply coned upward to the dome, which stood just ahead of the cab. Valve gear appears to have been Walschaert and the large spark-arresting stack signified the locomotives' forested destination.
| Specifications | |
|---|---|
| Class | 750 |
| Locobase ID | 9516 |
| Railroad | Oregon Short Line |
| Whyte | 4-6-0 |
| Road Numbers | 750-757 |
| Gauge | Std |
| Builder | Cooke |
| Year | 1899 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 13.50' |
| Engine Wheelbase | 23.87' |
| Ratio of driving wheelbase to overall engine wheebase | 0.57 |
| Overall Wheelbase (engine & tender) | 52.12' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 143000 lbs |
| Engine Weight | 171000 lbs |
| Tender Light Weight | |
| Total Engine and Tender Weight | 75000 lbs |
| Tender Water Capacity | 4500 gals |
| Tender Fuel Capacity (oil/coal) | 10 tons |
| Minimum weight per yard of rail on which locomotive could run | 79.44 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 57" |
| Boiler Pressure | 200 psi |
| Cylinders (dia x stroke) | 20" x 28" |
| Tractive Effort | 33404 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.28 |
| Heating Ability | |
| Firebox Area | 185 sq. ft |
| Grate Area | 30 sq. ft |
| Evaporative Heating Surface | 2538 |
| Superheating Surface | |
| Combined Heating Surface | 2538 |
| Evaporative Heating Surface/Cylinder Volume | 249.29 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 6000 |
| Same as above plus superheater percentage | 6000 |
| Same as above but substitute firebox area for grate area | 37000 |
| Power L1 | 6462.67 |
| Power MT | 298.90 |
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