Wellington used this locomotive and another Mason from 1884 in a table of typical North American "American" engines. He gave no particulars about the railroad it served.
Data from Arthur Mellen Wellington, The Economic Theory of the Location of Railways: An Analysis of the Location of Railways (New York: Chapman & Hall, limited, 1887), 407.
Wellington used this locomotive and another Mason from 1873 (Locobase 8936) in a table of typical North American "American" engines. He gave no particulars about the railroad it served.
| Specifications | ||
|---|---|---|
| Class | ||
| Locobase ID | 8936 | 8937 |
| Railroad | unk | unk |
| Whyte | 4-4-0 | 4-4-0 |
| Road Numbers | ||
| Gauge | Std | Std |
| Builder | William Mason | William Mason |
| Year | 1873 | 1884 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase | 8' | 9' |
| Engine Wheelbase | 22' | 23.33' |
| Ratio of driving wheelbase to overall engine wheebase | 0.36 | 0.39 |
| Overall Wheelbase (engine & tender) | ||
| Axle Loading (Maximum Weight per Axle) | ||
| Weight on Drivers | 40000 lbs | 68000 lbs |
| Engine Weight | 62000 lbs | 102000 lbs |
| Tender Light Weight | ||
| Total Engine and Tender Weight | 0 | 0 |
| Tender Water Capacity | 2700 gals | 4300 gals |
| Tender Fuel Capacity (oil/coal) | ||
| Minimum weight per yard of rail on which locomotive could run | 33 lb rail | 57 lb rail |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter | 66" | 66" |
| Boiler Pressure | 120 psi | 120 psi |
| Cylinders (dia x stroke) | 17" x 24" | 18" x 24" |
| Tractive Effort | 10719 lbs | 12017 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.73 | 5.66 |
| Heating Ability | ||
| Firebox Area | 105 sq. ft | 145 sq. ft |
| Grate Area | 16.38 sq. ft | 18.90 sq. ft |
| Evaporative Heating Surface | 1011 | 1375 |
| Superheating Surface | ||
| Combined Heating Surface | 1011 | 1375 |
| Evaporative Heating Surface/Cylinder Volume | 160.35 | 194.52 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1966 | 2268 |
| Same as above plus superheater percentage | 1966 | 2268 |
| Same as above but substitute firebox area for grate area | 12600 | 17400 |
| Power L1 | 3216 | 3922 |
| Power MT | 354.50 | 254.31 |
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