Boiler had Coffin feedwater heater, valve motion limited cutoff, duplex stoker. Don't know much about this engine. Note how much lighter for its tractive effort this engine was than many others. (It had a very low factor of adhesion -- was it prone to slipping?). In any event, it was the last freight steam to operate on the TH&B, being scrapped in 1953.
| Specifications | |
|---|---|
| Class | As |
| Locobase ID | 62 |
| Railroad | Toronto, Hamilton, & Buffalo |
| Whyte | 2-8-4 |
| Road Numbers | 201-202 |
| Gauge | Std |
| Builder | Alco |
| Year | 1928 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase | 16.80' |
| Engine Wheelbase | 39.70' |
| Ratio of driving wheelbase to overall engine wheebase | 0.42 |
| Overall Wheelbase (engine & tender) | 75.60' |
| Axle Loading (Maximum Weight per Axle) | |
| Weight on Drivers | 249500 lbs |
| Engine Weight | 383000 lbs |
| Tender Light Weight | 228000 lbs |
| Total Engine and Tender Weight | 611000 lbs |
| Tender Water Capacity | 12000 gals |
| Tender Fuel Capacity (oil/coal) | 16 tons |
| Minimum weight per yard of rail on which locomotive could run | 103.96 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 63" |
| Boiler Pressure | 240 psi |
| Cylinders (dia x stroke) | 28" x 30" |
| Tractive Effort | 76160 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.28 |
| Heating Ability | |
| Firebox Area | 338 sq. ft |
| Grate Area | 100.30 sq. ft |
| Evaporative Heating Surface | 5080 |
| Superheating Surface | 2242 |
| Combined Heating Surface | 7322 |
| Evaporative Heating Surface/Cylinder Volume | 237.60 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 24072 |
| Same as above plus superheater percentage | 31442.86 |
| Same as above but substitute firebox area for grate area | 105958.98 |
| Power L1 | 31762.42 |
| Power MT | 1122.63 |
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