Unusual Prairie that operated in the California mountains on this logging railroad's Angels Camp branch.
In 1940, the Western Pacific bought the little mountaineer to operate on its Tidewater Southern subsidiary. The Tidewater Southern website -- http://www.tidewatersouthern.com/contents/motivepower/steam/Baldwin_2-6-2_132/baldwin_2-6-2_132.htm, accessed 3 July 2006, believes the 132 was the last steamer to operate in revenue service on the WP's lines
| Specifications | |
|---|---|
| Class | 32 / TF-20 |
| Locobase ID | 7626 |
| Railroad | Sierra Railway |
| Whyte | 2-6-2 |
| Road Numbers | 32 / 132 |
| Gauge | Std |
| Builder | Baldwin |
| Year | 1923 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase | 9' |
| Engine Wheelbase | 24.50' |
| Ratio of driving wheelbase to overall engine wheebase | 0.37 |
| Overall Wheelbase (engine & tender) | 46.96' |
| Axle Loading (Maximum Weight per Axle) | 27700 lbs |
| Weight on Drivers | 83100 lbs |
| Engine Weight | 106200 lbs |
| Tender Light Weight | 78526 lbs |
| Total Engine and Tender Weight | 184726 lbs |
| Tender Water Capacity | 3760 gals |
| Tender Fuel Capacity (oil/coal) | 1500 gals |
| Minimum weight per yard of rail on which locomotive could run | 46 lb rail |
| Geometry Relating to Tractive Effort | |
| Driver Diameter | 46" |
| Boiler Pressure | 180 psi |
| Cylinders (dia x stroke) | 16" x 24" |
| Tractive Effort | 20435 lbs |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.07 |
| Heating Ability | |
| Firebox Area | 93 sq. ft |
| Grate Area | 17.90 sq. ft |
| Evaporative Heating Surface | 1114 |
| Superheating Surface | 241 |
| Combined Heating Surface | 1355 |
| Evaporative Heating Surface/Cylinder Volume | 199.46 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3222 |
| Same as above plus superheater percentage | 3802 |
| Same as above but substitute firebox area for grate area | 19753 |
| Power L1 | 9261 |
| Power MT | 737.08 |
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