Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 26, p. 297. Works numbers were 24109 in April 1904 and 27977 in April 1906.
This design was guaranteed "to haul 44 tons of 2,000 pounds up a straight 6% grade and 30 tons ...up a 6% grade combined with 30 degrees curve. These loads are based on 8 lbs frictional resistance and a speed of 7 or 8 miles per hour."
The SN RR sold the pair to the White Pass & Yukon in October 1942, which renumbered 22-23. They were scrapped in December 1945.
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | 3 |
Locobase ID | 12282 |
Railroad | Silverton Northern |
Country | USA |
Whyte | 2-8-0 |
Number in Class | 2 |
Road Numbers | 3-4 |
Gauge | 3' |
Number Built | 2 |
Builder | Burnham, Williams & Co |
Year | 1904 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 10.83 / 3.30 |
Engine Wheelbase (ft / m) | 18.17 / 5.54 |
Ratio of driving wheelbase to overall engine wheelbase | 0.60 |
Overall Wheelbase (engine & tender) (ft / m) | 42.25 / 12.88 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 63,000 / 28,576 |
Engine Weight (lbs / kg) | 72,000 / 32,659 |
Tender Loaded Weight (lbs / kg) | 60,000 / 27,216 |
Total Engine and Tender Weight (lbs / kg) | 132,000 / 59,875 |
Tender Water Capacity (gals / ML) | 3000 / 11.36 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 26 / 13 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 37 / 940 |
Boiler Pressure (psi / kPa) | 160 / 1100 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
Tractive Effort (lbs / kg) | 18,819 / 8536.16 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.35 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 154 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 11.81 / 3.60 |
Firebox Area (sq ft / m2) | 87.50 / 8.13 |
Grate Area (sq ft / m2) | 14 / 1.30 |
Evaporative Heating Surface (sq ft / m2) | 1012 / 94.05 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1012 / 94.05 |
Evaporative Heating Surface/Cylinder Volume | 217.63 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2240 |
Same as above plus superheater percentage | 2240 |
Same as above but substitute firebox area for grate area | 14,000 |
Power L1 | 3076 |
Power MT | 430.57 |