Silverton Northern 2-8-0 "Consolidation" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 12282)

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 Sweat House Media
Class3
Locobase ID12,282
RailroadSilverton Northern
CountryUSA
Whyte2-8-0
Number in Class2
Road Numbers3-4
Gauge3'
Number Built2
BuilderBurnham, Williams & Co
Year1904
Valve GearStephenson
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 wheebase 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 / ML/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 / 11
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
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 Volume217.44
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2240
Same as above plus superheater percentage2240
Same as above but substitute firebox area for grate area14,000
Power L13073
Power MT430.15

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