Silverton Northern 2-8-0 "Consolidation" Locomotives of 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.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12,282
RailroadSilverton Northern
Number in Class2
Road Numbers3-4
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)10.83
Engine Wheelbase (ft)18.17
Ratio of driving wheelbase to overall engine wheebase 0.60
Overall Wheelbase (engine & tender) (ft)42.25
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)63,000
Engine Weight (lbs)72,000
Tender Loaded Weight (lbs)60,000
Total Engine and Tender Weight (lbs)132,000
Tender Water Capacity (gals)3000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)26
Geometry Relating to Tractive Effort
Driver Diameter (in)37
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)16" x 20"
Tractive Effort (lbs)18,819
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.35
Heating Ability
Firebox Area (sq ft)87.50
Grate Area (sq ft)14
Evaporative Heating Surface (sq ft)1012
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1012
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