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 ID12282
RailroadSilverton Northern
Number in Class2
Road Numbers3-4
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase10.83'
Engine Wheelbase18.17'
Ratio of driving wheelbase to overall engine wheebase 0.60
Overall Wheelbase (engine & tender)42.25'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers63000 lbs
Engine Weight72000 lbs
Tender Light Weight60000 lbs
Total Engine and Tender Weight132000 lbs
Tender Water Capacity3000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)26 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter37"
Boiler Pressure160 psi
Cylinders (dia x stroke)16" x 20"
Tractive Effort18819 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.35
Heating Ability
Firebox Area87.50 sq. ft
Grate Area14 sq. ft
Evaporative Heating Surface1012 sq. ft
Superheating Surface
Combined Heating Surface1012 sq. ft
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 area14000
Power L13073
Power MT430.15

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