Willamette Bridge Railway 0-6-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Sunnyside (Locobase 11583)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 17.

Works numbers were 9847 in March 1889 and 9973 in March.

These two tank engines were ordered by the Pacific Bridge Company on behalf of the WBR of Portland, Ore. As they entered service, they bore the names of destinations: Sunnyside on #2, Mount Tabor on #3.

The WBR was transformed into the City & Suburban Railway in September 1891. during the same period, both dummies were converted to 0-4-2Ts (most likely to reduce the wheelbase). In 1900, both were sold to Star Logging & Lumbering, which soon sold them to Yeon & Pelton, from which they went to Portland Lumber in 1905, and to Japan in 1908.

Specifications by Steve Llanso of Sweat House Media
Locobase ID11583
RailroadWillamette Bridge Railway
Number in Class2
Road Numbers2-3
Number Built2
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 4.50'
Engine Wheelbase11.67'
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender)11.67'
Axle Loading (Maximum Weight per Axle)16280 lbs
Weight on Drivers28000 lbs
Engine Weight35350 lbs
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity450 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)16 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter36"
Boiler Pressure130 psi
Cylinders (dia x stroke)11" x 16"
Tractive Effort5942 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.71
Heating Ability
Firebox Area
Grate Area 9.60 sq. ft
Evaporative Heating Surface
Superheating Surface
Combined Heating Surface0
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1248
Same as above plus superheater percentage1248
Same as above but substitute firebox area for grate area0
Power L10
Power MT0

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