Portland & Vancouver 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 11608)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 56. Works numbers were 9944-9945 in April 1889.

These were steam dummies that pulled cars on Union Avenue of Portland to the Columbia River. The route was electrified in 1892 and these were retired. A fire in October 1896 apparently wrecked both engines.

Specifications by Steve Llanso of Sweat House Media
Locobase ID11608
RailroadPortland & Vancouver
Number in Class2
Road Numbers2-3
Number Built2
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase5'
Engine Wheelbase18.08'
Ratio of driving wheelbase to overall engine wheebase 0.28
Overall Wheelbase (engine & tender)18.08'
Axle Loading (Maximum Weight per Axle)14520 lbs
Weight on Drivers27800 lbs
Engine Weight42690 lbs
Tender Light Weight
Total Engine and Tender Weight
Tender Water Capacity500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)23 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter39"
Boiler Pressure130 psi
Cylinders (dia x stroke)12" x 16"
Tractive Effort6528 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.26
Heating Ability
Firebox Area
Grate Area 7.50 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 Computation975
Same as above plus superheater percentage975
Same as above but substitute firebox area for grate area0
Power L10
Power MT0

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