Pacific Lumber Company 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 13615)

Data from Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, p.55. Works number was 24317 in June 1904.

Typical wood-burning double-ender tank for the Scotia, Calif redwood logger. Unlike the later logging Prairies, this engine was sold after a short time to the Holmes-Eureka Lumber Company.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13,615
RailroadPacific Lumber Company
Number in Class1
Road Numbers5 / 25
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)7
Engine Wheelbase (ft)22.67
Ratio of driving wheelbase to overall engine wheebase 0.31
Overall Wheelbase (engine & tender) (ft)22.67
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)67,000
Engine Weight (lbs)94,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)94,000
Tender Water Capacity (gals)1500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)56
Geometry Relating to Tractive Effort
Driver Diameter (in)44
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)16" x 24"
Tractive Effort (lbs)18,991
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.53
Heating Ability
Firebox Area (sq ft)77.70
Grate Area (sq ft)14.40
Evaporative Heating Surface (sq ft)1062
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1062
Evaporative Heating Surface/Cylinder Volume190.15
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2304
Same as above plus superheater percentage2304
Same as above but substitute firebox area for grate area12,432
Power L13047
Power MT200.52

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