Bear Harbor Lumber 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 12266)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 21, p.161. Works number was 15832 in April 1898.

A small double-ended, wood-burning saddle tank for the standard gauge, which allowed the grate to reach the usual width of 34 3/8". BHL of Moody, California later became South Humboldt Lumber. The 2 was retired in 1941 and sold in 1979 to Northern Counties Logging Interpretive for possible restoration.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12266
RailroadBear Harbor Lumber
Number in Class1
Road Numbers2
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 5.50'
Engine Wheelbase17.50'
Ratio of driving wheelbase to overall engine wheebase 0.31
Overall Wheelbase (engine & tender)17.50'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers32000 lbs
Engine Weight48000 lbs
Tender Light Weight
Total Engine and Tender Weight48000 lbs
Tender Water Capacity600 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)27 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter42"
Boiler Pressure160 psi
Cylinders (dia x stroke)11" x 18"
Tractive Effort7053 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.54
Heating Ability
Firebox Area42.70 sq. ft
Grate Area 8.70 sq. ft
Evaporative Heating Surface382 sq. ft
Superheating Surface
Combined Heating Surface382 sq. ft
Evaporative Heating Surface/Cylinder Volume192.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1392
Same as above plus superheater percentage1392
Same as above but substitute firebox area for grate area6832
Power L13369
Power MT464.21

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