Portsmouth Lumber Manufacturing Company 0-4-2 Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Sue Barron (Locobase 12141)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 19, p. 36 and p. 168. Works number was 14222 in February 1895.

This tiny wood-burning logging tank was called by 3 names (officially) during its career. When it went from the PLMC to C R Johnson Lumber, it took the owner's name. Later, its sale to Richmond Cedar Works resulted in a partial recovery of its earlier name when it was renamed Sue.

Specifications by Steve Llanso of Sweat House Media
ClassSue Barron
Locobase ID12141
RailroadPortsmouth Lumber Manufacturing Company
Number in Class1
Road Numbers2
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 3.67'
Engine Wheelbase 9.58'
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender) 9.58'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers19000 lbs
Engine Weight23000 lbs
Tender Light Weight
Total Engine and Tender Weight23000 lbs
Tender Water Capacity250 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)16 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter28"
Boiler Pressure150 psi
Cylinders (dia x stroke)8" x 12"
Tractive Effort3497 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.43
Heating Ability
Firebox Area21.09 sq. ft
Grate Area 5.60 sq. ft
Evaporative Heating Surface155 sq. ft
Superheating Surface
Combined Heating Surface155 sq. ft
Evaporative Heating Surface/Cylinder Volume222.02
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation840
Same as above plus superheater percentage840
Same as above but substitute firebox area for grate area3164
Power L12611
Power MT605.92

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