Wilson Cypress Company 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 14039)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 45, p. 24. Works number was 41130 in January 1914.

After the Wilsons had bought local lumber operations from the Tilghmans in Palatka, Fla, they put down a logging camp at nearby Sunday Bluff. Their first motive power was a stud of 0-4-4T Forneys that formerly pulled trains on the New York Elevated. Within a decade and in the years when the Wilson Cypress Company was harvesting over one billion feet of timber per year, it bought this logging Prairie to help move the goods.

! By 1926 the Wilson Cypress Company had become one of the largest lumber manufactures in the world.

Specifications by Steve Llanso of Sweat House Media
Locobase ID14039
RailroadWilson Cypress Company
Number in Class1
Road Numbers3
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 7.83'
Engine Wheelbase20.58'
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender)39.77'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers40000 lbs
Engine Weight55000 lbs
Tender Light Weight40000 lbs
Total Engine and Tender Weight95000 lbs
Tender Water Capacity2000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)22 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter36"
Boiler Pressure180 psi
Cylinders (dia x stroke)12" x 16"
Tractive Effort9792 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08
Heating Ability
Firebox Area56 sq. ft
Grate Area14 sq. ft
Evaporative Heating Surface433 sq. ft
Superheating Surface
Combined Heating Surface433 sq. ft
Evaporative Heating Surface/Cylinder Volume206.74
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2520
Same as above plus superheater percentage2520
Same as above but substitute firebox area for grate area10080
Power L13677
Power MT607.98

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