Oconto Company 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 14057)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 45, p. 54. See also the Master List of Wisconsin Logging Roads archived at http://sassmaster.tripod.com/lang.html . Works number was 40946 in December 1913.

Oconto County is located on the western shore of Green Bay in northeastern Wisconsin. One of the largest single landowners in the county, the Oconto Company was the parent of the Nahma & Northern in northern Michigan.

Specifications by Steve Llanso of Sweat House Media
Locobase ID14057
RailroadOconto Company
Number in Class1
Road Numbers6
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase 9.33'
Engine Wheelbase25'
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender)47.50'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers81000 lbs
Engine Weight103000 lbs
Tender Light Weight60000 lbs
Total Engine and Tender Weight163000 lbs
Tender Water Capacity3000 gals
Tender Fuel Capacity (oil/coal)6 tons
Minimum weight of rail (calculated)45 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter46"
Boiler Pressure180 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort20435 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.96
Heating Ability
Firebox Area78 sq. ft
Grate Area15.90 sq. ft
Evaporative Heating Surface1329 sq. ft
Superheating Surface
Combined Heating Surface1329 sq. ft
Evaporative Heating Surface/Cylinder Volume237.96
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2862
Same as above plus superheater percentage2862
Same as above but substitute firebox area for grate area14040
Power L14247
Power MT346.78

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