Copper River Land Company 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 13703)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, p. 233. Works number was 35873 in January 1911.

Copper River asked for a locomotive that could negotiate 3% grades and 250-ft radius curves on rails weighing 55-60 lb/yard (27.5-30 kg/metre). This middle-range logging Prairie was the result. For some reason, the spec was emphatic that "Design and construction of boiler to be given special attention".

Marathon County, Wisconsin hosted several railroads, including this line, which was owned by U S Leather. At some point, the CRLC gave title of the 101 to US Leather's associated Rib Lake Lumber Company.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13703
RailroadCopper River Land Company
Number in Class1
Road Numbers101
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 8.33'
Engine Wheelbase23.83'
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender)46'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers88000 lbs
Engine Weight119000 lbs
Tender Light Weight70000 lbs
Total Engine and Tender Weight189000 lbs
Tender Water Capacity3500 gals
Tender Fuel Capacity (oil/coal)7 tons
Minimum weight of rail (calculated)49 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure180 psi
Cylinders (dia x stroke)17" x 24"
Tractive Effort24118 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.65
Heating Ability
Firebox Area116 sq. ft
Grate Area16 sq. ft
Evaporative Heating Surface1556 sq. ft
Superheating Surface
Combined Heating Surface1556 sq. ft
Evaporative Heating Surface/Cylinder Volume246.79
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2880
Same as above plus superheater percentage2880
Same as above but substitute firebox area for grate area20880
Power L14472
Power MT336.10

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