Isle Royale Copper Company 2-6-0 "Mogul" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 13259)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 31, p. 172. Works number was 32612 in January 1908.

Isle Royale Copper Company was incorporated in 1899 to merge the Isle Royale Consolidated Mining Company and the Miners Copper Company. The amalgamated entity had mines in Houghton County in Michigan's Upper Peninsula. The 5-mile (8-km) railway joined the mine and its mills with a junction with the Duluth, South Shore & Atlantic and sported relatively gentle 9-degree (417 ft/127 metres radius) curves, but relatively severe 4% grades on 60-70 lb/yard (30-35 kg/metre) rails.

A "Hereafter" note recorded more than seven years later (19 May 1915) asked that the "Spring links to be strengthened, as those on 8 34 D402 have been breaking."

Specifications by Steve Llanso of Sweat House Media
Class3
Locobase ID13,259
RailroadIsle Royale Copper Company
CountryUSA
Whyte2-6-0
Number in Class1
Road Numbers3
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1908
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.17 / 3.40
Engine Wheelbase (ft / m)19.33 / 5.89
Ratio of driving wheelbase to overall engine wheebase 0.58
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)130,000 / 58,967
Engine Weight (lbs / kg)145,000 / 65,771
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)245,000 / 111,130
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)72 / 36
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)52 / 1321
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x660
Tractive Effort (lbs / kg)34,000 / 15422.16
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.82
Heating Ability
Firebox Area (sq ft / m2)178 / 16.54
Grate Area (sq ft / m2)24.70 / 2.29
Evaporative Heating Surface (sq ft / m2)1831 / 170.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1831 / 170.10
Evaporative Heating Surface/Cylinder Volume193.68
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4940
Same as above plus superheater percentage4940
Same as above but substitute firebox area for grate area35,600
Power L14989
Power MT253.82