Mineral Range 2-6-0 "Mogul" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Otetiani (Locobase 11773)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 10, p. 44. .

Works number was 5219 in August 1880.

Increasingly isolated in a standard-gauge world, this little Mogul left the MR in 1895 and went to the Duluth, South Shore & Atlantic. But the DSS & A converted to standard-gauge in 1901 and the 4 moved on to the Cadillac Handle Company in Cadillac, Mich. The CHC produced wood handles - as many as 125,000 broom handles in a given day.

Class Red Jacket (Locobase 11622)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 18, p. 1. See also John A Hall, "In the Northern Peninsula of Michigan," Locomotive Engineering, Volume 8, Number 2 (February 1895), pp. 67-71. Works number was 12677 in May 1892.

This was a pretty sizable Mogul for the 3-foot gauge for a start-up road in Michigan's Copper Country. The area included the Keweenaw Peninsula , wihch extends well into Lake Superior on the Upper Peninsula north of Wisconsin. Exploitation of the area's extensive reserves prompted a great deal of railroad construction, then mostly narrow gauge, when the quality of its copper ore became well-established. Officially known as the Mineral Range & L'Anse Bay Railroad, one of the most important lines originally extended only the 13 miles between Calumet and Osceola.

Sold in 1901 to the Hancock & Calumet as their #40 when the MR was converted to the standard gauge. The H & C sold #40 two years later to the Missouri Southern, which renumbered it again as 6.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassOtetianiRed Jacket
Locobase ID11,773 11,622
RailroadMineral RangeMineral Range
Number in Class11
Road Numbers48
Number Built11
BuilderBurnham, Parry, Williams & CoBurnham, Williams & Co
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.67 / 2.9511.75 / 3.58
Engine Wheelbase (ft / m)15.67 / 4.7818.83 / 5.74
Ratio of driving wheelbase to overall engine wheebase 0.62 0.62
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)42,000 / 19,05163,000 / 28,576
Engine Weight (lbs / kg)50,000 / 22,68073,000 / 33,112
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1600 / 6.062000 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.5035 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)38 / 96544 / 1118
Boiler Pressure (psi / kPa)130 / 9180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)14" x 16" / 356x4069.5" x 22" / 241x559 (1)
Low Pressure Cylinders (dia x stroke) (in / mm)16" x 22" / 406x559 (1)
Tractive Effort (lbs / kg)9119 / 4136.315105 / 2315.59
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.6112.34
Heating Ability
Firebox Area (sq ft / m2)66 / 6.1387 / 8.09
Grate Area (sq ft / m2)12.50 / 1.1613.80 / 1.28
Evaporative Heating Surface (sq ft / m2)626 / 58.181074 / 99.81
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)626 / 58.181074 / 99.81
Evaporative Heating Surface/Cylinder Volume219.591190.11
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation16252484
Same as above plus superheater percentage16252484
Same as above but substitute firebox area for grate area858015,660
Power L127617781
Power MT434.78816.86

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