Mineral Range 2-6-0 "Mogul" Locomotives of 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.

Specifications by Steve Llanso of Sweat House Media
ClassOtetianiRed Jacket
Locobase ID11,773 11,622
RailroadMineral RangeMineral Range
CountryUSAUSA
Whyte2-6-02-6-0
Number in Class11
Road Numbers48
Gauge3'3'
Number Built11
BuilderBurnham, Parry, Williams & CoBurnham, Williams & Co
Year18801892
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 9.6711.75
Engine Wheelbase (ft)15.6718.83
Ratio of driving wheelbase to overall engine wheebase 0.62 0.62
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)42,00063,000
Engine Weight (lbs)50,00073,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)16002000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)2335
Geometry Relating to Tractive Effort
Driver Diameter (in)3844
Boiler Pressure (psi)130180
High Pressure Cylinders (dia x stroke) (in)14" x 16"9.5" x 22" (1)
Low Pressure Cylinders (dia x stroke) (in)16" x 22" (1)
Tractive Effort (lbs)91195105
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.6112.34
Heating Ability
Firebox Area (sq ft)6687
Grate Area (sq ft)12.5013.80
Evaporative Heating Surface (sq ft)6261074
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)6261074
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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