Itasca Lumber/M&RR RR 2-6-0 "Mogul" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Itasca (Locobase 2617)

Data from Catalogue Descriptive of Simple and Compound Locomotives built by Brooks Locomotive Works, Dunkirk, NY (Buffalo, NY: Matthew-Northrup Company, 1899).

Works number was 2952.

It's hard to believe that this is a standard-gauge engine, but the catalogue insists on it. This pint-size Mogul served in Minnesota, first for Itasca Lumber and later for the mystically named Minneapolis & Rainy River RR (which was nicknamed the Gut and Liver Route -- so much for mysticism).

Specifications by Steve Llanso of Sweat House Media
Locobase ID2617
RailroadItasca Lumber/M&RR RR
Number in Class1
Road Numbers2
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)11
Engine Wheelbase (ft)17.67
Ratio of driving wheelbase to overall engine wheebase 0.62
Overall Wheelbase (engine & tender) (ft)40.04
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)56,000
Engine Weight (lbs)66,500
Tender Loaded Weight (lbs)63,000
Total Engine and Tender Weight (lbs)129,500
Tender Water Capacity (gals)3000
Tender Fuel Capacity (oil/coal) (gals/tons)6
Minimum weight of rail (calculated) (lb/yd)31
Geometry Relating to Tractive Effort
Driver Diameter (in)42
Boiler Pressure (psi)150
High Pressure Cylinders (dia x stroke) (in)14" x 22"
Tractive Effort (lbs)13,090
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28
Heating Ability
Firebox Area (sq ft)75
Grate Area (sq ft)12.10
Evaporative Heating Surface (sq ft)664
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)664
Evaporative Heating Surface/Cylinder Volume169.40
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1815
Same as above plus superheater percentage1815
Same as above but substitute firebox area for grate area11,250
Power L12783
Power MT328.69

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