Itasca Lumber/M&RR RR 2-6-0 "Mogul" Locomotives in 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).

Principal Dimensions 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 / m)11 / 3.35
Engine Wheelbase (ft / m)17.67 / 5.39
Ratio of driving wheelbase to overall engine wheelbase 0.62
Overall Wheelbase (engine & tender) (ft / m)40.04 / 12.20
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,000 / 25,401
Engine Weight (lbs / kg)66,500 / 30,164
Tender Loaded Weight (lbs / kg)63,000 / 28,576
Total Engine and Tender Weight (lbs / kg)129,500 / 58,740
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)6 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)14" x 22" / 356x559
Tractive Effort (lbs / kg)13,090 / 5937.53
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28
Heating Ability
Tubes (number - dia) (in / mm)126 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)9 / 2.74
Firebox Area (sq ft / m2)75 / 6.97
Grate Area (sq ft / m2)12.10 / 1.12
Evaporative Heating Surface (sq ft / m2)664 / 61.71
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)664 / 61.71
Evaporative Heating Surface/Cylinder Volume169.39
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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Wes Barris