Saginaw & Manistee Lumber Company 2-6-0 "Mogul" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class August Lindstrom (Locobase 11493)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volumes 26, p. 268 and 31, p. 107. Works numbers were 23883 in March 1904 and 32249 in November 1907.

For some reason the first of these two little Moguls carried the builder's number on the number plate - certainly inflated the public image of the rolling stock of this Williams, Ariz lumber railroad. The 3's specifications show a heavier engine with a relatively precise adhesion weight estimate of 90,850 lb and an engine weight of 106,730 lb.

The S & ML of Arizona was a subsidiary of the Michigan lumber company; it obtained a lease of forest lands on the northern rim of the Grand Canyon in 1911 and these 2-6-0s operated in the high desert well into the 1950s.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassAugust Lindstrom
Locobase ID11493
RailroadSaginaw & Manistee Lumber Company
Number in Class2
Road Numbers23883 / 2-3
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.50 / 3.51
Engine Wheelbase (ft / m)19.33 / 5.89
Ratio of driving wheelbase to overall engine wheelbase 0.59
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)86,000 / 39,009
Engine Weight (lbs / kg)102,000 / 46,266
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)202,000 / 91,625
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)48 / 24
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 1270
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)23,795 / 10793.24
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.61
Heating Ability
Tubes (number - dia) (in / mm)200 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11 / 3.35
Firebox Area (sq ft / m2)118.90 / 11.05
Grate Area (sq ft / m2)20.70 / 1.92
Evaporative Heating Surface (sq ft / m2)1263 / 117.38
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1263 / 117.38
Evaporative Heating Surface/Cylinder Volume178.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3726
Same as above plus superheater percentage3726
Same as above but substitute firebox area for grate area21,402
Power L13941
Power MT303.08

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