W T Smith Lumber Company 2-6-0 "Mogul" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 12861)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 28, p. 164. Works numbers were 27039 in December 1905 and 31643 in September 1907.

Logging roads had distinctive characteristics and one of them, according to the specs, was "average speed 15 miles per hour, sometimes 30". One supposes the 30-mph speed for these wood-burners must have been on the straightest, flattest sections. These were pretty big and powerful 2-6-0s for the 3-foot gauge.

Both served W T Smith until they were scrapped in 1944.

Class 7 (Locobase 11088)

Data from Logging Locomotives 1913 (Philadelphia, Pa: Baldwin Locomotive Works, 1913), p 13 and DeGolyer, Volume 41, . 7. Works numbers were 38303, 38409 in September 1912.

This was a pretty big wood-burning Mogul design. When the WT Smith company of Chapman, Ala bought the standard-gauge Empire Lumber Company in 1912, the motive power had to follow suit.

#8 was scrapped in 1948, but #7 was bought by the Union Camp Corporation. Later put on display in an increasingly dilapedated condition in Kershaw, Ala.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12,861 11,088
RailroadW T Smith Lumber CompanyW T Smith Lumber Company
Number in Class22
Road Numbers5-67-8
Number Built22
BuilderBurnham, Williams & CoBaldwin
Valve GearWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 9.3311
Engine Wheelbase (ft)16.3318
Ratio of driving wheelbase to overall engine wheebase 0.57 0.61
Overall Wheelbase (engine & tender) (ft)43.12
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)65,00073,000
Engine Weight (lbs)73,00086,700
Tender Loaded Weight (lbs)60,00070,300
Total Engine and Tender Weight (lbs)133,000157,000
Tender Water Capacity (gals)30003500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)3641
Geometry Relating to Tractive Effort
Driver Diameter (in)4444
Boiler Pressure (psi)160160
High Pressure Cylinders (dia x stroke) (in)16" x 24"16" x 24"
Tractive Effort (lbs)18,99118,991
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.42 3.84
Heating Ability
Firebox Area (sq ft)75102
Grate Area (sq ft)15.3016.30
Evaporative Heating Surface (sq ft)10841087
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)10841087
Evaporative Heating Surface/Cylinder Volume194.09194.63
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation24482608
Same as above plus superheater percentage24482608
Same as above but substitute firebox area for grate area12,00016,320
Power L130653355
Power MT311.87303.97


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