Scotch Manufacturing / Southern Missouri 2-6-0 "Mogul" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 13120)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 30, p. 198. . Works number was 30267 in February 1907.

William C McLauchlin's Scotch Manufacturing Company of Milligan, Fla dealt in wood products.

Some time before the mid-1920s, the SMC sold the 1 to locomotive rebuilder/reseller Birmingham Rail & Locomotive. Equitable Equipment bought the 1 from BR & L in July 1925 on behalf of Swift Hunter Lumber Company of Atmore, Ala, which renumbered it #30. SHLC held on to the 30 for less than 3 years before selling to another rebuilder/reseller, Georgia Car & Locomotive. GC & L found a buyer in Barfield Lumber, located in Polk City, Fla, not too far from its original owner.

Class 21 (Locobase 12617)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 25, p. 13. Works numbers were 20799-20800, 20843 in August 1902 and 22357-22358 in June 1903.

Later operated by Illinois Southern, which suffered bankruptcy and was succeeded in 1921 the Missouri-Illinois. In the 1920s, several of the class went to work for the Arkansas Southern.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13,120 12,617
RailroadScotch ManufacturingSouthern Missouri
Number in Class15
Road Numbers121-25
Number Built15
BuilderBurnham, Williams & CoBurnham, Williams & Co
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)1112
Engine Wheelbase (ft)1919.92
Ratio of driving wheelbase to overall engine wheebase 0.58 0.60
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)69,000110,000
Engine Weight (lbs)80,000128,000
Tender Loaded Weight (lbs)60,000100,000
Total Engine and Tender Weight (lbs)140,000228,000
Tender Water Capacity (gals)30005000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)3861
Geometry Relating to Tractive Effort
Driver Diameter (in)4852
Boiler Pressure (psi)180180
High Pressure Cylinders (dia x stroke) (in)15" x 22"20" x 24"
Tractive Effort (lbs)15,77828,246
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.37 3.89
Heating Ability
Firebox Area (sq ft)90140.70
Grate Area (sq ft)16.5022.28
Evaporative Heating Surface (sq ft)10401654
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)10401654
Evaporative Heating Surface/Cylinder Volume231.13189.53
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation29704010
Same as above plus superheater percentage29704010
Same as above but substitute firebox area for grate area16,20025,326
Power L147684214
Power MT457.03253.37

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