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

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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
Class121
Locobase ID13,120 12,617
RailroadScotch ManufacturingSouthern Missouri
CountryUSAUSA
Whyte2-6-02-6-0
Number in Class15
Road Numbers121-25
GaugeStdStd
Number Built15
BuilderBurnham, Williams & CoBurnham, Williams & Co
Year19071902
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.3512 / 3.66
Engine Wheelbase (ft / m)19 / 5.7919.92 / 6.07
Ratio of driving wheelbase to overall engine wheebase 0.58 0.60
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)69,000 / 31,298110,000 / 49,895
Engine Weight (lbs / kg)80,000 / 36,287128,000 / 58,060
Tender Loaded Weight (lbs / kg)60,000 / 27,216100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)140,000 / 63,503228,000 / 103,419
Tender Water Capacity (gals / ML)3000 / 11.365000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)38 / 1961 / 30.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 121952 / 1321
Boiler Pressure (psi / kPa)180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 22" / 381x55920" x 24" / 508x610
Tractive Effort (lbs / kg)15,778 / 7156.7928,246 / 12812.19
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.37 3.89
Heating Ability
Firebox Area (sq ft / m2)90 / 8.36140.70 / 13.08
Grate Area (sq ft / m2)16.50 / 1.5322.28 / 2.07
Evaporative Heating Surface (sq ft / m2)1040 / 96.651654 / 153.72
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1040 / 96.651654 / 153.72
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