Southern Lumber 4-6-0 "Ten-Wheeler" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 123 (Locobase 13058)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 30, p. . Works numbers were 30555 in April 1907.

Most of the orders recorded in Baldwin's books were filled for the original purchaser. But the 8 locomotives intended for the Morelia y Tacambaro in Guanajunto, Mexico were redirected to several other railroads.

This engine served SLC in Arkansas all of its working life. When it was retired, the SLC donated the 123 to the City of Warren, Ark

Principal Dimensions by Steve Llanso of Sweat House Media
Class123
Locobase ID13,058
RailroadSouthern Lumber
CountryUSA
Whyte4-6-0
Number in Class1
Road Numbers123
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1907
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.25 / 4.34
Engine Wheelbase (ft / m)24.92 / 7.60
Ratio of driving wheelbase to overall engine wheebase 0.57
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)88,000 / 39,916
Engine Weight (lbs / kg)120,000 / 54,431
Tender Loaded Weight (lbs / kg)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)200,000 / 90,718
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)49 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 1372
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)22,032 / 9993.56
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.99
Heating Ability
Firebox Area (sq ft / m2)144 / 13.38
Grate Area (sq ft / m2)17.30 / 1.61
Evaporative Heating Surface (sq ft / m2)1788 / 166.17
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1788 / 166.17
Evaporative Heating Surface/Cylinder Volume252.95
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3114
Same as above plus superheater percentage3114
Same as above but substitute firebox area for grate area25,920
Power L15748
Power MT432.01

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