South Georgia 4-6-0 "Ten-Wheeler" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 12284)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 21, p. 216. See also Donald R. Hensley, Jr., "The South Georgia Railway", archived at TapLines [] . Works number was 15987 in June 1898.

The SG originally ran from Heartpine, Ga to Quitman, then to Greenville, Fla, 50 miles away from its origin. It was later known as the South Georgia & West Coast, although its incorporation papers were never formally changed. By 1904, the West Coast leg had been extended to Perry, Fla, 76 miles away.

The 7 was lettered for the South Georgia. In 1906, the 7 was sold to the Kirby Planing Mill. It later operated on the Lakeland Railroad.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID12284
RailroadSouth Georgia
Number in Class1
Road Numbers7
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.75 / 3.58
Engine Wheelbase (ft / m)21.90 / 6.68
Ratio of driving wheelbase to overall engine wheelbase 0.54
Overall Wheelbase (engine & tender) (ft / m)45.25 / 13.79
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)50,000 / 22,680
Engine Weight (lbs / kg)70,000 / 31,752
Tender Loaded Weight (lbs / kg)60,000 / 27,216
Total Engine and Tender Weight (lbs / kg)130,000 / 58,968
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)28 / 14
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 1270
Boiler Pressure (psi / kPa)160 / 11.40
High Pressure Cylinders (dia x stroke) (in / mm)14" x 22" / 356x559
Tractive Effort (lbs / kg)11,729 / 5320.19
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.26
Heating Ability
Tubes (number - dia) (in / mm)131 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.23 / 3.73
Firebox Area (sq ft / m2)79.50 / 7.39
Grate Area (sq ft / m2)12.20 / 1.13
Evaporative Heating Surface (sq ft / m2)912 / 84.76
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)912 / 84.76
Evaporative Heating Surface/Cylinder Volume232.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1952
Same as above plus superheater percentage1952
Same as above but substitute firebox area for grate area12,720
Power L14454
Power MT589.16

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Wes Barris