Savannah, Americus & Montgomery 2-6-0 "Mogul" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class Ocmulgee (Locobase 11575)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 13.

Works numbers were 9889-9890 in March 1889. For railroad information, see the comprehensive Railroad History of Georgia website at http://www.railga.com/sam.html, last accessed 8 August 2010 and http://samshortline.com/item/5414 . See Locobase 11856 for a short account of the Americus, Preston & Lumpkin. When the railroad extended service east and west from its original APL territory, operated steamboats on the Altamaha and Ocmulgee, converted to standard gauge in 1888, and changed its name to the Savannah, Americus & Montgomery, its impact was felt even more keenly. "The effect of the new railroadªs arrival in the rural areas east and west of Americus was immediate," says the web account. "Villages and towns sprang up overnight. Many were planned directly by the railroad and its holding company." By 1892, the SA & M owned 5 riverboats, several more branches, and had leased the 35-mile Albany & Northern.

These small Moguls, the latest in a string of such engines, they were delivered to the SA & M after it was formed from the reorganized AP & L in December 1888. The wood-burning engines were also surprisingly small considering the many other 2-6-0s then be procured by standard-gauge railroads in the US. In addition to the Ocmulgee, Baldwin delivered the Thronoteeskee.

The Panic of 1893 distressed this road enough for it to suffer foreclosure in 1895 and be sold and reorganized as the Georgia & Alabama. When the Seaboard Air Line took over the G & A a few years later, these 2-6-0s were classed "Odd", then sold to W E Boone in January 1901.

Specifications by Steve Llanso of Sweat House Media
ClassOcmulgee
Locobase ID11,575
RailroadSavannah, Americus & Montgomery
CountryUSA
Whyte2-6-0
Number in Class2
Road Numbers101-102
GaugeStd
Number Built2
BuilderBurnham, Parry, Williams & Co
Year1889
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66
Engine Wheelbase (ft / m)18.83 / 5.74
Ratio of driving wheelbase to overall engine wheebase 0.64
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)17,860 / 8101
Weight on Drivers (lbs / kg)48,000 / 21,772
Engine Weight (lbs / kg)60,000 / 27,216
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2000 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)27 / 13.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)14" x 22" / 356x559
Tractive Effort (lbs / kg)10,829 / 4911.96
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.43
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)11.60 / 1.08
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1508
Same as above plus superheater percentage1508
Same as above but substitute firebox area for grate area
Power L1
Power MT