Central of Georgia 2-6-6-2 "Mallet Mogul" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class ML (Locobase 7111)

Data from the CofGA 11 - 1925 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 59038-59047

These light Mallets served as pushers on the Sylacauga grade in Alabama, but proved to be overpowered for the Central. They were traded to the Illinois Central in 1926 for some Santa Fes. That railroad, which had gained control of the C of Ga in 1907, operated them as 6000-6009 for about 10 years before scrapping them.

See the Georgia Encyclopedia online -- http://www.georgiaencyclopedia.org/nge/Article.jsp?path=/Transportation/LandTransportation/Railroads&id=h-1282 (accessed 14 November 2005) -- for more information about the Central of Georgia.

Specifications by Steve Llanso of Sweat House Media
ClassML
Locobase ID7111
RailroadCentral of Georgia (CofGa)
CountryUSA
Whyte2-6-6-2
Number in Class10
Road Numbers1901-1910/ 6000-6009
GaugeStd
Number Built10
BuilderAlco
Year1919
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.33 / 3.15
Engine Wheelbase (ft / m)31.17 / 9.50
Ratio of driving wheelbase to overall engine wheebase 0.33
Overall Wheelbase (engine & tender) (ft / m)84.46 / 25.74
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)370,000 / 167,829
Engine Weight (lbs / kg)438,000 / 198,674
Tender Loaded Weight (lbs / kg)182,500 / 82,781
Total Engine and Tender Weight (lbs / kg)620,500 / 281,455
Tender Water Capacity (gals / ML)9000 / 34.09
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)17 / 15.50
Minimum weight of rail (calculated) (lb/yd / kg/m)103 / 51.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57 / 1448
Boiler Pressure (psi / kPa)210 / 14.50
High Pressure Cylinders (dia x stroke) (in / mm)24" x 32" / 610x813
Low Pressure Cylinders (dia x stroke) (in / mm)38" x 32" / 965x813
Tractive Effort (lbs / kg)82,524 / 37432.30
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.48
Heating Ability
Firebox Area (sq ft / m2)397 / 36.90
Grate Area (sq ft / m2)76.20 / 7.08
Evaporative Heating Surface (sq ft / m2)5069 / 471.10
Superheating Surface (sq ft / m2)1180 / 109.67
Combined Heating Surface (sq ft / m2)6249 / 580.77
Evaporative Heating Surface/Cylinder Volume302.53
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation16,002
Same as above plus superheater percentage19,042
Same as above but substitute firebox area for grate area99,210
Power L18394
Power MT300.09

Reference