Marietta & North Georgia 2-8-0 "Consolidation" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 25 (Locobase 12056)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 18, p 124. Works number was 13108 in December 1892

This lone Vauclain compound Consolidation went with the M&NG when it was transformed into the Atlanta, Knoxville & Northern. In 1898, the 25 was sold to the Texas Central and renumbered 112; it was renumbered 681 when the TC was absorbed by the Missouri-Kansas-Texas. In 1914, the Katy rebuilt the engine with 19" x 24" simple-expanson cylinders.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12,056
RailroadMarietta & North Georgia
Number in Class1
Road Numbers25
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)13.67
Engine Wheelbase (ft)21.58
Ratio of driving wheelbase to overall engine wheebase 0.63
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)106,000
Engine Weight (lbs)120,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)3500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)44
Geometry Relating to Tractive Effort
Driver Diameter (in)50
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)13" x 24"
Low Pressure Cylinders (dia x stroke) (in)22" x 24"
Tractive Effort (lbs)18,398
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.76
Heating Ability
Firebox Area (sq ft)142.40
Grate Area (sq ft)17.10
Evaporative Heating Surface (sq ft)1726
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1726
Evaporative Heating Surface/Cylinder Volume468.13
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3078
Same as above plus superheater percentage3078
Same as above but substitute firebox area for grate area25,632
Power L13463
Power MT288.10

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