United States Government 0-4-2 Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class General Ludington (Locobase 11550)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University Vol 26, p. 28. Works number was 22739 in August 1903.

Locobase notices that a popular Baldwin narrow-gauge tank-locomotive design at the turn of the century used 9" x 14" cylinders and 30" diameter drivers. In the instance of the General Ludington, however, the particular bit of railway was standard gauge. [General M I Ludington held the title of Quartermaster General during the 1898 Spanish-American War. Outfitting a suddenly assembled army of volunteers earned him at least his name on a little engine.]

Specifications by Steve Llanso of Sweat House Media
ClassGeneral Ludington
Locobase ID11,550
RailroadUnited States Government (QMD)
CountryUSA
Whyte0-4-2T
Number in Class1
Road Numbers1
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1903
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)10 / 3.05
Ratio of driving wheelbase to overall engine wheebase 0.50
Overall Wheelbase (engine & tender) (ft / m)10 / 3.05
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)21,000 / 9525
Engine Weight (lbs / kg)26,000 / 11,793
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)26,000
Tender Water Capacity (gals / ML)300 / 1.14
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)18 / 9
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)30 / 762
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)9" x 14" / 229x356
Tractive Effort (lbs / kg)4820 / 2186.32
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.36
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2) 7.30 / 0.68
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 Computation1095
Same as above plus superheater percentage1095
Same as above but substitute firebox area for grate area
Power L1
Power MT