Cape Girardeau Northern 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 12 (Locobase 13734)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 251 . See Locobase 13735 for a history of the CGN and read James Baughn's Pavement Ends installment on "Cape Girardeau's most obscure landmark," SEMissourian, posted 24 March 2010 and retrieved from, last accessed 16 January 2012. Works numbers were 41167-41168 in February 1914.

These didn't remain with the CGN for long before going off to the Saint Louis Southwestern and very soon to the San Antonio, Uvalde & Gulf as their 8-9. Eventually, the two were placed in their own class E-63 by the Missouri Pacific and numbered 928-929.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13734
RailroadCape Girardeau Northern
Number in Class2
Road Numbers12, 14
Number Built2
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase 9.08'
Engine Wheelbase24.29'
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender)47.67'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers68000 lbs
Engine Weight112000 lbs
Tender Light Weight88000 lbs
Total Engine and Tender Weight200000 lbs
Tender Water Capacity4000 gals
Tender Fuel Capacity (oil/coal)8 tons
Minimum weight of rail (calculated)57 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter62"
Boiler Pressure160 psi
Cylinders (dia x stroke)18" x 24"
Tractive Effort17057 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.99
Heating Ability
Firebox Area127 sq. ft
Grate Area18.10 sq. ft
Evaporative Heating Surface1662 sq. ft
Superheating Surface
Combined Heating Surface1662 sq. ft
Evaporative Heating Surface/Cylinder Volume235.12
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2896
Same as above plus superheater percentage2896
Same as above but substitute firebox area for grate area20320
Power L15373
Power MT348.39

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