Warrenton 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 15211)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 71, pp. 198+. Works number was 55467 in May 1922.

This engine had an even more unusual arrangement for an American locomotive than the 2-4-2T tank engine used by many logging companies. Tralling a tender, serving a mixed-traffic service, and arriving on the railroad so late in the steam era combine to make this a rare beast indeed. A photograph showing the 4 with its bi-directional suggests that it was really an 0-6-0 that the WRR wanted to be bi-directional.

Later in its career, the 4 served the Atlantic & Carolina, the Oats Lumber Company, and finally the Beaufort & Morehead.

Specifications by Steve Llanso of Sweat House Media
Locobase ID15211
Number in Class1
Road Numbers4
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase 7.50'
Engine Wheelbase23.50'
Ratio of driving wheelbase to overall engine wheebase 0.32
Overall Wheelbase (engine & tender)45.81'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers65000 lbs
Engine Weight87000 lbs
Tender Light Weight65000 lbs
Total Engine and Tender Weight152000 lbs
Tender Water Capacity3000 gals
Tender Fuel Capacity (oil/coal)6 tons
Minimum weight of rail (calculated)54 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter42"
Boiler Pressure160 psi
Cylinders (dia x stroke)15" x 22"
Tractive Effort16029 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.06
Heating Ability
Firebox Area70 sq. ft
Grate Area15.90 sq. ft
Evaporative Heating Surface1047 sq. ft
Superheating Surface
Combined Heating Surface1047 sq. ft
Evaporative Heating Surface/Cylinder Volume232.68
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2544
Same as above plus superheater percentage2544
Same as above but substitute firebox area for grate area11200
Power L13477
Power MT235.86

If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.