Omaha & St Louis/Wabash 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class H5 (Locobase 9898)

Data from DeGolyer, Volume 22, p. 29. See also WAB 1907 Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 16426-16430 in December 1898.

This small, relatively lightweight class adopted the Wabash's numbers when that railroad absorbed the O & St L in 1901. It's not clear to Locobase whether this class was delivered with the 240 tubes shown in the order spec, but by 1907, they had the 247 shown in this entry.

260 was scrapped first in 1920, 261 followed in June 1921, 257 in December 1926, 258 in 1928, and 259 in December 1931, more than 11 years after the first of the class.

Specifications by Steve Llanso of Sweat House Media
Locobase ID9898
RailroadOmaha & St Louis/Wabash
Number in Class5
Road Numbers600-604/257-261
Number Built5
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase11.75'
Engine Wheelbase22.08'
Ratio of driving wheelbase to overall engine wheebase 0.53
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers92000 lbs
Engine Weight126000 lbs
Tender Light Weight70000 lbs
Total Engine and Tender Weight196000 lbs
Tender Water Capacity4000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)51 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"
Boiler Pressure185 psi
Cylinders (dia x stroke)18" x 26"
Tractive Effort23655 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.89
Heating Ability
Firebox Area152.50 sq. ft
Grate Area23.33 sq. ft
Evaporative Heating Surface1863 sq. ft
Superheating Surface
Combined Heating Surface1863 sq. ft
Evaporative Heating Surface/Cylinder Volume243.29
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4316
Same as above plus superheater percentage4316
Same as above but substitute firebox area for grate area28213
Power L15920
Power MT425.59

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