Midland Valley / Missouri, Oklahoma & Gulf 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 13230)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 31, p. 103, Volume 32, p. 1. Works numbers were 32284 in November 1907, 32345-32346 in December, 33043 in November 1908, and 33387-33388 in April 1909. A summary of the Muskogee Company empire appears in the Muskogee Company records, DeGolyer Library, Southern Methodist University, http://www.lib.utexas.edu/taro/smu/00131/smu-00131.html, last accessed 26 April 2015.

The MO&G was chartered in 1904 and built 102 mainline miles of 70-lb/yard (35-kg/metre) railway from Wagoner to Red River and another 114 miles in branches and spurs. The affiliated MO&G Railway of Texas built a continuation from Red River to Denison, Tex beginning in 1910. See Locobase 17 for a Handbook of Texas description of the KOG. (http://www.tsha.utexas.edu/handbook/online/articles/view/KK/eqk6.html -- the Handbook of Texas Online).

Locobase wonders at the persistence of this prairie railroad's preference for such a small grate on this design. Granted, the cylinder volume was easily served by the relatively large boiler and firebox heating surface area wasn't less than average. And its power certainly was up to the task.

Whatever its limitations, the light Ten-wheeler sextet served the MO&G and its February 1920 successor Kansas, Oklahoma & Gulf for years. 101 later was sold to Finkbine Lumber and renumbered


Class 20 (Locobase 12859)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University, Volume 28, p. 163. Works numbers were 26408-26409, 26469, 26477 in September 1909; 29525 in November

Specifications by Steve Llanso of Sweat House Media
Class10120
Locobase ID13230 12859
RailroadMissouri, Oklahoma & Gulf (KO&G)Midland Valley (KO&G)
CountryUSAUSA
Whyte4-6-04-6-0
Number in Class65
Road Numbers101-10620-24 / 50-54
GaugeStdStd
Number Built65
BuilderBurnham, Williams & CoBurnham, Williams & Co
Year19071905
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase14.25'11.33'
Engine Wheelbase24.92'21.58'
Ratio of driving wheelbase to overall engine wheebase 0.57 0.53
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers88000 lbs
Engine Weight120000 lbs
Tender Light Weight80000 lbs100000 lbs
Total Engine and Tender Weight200000 lbs
Tender Water Capacity4000 gals5000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)49 lb/yard0
Geometry Relating to Tractive Effort
Driver Diameter52"57"
Boiler Pressure180 psi190 psi
Cylinders (dia x stroke)18" x 24"18" x 24"
Tractive Effort22879 lbs22032 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.85
Heating Ability
Firebox Area144 sq. ft145 sq. ft
Grate Area17.30 sq. ft22.20 sq. ft
Evaporative Heating Surface1788 sq. ft1796 sq. ft
Superheating Surface
Combined Heating Surface1788 sq. ft1796 sq. ft
Evaporative Heating Surface/Cylinder Volume252.95254.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation31144218
Same as above plus superheater percentage31144218
Same as above but substitute firebox area for grate area2592027550
Power L155356438
Power MT416.00

Reference


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