Relatively small decapod with 12" (206 mm) piston valves that was an "only" for the Osage in Oklahoma. This railway was built in the early 1920s to support oil traffic from fields in the Osage Indian Nation and remained independent until its closure in 1953.
The design's construction details were to be as much as possible the same as for the two Midland Valley 2-8-2s (Locobase 15332) produced in the same year. Firebox heating surface area included 25 sq ft (2.3 sq m) of arch tubes.
The 10 didn't remain on the Osage for very long. It soon moved over to the Kansas, Oklahoma & Gulf, where it spent most of its working life. The KO&G acquired the engine in 1929 in a trade for the KO&G's 2-8-0 #235, which Mike Condren notes "was much better suited for the Osage Railway"
See Locobases 1396-1397 for a description of this stock Baldwin light decapod bought by several railroads in the 1920s. Their experience with the light-footed Russian decapods prompted the surge in interest in the arrangement.
|Specifications by Steve Llanso of Sweat House Media|
|Number in Class||1|
|Road Numbers||10 / 110|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.70|
|Overall Wheelbase (engine & tender)||64'|
|Axle Loading (Maximum Weight per Axle)||38000 lbs|
|Weight on Drivers||190000 lbs|
|Engine Weight||212000 lbs|
|Tender Light Weight||161000 lbs|
|Total Engine and Tender Weight||373000 lbs|
|Tender Water Capacity||8000 gals|
|Tender Fuel Capacity (oil/coal)||14 tons|
|Minimum weight of rail (calculated)||63 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||200 psi|
|Cylinders (dia x stroke)||24" x 28"|
|Tractive Effort||48960 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.88|
|Firebox Area||197 sq. ft|
|Grate Area||54.30 sq. ft|
|Evaporative Heating Surface||2343 sq. ft|
|Superheating Surface||553 sq. ft|
|Combined Heating Surface||2896 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||159.81|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||10860|
|Same as above plus superheater percentage||12923|
|Same as above but substitute firebox area for grate area||46886|