Data from 1944 KO & G Locomotive Diagrams book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Volume 74, pp. 32+. (Thanks to Chris Hohl for his April 2015 email supplying the tender capacity.) Works number 58403 in May 1925.
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.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 10 |
| Locobase ID | 6781 |
| Railroad | Osage Railway |
| Country | USA |
| Whyte | 2-10-0 |
| Number in Class | 1 |
| Road Numbers | 10 / 110 |
| Gauge | Std |
| Number Built | 1 |
| Builder | Baldwin |
| Year | 1925 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 20 / 6.10 |
| Engine Wheelbase (ft / m) | 28.67 / 8.74 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.70 |
| Overall Wheelbase (engine & tender) (ft / m) | 64 / 19.51 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 38,000 / 17,237 |
| Weight on Drivers (lbs / kg) | 190,000 / 86,183 |
| Engine Weight (lbs / kg) | 212,000 / 96,162 |
| Tender Loaded Weight (lbs / kg) | 161,000 / 73,028 |
| Total Engine and Tender Weight (lbs / kg) | 373,000 / 169,190 |
| Tender Water Capacity (gals / ML) | 8000 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 14 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 63 / 31.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56 / 1422 |
| Boiler Pressure (psi / kPa) | 200 / 1380 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 24" x 28" / 610x711 |
| Tractive Effort (lbs / kg) | 48,960 / 22207.91 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.88 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 167 - 2.25" / 57 |
| Flues (number - dia) (in / mm) | 28 - 5.375" / 137 |
| Flue/Tube length (ft / m) | 17 / 5.18 |
| Firebox Area (sq ft / m2) | 197 / 18.30 |
| Grate Area (sq ft / m2) | 54.30 / 5.04 |
| Evaporative Heating Surface (sq ft / m2) | 2343 / 217.67 |
| Superheating Surface (sq ft / m2) | 553 / 51.37 |
| Combined Heating Surface (sq ft / m2) | 2896 / 269.04 |
| Evaporative Heating Surface/Cylinder Volume | 159.82 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 10,860 |
| Same as above plus superheater percentage | 12,923 |
| Same as above but substitute firebox area for grate area | 46,886 |
| Power L1 | 10,575 |
| Power MT | 613.52 |