Dierks Lumber Company incorporated this grandly named shortline as an extension of Arkansas's DeQueen & Eastern into Oklahoma. The TO&E headed west from the Arkansas-Oklahoma state line at West Line, Ark 40 miles to Valliant.
The DeQueen & Eastern ordered these near-duplicates of the three it operated (Locobase 11748) for the TO&E. It had more firebox heating surface in an oil-fired layout, but was required on similarly "rough track" metalled with 56 lb/yard (28 kg/metre) rail. According to a later "Hereafter" note dated 20 June 1913, Baldwin was called on to "redesign valve motion. Arrange a valve motion bearer front of main drivers, the link bearing to extend between this motion bearer and the guide bearer. Strengthen the cast-steel guide yoke and make the reverse lever rod heavier section." Presumably, the 207 benefited from these admonitions.
Although a wholly owned subsidiary, the TO&E operated independently until it was absorbed in 1996.
The TO&E was the Oklahoma extension of the De Queen & Eastern Railroad in Arkansas. It had bought duplicates of an earlier Ten-wheeler design that served on the DQ&E in 1912. In 1920 it reproduced the 1917 DQ&E coal-burning Ten-wheeler (Locobase 14969) that had a longer boiler and a new firebox that was shorter, wider, and not as deep as the older oil-burning design. The brick arch was supported by two arch tubes that contributed 11 sq ft (1.03 sq m) to the firebox heating surface.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Texas, Oklahoma & Eastern||Texas, Oklahoma & Eastern|
|Number in Class||2||1|
|Road Numbers||203, 207||209|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.38||0.38|
|Overall Wheelbase (engine & tender)||47.25'||47.25'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||77000 lbs||77500 lbs|
|Engine Weight||103000 lbs||104500 lbs|
|Tender Light Weight||60000 lbs||70000 lbs|
|Total Engine and Tender Weight||163000 lbs||174500 lbs|
|Tender Water Capacity||3000 gals||3000 gals|
|Tender Fuel Capacity (oil/coal)||1500 gals||6 tons|
|Minimum weight of rail (calculated)||43 lb/yard||43 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||180 psi||180 psi|
|Cylinders (dia x stroke)||16" x 24"||16" x 24"|
|Tractive Effort||20435 lbs||20435 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.77||3.79|
|Firebox Area||112 sq. ft||99 sq. ft|
|Grate Area||16.80 sq. ft||20.60 sq. ft|
|Evaporative Heating Surface||1366 sq. ft||1466 sq. ft|
|Combined Heating Surface||1366 sq. ft||1466 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||244.58||262.49|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||3024||3708|
|Same as above plus superheater percentage||3024||3708|
|Same as above but substitute firebox area for grate area||20160||17820|