Texas, Oklahoma & Eastern 2-6-2 "Prairie" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 203 (Locobase 14123)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 43, p. 221 and Vol 53, pp. 331+. Works numbers were 37523 in January 1912, 45549 in May 1917.

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.


Class 209 (Locobase 14970)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 65, pp. 305. Works number was 53269 in May 1920.

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
Class203209
Locobase ID14123 14970
RailroadTexas, Oklahoma & EasternTexas, Oklahoma & Eastern
CountryUSAUSA
Whyte2-6-22-6-2
Number in Class21
Road Numbers203, 207209
GaugeStdStd
Number Built21
BuilderBaldwinBaldwin
Year19121920
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase10'10'
Engine Wheelbase26'26'
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 Drivers77000 lbs77500 lbs
Engine Weight103000 lbs104500 lbs
Tender Light Weight60000 lbs70000 lbs
Total Engine and Tender Weight163000 lbs174500 lbs
Tender Water Capacity3000 gals3000 gals
Tender Fuel Capacity (oil/coal)1500 gals6 tons
Minimum weight of rail (calculated)43 lb/yard43 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter46"46"
Boiler Pressure180 psi180 psi
Cylinders (dia x stroke)16" x 24"16" x 24"
Tractive Effort20435 lbs20435 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.77 3.79
Heating Ability
Firebox Area112 sq. ft99 sq. ft
Grate Area16.80 sq. ft20.60 sq. ft
Evaporative Heating Surface1366 sq. ft1466 sq. ft
Superheating Surface
Combined Heating Surface1366 sq. ft1466 sq. ft
Evaporative Heating Surface/Cylinder Volume244.58262.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation30243708
Same as above plus superheater percentage30243708
Same as above but substitute firebox area for grate area2016017820
Power L147594845
Power MT408.77413.47


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