Texas, Oklahoma & Eastern 2-8-2 "Mikado" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 225 (Locobase 14125)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 226. Works number was 38807 in November 1912.

TO&E had stocked its motive power roster with a new low-drivered Prairie (Locobase 14123), two more from parent DeQueen & Eastern (11748 ), a relatively large 2-8-2 (Locobase 14124) when it ordered this smaller Mikado.


Class 375 (Locobase 14124)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 43, p. 224. Works number was 38094 in August 1912.

Beefing up the motive power of the DeQueen & Eastern's western extension, this middle-sized, saturated-boiler Mikado went to work in late 1912.

Specifications by Steve Llanso of Sweat House Media
Class225375
Locobase ID14,125 14,124
RailroadTexas, Oklahoma & EasternTexas, Oklahoma & Eastern
CountryUSAUSA
Whyte2-8-22-8-2
Number in Class11
Road Numbers225375
GaugeStdStd
Number Built11
BuilderBaldwinBaldwin
Year19121912
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.08 / 3.6813.08 / 3.99
Engine Wheelbase (ft / m)27.25 / 8.3127 / 8.23
Ratio of driving wheelbase to overall engine wheebase 0.44 0.48
Overall Wheelbase (engine & tender) (ft / m)51.06 / 15.5658.01 / 17.68
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)111,000 / 50,349134,000 / 60,781
Engine Weight (lbs / kg)136,000 / 61,689173,000 / 78,472
Tender Loaded Weight (lbs / kg)80,000 / 36,287100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)216,000 / 97,976273,000 / 123,831
Tender Water Capacity (gals / ML)4000 / 15.155000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)7 / 6.402000 / 7.60
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 2356 / 28
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 111848 / 1219
Boiler Pressure (psi / kPa)180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61020" x 28" / 508x711
Tractive Effort (lbs / kg)27,039 / 12264.7035,700 / 16193.27
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.11 3.75
Heating Ability
Firebox Area (sq ft / m2)140 / 13.01158 / 14.68
Grate Area (sq ft / m2)25.50 / 2.3741.30 / 3.84
Evaporative Heating Surface (sq ft / m2)1918 / 178.193166 / 294.13
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1918 / 178.193166 / 294.13
Evaporative Heating Surface/Cylinder Volume271.34310.97
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation45907434
Same as above plus superheater percentage45907434
Same as above but substitute firebox area for grate area25,20028,440
Power L148895595
Power MT388.41368.20