Data from MP SUBS 7 - 1935 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also Robert Wooster and Nancy Young, "Orange and Northwestern Railroad," Handbook of Texas Online, accessed July 03, 2022, []. Works numbers were 38702-38703 in October 1905.
Established in 1901 to rebuild a tram road to transport logs from southeast Texas pine forests, the O&NW as laid out connected Orange with the 30-miles (48 km) distant Buna Junction on the Gulf, Beaumont and Kansas City railroad. That segment opened in March 1902.
When Benjamin F Yoakum acquired the O&NW in 1905, he extended the line another 28 miles (45 km) north to Newton. It was to serve the construction of that segment that these two Ten-wheelers came on the line. Not long after the extension opened, the Colorado Southern, New Orleans & Pacific Railroad acquired the O&NW.
In 1910, the CSNO&P changed its name to the New Orleans, Texas & Mexico. In 1916, these two engines were transferred to the St Louis, Burlington & Iron Mountain, but kept their road numbers. Still later, they took MP numbers 234, 233. 234 fell under the ferro-knacker's torch in March 1934.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 106/TN-57 - 233 |
Locobase ID | 7753 |
Railroad | Orange & Northwestern (NOT & M/MP) |
Country | USA |
Whyte | 4-6-0 |
Number in Class | 2 |
Road Numbers | 39, 38/234, 233 |
Gauge | Std |
Number Built | 2 |
Builder | Alco-Cooke |
Year | 1905 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 11.50 / 3.51 |
Engine Wheelbase (ft / m) | 21.33 / 6.50 |
Ratio of driving wheelbase to overall engine wheelbase | 0.54 |
Overall Wheelbase (engine & tender) (ft / m) | 47.54 / 14.49 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 93,000 / 42,184 |
Engine Weight (lbs / kg) | 123,000 / 55,792 |
Tender Loaded Weight (lbs / kg) | 115,000 / 52,163 |
Total Engine and Tender Weight (lbs / kg) | 238,000 / 107,955 |
Tender Water Capacity (gals / ML) | 5000 / 18.94 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2300 / 8706 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 52 / 26 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 57 / 1448 |
Boiler Pressure (psi / kPa) | 180 / 1240 |
High Pressure Cylinders (dia x stroke) (in / mm) | 18" x 24" / 457x610 |
Tractive Effort (lbs / kg) | 20,872 / 9467.39 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.46 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 220 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 12 / 3.66 |
Firebox Area (sq ft / m2) | 135 / 12.54 |
Grate Area (sq ft / m2) | 24.50 / 2.28 |
Evaporative Heating Surface (sq ft / m2) | 1507 / 140.06 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1507 / 140.06 |
Evaporative Heating Surface/Cylinder Volume | 213.15 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 4410 |
Same as above plus superheater percentage | 4410 |
Same as above but substitute firebox area for grate area | 24,300 |
Power L1 | 5278 |
Power MT | 375.35 |