Texas Southern 4-6-0 "Ten-Wheeler" Locomotives in the USA
Class Details by Steve Llanso of Sweat House Media
Class 56 (Locobase 12756)
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, p. 199. See also Nancy Beck Young, "TEXAS SOUTHERN RAILWAY," Handbook of Texas Online ([
]), accessed June 23, 2011. Published by the Texas State Historical Association. Works numbers were 25211, 25244 in March 1905.
Two of many light-footed Ten-wheelers produced at this time, this pair for an east Texas line that succeeded to the assets of the bankrupt Paris, Marshall & Sabine Pass in 1897. It was dependent on logging demand and never found firm foundation in other business lines. Its assets were bought up by the Marshall & East Texas in 1908, but that group had little better success and rolled up in the mid-teens.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 56 |
| Locobase ID | 12756 |
| Railroad | Texas Southern |
| Country | USA |
| Whyte | 4-6-0 |
| Number in Class | 2 |
| Road Numbers | 56-57 |
| Gauge | Std |
| Number Built | 2 |
| Builder | Burnham, Williams & Co |
| Year | 1905 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 15 / 4.57 |
| Engine Wheelbase (ft / m) | 25.17 / 7.67 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.60 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 88,500 / 40,143 |
| Engine Weight (lbs / kg) | 116,000 / 52,617 |
| Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 |
| Total Engine and Tender Weight (lbs / kg) | 196,000 / 88,904 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 49 / 24.50 |
| 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) | 4.24 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 198 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14 / 4.27 |
| Firebox Area (sq ft / m2) | 122.70 / 11.40 |
| Grate Area (sq ft / m2) | 22 / 2.04 |
| Evaporative Heating Surface (sq ft / m2) | 1567 / 145.63 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1567 / 145.63 |
| Evaporative Heating Surface/Cylinder Volume | 221.64 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3960 |
| Same as above plus superheater percentage | 3960 |
| Same as above but substitute firebox area for grate area | 22,086 |
| Power L1 | 5274 |
| Power MT | 394.14 |