Data from DeGolyer, Volume 52, p. 315. See also , presented at [] . Works number was 43393 in May 1916.
Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 20, p. 24. Works number was 14418 in September 1895.
This medium Ten-wheeler encountered difficulties settling into a career. Originally ordered by the Cincinnati, New Orleans & Texas Pacific, it was sold before delivery to the Wisconsin & Michigan as their 504. But the W&M found it was too heavy and rejected it. Even though it had a Pullman vestibule tender (royalty to be paid by the railroad), 504 wound on the Union Construction roster as their #8. Before long, the 8 was sold to the Randsburg Railroad, which served a mining network in California's Mojave Desert and given #1. The RR was absorbed by the Atchison, Topeka & Santa Fe, which renumbered 1 as their 856 by 1898. The Santa Fe gave it number 856, but renumbered it twice in four years before selling the 260 to the Tonopah & Tidewater, which gave it back #1. For a detailed and fascinating timeline of the building of the T&T (which never reached the second T), see John Brabyn et al's [
Principal Dimensions by Steve Llanso of Sweat House Media | ||
---|---|---|
Class | 4 | 8 |
Locobase ID | 14288 | 12162 |
Railroad | Union Cypress | Union Construction |
Country | USA | USA |
Whyte | 4-6-0 | 4-6-0 |
Number in Class | 1 | 1 |
Road Numbers | 4 | 8/1/856/641/260/1 |
Gauge | Std | Std |
Number Built | 1 | 1 |
Builder | Baldwin | Burnham, Williams & Co |
Year | 1916 | 1895 |
Valve Gear | Walschaert | Stephenson |
Locomotive Length and Weight | ||
Driver Wheelbase (ft / m) | 12.83 / 3.91 | 14.50 / 4.42 |
Engine Wheelbase (ft / m) | 22.98 / 7 | 26.37 / 8.04 |
Ratio of driving wheelbase to overall engine wheelbase | 0.56 | 0.55 |
Overall Wheelbase (engine & tender) (ft / m) | 47.73 / 14.55 | 52.33 / 15.95 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | ||
Weight on Drivers (lbs / kg) | 75,000 / 34,019 | |
Engine Weight (lbs / kg) | 104,000 / 47,174 | |
Tender Loaded Weight (lbs / kg) | 80,000 / 36,287 | |
Total Engine and Tender Weight (lbs / kg) | 184,000 / 83,461 | |
Tender Water Capacity (gals / ML) | 4000 / 15.15 | 4000 / 15.15 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | ||
Minimum weight of rail (calculated) (lb/yd / kg/m) | 42 / 21 | |
Geometry Relating to Tractive Effort | ||
Driver Diameter (in / mm) | 56 / 1422 | 68 / 1727 |
Boiler Pressure (psi / kPa) | 185 / 12.80 | 180 / 12.40 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 | 19" x 24" / 483x610 |
Tractive Effort (lbs / kg) | 17,253 / 7825.84 | 19,494 / 8842.34 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.35 | |
Heating Ability | ||
Tubes (number - dia) (in / mm) | 178 - 2" / 51 | 244 - 2" / 51 |
Flues (number - dia) (in / mm) | ||
Flue/Tube length (ft / m) | 12.23 / 3.73 | 13.17 / 4.01 |
Firebox Area (sq ft / m2) | 91 / 8.45 | 150.44 / 13.98 |
Grate Area (sq ft / m2) | 15.20 / 1.41 | 18.60 / 1.73 |
Evaporative Heating Surface (sq ft / m2) | 1223 / 113.62 | 1822 / 169.33 |
Superheating Surface (sq ft / m2) | ||
Combined Heating Surface (sq ft / m2) | 1223 / 113.62 | 1822 / 169.33 |
Evaporative Heating Surface/Cylinder Volume | 218.78 | 231.22 |
Computations Relating to Power Output (More Information) | ||
Robert LeMassena's Power Computation | 2812 | 3348 |
Same as above plus superheater percentage | 2812 | 3348 |
Same as above but substitute firebox area for grate area | 16,835 | 27,079 |
Power L1 | 5183 | 6664 |
Power MT | 457.06 |