Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 15, p. 37. Works number was 9891 in March 1889. See the Handbook of Texas Online [] . In 1883, a three-rail line leading from Laredo, Texas to Minerva, some 27 miles began construction, which was completed two years later along with a branch line to Cannel. This small, lightly built railroad served the coal mines at Santo Tomas Mine.
Upon completion, the line was reorganized as the Rio Grande & Eagle Pass with a goal to build the 135 miles (217 km) to the latter town. In the event, the railroad converted to standard gauge in 1895 and completed only the 24 miles (38.6 km) to Delores.This little 4-4-0 provided whatever passenger power the railroad required.
Over time, as the mines petered out, the end-of-track inched away from the mines. The last big mine closed in 1939 and the RG & EP filed for abandonment in 1942, but remained opened to Milepost 7 to serve a gunnery range. Thgat last segment closed in 1947.
NB: The firebox heating surface) is an estimate based on comparisons with similar firebox dimensions in other 4-4-0s of the period produced by Baldwin in the period.
Principal Dimensions by Steve Llanso of Middle Run Media | |
---|---|
Class | 1 |
Locobase ID | 11592 |
Railroad | Rio Grande & Eagle Pass |
Country | USA |
Whyte | 4-4-0 |
Number in Class | 1 |
Road Numbers | 1 |
Gauge | Std |
Number Built | 1 |
Builder | Burnham, Parry, Williams & Co |
Year | 1889 |
Valve Gear | Stephenson |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 8 / 2.44 |
Engine Wheelbase (ft / m) | 21.75 / 6.63 |
Ratio of driving wheelbase to overall engine wheelbase | 0.37 |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
Weight on Drivers (lbs / kg) | 48,000 / 21,772 |
Engine Weight (lbs / kg) | 74,000 / 33,566 |
Tender Loaded Weight (lbs / kg) | |
Total Engine and Tender Weight (lbs / kg) | |
Tender Water Capacity (gals / ML) | 2600 / 9.85 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 62 / 1575 |
Boiler Pressure (psi / kPa) | 130 / 900 |
High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 24" / 406x610 |
Tractive Effort (lbs / kg) | 10,950 / 4966.84 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.38 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 161 - 2" / 51 |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 10.85 / 3.31 |
Firebox Area (sq ft / m2) | 115 |
Grate Area (sq ft / m2) | 15.50 / 1.44 |
Evaporative Heating Surface (sq ft / m2) | 1030 |
Superheating Surface (sq ft / m2) | |
Combined Heating Surface (sq ft / m2) | 1030 |
Evaporative Heating Surface/Cylinder Volume | 184.26 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 2015 |
Same as above plus superheater percentage | 2015 |
Same as above but substitute firebox area for grate area | 14,950 |
Power L1 | 3857 |
Power MT | 354.30 |