This was a Texas oil-patch railway begun in 1917 that covered about 25 miles (40.2 km) of mostly flat land on 60 lb/yard (30 kg/metre) rail. It connected Dayton, which lay on the Texas & New Orleans Railroad (subsidiary of the Southern Pacific), to Humble Oil's Baytown refinery. The D-GC's earnings made it a profitable line. As 1926 figures suggest, passenger earnings ($5,000) were dwarfed, as might be expected, by the $157,000 of freight revenue.
Apparently needing a good local-service locomotive of moderate power, the D-GC Rwy and the builder settled on the 4-4-0 layout and produced one of the last such engines (works #55150) supplied by a US builder to a US railroad. The design duplicated an engine with the same road number that Baldwin had delivered to the Red River & Gulf in Louisiana in 1919 (see Locobase 14298). The two differed in the 104's having a Vanderbilt cylindrical tender and spoke-center engine truck wheels. The design's equalizing beams were to be "extra heavy."
The D&GC 104 was oil-fired, had 8" (203 mm) piston valves, and was superheated to a useful degree. Along the boiler were arrayed three domes, the one forward for sand, the one in the middle for steam, the one just behind that for more sand.
The D-GC was sold to the Southern Pacific in 1926, which leased the line to the T & NO for eight years, then merged all of the SP properties into the T & NO. The D-GC's 104 was renumbered 192 on the SP, then 223 on the T & NO.
|Specifications by Steve Llanso of Sweat House Media|
|Number in Class||1|
|Road Numbers||104 / 192 / 223|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.37|
|Overall Wheelbase (engine & tender)||46.48'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||54500 lbs|
|Engine Weight||89000 lbs|
|Tender Light Weight||93000 lbs|
|Total Engine and Tender Weight||182000 lbs|
|Tender Water Capacity||4000 gals|
|Tender Fuel Capacity (oil/coal)||2000 gals|
|Minimum weight of rail (calculated)||45 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||180 psi|
|Cylinders (dia x stroke)||15" x 24"|
|Tractive Effort||13770 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.96|
|Firebox Area||87 sq. ft|
|Grate Area||15.50 sq. ft|
|Evaporative Heating Surface||698 sq. ft|
|Superheating Surface||157 sq. ft|
|Combined Heating Surface||855 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||142.20|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||2790|
|Same as above plus superheater percentage||3292|
|Same as above but substitute firebox area for grate area||18479|