Galveston, Brazos & Colorado/D&RGW 2-6-0 "Mogul" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class Lota (Locobase 16180)

Data from DeGolyer, Volume 8, p. 65. See also Handbook of Texas Online, George C. Werner, "Galveston, Brazos and Colorado Railway," accessed April 12, 2016, and the UtahRails account of the U&PV at, last accessed 12 April 2016. Baldwin works number was 4048 in February 1877.

This skinny gauge Mogul , one of several built to the same first went to a start-up that would never get very close to the Brazos River, let alone Colorado. The record doesn't indicate exactly why the GBC returned the Lota to Baldwin, but the Philadelphia builder quickly found a buyer in the Utah & Pleasant Valley.

The U&PV ordered the 3 in December 1879. Among the changed details was the addition of a snow plow on the pilot, doubtless reflecting the new railroad's struggles with snow that very month. By January 1888, the line now included 66 miles (106 km); the coal road's completion at Provo would come in October 1880 and the Denver & Rio Grande bought the line in early 1881.

Specifications by Steve Llanso of Sweat House Media
Locobase ID16,180
RailroadGalveston, Brazos & Colorado/D&RGW
Number in Class1
Road Numbers3/7
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)11.67
Engine Wheelbase (ft)17.67
Ratio of driving wheelbase to overall engine wheebase 0.66
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)33,000
Engine Weight (lbs)40,000
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)
Tender Water Capacity (gals)1200
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)18
Geometry Relating to Tractive Effort
Driver Diameter (in)37
Boiler Pressure (psi)130
High Pressure Cylinders (dia x stroke) (in)12" x 16"
Tractive Effort (lbs)6881
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.80
Heating Ability
Firebox Area (sq ft)60
Grate Area (sq ft) 8.50
Evaporative Heating Surface (sq ft)451
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)451
Evaporative Heating Surface/Cylinder Volume215.34
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1105
Same as above plus superheater percentage1105
Same as above but substitute firebox area for grate area7800
Power L12875
Power MT576.21

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