Beaumont & Great Northern 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 104 (Locobase 13313)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 32, p. 16. See also S. G. Reed, "BEAUMONT AND GREAT NORTHERN RAILROAD," Handbook of Texas Online (, accessed October 28, 2011. Published by the Texas State Historical Association. Works number was 33105 in January 1909.

The B & GN was established in 1905 to connect Trinity (about 70 miles mostly north of Houston) with Livingston, which lay 37 miles to its southeast. In 1908, the newly completed line was sold to a Mr R C Duff for his ambitious Waco to Port Arthur line. But in 1910, one of the original investors - William Carlisle of Atchison, Kans -- bought it back and added 15 miles from Trinity northwest to Weldon in the next year.

Duff bought back the now-longer segment of his dream railroad to sell it to the Missouri-Kansas-Texas apparently because they intended to extend the line past Weldon all the way to Waco. Prohibited by the Texas Attorney General from consolidating the line into the Katy proper, the bigger road leased it for 99 years in exchange for a plan to build the Weldon-Waco segment.

Instead, the Katy went into receivership and the railroad grew no larger. When the road reverted to Duff and his investment partners in 1923, they dubbed it the Waco, Beaumont, Trinity and Sabine Railway. The Katy willingly sold Duff the 66-mile Trinity-Colmesneil portion of their Sabine line. Alas for Duff, he was never able to build the Weldon-Waco segment and the whole railroad went into receivership in 1930, a suspension that would last until its official demise in 1961.

During this period, according to Don Ross of (last accessed 28 October 2011), its nickname was "Wobblety Bobblety Turnover and Stop." He adds, in a smile-inducing aside, "Now, can anyone pronounce Wobblety Bobblety without grinning?"

Specifications by Steve Llanso of Sweat House Media
Locobase ID13,313
RailroadBeaumont & Great Northern
Number in Class1
Road Numbers104
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)10.50
Engine Wheelbase (ft)21.17
Ratio of driving wheelbase to overall engine wheebase 0.50
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)90,000
Engine Weight (lbs)110,000
Tender Loaded Weight (lbs)80,000
Total Engine and Tender Weight (lbs)190,000
Tender Water Capacity (gals)4000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)50
Geometry Relating to Tractive Effort
Driver Diameter (in)50
Boiler Pressure (psi)200
High Pressure Cylinders (dia x stroke) (in)18" x 24"
Tractive Effort (lbs)26,438
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.40
Heating Ability
Firebox Area (sq ft)114
Grate Area (sq ft)22
Evaporative Heating Surface (sq ft)1334
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1334
Evaporative Heating Surface/Cylinder Volume188.72
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4400
Same as above plus superheater percentage4400
Same as above but substitute firebox area for grate area22,800
Power L14489
Power MT329.88

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