Artesian Belt 4-6-0 "Ten-Wheeler" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 13903)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 79. For an fascinating article on the Artesian Belt, see Carl Codney and Jim King, "A Road to Nowhere - Charles Simmons and the Artesian Belt Railroad". ([]) - it's well worth finding and reading it. Works number was 37614 in March 1912.

Texas's Artesian Belt bought this as possibly one of the last Ten-wheelers to be delivered with a saturated boiler. At some point, apparently after it left the AB's successor, the San Antonio Southern, the engine's boiler was substantially modified to accept a superheater; see Locobase 7754.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID13903
RailroadArtesian Belt
Number in Class1
Road Numbers2
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66
Engine Wheelbase (ft / m)23.12 / 7.05
Ratio of driving wheelbase to overall engine wheelbase 0.52
Overall Wheelbase (engine & tender) (ft / m)52.17 / 15.90
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)106,000 / 48,081
Engine Weight (lbs / kg)122,000 / 55,338
Tender Loaded Weight (lbs / kg)108,000 / 48,988
Total Engine and Tender Weight (lbs / kg)230,000 / 104,326
Tender Water Capacity (gals / ML)6000 / 22.73
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 1422
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x660
Tractive Effort (lbs / kg)25,573 / 11599.73
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.14
Heating Ability
Tubes (number - dia) (in / mm)228 - 2.25" / 57
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.25 / 4.04
Firebox Area (sq ft / m2)152 / 14.12
Grate Area (sq ft / m2)24.30 / 2.26
Evaporative Heating Surface (sq ft / m2)1920 / 178.37
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1920 / 178.37
Evaporative Heating Surface/Cylinder Volume250.65
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4860
Same as above plus superheater percentage4860
Same as above but substitute firebox area for grate area30,400
Power L16531
Power MT407.50

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Wes Barris