Los Angeles Terminal 4-6-0 "Ten-Wheeler" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 11886)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 17 p. 27.

The LAT sold this engine to the Las Vegas & Tonopah in December 1905 as its #1.


Class 7 (Locobase 11887)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 17 p. 101. Works number was 12204 in September 1891.

This compound was identical to the Ten-wheeler shown in Locobase in 11886. It used 9" (229 mm) piston valves, but was in fact a pretty light and small compound.

Before too long, it was converted to the 19" x 24" simple-expansion layout of its sister engine #5. And like the 5, the 7 went to the Las Vegas & Tonopah in January 1906 as their #2.

Principal Dimensions by Steve Llanso of Sweat House Media
Class57
Locobase ID11,886 11,887
RailroadLos Angeles TerminalLos Angeles Terminal
CountryUSAUSA
Whyte4-6-04-6-0
Number in Class11
Road Numbers5/17
GaugeStdStd
Number Built11
BuilderBurnham, Williams & CoBurnham, Williams & Co
Year18911891
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.83 / 4.2213.83 / 4.22
Engine Wheelbase (ft / m)24.06 / 7.3324.06 / 7.33
Ratio of driving wheelbase to overall engine wheebase 0.57 0.57
Overall Wheelbase (engine & tender) (ft / m)47.37 / 14.4447.37 / 14.44
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)76,000 / 34,47376,000 / 34,473
Engine Weight (lbs / kg)100,000 / 45,359100,000 / 45,359
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)3000 / 11.363000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 2142 / 21
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 142256 / 1422
Boiler Pressure (psi / kPa)140 / 9.70175 / 12.10
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61011.5" x 24" / 292x610
Low Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x610
Tractive Effort (lbs / kg)16,524 / 7495.1712,341 / 5597.79
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.60 6.16
Heating Ability
Firebox Area (sq ft / m2)128.10 / 11.91128.10 / 11.91
Grate Area (sq ft / m2)17 / 1.5817 / 1.58
Evaporative Heating Surface (sq ft / m2)1464 / 136.061464 / 136.06
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1464 / 136.061464 / 136.06
Evaporative Heating Surface/Cylinder Volume207.11507.41
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation23802975
Same as above plus superheater percentage23802975
Same as above but substitute firebox area for grate area17,93422,418
Power L138904364
Power MT338.53379.77

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