Little Rock & Hot Springs 4-6-0 "Ten-Wheeler" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 14461)

Data from "Manufactures--Supplies: Cars and Locomotives", The Railway Age, Vol 28 (1 September 1899), p. 654. See also "Malvern Roundhouse History," []

The LR&HS was chartered as a narrow-gauge road and began construction in 1875 in Malvern, Ark and eventually linked Malvern to Butterfield Junction and beyond to Hot Springs. Not long after the completion in 1887 of the five-stall Malvern roundhouse, the railroad decided to convert to the standard gauge. This required modifications to the stalls and turntable of the roundhouse. The wider railroad opened on 16 October 1889.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID14461
RailroadLittle Rock & Hot Springs
Number in Class2
Road Numbers
Number Built2
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)61 / 1549
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x660
Tractive Effort (lbs / kg)28,984 / 13146.94
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)254 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)2034 / 188.96
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2034 / 188.96
Evaporative Heating Surface/Cylinder Volume215.24
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area
Power L1
Power MT

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Wes Barris