Wailuku Sugar Company 2-6-2 "Prairie" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class P C Jones (Locobase 13157)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 30, p. 261. See also Lurch Bird's contribution to a Bachman modelers forum Re: Outside Frame 30 Inch 2-6-2T

Reply #7 on: August 04, 2008, 02:23:55 PM á at [],6254.0.html, last accessed 7 April 2022; and "Wailuku Sugar Company", Semi-Weekly Maui News (Tuesday, 10 October 1922), p. three; and Works number was 31574 in August 1907.

Another Maui-based sugar grower, this plantation purchased its first Baldwin in 1896 (Locobase 13159) and took possession of this Prairie tank nine years later.

"Lurch Bird" noted that the P C Jones was later converted to tankless 0-6-2 trailing a fur-wheel tender and asked why this might have been done. Charles Mutschler replied on 5 August 2008:

"My guess about the pilot truck is that because all of the prototypes operated at very slow speeds, there was not as much need for a pilot truck as there was a need for the trailing truck to carry the weight of the firebox and fuel bunker ... On the temporary track in the cane fields, I would bet the train speeds were rather slow, probably not much above a walking pace. On the main line to the sugar mill, I suspect these little locos didn't exceed fifteen miles per hour. "

Principal Dimensions by Steve Llanso of Sweat House Media

ClassP C Jones
Locobase ID13157
RailroadWailuku Sugar Company
Number in Class1
Road Numbers
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.75 / 2.36
Engine Wheelbase (ft / m)20.33 / 6.20
Ratio of driving wheelbase to overall engine wheelbase 0.38
Overall Wheelbase (engine & tender) (ft / m)20.33 / 6.20
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)41,000 / 18,597
Engine Weight (lbs / kg)57,000 / 25,855
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)57,000
Tender Water Capacity (gals / ML)650 / 2.46
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)250 / 946
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)12" x 16" / 305x406
Tractive Effort (lbs / kg)8902 / 4037.88
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.61
Heating Ability
Tubes (number - dia) (in / mm)59 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.67 / 3.56
Firebox Area (sq ft / m2)38 / 3.53
Grate Area (sq ft / m2) 8.70 / 0.81
Evaporative Heating Surface (sq ft / m2)396 / 36.80
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)396 / 36.80
Evaporative Heating Surface/Cylinder Volume189.47
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1305
Same as above plus superheater percentage1305
Same as above but substitute firebox area for grate area5700
Power L12313
Power MT373.12

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