Palmetto Phosphate Company 2-6-2 "Prairie" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 14073)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 45, p.195. Works numbers were 33508 in June 1909 and 40803 in November 1913.

This medium-sized Prairie was essentially a duplicate of several dozen other low-drivered short-line engines sold by Baldwin to railroads and industries across the United States during this period. It arrived on the PP rails in Florida to transport the dug-out phosphate deposits to the Charlotte Harbor & Northern at Cottman or Ridgewood. The CH&N soon bought both branches.

Like many of the northern Florida phosphate companies, Palmetto Phospate was bought by the American Agricultural Chemical Company, then the second largest such company in the United States.

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID14073
RailroadPalmetto Phosphate Company
Number in Class1
Road Numbers1
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10 / 3.05
Engine Wheelbase (ft / m)25.25 / 7.70
Ratio of driving wheelbase to overall engine wheelbase 0.40
Overall Wheelbase (engine & tender) (ft / m)46.58 / 13.97
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)78,000 / 35,380
Engine Weight (lbs / kg)103,000 / 45,359
Tender Loaded Weight (lbs / kg)60,000 / 27,216
Total Engine and Tender Weight (lbs / kg)163,000 / 72,575
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)43 / 21.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 1168
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x610
Tractive Effort (lbs / kg)20,435 / 9269.17
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.82
Heating Ability
Tubes (number - dia) (in / mm)177 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.54 / 4.13
Firebox Area (sq ft / m2)93 / 8.68
Grate Area (sq ft / m2)14.40 / 1.34
Evaporative Heating Surface (sq ft / m2)1340 / 125.23
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1340 / 125.23
Evaporative Heating Surface/Cylinder Volume239.71
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2592
Same as above plus superheater percentage2592
Same as above but substitute firebox area for grate area16,740
Power L14456
Power MT377.84

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Wes Barris