Milner, Caldwell & Flowers Lumber Company 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class W H Flowers (Locobase 11863)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 13, p. 186. Works number was 8376 in February 1887.

This little lumber tank was tasked with negotiating 10-degree curves and 4% grades. At some point, MC & F sold the 3 to Palmetto Phosphate. PHos had over 23,000 acres of phosphate-rock lands in north Florida.

In 1907, PPhos sold the locomotive to Green Bay Phosphate, also in Florida, where it toiled for at least 2 more decades.

Specifications by Steve Llanso of Sweat House Media
ClassW H Flowers
Locobase ID11863
RailroadMilner, Caldwell & Flowers Lumber Company
Number in Class1
Road Numbers3
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase5'
Engine Wheelbase18.50'
Ratio of driving wheelbase to overall engine wheebase 0.27
Overall Wheelbase (engine & tender)18.50'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers28000 lbs
Engine Weight44000 lbs
Tender Light Weight
Total Engine and Tender Weight44000 lbs
Tender Water Capacity750 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)23 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter39"
Boiler Pressure130 psi
Cylinders (dia x stroke)11" x 16"
Tractive Effort5485 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.10
Heating Ability
Firebox Area49.12 sq. ft
Grate Area 7.10 sq. ft
Evaporative Heating Surface340 sq. ft
Superheating Surface
Combined Heating Surface340 sq. ft
Evaporative Heating Surface/Cylinder Volume193.20
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation923
Same as above plus superheater percentage923
Same as above but substitute firebox area for grate area6386
Power L12812
Power MT442.81

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