Hebard Cypress Company 2-6-2 "Prairie" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 14034)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 52, p. 307 and Volume 71, pp. 254+. (Thanks to Chris Hohl for his 21 November 2015 email noting the tender capacity.) Works numbers were 41863 in January 1915 and 55301 in March 1922.

Hebard's operations in Florida offered some challenges to these logging Prairies, including 2 1/2% grades in some places, but the grades were never more than 10 degrees (574 foot/ 175 metre radii) on the level and only 5 degrees (1,146 foot/349 metre radii) on the steepest grades.

Locobase doesn't know when the 4 was sold to Ford, but can say that it was renumbered twice by the auto builder to 7 and 24. Ford owned lumber holdings in northern Michigan. 5 also went to Ford and was renumbered 26.

The 24 was sold in 1933 to Menominee Sugar Company.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID14,034
RailroadHebard Cypress Company
Number in Class2
Road Numbers4-5
Number Built2
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.80
Engine Wheelbase (ft / m)23.75 / 7.24
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender) (ft / m)45.48 / 13.86
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)72,000 / 32,659
Engine Weight (lbs / kg)92,000 / 41,731
Tender Loaded Weight (lbs / kg)50,000 / 22,680
Total Engine and Tender Weight (lbs / kg)142,000 / 64,411
Tender Water Capacity (gals / ML)2700 / 10.23
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)4 / 3.60
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 24" / 381x610
Tractive Effort (lbs / kg)18,777 / 8517.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.83
Heating Ability
Firebox Area (sq ft / m2)83 / 7.71
Grate Area (sq ft / m2)14.10 / 1.31
Evaporative Heating Surface (sq ft / m2)1071 / 99.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1071 / 99.50
Evaporative Heating Surface/Cylinder Volume218.18
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2538
Same as above plus superheater percentage2538
Same as above but substitute firebox area for grate area14,940
Power L13996
Power MT367.07

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