Central Vicente/Central San Vicente 0-4-4 "Forney" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 13764)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 36, p.236. Works numbers were 33583 in September 1909 and 35632 in December 1910.

Ernst Wiener's string of orders for small plantation tanks continued with this pair delivered a year apart. They were required to bend around 75-foot (22.9-metre) curve radii and rattle along 20-lb/yard (10-kg/metre) rail.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID13,764
RailroadCentral Vicente/Central San Vicente
Number in Class2
Road Numbers4-5
Gauge76 cm
Number Built2
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)4 / 1.22
Engine Wheelbase (ft / m)14 / 4.27
Ratio of driving wheelbase to overall engine wheebase 0.29
Overall Wheelbase (engine & tender) (ft / m)14 / 4.27
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)20,000 / 9072
Engine Weight (lbs / kg)32,000 / 14,515
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)32,000
Tender Water Capacity (gals / ML)550 / 2.08
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)17 / 8.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)29 / 737
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)8" x 14" / 203x356
Tractive Effort (lbs / kg)4202 / 1906.00
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.76
Heating Ability
Firebox Area (sq ft / m2)25.90 / 2.41
Grate Area (sq ft / m2) 4.60 / 0.43
Evaporative Heating Surface (sq ft / m2)192 / 17.84
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)192 / 17.84
Evaporative Heating Surface/Cylinder Volume235.73
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation736
Same as above plus superheater percentage736
Same as above but substitute firebox area for grate area4144
Power L13053
Power MT673.07

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