E de F de Coiax 4-6-0 Locomotives in Brazil


Class Details by Steve Llanso of Sweat House Media

Class 21 (Locobase 4426)

Data from narrowmind.railfan.net; works number 62437 in August 1940.

Some of the figures in the original document were difficult to read, in particular those relating to adhesion and engine weights. This wood-burner had a large firebox.

Principal Dimensions by Steve Llanso of Middle Run Media
Class21
Locobase ID4426
RailroadE de F de Coiax
CountryBrazil
Whyte4-6-0
Number in Class1
Road Numbers21
Gaugemetre
Number Built1
BuilderBaldwin
Year1940
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.83 / 2.39
Engine Wheelbase (ft / m)17.17 / 5.23
Ratio of driving wheelbase to overall engine wheelbase 0.46
Overall Wheelbase (engine & tender) (ft / m)44.23 / 13.48
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2440 / 9.24
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)198.70 / 1370
High Pressure Cylinders (dia x stroke) (in / mm)14" x 23" / 356x584
Tractive Effort (lbs / kg)15,862 / 7194.89
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)59 - 2" / 51
Flues (number - dia) (in / mm)12 - 5.375" / 137
Flue/Tube length (ft / m)14.42 / 4.40
Firebox Area (sq ft / m2)78 / 7.25
Grate Area (sq ft / m2)31.10 / 2.89
Evaporative Heating Surface (sq ft / m2)766 / 71.19
Superheating Surface (sq ft / m2)197 / 18.31
Combined Heating Surface (sq ft / m2)963 / 89.50
Evaporative Heating Surface/Cylinder Volume186.93
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation6180
Same as above plus superheater percentage7415
Same as above but substitute firebox area for grate area18,598
Power L111,362
Power MT

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