Zafra y Huelva 0-8-0 Locomotives in Spain


Class Details by Steve Llanso of Sweat House Media

Class 51/040-2291 (Locobase 5526)

Data from [], the web site of the Spanish National Railway (5 May 2003). See also Justo Arenillas in "La material ingles en las pequenas companias", Lineas Del Tren (as reproduced on [], viewed 28 April 2003). Works numbers were 1836-1844 in July 1886

The Z&H took delivery of this octuplet of eight-coupleds in three different years -- 1884, 1885, and 1887. Sturdy examples of the classic British eight-coupled, all of the class were taken into the RENFE when that national railway was formed in 1941.

See Locobase 3335 for an account of the origins and rationale for the Zafra y Huelva.

Principal Dimensions by Steve Llanso of Sweat House Media

Class51/040-2291
Locobase ID5526
RailroadZafra y Huelva
CountrySpain
Whyte0-8-0
Number in Class8
Road Numbers51-58/040-2291-2298
Gauge5'6"
Number Built8
BuilderDubs & Co
Year1884
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.80 / 3.90
Engine Wheelbase (ft / m)12.80 / 3.90
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)38.57 / 11.76
Axle Loading (Maximum Weight per Axle) (lbs / kg)26,896 / 12,200
Weight on Drivers (lbs / kg)107,585 / 48,800
Engine Weight (lbs / kg)107,585 / 48,800
Tender Loaded Weight (lbs / kg)63,493 / 28,800
Total Engine and Tender Weight (lbs / kg)171,078 / 77,600
Tender Water Capacity (gals / ML)2376 / 9
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 6.60 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)45 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)149.40 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)20" x 24.02" / 508x610
Tractive Effort (lbs / kg)25,419 / 11529.88
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.23
Heating Ability
Tubes (number - dia) (in / mm)174 - 1.969" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)15.81 / 4.82
Firebox Area (sq ft / m2)124.97 / 11.61
Grate Area (sq ft / m2)24.22 / 2.25
Evaporative Heating Surface (sq ft / m2)1569 / 145.72
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1569 / 145.72
Evaporative Heating Surface/Cylinder Volume179.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3618
Same as above plus superheater percentage3618
Same as above but substitute firebox area for grate area18,671
Power L13002
Power MT246.07

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