Eastern Algerian 2-6-0 Locomotives in Algeria


Class Details by Steve Llanso of Sweat House Media

Class 21 (Locobase 12487)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 23, p. 247. Works numbers 18802-18804 in March 1901.

An indication of what lay in wait for the thre eMoguls in this order comes from the specs, which include this succinct note: "Bad water, poor track, short [sic] curves ...W[eigh]t on any axle not over 27,600 lb."

Principal Dimensions by Steve Llanso of Middle Run Media

Class21
Locobase ID12487
RailroadEastern Algerian
CountryAlgeria
Whyte2-6-0
Number in Class3
Road Numbers21-23
Gauge4' 9"
Number Built3
BuilderBurnham, Williams & Co
Year1901
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.83 / 3.61
Engine Wheelbase (ft / m)19.58 / 5.97
Ratio of driving wheelbase to overall engine wheelbase 0.60
Overall Wheelbase (engine & tender) (ft / m)44.29 / 13.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)82,000 / 37,195
Engine Weight (lbs / kg)96,000 / 43,545
Tender Loaded Weight (lbs / kg)55,000 / 24,948
Total Engine and Tender Weight (lbs / kg)151,000 / 68,493
Tender Water Capacity (gals / ML)2700 / 10.23
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)59 / 1499
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)19,045 / 8638.68
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.31
Heating Ability
Tubes (number - dia) (in / mm)186 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11 / 3.35
Firebox Area (sq ft / m2)106 / 9.85
Grate Area (sq ft / m2)20 / 1.86
Evaporative Heating Surface (sq ft / m2)1163 / 108.09
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1163 / 108.09
Evaporative Heating Surface/Cylinder Volume164.53
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3400
Same as above plus superheater percentage3400
Same as above but substitute firebox area for grate area18,020
Power L14004
Power MT322.95

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