Enyati Collieries 2-10-2 Locomotives in South_Africa


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 5405)

Found in the [] holding of Baldwin narrow-gauge export locomotives (visited 22 Feb 2003). See also DeGolyer, Vol 72, pp. 392 and Vol 79, pp. 571+. Works numbers were 58046 in September 1924 and 61949 in 1936.

This locomotive is very similar to the 2-10-2T built for the Northern Natal Navigation Collieries (Locobase 2349). It has a lower boiler pressure and smaller heating surface totals, but overall, there's not much difference. Most of the accessories followed British practice (Ramsbottom safety valves, for example) and the firebox was made of arsenical copper. Ten-inch (254 mm) piston valves supplied steam to the cylinders.

Baldwin's specification shows that the two had only modest grades of 1 1/2% to conquer and relatively generous curves with radii of 500 feet (152.4 metres).

Principal Dimensions by Steve Llanso of Middle Run Media

Class3
Locobase ID5405
RailroadEnyati Collieries
CountrySouth Africa
Whyte2-10-2T
Number in Class2
Road Numbers3, 4
Gauge3'6"
Number Built2
BuilderBaldwin
Year1924
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.33 / 4.67
Engine Wheelbase (ft / m)29.58 / 9.02
Ratio of driving wheelbase to overall engine wheelbase 0.52
Overall Wheelbase (engine & tender) (ft / m)29.58 / 9.02
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)134,350 / 60,940
Engine Weight (lbs / kg)172,850 / 78,404
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)172,850 / 78,404
Tender Water Capacity (gals / ML)2200 / 8.33
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)3 / 3
Minimum weight of rail (calculated) (lb/yd / kg/m)45 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x610
Tractive Effort (lbs / kg)31,562 / 14316.30
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.26
Heating Ability
Tubes (number - dia) (in / mm)120 - 2" / 51
Flues (number - dia) (in / mm)20 - 5.375" / 137
Flue/Tube length (ft / m)14.67 / 4.47
Firebox Area (sq ft / m2)95 / 8.83
Grate Area (sq ft / m2)24.80 / 2.30
Evaporative Heating Surface (sq ft / m2)1421 / 132.01
Superheating Surface (sq ft / m2)344 / 31.96
Combined Heating Surface (sq ft / m2)1765 / 163.97
Evaporative Heating Surface/Cylinder Volume180.43
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4464
Same as above plus superheater percentage5312
Same as above but substitute firebox area for grate area20,349
Power L17986
Power MT655.23

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