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The reference for locomotives and railcars

Egyptian National Railways class 16

Egypt 1901 35 produced
flickr/Historical Railway Images PD

The Egyptian State Railways switched to express locomotives with a leading bogie in 1901 with the class 16. The first ten machines of this type, which was clearly designed according to British principles, came from Neilson, Reid & Co. from Glasgow. There were also 15 examples from Henschel in Germany and ten from the StEG locomotive factory in Austria, which were virtually identical to the Scottish machines. Typical for locomotives used in Egypt was the driver's cab, which was only closed at the front, with ornaments on the roof.

As was common for most British steam locomotives of the time, the cylinders were in a slightly inclined position within the frame and below the smokebox. Here, for the first time in a production locomotive, the feedwater heater developed by Frederick Harvey Trevithick to save water was used. While the previous tests had been carried out with some voluminous attachments, the heater could now be accommodated in the smokebox. This already paved the way for the smokebox superheater. 

Technical data

General

Built
1901-1902
Manufacturers
Neilson, Reid & Co., Henschel, StEG
Wheel arrangement
4-4-0 (American)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Wheelbase
6.78 m
Service mass
45.8 t
Adhesion mass
29.9 t
Total mass
78.6 t
Rigid wheelbase
2.82 m
Axle load
16.3 t
Water capacity
11,364 l
Fuel capacity
5.6 t (coal)

Boiler

Grate area
1.983 m²
Firebox surface
11.762 m²
Tube heating surface
102.974 m²
Evaporative heating surface
114.735 m²
Total heating surface
114.7 m²

Power plant

Driver diameter
1,905 mm
Boiler pressure
11 bar
Expansion type
simple expansion
Cylinders
two, 457 x 610 mm

Power

Power source
steam
Estimated power
447 kW (608 PS)
Starting effort
62.7 kN

Calculated values

Factor of adhesion
1 : 4.67
Optimal speed
43 km/h
Power-to-weight ratio
9.8 kW/t
Heating Surface Equivalent
173.5 m²
Cylinder volume/HSE
1 : 1,153.35
Adhesive weight/Total
1 : 1.53
Tractive force/Heating surface
1 : 11.42
Grate area/Heating surface
1 : 57.86
Firebox/Tube surface
1 : 8.75
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