Egyptian National Railways class 16
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