Palestine Railways class H
The Palestine Military Railway, operated by the British, needed new mixed traffic locomotives in World War I since their existing British mineral engines were not powerful enough for future needs. Since British manufacturers did not have enough capacities, the order went to Baldwin. In the short period in October and November 1918, they built 50 ten-wheelers.
In 1920, they came to the civil Palestine Railways and were designated class H. Due to missing turntables, six were brought to Armstrong Whitworth in 1926 to rebuild them into 4-6-2T tank locomotives which were designated class H2. Six others received copper fireboxes at the same company, while again others were fitted by the PR itself with Belpaire fireboxes. Between 1937 and 1938, the class H3 was created by the PR by rebuilding five to 4-6-4T tank locomotives.
In World War II, when Palestine found it hard to acquire Welsh coal, they started to convert all to oil firing. This process was completed in 1943. With the founding of Israel in 1948, 44 remaining locomotives came to Israel Railways. These were 33 original class H locomotives, six H2 and five H3. The last ones were withdrawn around 1960.
Technical data
General
- Built
- 1918
- Manufacturers
- Baldwin
- Wheel arrangement
- 4-6-0 (Ten-wheeler)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Length
- 19.24 m
- Wheelbase
- 7.54 m
- Service mass
- 68.8 t
- Adhesion mass
- 50 t
- Total mass
- 118.6 t
- Rigid wheelbase
- 4.06 m
- Axle load
- 17.3 t
- Water capacity
- 21,823 l
- Fuel capacity
- 9.1 t (coal)
Boiler
- Grate area
- 2.713 m²
- Firebox surface
- 13.099 m²
- Tube heating surface
- 133.502 m²
- Evaporative heating surface
- 146.601 m²
- Superheater surface
- 34.003 m²
- Total heating surface
- 180.6 m²
Power plant
- Driver diameter
- 1,575 mm
- Boiler pressure
- 13.1 bar
- Expansion type
- simple expansion
- Cylinders
- two, 483 x 660 mm
Power
- Power source
- steam
- Estimated power
- 858 kW (1,167 PS)
- Top speed
- 69 km/h
- Starting effort
- 108.8 kN
Calculated values
- Factor of adhesion
- 1 : 4.51
- Optimal speed
- 48 km/h
- Power-to-weight ratio
- 12.5 kW/t
- Heating Surface Equivalent
- 280.1 m²
- Cylinder volume/HSE
- 1 : 862.55
- Adhesive weight/Total
- 1 : 1.38
- Tractive force/Heating surface
- 1 : 12.58
- Grate area/Heating surface
- 1 : 66.57
- Firebox/Tube surface
- 1 : 10.19
- Total/Superheater
- 1 : 4.31