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Palestine Railways class P

Palestine 1935 8 produced
Locomotive Magazine, July 1935

The class P of the Palestine Railways consisted of six 4-6-0 locomotives built by North British in 1935 and numbered 60 to 65. They had been ordered to speed up traffic on the line between Haifa and El Kantara when it became clear that the older class H built by Baldwin could no longer keep up with the growing requirements on this line. Although officially being classed as mixed-traffic locomotives, their main task was to haul expresses which also had CIWL sleeping cars in them. The drivers of the class P were 4 3/4 inches bigger than those of the class H.

The locomotives with their Belpaire fireboxes looked British, but they had received American-style bogie tenders for greater capacity and better running characteristics. Built for burning Welsh coal, they were converted to oil burning in World War II when import of coal from Wales became too dangerous. All six survived this and the following conflicts and came to Israel Railways in 1948. After diesel locomotives had taken over the work on the main line in 1956, the class P still found some work elsewhere and was withdrawn in 1959 when steam service ended in Israel. Only the tender of 62 was preserved.

Technical data

General

Built
1935
Manufacturers
North British
Wheel arrangement
4-6-0 (Ten-wheeler)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Wheelbase
7.90 m
Service mass
70 t
Adhesion mass
51.8 t
Total mass
129.3 t
Rigid wheelbase
4.27 m
Axle load
17.3 t
Water capacity
29,549 l
Fuel capacity
6.6 t (coal)

Boiler

Grate area
2.694 m²
Firebox surface
16.351 m²
Tube heating surface
132.201 m²
Evaporative heating surface
148.552 m²
Superheater surface
32.516 m²
Total heating surface
181.1 m²

Power plant

Driver diameter
1,695 mm
Boiler pressure
13.1 bar
Expansion type
simple expansion
Cylinders
two, 521 x 711 mm

Power

Power source
steam
Estimated power
1,268 kW (1,724 PS)
Starting effort
126.6 kN

Calculated values

Factor of adhesion
1 : 4.01
Optimal speed
61 km/h
Power-to-weight ratio
18.1 kW/t
Heating Surface Equivalent
295.3 m²
Cylinder volume/HSE
1 : 1,025.57
Adhesive weight/Total
1 : 1.35
Tractive force/Heating surface
1 : 14.61
Grate area/Heating surface
1 : 67.21
Firebox/Tube surface
1 : 8.09
Total/Superheater
1 : 4.57
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