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The reference for locomotives and railcars

Palatinate Railways G 4III

Germany 1896 2 produced
Die Lokomotive, December 1906

In 1896, the Pfalzbahn saw the need for more heavy freight locomotives. Since the G 4II was already in use, which was identical to the Bavarian BB I, the focus again oriented on Bavaria and two locomotives that were based on the Bavarian E I of the Sondermann design were procured. This design means that on each side a high and low pressure cylinder are nested together as one assembly, thus saving space. Apparently, however, this arrangement did not work, because both the Bavarian prototypes and the two Palatinate G 4III were converted into normal two-cylinder locomotives before 1900. Otherwise, the two were apparently suitable for everyday use, because after the rebuild they were still in use into the 1920s. With a driving wheel diameter of only 1,160 mm, they only reached 55 km/h, but this was sufficient for freight trains and at the same time ensured high tractive effort.

Technical data

General

Built
1896
Manufacturers
Krauss
Wheel arrangement
2-8-0 (Consolidation)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Length
16.71 m
Service mass
59.5 t
Adhesion mass
51.5 t
Axle load
13 t
Water capacity
12,000 l
Fuel capacity
5 t (coal)

Boiler

Grate area
2.22 m²
Evaporative heating surface
150.5 m²
Total heating surface
150.5 m²

Power plant

Driver diameter
1,160 mm
Boiler pressure
13 bar
Expansion type
compound
Cylinders
four, HP: 370 x 560 mm and LP: 710 x 560 mm

Power

Power source
steam
Estimated power
550 kW (748 PS)
Top speed
55 km/h
Starting effort
114.9 kN
Starting effort simple
137.8 kN

Calculated values

Factor of adhesion
1 : 4.40
Optimal speed
29 km/h
Power-to-weight ratio
9.2 kW/t
Adhesive weight/Total
1 : 1.16
Tractive force/Heating surface
1 : 15.94
Grate area/Heating surface
1 : 67.79
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