Bavarian G 4/5 N

Bavarian G 4/5 N
DRG Class 56.4
Number(s) DRG 56 401–404
Quantity 7
Manufacturer Krauss
Year(s) of manufacture 1905–1906
Retired 1927
Wheel arrangement 2-4-0
Axle arrangement 1'D n2
Gauge 1,435 mm
Length over buffers 18,354 mm
Service weight 64.8 t
Adhesive weight 55.9 t
Axle load 14.4 t
Driving wheel diameter 1,270 mm
Leading wheel diameter 1,006 mm
No. of cylinders 2
Cylinder bore 540 mm
Piston stroke 610 mm
Boiler Overpressure 12 bar
Grate area 2.85 m²
Evaporative heating area 179.70 m²
Tender Bavarian 2'2' T 18.2
Water capacity 18.2 m³

The Bavarian Class G 4/5 N was an early German steam locomotive built for the Royal Bavarian State Railways (K.Bay.Sts.B.). Its design was based on that of the Class E I and it had unmistakable similarities to the final series of that class. Had the K.Bay.Sts.B. not changed their locomotive classification system just before this engine was produced it may well have entered service as the latest variant of E I.

In developing the E I and G 4/5 N, advantage was taken of the knowledge gained from two goods locomotives bought from the United States and which were also classified as E I's.

The firm of Krauss supplied seven of these locomotives in 1905 and 1906. As a result of the relatively high position of the boiler, the firebox was located above the locomotive frame. This characteristic design feature of Bavarian locomotives, influenced by Maffei, could already be seen and was utilised subsequently by the Baden VIIIe, Swiss GB C 4/5 and eventually the Bavarian G 4/5 H - albeit the latter being developed by Maffei.

The Deutsche Reichsbahn took over four examples from the Bavarian State Railways, which had survived World War I and gave them the operating numbers 56 401–404. They continued in service until 1927.

The engines were equipped with a Bavarian 2'2' T 18,2 tender.

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