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Bavarian G 4/5 H
German Reichsbahn class 568-11
Germany | 1915 | 230 produced
The 56 1117, one of the last examples, at the time of the Deutsche Reichsbahn
The 56 1117, one of the last examples, at the time of the Deutsche Reichsbahn

The G 4/5 H was a freight locomotive with a 2-8-0 wheel arrangement, which Maffei developed on the basis of the G 4/5 N, which was manufactured in smaller numbers. With its complex engine, it achieved the highest power of all German locomotives with this wheel arrangement. While the predecessor still had a two-cylinder saturated engine, the G 4/5 H was a superheated locomotive with four cylinders in compound design. This design was not very widespread among freight locomotives in Germany, but it increased the power compared to comparable models. This meant that 995 tonnes could be transported at 40 km/h on a gradient of 0.5 percent, as well as 535 tonnes at 1.4 percent at 30 km/h.

A very similar locomotive had already been delivered to the Baden State Railways as the VIII e a few years earlier. In contrast to this, all cylinders on the G 4/5 H acted on the second coupled axle. As with the VIII e, the use of a bar frame proved to be advantageous for maintenance, as this had a lower installation height than a plate frame of the same strength and thus facilitated access to the inner high-pressure cylinders. The leading axle was designed as an Adams axle, since other designs with a drawbar would have robbed the engine of the space.

Maffei produced 210 engines between 1915 and 1919, another 20 came from Krauss. Of these, ten went to the Military General Directorate in Brussels and 25 were ordered directly for use in the war. After the end of the war, 48 locomotives were given to France as reparations and 13 more to Belgium.

The Reichsbahn took over all remaining locomotives and numbered them as class 568-11. Despite their good performance, the locomotives were taken out of service as early as 1933, which in retrospect is partly due to the aversion of Richard Paul Wagner, head of the design department, to compound locomotives. Some of the other 2-8-0 freight locomotives with conventional engines survived considerably longer, despite being fewer in number. For the same reason, the Reichsbahn did not procure any new locomotives with compound engines, except for test purposes. After the war, depending on the source, there were still two or three vehicles, but they were withdrawn and scrapped in 1947. As a result, no G 4/5 H entered service with either of the two new German railway companies.

General
Built1915-1919
ManufacturerMaffei, Krauss
Axle config2-8-0 (Consolidation) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length59 ft 10 1/2 in
Wheelbase23 ft 11 3/8 in
Fixed wheelbase15 ft 9 in
Total wheelbase49 ft 0 9/16 in
Empty weight152,119 lbs
Service weight167,551 lbs
Adhesive weight141,096 lbs
Total weight268,082 lbs
Axle load35,274 lbs
Water capacity5,336 us gal
Fuel capacity14,330 lbs (coal)
Power
Power sourcesteam
Estimated power1,341 hp (1,000 kW)
Optimal speed26 mph
Top speed37 mph
Starting effort32,874 lbf
with start valve39,449 lbf
Power Plant
Driver diameter51.2 in
Boiler pressure232 psi
Expansion typecompound
Cylindersfour, HP: 15 3/4 x 24 in
and LP: 24 7/16 x 25 3/16 in
Boiler
Grate area35.5 sq ft
Firebox area129.2 sq ft
Tube heating area1,797.6 sq ft
Evaporative heating area1,926.7 sq ft
Superheater area624.3 sq ft
Total heating area2,551 sq ft
Calculated Values
steam locomotive
freight
Von Borries compound
last changed: 01/2022
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