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Prussian EP 247 to 252
German Reichsbahn E 504
Germany | 1924 | 6 produced
E 50 51 in RAW Lauban
E 50 51 in RAW Lauban
collection Hanke / www.zackenbahn.de

When after the series production of the EP 236 to EP 246 more engines of this type were needed, an order was placed with BMAG and Maffei to build six more units. These other manufacturers changed some aspects of the locomotives, but hardly anything changed in terms of power and roles.

The most noticeable difference was the second hood. While the other machines only had a hood for the boiler on one side, the transformer on the new locomotives was above the bogie and outside of the actual locomotive body. The motor now used was slightly smaller than the old one, but it also delivered a lower hourly output. Due to the 40 cm increase in overall length, the ability to negotiate curves had to be improved. This was achieved, among other things, by increasing the lateral play of the bissel axle from 55 to 80 mm.

The locomotives were all delivered in 1924 and shortly afterwards were designated E 50 47 to E 50 52, analogous to their predecessors. At the Reichsbahn, they suffered the same fate as the E 50 36 to 46. After the end of the war, only two were still operational and these were parked together with the remaining engines in the scrapyard of the GDR Reichsbahn, since most of the overhead lines had to be dismantled and none found any use. So they were officially retired and scrapped in 1956.

General
Built1924
Manufacturermechanical part: BMAG, electrical part: Maffei
Axle config2-D-1 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length49 ft 10 7/16 in
Wheelbase38 ft 2 11/16 in
Service weight251,768 lbs
Adhesive weight149,253 lbs
Axle load38,581 lbs
Power
Power sourceelectric - AC
Electric system15.000 V 16⅔ Hz
Hourly power2,548 hp (1,900 kW)
Continuous power2,146 hp (1,600 kW)
Top speed56 mph
Starting effort46,311 lbf
Power Plant
Boiler
Calculated Values
electric locomotive
passenger
rod drive
last changed: 02/2022
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