Development History
In 1950, the Deutsche Bundesbahn decided to develop two base types of electric locomotives with largely standardised components: A twelve wheel (UIC: Co'Co') freight train locomotive as successor for the Class E 94, and an eight wheel (UIC: Bo'Bo') general purpose electric locomotive as successor for the Class E 44. As a new feature the engineers should be able to be seated, whereas formerly they had to stand in order to boost their attentiveness.
This multi-purpose locomotive received the working title E 46, but was then renamed to Class E 10, once the required maximum speed was increased from 125 to 130 km/h (78 to 81 mph), which formally made this model an express train locomotive. The trial program, which consisted of 5 prototypes of class E 10.0, resulted in the realization that a single uniform type of electric locomotive was not sufficient to cover all needs. The modified program then included a local passenger train locomotive (class E 41); an express train locomotive (class E 10), which could be changed into a freight train locomotive (Class E 40) with a gear ratio change, and a heavy six-axle freight train locomotive (class E 50). In addition plans for a high speed electric locomotive Class E 01 were made, but quickly cancelled, as, due to low maximum speeds on the main lines at that time, the class E 10 was seen as sufficient for express trains.
Read more about this topic: DB Class E 10
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