page_title: South African Class 14E
section_title: Characteristics
hierarchical_section_title: South African Class 14E / Characteristics
caption_attribution_description: English: Spoornet Class 14E wheels use double helical or herringbone gears Location: Bellville, Cape Town
context_page_description: The Spoornet Class 14E of 1991 was a South African electric locomotive.
  In 1990, Spoornet took delivery of three prototype Class 14E dual voltage electric mainline locomotives with a Bo-Bo wheel arrangement. They were the first dual voltage 3 kV DC and 25 kV AC locomotives to see service on South African rails when they were placed in service in 1991 and were followed in 1994 by ten locally manufactured Class 14E1 locomotives.
context_section_description: These dual cab locomotives had a roof access ladder on one side only, just to the right of the cab access door. The roof access ladder end was designated the no. 1 end. A corridor along the centre of the locomotive connected the cabs.
  Unlike the later dual voltage Classes 19E, 20E and 21E which were equipped to automatically transition between AC and DC mode on the run, the Class 14E had to be stopped and then restarted under the different voltage. Upon their introduction in 1990, these were some of the most powerful electric locomotives on the Spoornet roster. They featured three-phase AC motors (induction motors) made by Siemens. In addition, they incorporated Siemens' sophisticated train communication network system.
  All earlier South African electric locomotives, with the exception of the Orex Line's Class 9Es, ran on spoked wheels using spur gears. Amongst South African electric locomotives, the Class 14E was the first to have solid wheels with double helical or herringbone gears and with a traction motor to wheel gear ratio of 20:103. This gear ratio had the result that, while the three prototypes were very fast, they struggled to pick up a load. The locally built Class 14E1, on the other hand, ran on spoked wheels with helical gears and had a more conservative traction motor to wheel gear ratio of 18:67.
caption: Class 14E wheelset with herringbone gear
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