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South African Class 6E1, Series 4 E1446 at Sentrarand Yard, Gauteng, 8 October 2009 Power type Electric Designer Union Carriage & Wagon Builder Union Carriage & Wagon Model UCW 6E1 Build date 1973-1974 Total produced 100 UIC classification Bo-Bo Gauge 3 ft 6 in (1,067 mm) Cape gauge Bogies 3.430 m (11 ft 3.0 in) wheelbase Wheel diameter 1,220 mm (48 in) Wheelbase 11.279 m (37 ft 0.1 in) Length 15.494 m (50 ft 10.0 in) Width 2.896 m (9 ft 6.0 in) Height 4.089 m (13 ft 5.0 in) pantographs down Axle load 22,226 kg (21.875 long tons) Locomotive weight 88,904 kg (87.500 long tons) Current collection method Pantographs Traction motors Four AEI 283 AZ Transmission 18/67 Gear ratio Top speed 113 km/h (70 mph) Power output Per motor: 623 kW (835 hp) 1 hour 563 kW (755 hp) continuous Total: 2,492 kW (3,342 hp) 1 hour 2,252 kW (3,020 hp) continuous Tractive effort 311 kN (70,000 lbf) starting 221 kN (50,000 lbf) 1 hour 193 kN (43,000 lbf) continuous at 40 km/h (25 mph) Locomotive brakes Regenerative Train brakes Air & Vacuum Career South African Railways Spoornet Transnet Freight Rail Shosholoza Meyl Class Class 6E1 Power class 3 kV DC Number in class 100 Number E1446-E1545[1] Delivered 1973-1974 First run 1973 Between 1973 and 1974 the South African Railways, later renamed Spoornet and then Transnet Freight Rail, placed one hundred Class 6E1, Series 4 electric locomotives in main line service. One of them holds the world rail speed record on 3 feet 6 inches (1,067 millimetres) Cape gauge.[1][2][3] Contents 1 Manufacturer 2 Features 2.1 Orientation 2.2 Series identifying features 3 Service 4 World speed record 5 Class 16E 6 Liveries 7 See also 8 References Manufacturer The Class 6E1 3 kV DC electric locomotive was designed and built for the South African Railways (SAR) by Union Carriage and Wagon (UCW) in Nigel, Transvaal. One hundred Class 6E1, Series 4 locomotives were delivered between 1973 and 1974, numbered E1446 to E1545.[4] UCW did not allocate builder’s numbers to the locomotives it built for the SAR. While the usual practice by most other locomotive builders was to allocate builder’s numbers or works numbers to record the locomotives built by them, UCW simply used the SAR road numbers for their record keeping.[1] Features To ensure the maximum transfer of power to the rails without causing wheel slip, the Class 6E1 was built with sophisticated traction links between the bogies and the frames and equipped with electronic wheel slip detection. These traction struts and linkages were to become a distinguishing feature of most subsequent South African electric locomotive models.[2] Orientation These dual cab locomotives have a roof access ladder on one side only, just to the right of the cab access door. The roof access ladder end is marked as the number 2 end.[1] Series identifying features The South African Class 6E1 was produced in eleven series over a period of nearly sixteen years, nine hundred and sixty units altogether, all built by UCW. This makes the 6E1 the most numerous single locomotive class ever to have seen service in South Africa and serves as ample proof of a highly successful design.[1][2] Number plate on E1537 While some Class 6E1 series are visually indistinguishable from their predecessors or successors, some externally visible changes did occur over the years. Series 2 and all subsequent Class 6E1 series can be distinguished from Series 1 locomotives by their sandboxes that are not mounted on the bogies as before, but along the bottom edge of the locomotive body with the sandbox lids fitting into recesses in the body sides. The Series 3 to Series 5 locomotives are visually indistinguishable from each other, the only externally visible difference being the wider stirrup middle step below the side doors of Series 3 number E1346 and later locomotives.[1][2][5][6] Service The Class 6E1 saw service all over most of both of the Transnet Freight Rail (TFR) 3 kV DC main line networks. The smaller network is the Cape Western line between Cape Town and Beaufort West, with the locomotives based at the Bellville Depot in Cape Town.[3] The larger network covers portions of the Northern Cape, the Free State, Natal, Gauteng, North West Province and Mpumalanga, the main routes in this vast area being as follows:[3] From Johannesburg in Gauteng via Kimberley to Hotazel in the Northern Cape. From Johannesburg via Kroonstad to Bloemfontein in the Free State. From Johannesburg to Durban in Natal via Volksrust, Newcastle and Ladysmith. From Johannesburg via Pretoria in Gauteng and Witbank in Mpumalanga to Komatipoort on the Mozambique border, as well as to Derwent and Roossenekal. From Johannesburg via Springs to Witbank. From Johannesburg via Coligny to Lichtenburg. From Durban in Natal to Empangeni in the north and Port Shepstone in the south. From Ermelo to Ogies and Wonderfontein in Mpumalanga. From Kroonstad via Bethlehem in the Free State and via Ladysmith to Vryheid in Natal. The electric locomotives allocated to depots within this network are largely pooled and can operate anywhere in the network as required by the Operating Department, but they return to their home depots for maintenance every twenty-eight days. In 2011 the Class 6E1 began to be withdrawn from the NatCor (Natal corridor) line between Johannesburg and Durban, being replaced with Class 18E locomotives.[3] World speed record In 1978 one of the Series 4 locomotives, E1525, was modified for experiments in high speed traction by re-gearing the traction motors and installing SAR designed Scheffel bogies and a streamlined nose cone. In this configuration E1525 managed to reach a speed of 245 kilometres per hour (152 miles per hour) on 31 October 1978 on a stretch of track between Westonaria and Midway, a still unbroken world record on 3 feet 6 inches (1,067 millimetres) Cape gauge.[2][3][7] During November 1980 the same locomotive was used to test the British Rail-Brecknell Willis high speed pantograph, then still under development, as part of the SAR’s research towards introducing a new high speed MetroBlitz service between Pretoria and Johannesburg. A number of European pantographs were being evaluated for use on the Class 6E1, with the trains running at 90 miles per hour (140 kilometres per hour) under catenary that usually saw nothing above 50 miles per hour (80 kilometres per hour). Testing took place over a 10 kilometres (6.2 miles) stretch of straight track between Rosslyn and De Wildt on the line between Pretoria and Brits. During the trials, speeds of up to 125 miles per hour (201 kilometres per hour) were achieved with the pantograph[7] The MetroBlitz service commenced in January 1984. This testing project eventually bore more fruit in 2011 with the opening of the 1,435 millimetre (4 feet 8½ inches) Standard gauge Gautrain connecting Pretoria, Johannesburg and the O.R. Tambo Airport in Kempton Park.[7] Class 16E During 1990 and 1991 Spoornet semi permanently coupled several pairs of otherwise unmodified Class 6E1 locomotives, reclassified them to Class 16E and allocated a single running number to each pair, with the individual locomotives in the pairs inscribed “A” or “B”. The aim was to accomplish savings on cab maintenance by coupling the locomotives at their number 1 ends, abandoning the number one end cabs in terms of maintenance and using only the number two end cabs. One known Series 4 locomotive, E1457, was part of such a Class 16E pair and became Class 16E 16-305B.[3] Liveries All the Class 6E1, Series 4 locomotives were delivered in the SAR Gulf Red and yellow whiskers livery. The main picture shows E1446, the first of the Series 4, in Spoornet orange livery. E1481 at Beaufort West, 16 September 2009, in SAR maroon & whiskers livery E1461 at Capital Park, Pretoria, Gauteng, 9 May 2006, in Spoornet maroon livery E1464 at Bellville, 26 April 2009, in Spoornet blue livery with solid numbers E1464 at Bellville, Cape Town, 26 January 2010, in Shosholoza Meyl livery See also South African Class 6E1, Series 1 South African Class 6E1, Series 2 South African Class 6E1, Series 3 South African Class 6E1, Series 5 South African Class 6E1, Series 6 South African Class 6E1, Series 7 South African Class 6E1, Series 8 South African Class 6E1, Series 9 South African Class 6E1, Series 10 South African Class 6E1, Series 11 Electric locomotive numbering and classification Narrow gauge rail speed record Electric locomotive List of South African locomotive classes References ^ a b c d e f South African Railways Index and Diagrams Electric and Diesel Locomotives, 610mm and 1065mm Gauges, Ref LXD 14/1/100/20, 28 January 1975, as amended ^ a b c d e Paxton, Leith; Bourne, David (1985). Locomotives of the South African Railways (1st ed.). Cape Town: Struik. pp. 128-129. ISBN 0869772112.  ^ a b c d e f Middleton, John N. (2002). Railways of Southern Africa Locomotive Guide - 2002 (as amended by Combined Amendment List 4, January 2009) (2nd, Dec 2002 ed.). Herts, England: Beyer-Garratt Publications. pp. 49-50.  ^ "UCW - Electric locomotives". The UCW Partnership. Archived from the original on 12 October 2007. http://web.archive.org/web/20071012023401/http://www.ucw.co.za/pdf/electric_loco.pdf. Retrieved 30 September 2010.  ^ E1345 with narrow stirrup ^ E1346 with wide stirrup ^ a b c Pantograph Testing in South Africa in 1980      Wikimedia Commons has media related to: South African Class 6E1 Series 4 v · d · e Locomotives of South Africa Steam Blackie • Natal • A • B • C • C1 • C2 • D • E • Exp-1 • Exp-2 • Exp-3 • Exp-4 • Exp-5 • Exp-6 • F • FC • FD • G • GD • GDA • GE • GEA • GF • GG • GL • GM • GMAM • GO • H • H1 • H2 • HF • J • K • KM • MA • MB • MC • MC1 • MD • ME • MF • MG • MH • MJ • MJ1 • S • S1 • S2 • 1 • 1A • 1B • 2 • 2C • 3 • 3A • 3B • 4 • 4A • 5 • 5A • 5B • 6 • 6A • 6B • 6C • 6D • 6E • 6F • 6G • 6H • 6J • 6K • 6L • 6Y • 6Z • 7 • 7A • 7B • 7C • 7D • 7E • 7F • 8 • 8A • 8B • 8C • 8D • 8E • 8F • 8X • 8Y • 8Z • 9 • 10 • 10A • 10B • 10C • 10D • 11 • 12 • 12A • 12B • 13 • 14 • 14A • 14B • 14C • 15 • 15A • 15B • 15CA • 15CB • 15E • 15F • 16 • 16A • 16B • 16C • 16D • 16DA • 16E • 17 • 18 • 19 • 19A • 19B • 19C • 19D • 20 • 21 • 23 • 24 • 25 • 25NC • 26 • NG-Zwillinge • NG1 • NG2 • NG3 • NG4 • NG5 • NG6 • NG7 • NG8 • NG9 • NG10 • NG-G11 • NG-G12 • NG-G13 • NG-G14 • NG15 • NG-G16 • NG-G16A Diesel Diesel electric 31-000 • 32-000 • 32-200 • 33-000 • 33-200 • 33-400 • 34-000 • 34-200 • 34-400 • 34-500 • 34-600 • 34-800 • 34-900 • 35-000 • 35-200 • 35-400 • 35-600 • 36-000 • 36-200 • 37-000 • 39-000 • 39-200 • 43-000 • 91-000 • DS • DS1 Diesel hydraulic 61-000 Electro diesel 38-000 Electric 1E • 2E • 3E • 4E • 5E-S1 • 5E-S2 • 5E-S3 • 5E1-S1 • 5E1-S2 • 5E1-S3 • 5E1-S4 • 5E1-S5 • 6E • 6E1-S1 • 6E1-S2 • 6E1-S3 • 6E1-S4 • 6E1-S5 • 6E1-S6 • 6E1-S7 • 6E1-S8 • 6E1-S9 • 6E1-S10 • 6E1-S11 • 7E • 7E1 • 7E2-S1 • 7E2-S2 • 7E3-S1 • 7E3-S2 • 7E4 • 8E • 9E-S1 • 9E-S2 • 10E • 10E1-S1 • 10E1-S2 • 10E2 • 11E • 12E • 14E-S1 • 14E-S2 • 15E • 16E • 17E • 18E-S1 • 18E-S2 • 19E • E38 • ES • Exp-AC Electric multiple 357 • 5M2/5M2A • 8M • 10M List of South African locomotive classes  • Rail transport in South Africa