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- W643566698 abstract "Composite 655/C, originally developed for suburban and main line passenger services in South Africa, recently completed a two year service period on a bullet-nosed test locomotive hauling an unbraked test vehicle equipped with High Stability trucks. Full brake applications on downgrade from initial speeds ranging between 200 km/h and 245 km/h were made, resulting in peak energy dissipation rates in the order of 1000 kW/wheel. Subsequent examination of tread surfaces following a series of more than fifty stops from above 200 km/h indicated that no thermal cracking took place. Simultaneously with the above, composite 840/N was developed for direct replacement of cast iron on freight stock. Considerable operational improvements and economic savings on materials consumed, labor, tread wear, and increased payloads were actually established under practical conditions. Approximately 30,000 freight vehicles have to date been converted in South Africa. This involves all air braked trains; a conversion program for extended testing on vacuum braked vehicles continues on the remaining fleet of approximately 112,000 four-axle freight vehicles. It is anticipated that the latter will, in the near future, also be able to operate at considerably reduced running cost and greater operational safety. Depending on applicable circumstances, consideration will then be given to improve on the present average operating speeds in general." @default.
- W643566698 created "2016-06-24" @default.
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- W643566698 date "1979-09-01" @default.
- W643566698 modified "2023-09-26" @default.
- W643566698 title "A NEW INTERFACIAL FRICTION CONCEPT FOR ON-TREAD BRAKING OF RAILWAY ROLLING STOCK" @default.
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