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Class of Australian Co′Co′ diesel-electric locomotives From Wikipedia, the free encyclopedia
The R Class are diesel locomotives built by English Electric, Rocklea for the Western Australian Government Railways in 1968. They were followed by the revised RA class.
Western Australian Government Railways R class | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The R class were a hood type general purpose diesel-electric locomotive. They were similar to the Queensland Railways 1300 class. All equipment, except traction motors, were interchangeable with the standard gauge K class. The bogies are an English Electric design with low weight transfer characteristics. They feature fully equalised primary spring gear, all traction motors in each bogie mounted with the nose-suspension facing inwards, traction thrust at near axle level and long pivot centres to reduce inter-bogie transfer. Adhesion loss at maximum tractive effort is limited to 4.5 per cent allowing 1,830 long tons (1,860 t; 2,050 short tons) trailing load to be hauled up a 1 in 100 grade.[1]
In 1968 the Western Australian Government Railways took delivery of five narrow gauge versions of the K class for use on bauxite traffic, the last three being fitted with 6 tonnes (5.9 long tons; 6.6 short tons) of ballast to improve their tractive effort. All were fitted with dynamic brakes.[2][3][4]
Serial number | Entered service | Road number | Last owner | Status |
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A.166 | 12 February 1968 | R1901 | Westrail | Scrapped, Midland Workshops (October 1992) |
A.167 | 15 March 1968 | R1902 | Greentrains | Scrapped, Bellevue (28 May 2016) |
A.171 | 2 May 1968 | R1903 | Westrail | Scrapped, Midland Workshops (October 1992) |
A.173 | 14 June 1968 | R1904 | Westrail | Scrapped, Midland Workshops (October 1992) |
A.174 | 26 June 1968 | R1905 | Westrail | Scrapped, Midland Workshops (October 1992) |
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