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Westrail S class
S2106 in July 2008
Type and origin Power type Diesel-electric Builder Clyde Engineering, Forrestfield Model Electro Motive Diesel JT42C Build date 1998 Total produced 11
Specifications Configuration: ​  • AAR C-C  • UIC Co-Co Gauge 3 ft 6 in (1,067 mm) Length 20.8 m (68 ft 3 in) Loco weight 116 long tons (117.9 t; 129.9 short tons) Fuel type Diesel Prime mover Electro Motive Diesel 12N-710GB-ES
Performance figures Maximum speed 115 km/h (71 mph) Power output 3,010 hp (2,240 kW) Tractive effort 74,440 lbf (331.1 kN)
Career Operators Westrail Number in class 11 Numbers S3301–S3311 First run 6 March 1998 Current owner Aurizon Disposition 11 in service

The S class are a class of diesel locomotives built by Clyde Engineering, Forrestfield for Westrail in 1998.

History

The S class were the first and only dual-cab locomotives purchased by Westrail. In May 1996 nine were ordered from Clyde Engineering as part of an order that also included 15 1,435 mm (4 ft 8+1⁄2 in) standard gauge Q class locomotives. The order later extended to eleven. They are an evolution of the FreightCorp 82 class. All were assembled at a facility established by Clyde Engineering within Westrail's Forrestfield Depot to fulfill the contract. The frames were built at Clyde's Somerton plant with other components manufactured at Kelso.

The S class locomotives entered service in June 1998 hauling ore and mineral trains in South West Western Australia. All were in service by November 1998

All were included in the sale of Westrail to Aurizon in December 2012, with the class redesignated as the 3300 class. In 2012, all were included in service operated by Aurizon.

In 2008, Rio Tinto ordered two standard gauge JT42Cs of the same design as the S class for the Weipa bauxite railway, numbered R1005 and R1006. They were delivered in 2009. R1005 remains in service today, while R1006 was withdrawn and scrapped following a collision in September 2019.

References

1. "Westrail Loco Contract Signed" Railway Digest July 1996 page 16
2. "Intelligence" Railway Gazette International volume 152 issue 8 August 1996 page 475
3. "Loco Order Extended" Railway Digest April 1997 page 15
4. "Intelligence" Railway Gazette International volume 153 issue 5 May 1997 page 281
5. "Westrail S Class" Railway Digest February 1998 page 35
6. "S Class Update" Railway Digest August 1998 page 36
7. " Westrail S Class" Railway Digest November 1998 page 37
8. S Class (diesel, WA) Railpage
9. Oberg, Leon (2010). Locomotives of Australia 1850s–2010s. Kenthurst: Rosenberg Publishing. pp. 401–403. ISBN 9781921719011.
10. "JT42C Class". mysite.

v t e Classes of locomotives of the Western Australian Government Railways (WAGR) and Westrail
Steam tender (1,067 mm (3 ft 6 in))	A C/Ca E/Es Ec F/Fs G I J L M O/Oa P (1896) P/Pr Pm/Pmr Q R/Ra S T U V W
Steam tank (narrow gauge)	B C (1880) D (1884) D/Ds Dm Dd E F (1892) H I K (1891) K N Q (1895) S (1888) U (1903) Ut
Steam Garratt (narrow gauge)	ASG M/Ms Msa
Diesel-hydraulic (narrow gauge)	B E (ex MRWA) M/MA
Diesel-mechanical (narrow gauge)	Z
Diesel-electric (narrow gauge)	A/AA/AB C D/DA DB F (ex MRWA) G (ex MRWA) N/NA P R RA S T/TA X Y
Diesel-electric (standard gauge)	H J K KA L NB Q
Ballaarat Leschenault Lady List of Western Australian locomotive classes Rail transport in Western Australia Railways in Perth Western Australian Government Railways Westrail Midland Railway of Western Australia

• Aurizon diesel locomotives
• Clyde Engineering locomotives
• Co-Co locomotives
• Diesel locomotives of Western Australia
• Railway locomotives introduced in 1998
• Diesel–electric locomotives of Australia
• 3 ft 6 in gauge locomotives of Australia