South Australian Railways Y class
|South Australian Railways Y / Yx class|
Y97 at Jamestown in October 1967
The Y class were numerically the largest class of steam locomotive operated by the South Australian Railways (SAR) with 129 built between 1885 and 1898. Beyer, Peacock & Co, Manchester built 50, James Martin & Co of Gawler 77 and the Islington Railway Workshops two. They operated across the SAR's narrow gauge network. Between 1904 and 1924, 48 were fitted with new Belpaire boilers and reclassified as the Yx class. 
They were part of what became almost an Australian 3 ft 6 in (1,067 mm) standard, as locomotives of similar design served in large numbers as the Silverton Tramway Y class, Tasmanian Government Railways C class and Western Australian Government Railways G class, and also in Queensland and on the Emu Bay Railway and North Australia Railway
Some were sold for further service to railway construction companies while others saw further service on the timber railway lines of Western Australia. During World War II, 18 were sold to the Commonwealth Railways for use on the North Australia Railway as the Nfb class. Seven of these were sold in 1948 to the Tasmanian Government Railways, but only four entered service as F1-F4.
- Y71 at the Western Australian Rail Transport Museum
- Yx86 at the Western Australian Rail Transport Museum
- Y82 in Peterborough
- Y97 at the National Railway Museum, Port Adelaide
- Y109 at the Manjimup Timber Museum, Western Australia
- Yx135 (NFB88) in Katherine
- Yx141 by the Pichi Richi Railway. Steam trials were carried out in 2017, with its first revenue run in 2018 from Quorn
- Yx176 at the Yarloop Steam Workshops, Western Australia
- Turner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. p. 9. ISBN 086417778X.
- Oberg, Leon (2010). Locomotives of Australia 1850s-2010. Dural: Rosenberg Publishing. pp. 65/66. ISBN 9781921719011.
- "Y97". National Railway Museum. Retrieved 16 April 2011.
- "Steam Locomotives of the Tasmanian Government Railways and its Constituents" Australian Railway History issue 917 March 2014 page 14
- Y71 Australian Steam
- Yx86 Australian Steam
- Y97 Australian Steam
- Y109 Australian Steam
- NFB88 Australian Steam
- Yx141 Australian Steam
- Yx176 Australian Steam
Media related to South Australian Railways Y class locomotives at Wikimedia Commons