# MRWA F class

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Class of Australian diesel-electric locomotives

Midland Railway of Western Australia F class F45 at Picton Yard in March 1986 Type and origin Power type Diesel-electric Builder English Electric, Rocklea Build date 1958 Total produced 7 Specifications Configuration: ​ • AAR A1A-A1A • UIC (A1A)(A1A) Gauge 1,067 mm (3 ft 6 in) Wheel diameter 3 ft 1+1⁄2 in (0.953 m) Minimum curve 330 ft (100.584 m) Wheelbase 34 ft (10.363 m) total, 11 ft 6 in (3.505 m) bogie Length 42 ft (12.802 m) over headstocks Width 8 ft 10+1⁄2 in (2.705 m) Height 13 ft 7 in (4.140 m) Axle load 10.7 long tons (10.9 t; 12.0 short tons) Loco weight 63 long tons (64.0 t; 70.6 short tons) Fuel type Diesel Fuel capacity 500 imp gal (2,300 L) Lubricant cap. 90 imp gal (410 L) Coolant cap. 88 imp gal (400 L) Prime mover English Electric 6SRKT Mk II RPM range 450–850 rpm Engine type Four-stroke diesel, four valves per cylinder Aspiration Turbocharged Generator English Electric 827/4C Traction motors English Electric 525/9A Cylinders 6 Inline Cylinder size 10 in × 12 in (254 mm × 305 mm) MU working 110V, stepless electro-pneumatic throttle Loco brake Air Train brakes Vacuum Performance figures Maximum speed 50 miles per hour (80 km/h) Power output 750 hp (560 kW) gross, 685 hp (510 kW) net Tractive effort 22,400 lbf (99.6 kN) at 9.6 mph (20 km/h) Career Operators Midland Railway of Western Australia Number in class 7 Numbers F40-F46 Delivered May 1958 Preserved F40, F41, F43, F44 Disposition 4 preserved, 3 scrapped

The **F class** were a class of diesel locomotives built by [English Electric](/source/English_Electric), [Rocklea](/source/Rocklea%2C_Queensland) for the [Midland Railway of Western Australia](/source/Midland_Railway_of_Western_Australia) in 1958. They were later taken over by the [Western Australian Government Railways](/source/Western_Australian_Government_Railways).

## History

The F class was based upon the [South Australian Railways 800 class](/source/South_Australian_Railways_800_class). The seven members of the class entered service with the [Midland Railway of Western Australia](/source/Midland_Railway_of_Western_Australia) in 1958, and, together with the rest of the company's assets and operations, were taken over by the [Western Australian Government Railways](/source/Western_Australian_Government_Railways) in 1964.[1][2][3][4]

The first (F42) was withdrawn in November 1984.[5]

[Hotham Valley Railway](/source/Hotham_Valley_Railway) have preserved F40 and F44[6][7] while [Rail Heritage WA](/source/Rail_Heritage_WA) have F43. F41 is also on display at Moora.

## References

1. **[^](#cite_ref-1)** [Diesels replace steam power on Midland Railway, reproduced from *Railway Transportation* August 1959](https://web.archive.org/web/20070502221316/http://www.rawsonplace.esmartdesign.com/notebook/302/notebook.htm) Commissioners Notebook, volume 3 no 2, 8 January 2006)

1. **[^](#cite_ref-2)** Oberg, Leon (2010). *Locomotives of Australia 1850s-2010s*. Kenthurst: Rosenberg Publishing. p. 306. [ISBN](/source/ISBN_(identifier)) [9781921719011](https://en.wikipedia.org/wiki/Special:BookSources/9781921719011).

1. **[^](#cite_ref-3)** [F (MRWA diesel)](http://www.railpage.com.au/locos/f-mrwa-diesel) Railpage

1. **[^](#cite_ref-4)** [Part 3 – Dieselization](http://www.perth.republika.pl/Diesel-.pdf) [Archived](https://web.archive.org/web/20140201234412/http://www.perth.republika.pl/Diesel-.pdf) 1 February 2014 at the [Wayback Machine](/source/Wayback_Machine) Perth Republika

1. **[^](#cite_ref-5)** "Western Australia" *[Railway Digest](/source/Railway_Digest)* March 1985 page 97

1. **[^](#cite_ref-6)** [F40](http://jimbisdee.com/wp-content/uploads/2013/08/West_Aust_Railscene_e-Mag_issue_number_103.pdf) West Australian Railscene e-Mag issue 103 4 October 2010 pages 4-5

1. **[^](#cite_ref-7)** [F44](http://jimbisdee.com/wp-content/uploads/2013/08/West_Aust_Railscene_e-Mag_issue_number_129.pdf) West Australian Railscene e-Mag issue 129 28 March 2011 page 8

## Further reading

- Gunzburg, Adrian (1968). *WAGR Locomotives 1940–1968*. Perth: Australian Railway Historical Society (Western Australian Division). pp. 33, 48. [OCLC](/source/OCLC_(identifier)) [219836193](https://search.worldcat.org/oclc/219836193).

- Gunzburg, Adrian (1989). *The Midland Railway Company Locomotives of Western Australia*. Melbourne: Light Railway Research Society of Australia. pp. 40–44, 49. [ISBN](/source/ISBN_(identifier)) [0909340277](https://en.wikipedia.org/wiki/Special:BookSources/0909340277).

- Milne, Rod (1998). *Westrail's English Electric Experience (The English Electric locomotives of the WAGR)*. Elizabeth, SA: Railmac Publications. [ISBN](/source/ISBN_(identifier)) [0958650098](https://en.wikipedia.org/wiki/Special:BookSources/0958650098).

- ["Diesels Replace All Steam Power on Midland Line"](https://www.facebook.com/photo/?fbid=10160239208953553&set=pcb.2880314922107014). *Railway Transportation*: 32–34. August 1959. Retrieved 23 June 2024.

## External links

Wikimedia Commons has media related to [MRWA F class](https://commons.wikimedia.org/wiki/Category:MRWA_F_class).

v t e Locomotives of the Midland Railway Company of Western Australia Steam Walkaway Fremantle/Geraldton B class Martin engines P class C class D class A class Diesel-Hydraulic E class Diesel-Electric F class G class List of Western Australian locomotive classes Midland Junction railway station Rail transport in Western Australia Western Australian Government Railways

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

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