WAGR M class

Specifications
Specifications
Configuration:;
• Whyte	2-6-0+0-6-2 (Garratt)
• UIC	M: (1′C)(C1′) n4t; Ms: (1′C)(C1′) h4t;
Gauge	3 ft 6 in (1,067 mm)
Loco weight	M: 68 long tons 16 cwt (154,100 lb or 69.9 t); Ms: 69 long tons 16 cwt (156,400 lb or 70.9 t)
Fuel type	Coal
Fuel capacity	4 long tons (4.1 t)
Water cap.	2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:
• Grate area	22.6 sq ft (2.10 m2)
Boiler pressure	M: 175 psi (1.21 MPa); Ms: 160 psi (1.10 MPa);
Heating surface:
• Firebox	107 sq ft (9.9 m2)
• Tubes	M: 1,233 sq ft (114.5 m2); Ms: 960 sq ft (89 m2);
• Total surface	M: 1,340 sq ft (124 m2); Ms: 1,067 sq ft (99.1 m2);
Superheater:;
• Type	M: N/A; Ms: Schmidt;
• Heating area	M: N/A; Ms: 199 sq ft (18.5 m2);
Cylinders	4 (Garratt)
Cylinder size	M: 12.5 in × 20 in (318 mm × 508 mm); Ms: 13.25 in × 20 in (337 mm × 508 mm);

Type and origin
Type and origin
Power type	Steam
Designer	Beyer, Peacock & Co
Builder	Beyer, Peacock & Co
Serial number	5477-5482, 5665-5671
Build date	1911, 1913
Total produced	13

WAGR M/Ms class
WAGR M/Ms class
	M388 at East Perth Locomotive Depot, 1926
Power type
Type and origin
Power type	Steam
Designer	Beyer, Peacock & Co
Builder	Beyer, Peacock & Co
Serial number	5477-5482, 5665-5671
Build date	1911, 1913
Total produced	13
Configuration:;
Specifications
Configuration:;
• Whyte	2-6-0+0-6-2 (Garratt)
• UIC	M: (1′C)(C1′) n4t; Ms: (1′C)(C1′) h4t;
Gauge	3 ft 6 in (1,067 mm)
Loco weight	M: 68 long tons 16 cwt (154,100 lb or 69.9 t); Ms: 69 long tons 16 cwt (156,400 lb or 70.9 t)
Fuel type	Coal
Fuel capacity	4 long tons (4.1 t)
Water cap.	2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:
• Grate area	22.6 sq ft (2.10 m2)
Boiler pressure	M: 175 psi (1.21 MPa); Ms: 160 psi (1.10 MPa);
Heating surface:
• Firebox	107 sq ft (9.9 m2)
• Tubes	M: 1,233 sq ft (114.5 m2); Ms: 960 sq ft (89 m2);
• Total surface	M: 1,340 sq ft (124 m2); Ms: 1,067 sq ft (99.1 m2);
Superheater:;
• Type	M: N/A; Ms: Schmidt;
• Heating area	M: N/A; Ms: 199 sq ft (18.5 m2);
Cylinders	4 (Garratt)
Cylinder size	M: 12.5 in × 20 in (318 mm × 508 mm); Ms: 13.25 in × 20 in (337 mm × 508 mm);
Tractive effort
Performance figures
Tractive effort	M: 22,436 lbf (99.80 kN); Ms: 24,488 lbf (108.93 kN);
Factor of adh.	M: 5.3; Ms: 5;
Operators
Career
Operators	Western Australian Government Railways
Numbers	M388–M393; Ms424–Ms430;
Disposition	all scrapped

The WAGR M class was a class of 2-6-0+0-6-2 Garratt-type articulated steam locomotives operated by the Western Australian Government Railways (WAGR) between 1912 and 1955. A total of 13 were built by Beyer, Peacock & Co, Manchester in two batches.^[1]

History

The first batch of six engines was constructed in 1911. These engines, entered into service with WAGR in 1912, were only the third Garratt design to be produced and represented a significant step in the development of the type. The second batch, which consisted of seven units, was built in 1913/14 and designated as the Ms class due to the use of superheated steam. One of the engines from the first batch was retrofitted with a superheater and given a Ms classification.^[2]^[3]

All of the M/Ms class locomotives were utilized to haul trains on the WAGR's light lines. They were withdrawn from service between 1947 and 1955, and all were scrapped.^[1]

Class lists

M class list

The numbers and periods in service of each member of the M class were as follows:^[1]

M class, built by Beyer, Peacock & Co. in 1911:
Builder's number	Fleet number	In service	Withdrawn	Notes
5477	388	2 March 1912	4 September 1947
5478	389	9 March 1912	19 December 1934	Converted to Ms class
5479	390	16 March 1912	17 April 1950
5480	391	23 March 1912	17 April 1947
5481	392	30 March 1912	4 September 1947
5482	393	6 April 1912	20 November 1951

Ms class list

The numbers and periods in service of each member of the Ms class were:^[1]

Ms class, built by Beyer, Peacock & Co.:
Builder's number	Fleet number	Year built	In service	Withdrawn	Notes
5478	389	1911	12 April 1935	28 September 1950	Converted from M class
5665	424	1913	27 September 1913	4 September 1947	Stowed 25 July 1945
5666	425	1913	4 October 1913	4 September 1947
5667	426	1913	27 September 1913	4 September 1947
5668	427	1913	4 October 1913	4 September 1947
5669	428	1913	4 October 1913	14 February 1952
5670	429	1913	11 October 1913	13 January 1955
5671	430	1913	11 June 1914	29 May 1953	Erected at Midland Railway Workshops, October 1913, for State Saw Mills. In service at Manjimup, November 1913. Transferred to WAGR June 1914 in exchange for G57 & G59.

Namesakes

The M class designation was previously used for the M class locomotives that were withdrawn in 1911. It was reused in the 1970s when the M class diesel locomotives entered service.

References

Notes

^ ^a ^b ^c ^d Gunzburg 1984, p. 92.
^ Gunzburg 1984, pp. 90–92.
^ Turner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. pp. 54, 63. ISBN 086417778X.

Bibliography

Durrant, A E (1981). Garratt Locomotives of the World (rev. and enl. ed.). Newton Abbot, England: David & Charles. ISBN 0-7153-7641-1. OCLC 9326294.
Gunzburg, Adrian (1984). A History of WAGR Steam Locomotives. Perth: Australian Railway Historical Society (Western Australian Division). ISBN 0959969039.

External links

Media related to WAGR M class at Wikimedia Commons

[FOOTNOTEGunzburg198492-1] Gunzburg 1984, p. 92.

[FOOTNOTEGunzburg198490–92-2] Gunzburg 1984, pp. 90–92.

[3] Turner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. pp. 54, 63. ISBN 086417778X.

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