WAGR M class explained

WAGR M/Ms class
Powertype:Steam
Designer:Beyer, Peacock & Co
Builder:Beyer, Peacock & Co
Serialnumber:5477-5482, 5665-5671
Builddate:1911, 1913
Totalproduction:13
Whytetype: (Garratt)
Locoweight:M:
Ms:
Fueltype:Coal
Watercap:2000impgal
Firearea:22.6square feet
Fireboxarea:107square feet
Cylindercount:4 (Garratt)
Operator:Western Australian Government Railways
Disposition:all scrapped

The WAGR M class was a class of 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.

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.[1]

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 They were withdrawn from service between 1947 and 1955, and all were scrapped.

Class lists

M class list

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

M class, built by Beyer, Peacock & Co. in 1911:!Builder's
number!Fleet
number!In service!Withdrawn!Notes
5477388
5478389Converted to Ms class
5479390
5480391
5481392
5482393

Ms class list

The numbers and periods in service of each member of the Ms class were:

Ms class, built by Beyer, Peacock & Co.:!Builder's
number!Fleet
number!Year built!In service!Withdrawn!Notes
54783891911Converted from M class
56654241913Stowed 25 July 1945
56664251913
56674261913
56684271913
56694281913
56704291913
56714301913Erected 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The M class designation was previously used for the M class locomotives that were withdrawn in 1911.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.

See also

References

Bibliography

Notes and References

  1. Book: Turner, Jim. Australian Steam Locomotives 1896-1958. 1997. Kangaroo Press. Kenthurst. 086417778X. 54, 63.