Class of Australian 2-6-0+0-6-2 Garratt locomotives
Not to be confused with WAGR M class (1875) or WAGR M class (diesel).
WAGR M/Ms class
M388 at East Perth Locomotive Depot, 1926
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
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)
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
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]
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