MRWA B class

Midland Railway of Western Australia
B class
B6 with crew at Watheroo, ca 1910
Type and origin
Power typeSteam
BuilderHawthorn Leslie,
Tyneside, England
Serial number2213–2221
Specifications
Configuration:
​
 • Whyte4-4-0
 • UIC2'B
Gauge3 ft 6 in (1,067 mm)
Driver dia.4 ft 4 in (1,321 mm)
Length43 ft 3 in (13.18 m) (incl tender)
Loco weight49.75 long tons (50.55 t; 55.72 short tons) (incl tender)
Firebox:​
 • Grate area14 sq ft (1.3 m2)
Boiler pressure160 psi (1,100 kPa)
Cylinder size15 in × 20 in (381 mm × 508 mm)
Performance figures
Power output660 hp (490 kW)
Tractive effort11,076 lbf (49.27 kN)
Career
Number in class9
NumbersB2 - B10
First run1891

The MRWA B class was a class of 4-4-0 steam locomotives built by Hawthorn Leslie in Tyneside, England, for the Midland Railway of Western Australia (MRWA). The class's wheel arrangement was 4-4-0.

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