Monday, April 16, 2012

Victorian Railways Aa class 4-4-0

 
One of VR's 20 class AA express passenger steam locos is seen at Ballarat in 1925.   The class entered service in 1900 and lasted until 1932.

Specifications
Builder  Phoenix Foundry, Ballarat
Build date  1900–1903
Configuration  4-4-0
Gauge  5 ft 3 in (1,600 mm)
Driver diameter  6 ft 1 in (1.854 m)
Weight on drivers  32 long tons (33 tonnes)
Tender weight  41.2 long tons (41.9 t)
Locomotive & tender
combined weight  91.1 long tons (92.6 tonnes)
Boiler pressure  200 psi (1.4 MPa)
Firegrate area  23 sq ft (2.1 m2)
Heating surface:
Total  1,439 sq ft (133.7 sq metres)
Cylinders  Two, inside: 19 in (483 mm) × 26 in (660 mm)
Valve gear  Stephenson
Tractive effort  20,850 lbf (92.75 kN) at 80% WP MEP

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