Class of diesel locomotives used in Australia
| V/Line A class |
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 V/Line MK1 Livery A66 at Bendigo Station - July 2022 |
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| Specifications |
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Configuration:
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| • AAR | C-C |
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| • UIC | Co-Co |
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| Gauge | 1,600 mm (5 ft 3 in) |
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| Wheel diameter | 40 in (100 cm) |
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| Length | 60 ft 10 in (18.54 m) |
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| Width | 9 ft 9 in (2.98 m) |
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| Height | 14 ft 0 in (4.27 m) |
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| Loco weight | 120 long tons (120 t) |
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| Fuel type | Diesel |
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| Fuel capacity | 1,000 imp gal (4,540 L) |
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| Lubricant cap. | 137 imp gal (625 L) |
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| Coolant cap. | 154 imp gal (698 L) |
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| Prime mover | EMD 12-645E3B |
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| RPM range | 200-950 rpm |
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| • RPM low idle | 200 |
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| • RPM idle | 200 |
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| Engine type | Two-stroke diesel engine |
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| Aspiration | Turbocharged |
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| Generator | EMD AR10-A4-D18
(Replaced with CA5) |
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| Traction motors | EMD D57
(Replaced with D78) |
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| Head end power | 74 VDC, 10 kW |
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| Cylinders | 12 |
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| Transmission | Diesel-electric |
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| Train heating | Head-end power |
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| Performance figures |
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| Maximum speed | 83 mph (133 km/h) |
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| Power output | 2,476 hp (1,846 kW) |
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| Tractive effort | Starting 66,094 lbf (294 kN)
Continuous 47,659 lbf (212 kN) |
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|
| Career |
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| Operators | V/Line |
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| Class | V/Line A Class |
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| Number in class | 11 |
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| Numbers | A60–A85 |
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| Locale | Victoria, Australia |
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| First run | May 1984 |
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| Retired | May 2014 |
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| Preserved | 2 |
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| Current owner | Pacific National
V/Line |
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| Disposition | 2 preserved, 2 in service, 2 stored, 6 scrapped |
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The A class are a class of diesel locomotives rebuilt from Victorian Railways B class locomotives by Clyde Engineering, Rosewater in South Australia for V/Line in 1984–1985.
