V/Line A class
V/Line MK1 Livery A66 at Bendigo Station - July 2022
Type and origin Power type Diesel-electric Builder Clyde Engineering, Rosewater Model EMD AAT22C-2R Build date 1984–1985 Total produced 11
Specifications Configuration: ​  • UIC Co-Co Gauge 1,600 mm (5 ft 3 in) Wheel diameter 40 in (100 cm) Length 60 ft 10 in (18.54 m) Width 9 ft 9 in (2.98 m) Height 14 ft 0 in (4.27 m) Loco weight 120 long tons (120 t) Fuel type Diesel Fuel capacity 1,000 imp gal (4,540 L) Lubricant cap. 137 imp gal (625 L) Coolant cap. 154 imp gal (698 L) Prime mover EMD 12-645E3B Aspiration Turbocharged Generator EMD AR10-A4-D18 (Replaced with CA5) Traction motors EMD D57 (Replaced with D78) Head end power 74 VDC, 10 kW Cylinders 12
Performance figures Maximum speed 83 mph (133 km/h) Power output 2,476 hp (1,846 kW) Tractive effort Starting 66,094 lbf (294 kN) Continuous 47,659 lbf (212 kN)
Career Operators V/Line Number in class 11 Numbers A60–A85 First run May 1984 Retired May 2014 Preserved 2 Current owner Pacific National V/Line Disposition 2 preserved, 1 in service, 2 stored, 6 scrapped

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.

History

The class were rebuilt from B class locomotives originally constructed in the 1950s, as part of the New Deal reforms of passenger rail operations in Victoria. The rebuild contract was let in January 1983 to Clyde Engineering, Rosewater with the first locomotive entering service in May 1984, but the project was abandoned in mid 1985 after rising costs due to structural fatigue, with the 11th rebuild delivered in August 1985.^[1] It was decided to instead build more of the N class locomotives, mechanically similar to the A class. The major difference was the addition of head end power generators, as it was believed this was a more efficient way of supplying power for air-conditioning and lighting than power vans or individual generator sets under carriages.^[1]

Four locomotives were named after Australian rules football players in September 1984,^[2] while A60 was named after former railway commissioner Harold Clapp. In July 1986, A85 was regeared for 160 km/h (99 mph) operation, and tested between Glenorchy and Lubeck, to test an H type carriage set fitted with high speed bogies,^[3][4] but was returned to the standard 133 km/h (83 mph) gearing soon after.^[2] In preparation for the privatisation of V/Line, four were allocated to passenger services and seven to freight services.

When the engines were initially converted from B class units they were intended for light, high speed passenger traffic, but in Freight Australia service this had limited value. The engine frames could not be easily reinforced, but by 2002 the D57 traction motors were swapped for D77, which raised the current axle from 825A to 1050A. To better make use of the increased power the gear ratios in each unit were changed from 59:18 to 61:16, improving adhesion and overall providing an increase in tractive effort of 35%. The lower-power traction motors were cascaded to the Y Class fleet.^[5]

The V/Line units were not upgraded in this way, and continued to operate in regular service supplementing the N Class locomotives on mainline services. Another fixed roster was to Stony Point, as the MTH carriages allocated to that service were fitted with on-board head-end-power generators. The A class locomotives were supposed to run their last mainline passenger services in 2013, with A60 operating what was supposed to be the final service, the 16:15 Southern Cross to Bacchus Marsh on 24 April 2013.^[6][7] However, due to a shortage of N class locomotives V/Line briefly reactivated A70 in 2014, with all four locomotives in the V/Line passenger fleet having since been withdrawn. Pacific National withdrew its last examples in May 2014.^[8]

In August 2015 three of the four A class locomotives were put into long-term storage, with V/Line continuing to operate A66 in revenue service, where it used to operate on the interurban service to Bacchus Marsh on a regular basis operating in peak times. By August 2018 however, timetable alterations had seen the loco no longer required on the Bacchus Marsh services and A66 was subsequently sent to Bendigo Roundhouse and later Melbourne where it resides currently in dry storage as an emergency locomotive.^[9]

During the time period of 7 and 18 January 2019, Pacific National units A73, A77, A81 and A85 were scrapped at South Dynon broad gauge turntable.^[10] In May 2019, Pacific National scrapped A71 and A79 at Melbourne Freight Terminal to further clear out redundant assets at Dynon Workshops. Currently, A78 is the last remaining ex-Freight Australia / Pacific National A class locomotive remaining which has been stored in North Bendigo Workshops with an uncertain future.^[9]

Two of the three V/Line A class locomotives that were in long-term storage at South Dynon Locomotive Depot have since been allocated to heritage preservation, they are locomotives A60 and A62 due to their significance and contributions to the Victorian Railways which marked many historical milestones. A60 (formerly B60) being the first the Victorian Railways mainline diesel-electric locomotive, which also has been named after the Victorian Railway commissioner Sir Harold Clapp, and A62 (formerly B62) being the first diesel-electric locomotive to hit a million miles within the Victorian Railway system. It too has been named in honor of the railway employees of the Victorian Railways. A60 has been allocated to Seymour Railway Heritage Centre while A62 has been allocated to 707 Operations.The respective transfers of the two locomotives took place on 6 June 2020. The third and last of these locos, A70 was transferred from South Dynon to Newport Workshops on 24 June 2022.

Livery

The class were delivered in the V/Line orange and tangerine scheme. In February 1988, A66 which was painted in a green and gold livery to celebrate the Australian Bicentenary,^[11] later appearing in a second special livery to advertise the Melbourne bid for the 1996 Olympic Games.^[2] For most of the 2000s and 2010s, the class appeared in either the 1995 red and blue or 2008 red and yellow V/Line Passenger liveries, or the green and yellow Freight Australia livery with Pacific National logos.^[9]

In 2022, A66 was repainted into the as-built V/Line orange and grey livery.

Status table