| Weight – Loco | 67t |
| Tender | 46t |
| Driving Wheels | 4ft 7ins |
| Boiler Pressure | 175psi but later 180psi |
| Cylinders | Outside – 20in x 26in |
| Tractive Effort | 28,650lbf but later 29,500lbf |
During the 1950s the Victorian Railways (VR) embarked on a £80m programme to rebuild its network which was badly run down following many years of underinvestment. As part of this the railway undertook a massive upgrade of its aging locomotive fleet.
The sixty J class locomotives ordered from Vulcan Foundry at Newton le Willows were designed to cope with the gradients of up to 1 in 30 and be capable of being converted to 4ft 8½in gauge. They were a based on the Victorian Railway built k class but included many improvements on the earlier locomotives.
Initially VR ordered 50 locomotives from Vulcan foundry but subsequently ordered a further 10 after selling off ten of its brand new N class locomotives to the South Australian Railways. By the time the purchase of the J class locomotive had been awarded the VR had already begun to take delivery of class B main line diesel-electric locomotives. The VR unsuccessfully attempted to cancel the order for the class J in favour of an order for branch line diesel engines.
The J class locomotives were introduced to haul both passenger and goods traffic on Victoria’s branch line network where they were allowed to travel up to a speed of 45mph although the restriction was later lifted to 50mph.
In the 1960s the boiler pressure was raised to 180psi and the tractive effort to 29,500lbf. Following recommendations of the 1957 Australian and New Zealand Conference one locomotive was converted to oil burning but this did not prove to be a success and the locomotive was reverted to coal burning. The second 30 locomotives were however built as oil burners.
The coal fired J class locomotives were the regular engine on the 09:00 Melbourne to Yarram passenger service, with other duties being from Lilydale to Warburton and local services from Spencer Street to Werribee. The oil-fired J class engines were pressed into service hauling the final leg of The Gippslander express from Sale to Bairnsdale.
In their later years, J class locomotives also ran the Horsham to Dimboola leg of the morning service from Melbourne, one of the last regular steam-hauled passenger train services in Victoria.
Although J class locomotives produced the same nominal tractive effort as the K or N class, they had a slightly higher adhesive weight (and so a better factor of adhesion) and were permitted to haul heavier loads on gradients.
Within a year of the introduction of the J class, the T class diesel electric locomotive was also introduced. The T class proved to be such a successful design that further orders of that locomotive class were made during the late 1950s and 1960s, and the diesel-electric units gradually displaced the J class from many of duties.
By the late 1960s, the J class was largely relegated to shunting at various country yards, with many losing their cowcatchers and gaining shunter’s steps on sides of the tender. They were superseded in the shunting duties by the introduction of further diesel locomotives resulting in the first class J locomotive being scrapped in November 1967. One (J550) of the 11 members of the class that has been preserved hold the distinction of being the very last steam locomotive in normal revenue service on the Victorian Railways which took place in May 1972.
This locomotive ((J512) was built by Vulcan Foundry at Newton le Willows in 1954 as one of the coal burning engines and entered service in June 1954. It was one of the last members of the class in service when it was used as a shunter at Newport workshop between 1970 and 1972. It was withdrawn from service in May 1973
In 1975 the locomotive was sold for preservation to the Alexandra & District Historical Society and towed to Alexandra. The locomotive remained unrestored on the head shunt of the old station yard in the former station and goods shed buildings.
In 1995 it was moved to the Seymour Rail Heritage Centre for restoration to steam and conversion to standard gauge (4ft 8½in) which was part of the original design concept for the J class locomotives. The re-gauging includes narrowing the frames and adjusting the wheels centres on the axles.
As part of the restoration the type of wheels fitted to J class locomotives were sourced as the locomotive had been fitted in 1969 with driving wheels from a n class locomotive. A boiler from classmate J509 was acquired in order to aid the restoration project.
The locomotive as of mid 2022 was still being restored at the Seymour Railway Heritage Centre workshops.
Ten other class J locomotives built by Vulcan Foundry are preserved.
• 507 Works No 6053
• 515 Works No 6061
• 516 Works No 6062
• 524 Works No 6070
• 536 Works No 6082
• 539 Works No 6085
• 541 Works No 6087
• 549 Works No 6095
• 550 Works No 6146
• 556 Works No 6152
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