Victorian Railways hopper wagons

As a general rule, a hopper wagon involves an open frame with sloped sheets, giving a wider area at the top and a smaller area at the bottom. The type of intended traffic usually guides both the slopes and whether or not the wagon has a roof to keep the freight dry (for example, with cement or grain wagons). Later designs experimented with pressurised drums to store various powdered goods, pumped into and out of the wagons using external high-pressure air supplies. The traffic will also dictate the design of the unloading mechanism for the wagon, as usually found between the axles. ==1870 and 1915 fixed-wheel, open-top hopper wagons==

Original fleet The first open-top hopper wagons were introduced around 1870. Forty wagons were built with 10-ton capacity, and used to transport imported coal from the Williamstown, Geelong and Port Melbourne to locomotive depots in the Melbourne area. The first forty were all marked off register in 1910. ON ballast wagons From 1959, 75 of the 15-ton fleet of O wagons were randomly selected for conversion for ballast train use, and reclassed as ON. Between 1962 and 1968 some of the wagons were returned to the coal fleet, though they retained their ballast-wagon modifications. The remaining ON wagons were used for limestone traffic between Nowa Nowa and Maryvale. OC sand wagons From the early 1960s, a group of roughly 100 wagons, pulled from both the O and ON sub-groups, were fitted with roofs and sprayed internally with an anti-stick compound, for transport of sand from Koala siding near Lang Lang, to a glass factory in Spotswood. Original numbers were retained. OJ cement wagon In 1966, ON229 was converted to the new class OJ, as an experimental cement powder wagon. The trials were deemed unsuccessful, and within a year it had been transferred back to Newport Workshops for conversion to OC229. ==1901 NN → VHWA/VZMA)==

As bogie vehicles became more popular, VR decided to expand the concept into freight transport. The ideal choice for experimentation was a little-used, but very important class of wagon, used for ballasting the track but otherwise having little to no use. Ex-NN fleet Around 1920, a concept was floated to use hoppers from the NN ballast fleet of wagons to build a higher-capacity type of O wagon. Five hoppers were recycled in this way, becoming the second O1-O5, before the project was cancelled. ==1910 QN → VHNA/VZNA==

From 1910, another type of ballast wagon was constructed. Known as QN from the start and given numbers 1 to 121, the class construction continued until 1926. The wagons were initially dual-purpose, with a small hopper embedded in the centre of the floor, but with raised sides and ends and steel plates across the floor for carriage of rails and other maintenance materials. Rail carrying probably only continued until the 1950s, with the introduction of KR rail-carrying trucks – four-wheel underframes fitted so that rails could be welded together into longer sections and placed across a number of wagons, flexing as the train ran around curves. ==1925 J series (open hopper) and 1951 Box-type series==

J series (ballast, briquettes, coal, grain) In 1925, the South Australian Railways was part-way through an order for a large number of coal wagons. The Victorian Railways decided to make use of the situation and chose to experiment with the wagon style, by tacking 12 40-ton capacity wagons on to the SAR order. The 12 wagons were imported as kits from the American Car and Foundry Co., delivered to Newport Workshops and assembled there then released to traffic over a seventeen-day period late in 1925. The order from ACF Co. included two each of the 40-ton capacity E open, V louvre and S flat wagons, all of which the SAR purchased larger quantities. The VR intended to use these wagons for slack coal traffic between the State Coal Mine (Wonthaggi) and Newport Power Station. However they were found to be unsuitable for this, probably because of the rather shallow angles of the hoppers which resulted in discharge issues. Because the wagons were failures in their intended traffic, some other use had to be found for them. In the 1920s they were used for ballast, then they spent a short time in briquette traffic in the late 1930s, then coal traffic in the 1940s again between Wonthaggi and Maryvale (reversing at Dandenong). They returned to ballast traffic by the 1950s. Another experiment was conducted in 1957 with J 8 being given a temporary roof as a trial for grain transport, but it is reasonable to assume that all of these experiments were failures; in 1959 J 8 became the first of its class to be converted to CJ format in 1959, followed closely by 12, 11, 10, 6, 7, 9, 1, 4, 5, 3 and 2 over the following two years. Respectively, these conversions were to CJ 51–54 and 80–87. CJ, CJF, VHCA (cement), VHJA (Gypsum), VHLA (lime) & VHCF (weighbridge test) From 1950, it was found that more capacity was required for cement powder transport from Fyansford to Bandiana for the Kiewa Hydroelectric scheme. To answer the call, a class of wagons was constructed and it became known as the CJ class. Deliveries occurred at a rate of roughly 1–2 wagons per month until CJ 20 was delivered in mid-July 1952. Further wagons were delivered in two batches, with 21–30 arriving 1954–1955, and 31–97 arriving 1957–1961. The wagons were effectively a flat underframe, fitted with a large covered box. The box contained two pairs of sloped sheets so that the cement powder was carried in two separate compartments; each of these fed a single hatch adjacent to the bogies. This gave capacity for just over of cement powder, equalling roughly loaded. While the class members were mostly identical, there were a few outliers. During the last batch of deliveries, it was becoming clear that the wagons would not arrive in time to meet demand, so J (1925) hoppers were rebuilt into the CJ design; as such, wagons CJ 51–54 and 80–87 were converted from the abovementioned J hoppers. In this form the converted wagons had a rather odd appearance, as though someone had dropped the CJ-type wagon body into the hopper unit of the J wagons. Eventually the wagons had their roofs raised; CJ 6 and 14 were the trials for this, but it is not known by how much the capacity or weight of the wagons was increased. From 1966 to 1968, the capacity for CJ wagons was raised and the vehicles were recoded to CJF. In order to achieve this, wagons 6 and 14 had their roofs raised in a Mansard-style as a trial; they were the only two wagons to receive this treatment, which raised their capacity to . The rest of the class had a different style of roof fitted, with their capacity being raised to . The modified wagons 6 and 14 had a tare weight of around , with the capacity during the conversions raised from . The modifications to the remainder of the regular CJ fleet allowed a capacity of either depending on the quality of bogie, while the wagons previously converted from J hoppers were restricted to because of their tare weight. However, shortly after the class relettering had been completed it was found that the brakes fitted to the bogies were not powerful enough (against a loaded CJF) to qualify for the 'F' classification, thus from 1968 to 1972 most of the wagons were returned to their previous CJ codes. At this time CJ 16 and 46 accidentally swapped numbers. VHJA Gypsum traffic In 1984, the ten remaining VHCA wagons ex J series hoppers (51, 53, 54, 81, 82 and 84–87) were removed from that fleet and reclassed to VHJA 1–10 for gypsum traffic. The covered roof was removed and replaced with a vertically extended box structure, hiding extended and steeper sloped sheets – like the VHLA, this was to assist in quick unloading, but in this case the extension was provided so the wagons could be loaded to the same total weight as previously. In the late 1980s, some of these wagons were seen in briquette traffic, but by 1993 there was clearly justification for the class as a further 15 VHCA (normal type) wagons were converted, bringing the new total to 25. Wagons 11 to 16 were converted from VHCA 35, 46, 42, 22, 15 and 24; VHJA 19 came from VHCA 13, and VHJA 25 came from VHCA 95. It is not clear which VHCA wagons were used for VHJA 17, 18 and 20–24, though candidates would have been VHCA 17, 18, 36, 41, 57, 62, 65, 71 and/or 79. The remaining wagons, VHCA28, 48, 61, 63, 64, 66, 67, are known to have been scrapped in the mid-1980s. Since that time the wagons have seen little use, many being stored at Tottenham Yard. VHCA 55 was last seen at Tottenham, still in the abovementioned scheme, in 2004. Withdrawal In June 1997, the Fyansford cement plant was purchased, and the new owners elected to use their own fleet of trucks instead of the VHCA fleet. As a result, the wagons were no longer needed. 11 were stored at Tottenham Yard, and another 49 on the south leg of the triangle at North Shore Yard. In 1998, the North Shore wagons were relocated to a siding parallel to the mainline. On Friday 26 June the same year, G525 collected the wagons from both North Shore (along with 15 VHSF wagons) and Tottenham Yard, and placed them on the disused Outside Goods Lines in Melbourne Yard; that alignment is now used partially for the Regional Rail Link lines between the 1961 North Melbourne Flyover, and Spion Kop Junction. At the end of March 2001 the last of the gypsum VHJA wagons were removed from the Alauda siding at Tottenham Yard for scrapping, as VHJX wagons were being used instead for the Cowangie gypsum traffic. VHCF weighbridge test wagons In late 2001 ten wagons were recycled as VHCF wagons for weighbridge testing. By May 2003 they had been placed in storage at Tottenham Yard. Long-term storage As at Thursday 8 May 2003, the northern track contained wagons, listed from the Spencer St end, 16V, 76A, 32B, 78S, 7W, 88D and 55V then 50W, 75Y, 77J, 72K, 74F, 33K, 26G, 8X, 93M, 94V, 73T, 97C, 31P, 69T, 27P, 45N, 19C, 6N and 89M (26 wagons). The southern track had 1Y, 37A, 90X, 70P, 68K, 49D and 47X, then 34T, 15M, 11W, 21H, 4S, 38J, 30G, 59L, 14D, 56H, 5E, 20W, 60H, 40Y and 92D (22 wagons). The gaps were for the staff pathway to access the North Melbourne maintenance centre. All wagons were mounted on either VXB or VXC bogies. As at Wednesday 28 May 2003, Tottenham Yard contained, from the Footscray end – on the north side of the 2nd classification tracks: VHCF2U (80.2 t), VHCF12F (80.3 t), VHCF44B (81.7 t), VHCF3G (65.6 t), VHCF10K (64 t), VHCF91Y (65.6 t), VHCF39P (36.2 t), VHCF43P (23.2 t), VHCF29H (36.2 t), VHCF96N (21.8 t), for 10 wagons. Two additional wagons had recently been moved from the Outside Goods Lines to Tottenham Yard, and placed in a siding on the north side of the east yard; VHCA23C at the Footscray end coupled to VHCA25U at the Sunshine end. ==1949 Two-Drum Air Discharge Hoppers==

Pulverised brown coal After dealing with coal shortages during World War II and the immediate post-war era, the Victorian Railways reactivated earlier experiments with Precipitated Brown Coal. Locomotives X32 and R707 were modified to take the fuel, which was prepared at special plants and railed to depots as required in a small fleet of seven CK-class wagons. These vehicles were based on a standard four-wheel underframe, with two pressurised drums fitted for air discharge directly into the engine tenders. The first two were built in 1949, and a further five, CK3-CK7, entered service in 1952. At the time it was thought that a further fifteen X Class would be built or converted to run with PBC, justifying the extra expense, but the early diesel locomotives were more economic to operate on grounds of higher utilisation. The hoppers typically operated from Fyansford, near Geelong, to sites around Melbourne as required. For example, wagons were unloaded at Victoria Park for construction of the Eastern Freeway, and construction of the Melbourne Underground Rail Loop saw the wagons unloaded in the vicinity of Jolimont Junction. Flour In 1961–62, as the last of the new fleet of dedicated cement hoppers were being delivered, the original batch of ex-pulverised brown coal hoppers were recycled for new powdered flour traffic. The wagons formerly CK1-7 then X1-7 became FX1-7; in 1963 that changed to FJ1-7 to clear the "X" code for bogie-exchange-capable vehicles. Three further vehicles were converted from the J series cement fleet in 1964–65, with J45, 47 and 46 becoming FJ 8–10. In 1967, this was followed with the two notched-drum wagons, J41 and 42, becoming FJ11 and 12. The vehicles were known to be loaded at Albury and unloaded at Westall, though FJ9 was painted advertising flour from the Jacketts mill in Swan Hill The vast majority of published photos are of wagons at Westall. In 1971–72, the fixed-wheel fleet was rendered obsolete, with the introduction of four-drum bogie flour wagons, and converted (back) to the J series for cement use. FJ 8 and 9 were retained until the late 1980s, and were noted as stored in 1992. Models Austrains has released models of cement and flour hoppers in sets of three, representing the 28–77 batch of the former type and numbers 1, 6, 7, 8, 10, 11 and possibly others of the flour type. No models have been commercially released of the precipitated brown coal hoppers. ==1959 & 1979 former open wagons==

Prototype G1 Until the 1960s, unbagged grain traffic was handled with the GY fleet of open wagons, which could be filled from overhead chutes but needed to be shovelled out by hand. To accelerate the process a hopper design was trialled, with the prototype wagon being constructed in 1959. The new hopper wagon was specifically designed for to meet the requirements of the Grain Elevator Board for bulk wheat haulage from around the state to North Geelong terminal and silos, and it was constructed using a welded hopper body with flat ends and a pitched roof, fitted with four weather-proofing hatches, accessible by ladders at either end. The wagon had a carrying capacity of , and a tare weight of The primary issue was the unloading rate; it was found that the grain flowing from under the wagon overloaded standard conveyor belt systems when they transferred the grain to silos (such as Thomas' Mill just north of Newport) or ships at piers. The wagon was scrapped in 1971. GH wagons In the late 1970s, funding for the bogie grain wagon construction program was drying up, while demand for rolling stock with faster loading and unloading times was increasing. Additionally the Victorian Railways had a long-held tradition of restoring and upgrading existing rolling stock, rather than purchasing new vehicles, because that allowed funding to be sourced from maintenance budgets rather than new allocations from the Government (regardless of whether that would provide a better long-term outcome). That attitude persisted throughout the early VicRail years. In line with that tradition, from 1979 roughly one in eight of the GY open wagons were selected for conversion to a smaller version of the bogie hopper wagons. GY2207 was modified in March 1979; the sides and ends were removed and a large hole cut into the floor between the axles, to make way for a new hopper unit on the existing underframe with under-floor hatches for unloading. The top of the wagon was sealed, with a trapezoidal roof and walkways fitted for staff who had to open hatches for overhead grain loading. The class eventually numbered 810 units, drawn from all types of steel four-wheel open wagons. Like G1 before them, the original GH fleet were fitted with four hatches – two per side, between the axles and either side of the brake gear along the centre of the underframe. This made access to the brakes unwieldy, and the four hatches released grain too quickly for the conveyor belt systems. To resolve both issues later wagons were built with only two hatches, centred one either side which halved the grain delivery rate and made access to the brake rigging much easier. GH150 and GH151 were constructed with alternative braking arrangements, by cutting a small enclave in underneath one end of the hopper and placing the brake equipment there. Some further wagons were modified, but many (including some then under construction) only had the cut-out section constructed without shifting the brake equipment. Parallel to the hopper and brake gear modifications a new arrangement of roof hatches was trialled. The early wagons were fitted with a pair of individual flip-open lids, while later wagons were fitted with a single, much longer rooftop hatch mounted on six hinges. The addition of the roof section permitted a higher payload of grain, but between that and the weight of the roof, hopper sheets and hatch mechanisms, a GH wagon was significantly heavier than a standard tarped GY wagon. This led to problems with brakes, as the original braking systems for the lighter vehicles were retained. Further, wagons developed cracks in the frames not long after entering service, in the corners above the axlebox spring supports. In 1980, two wagons were modified for higher speed operation trials. GH155 and GH336 were fitted with new Gloucester Suspension Unit axleboxes, and trialled at speeds as high as 115 km/h. Given that no further wagons were fitted, it seems likely that the tests showed little to no benefit from faster running. Externally the wagon was largely identical to the grain wagons, but painted brown, coded FH1 and marked for superphosphate traffic. In May of the following year a further five wagons were converted to match. They were used for traffic between Corio and Wodonga until the early 1990s. ==1963 Drum series (pneumatic discharge)==

Around the same time as the CJ series were being built with gravity-discharge systems, a separate series of longer-bodied wagons were constructed with vertical drums and pneumatic discharge; these were originally intended for cement traffic, but later on similar wagons were used for flour, lime and sand traffic. The wagons involved were the JX (three drums) and FX (four drums), later becoming the VPAX/BX/CX and VPFX respectively. Later conversions, all from the VPFX class, created the VPLX and VZGX varieties for carrying lime and specially dried locomotive sand respectively. JX & VPAX/BX/CX The JX wagons were constructed from 1963 to 1977, with wagon numbers 1 to 108 being built in two batches. The wagons were all recoded to VPCX in 1979, and a further batch in 1981–82 took the class to 158 total. The three batches were later separated by the air pressure required for discharge, with batch 59–108 becoming VPAX and 109–158 becoming VPBX. Traffic was from Fyansford cement plant (near Geelong) to Somerton in Melbourne's north, where Blue Circle had built a holding depot. From here the cement was discharged, then distributed by road. It was also expected that cement could be purchased overseas and taken over water to Sydney, then railed to the same Somerton depot. The later group of wagons was built in anticipation of the construction of the new Parliament House in Canberra. This was achieved with block trains running regularly from Somerton to Canberra on the standard gauge line. FX, VPFX, VPLX & VZGX In 1966, around the same time as the first JX wagons were being constructed, a handful of components were used to build the first two FX wagons for flour transport. These were successful and were joined by FX 3 and 4 by the end of the year. In 1970–71 the class was increased to 17, though these were built to a slightly different design, with only one discharge pipe instead of three. By 1978 the earlier wagons had been modified to match the later design. In 1979 the code was altered to VPFX. The main area of traffic was from the Bunge Flour Mills at Albury to the discharge point at Williamstown Pier. Another was from the Bridgewater Flour mill to Melbourne. In 1989, a need was generated for lime transport, to be added to cement batches. To achieve this, VPFX wagons 2, 3, 6 and 11 were converted to VPLX in 1989–1990, and joined by VPLX 14 in 1993. Finally, in 1990 wagons 1, 4 and 17 were converted to carry specially dried sand for locomotive transport, and recoded to VZGX. Unlike the majority of Victorian Railways rolling stock, the flour wagons found themselves painted silver with ◅--VR--▻ symbols, "Bunge" and "Bulk Flour" text in black originally, later trading the silver for white. They were also often covered with advertising for various flour companies such as "Bunge", "Water Wheel" or "KMM Pty., Ltd. O-So-Lite". All seventeen former-FX wagons were included in the sale from V/Line Freight to Freight Victoria in 1999, as VZGX 1, 4 and 17, VLPX 2, 3, 6, 11 and 14, and VPFX 5, 7, 8, 9, 10, 12, 13, 15 and 16. At the time the three VZGX wagons were marked as having zero asset value. VPFX10 was painted green by 2000. Of the three sand wagons, VZGX1Q remained in Victorian Railways' silver, VZGX4U was white with V/LINE logos, and VZGX17J was painted in Freight Australia green. In 2010 both 1 and 17 were stabled in North Geelong yard, and 4 was at Tottenham yard. Wagons 5, 6, 7 and 11 were scrapped in 2010, as part of a project by Pacific National to clear redundant rolling stock from the North Melbourne Arrivals Yard and Tottenham Yard areas. Other wagons 8, 9, 13 and 15 were photographed at North Geelong in 2007/ All three classes were removed from V/Line's list of rolling stock operated by Pacific National in 2024. ==1966 Grain series==

GJX/F & VHGF/X/Y (grain) From the late 1960s, it was finally being realised that, in particular, manual loading and unloading of GY four-wheeled wagons was getting too expensive. In response to the issue, development of a different, extended type of hopper wagon took place, finally resulting in the GJX and, later, the GJF wagons (later recoded to VHGX/Y/F). The wagons were nearly twice as efficient as their four-wheeled cousins when comparing wagon weight to load. The initial order consisted of 100 aluminium and 100 steel-bodied wagons, GJX 1–100 and 101–200 respectively; the code indicated Grain, Hopper and Gauge Convertible respectively. The wagons were delivered, after initial testing, at a rate of around one or two per week, with deliveries lasting from 21 February 1966 until 11 September 1969. The wagons, with their semi-automatic unloading systems, were used for transport of grain from major terminals (such as Marmalake and Dunolly) to the seaports at Geelong and Portland; the majority of the four-wheeled wagons were retained for use from the hundreds of country silos to the abovementioned grain terminals. This was done to ensure that the newest wagons earned their keep as quickly as possible, in addition to the fact that some of the older branch lines did not have the capability to carry wagons as heavy as a fully loaded GJX, at compared to a GY's maximum payload. It was quickly found that other states used the gauge conversion capability of the wagons to their advantage, and quite often grain wagons of this type would vanish beyond the border, only reappearing when in need of repair. In response to this issue, nearly all the wagons were recoded from GJX to GJF in 1972, indicating that they were no longer suitable for gauge conversion but still able to travel at up to . The exception was twenty wagons; at first these were selected at random but this was quickly changed to have GJX 1–20 and GJF covering the rest of the class. One of the easiest ways to tell is whether the wagon had a circle or square next to its number; if a square then the wagon would be fitted with load-compensating brake equipment, whereas a circle would mean that as well as grade control equipment, the standard for gauge-convertible rollingstock. From 1972, the fleet was further expanded, with wagons 201–350 being constructed brand-new as GJFs, and with steel bodies roughly matching wagons 101–200. In 1979, the GJX wagons became VHGX, and the GJF wagons became VHGY (later VHGF). At this time further wagons were constructed, again to the steel design. The wagons were outshopped as VHGY, numbers from 351 to 380 in 1979, then 381–450 in 1984–85 and finally 451–637 (at least) from 1988. It is not known whether or not 637 was the last number, or when it was released to service. However, it can be assumed that these additions to the fleet were intended to replace the large numbers of four-wheeled wagons as quickly as finances became available. VHHF/X/Y (grain) & VHEY/F (briquettes) The wagons numbered 381–637 are a curiosity, because from 1982 to 1984 an improved design of wagon was released to service, known as the VHHY. These wagons were about longer and had an extra capacity over their predecessors, being able to carry each. The first three, 401, 412 and 414, were released to traffic in July 1982, but within a month they had been renumbered to 801, 812 and 814 respectively. By late 1984 the class had expanded to cover numbers 801–915. At the same time as the VHHY class was being constructed, 35 additional wagons were constructed in the 701–735 range as VHEY for briquette transport; these were a similar design but open-topped, and these were the first G-series wagons in the traditional Victorian Railways Wagon Red (albeit well after the scheme's namesake had been abolished). In 1985, wagons 801–812 inclusive were converted to briquette traffic as the VHEY class as numbers 736–747, but the conversions were not done in any particular order so numbers are mixed (i.e. 801 may not have become 736; records are not easily available). The modifications were limited to cutting off the roofs of the wagons and replacing the sliding-door hatches underneath the wagons with a single-door "clamshell" type. Otherwise, from 1988 thirty ex-VHHY wagons became VHHX, while the remaining 73 wagons were relettered to VHHF. Following this the fleet was fairly stable up until the conversions in 1995/96 from Melbourne to Adelaide; as part of this project the by-then grain-only line from Dunolly to Portland was converted to standard gauge, necessitating a conversion of some of the VHGF wagons to VHGX. These numbers appear to have been selected at random, with no apparent pattern. VHRF/X (rice) Introduction of the VHHY class wagons allowed cascading of the older wagons for then-new rice traffic, developing in the north-eastern areas of the state; these wagons were coded VHRF/X. Records are hard to find but it appears a fairly random assortment of wagons were converted, totalling at least 23 wagons. Photographed wagons include 12 and 16 as VHRX and 22, 25, 27, 28, 30, 33, 36, 39, 40, 43, 44, 59–61, 65–67, 69, 70, 72 and 78 as VHRF; based on this it seems reasonable to assume that other conversions, if any, would have come from the aluminium-built group of wagons. Since the Pacific National takeover these wagons have all reverted to their previous grain classifications. VHAF, VHLY, VHKY & VHNY (100t grain experiments) In 1999, Freight Victoria, by then the operator of all Victorian freight trains, had expanded its grain operations to the Riverina areas of NSW; to facilitate this about 100 wagons from the post-1979 batches (selected fairly randomly) became VHAF; the new code represented their additional air-operated roof lids and discharge doors, operated by the main air-reservoir pipe (another group of ex JAF/X type wagons from the 1974 build also used this code). Further conversions occurred in 2001–2003, when Freight Australia contracted ANI Bradken (Mittagong, NSW) to rebuild 22 of the VHEF class and 20 of the VHGF class to achieve a capacity; the former were rebuilt into VHNY-class grain wagons, becoming 1000–1021, while the latter kept their numbers (in the 230–296 range) but were reclassed to VHLY. The modifications were achieved by adding pneumatic roof hatches and discharge doors, strengthened side sills, a higher roof and stronger bogies. Around the same time, for comparison purposes, Alstom was contracted to new-build nine grain hoppers at its Ballarat North Workshops; these became VHKY 1151–1159. Therefore, assuming the total of 637 GJX/F-style wagons is accurate, the total build of this series is 796 wagons over a 35-year timespan. ==1974 J series (gravity discharge)==

A range of 190 wagons constructed to similar designs from 1974 with three-character codes. The first would always be a J, giving the class group. The second letter would be a different letter based on the intended traffic (i.e. A for soda ash giving JAF, B for briquettes giving JBF and so on), resulting in seven different classes. Finally, the third letter would be either an F or X; if F the wagon was allowed to run at ; if X the same, but it could also be bogie exchanged for running on standard and narrow gauge lines if the loading gauge/structure gauge permitted. The initial build made up 155 wagons of seven classes; 35 JB, 30 JC, 40 JS, 20 JQ and 10 each for the JD, JA and JP classes. A further batch of wagons were built to the JBF design but by then with different codes, with 35 new wagons bringing the total to 190. Initially the classes were to be released to service with an X as the final letter, but this changed for a short time between 1977 and 1978 when the Victorian Railways chose to remove the gauge-conversion facilities from a large portion of its fleet. This was a short-lived change, and the vast majority of wagons were back to being gauge-convertible by the next recoding period. When these wagons were recoded in the 1979 ROA Recoding, they went to four-letter codes always starting with VH, for Victorian and Hopper-type respectively. The third letter would then indicate the traffic and mostly the letters stayed the same, though the letter F replaced P for fertiliser/phosphate traffic, as a code ending in PY was then used for passenger rollingstock. The fourth letter would either be F, indicating and non-bogie-exchangeable, X, indicating and Bogie Exchangeable, or Y indicating , non-bogie-exchangeable. Early on there was a mixup in VR's lettering system so many wagons had the final letter Y applied instead of F; this was realised around 1988/89 and fixed. Conversions between the classes happened fairly regularly, as the centre unit of each wagon was very similar if not identical; the changes were mainly to the roof, if any, the discharge mechanism, and the addition or removal of plates over the ends, shielding the brake equipment. As a result, the latest set of modifications and not counting scrappings gives 57 wagons for quarry traffic, 65 ballast wagons, 33 fertiliser wagons and 35 sand wagons. JAF & VHAF/Y (soda ash) Built from late 1977, this variety of wagon was designed for the transport of soda ash, used in the manufacture of glass. The wagons were unloaded at the ICI glass plant at Yarraville. they were numbered 501 – 510 and given the code JAF to indicate J-series, Ash transport, Freight speeds (60 mph) allowed. The original plan was to use the code JAX, but this was rejected on the grounds of interstate operational issues. From 1979, the class became VHAY; then, in 1987/88, the wagons was further reclassed to VHAF as the letter Y was deleted from the four-letter code system. As the soda-ash traffic dried up, the wagons were modified and recoded for other uses; these modifications allowed the wagons to run in traffic carrying either cement or fertiliser. In the early 1990s, wagons VHAF 501–504, 508 and 510 became VHFF 611 to 616 in order; around the same time wagons 505, 506, 507 and 509 were reclassed to VHFX, numbers 21, 23, 20 and 22. By 1994, these had also been reclassed to VHFF, but they retained their VHFX numbers instead of being renumbered to the 600 range. JBF & VHBY (briquettes) Briquettes, combustible "biscuits" made by compressing brown coal dust under extreme pressure, had been produced in the Latrobe Valley since the late 1920s, using technology acquired from Germany following World War I. Until the late 1970s, normal transport of these bricks was by standard four-wheeled I and IA wagons, which by 1977 were being removed from service as obsolete, worn-out technology. To fill the gap, 35 new wagons to the J-hopper style were built in 1977/78. The variations from the standard JQX series quarry hoppers were minor; these wagons had "hungry boards" added to increase their volume capacity, as briquettes are not as dense as rocks and therefore more can be held by a given wagon. The new wagons held numbers 1 to 35, and ran from Morwell to a briquette discharge siding in Footscray, and to the Nestlé factory in Dennington. In the 1979, recoding the wagons were classed VHBY. In 1982, two wagons were removed from briquette traffic and altered to the VHQY class for quarry trains; wagons JBF 32 and 33 became VHQY 421 and 422, with the hungry boards deleted. By mistake, JBF 30 was stencilled VHQY 30 for a couple of days until corrected – although the wagon was later legitimately recoded to VHQY, taking the number 424. Around the same time, JBF wagons 34 and 1 became VHQY 423 and 425, expanding that class's number series from 420 to 425. By 1986, all but five of the class had been withdrawn from briquette traffic, as they had been supplanted by the VHEY class. Five were converted to VHQY for quarry traffic, and the rest to VHMF for ballast trains. JCF/X & VHCX/Y (cement powder) These wagons, designed for cement traffic, were released to traffic in 1974 as the JCX class, numbers 101 to 115. The first built, JCX 101, had scalloped ends similar to the design used for the 1966 grain series; all others in the class had flat sheets for the ends. To reduce the number of wagons available for bogie exchange (as wagons had a habit of disappearing interstate and only reappearing when due for maintenance), from 1977 the class was recoded to JCF. Also at this time, a further 15 wagons, 116 to 130, were being assembled in Ballarat Workshops. Released as JCX, they were immediately taken to Newport for reclassification. The change to JCF proved to be only temporary, as by 1978 the first fifteen had been converted back to JCX, probably to allow for interstate cement traffic such as the construction of Canberra's new Parliament House. The JCX class was recoded to VHCX 101–115 in the 1979 recoding, while JCF 116–130 became VHCY. By 1980, these wagons had also become VHCX, for a total class of 101 to 130. In 1986/87, the class was further expanded with the addition of wagons 131 to 135, converted from VHSY sand hoppers 301, 303, 319, 328 and 335. While in Victoria, the class was primarily used for cement powder transport from Fyansford, near Geelong JDF/X & VHDX/Y (dolomite), VHJX (gypsum) For dolomite traffic between Tantanoola, South Australia and the glass factory at Dandenong, Victoria, ten covered hopper wagons were built in 1974. Coded JDX and given numbers 201 to 210, they were of a gravity discharge design, with top fill. In 1977 the class was relettered to JDF, then in 1979 to VHDY. A further change took place in 1987, giving the class VHDX and, after nearly fifteen years, restoring the wagons to bogie-exchange services. In late 1989, wagons 201, 202 and 208 had their lids cut off, and they were modified to VHQF, though they kept their numbers. Slope sheets were added to the ends of the wagons to prevent damage to brake equipment with loading overspill. The other wagons in the class, 203–207, 209 and 210, were modified in a similar way but without the slope sheets, around 2000, and given the class VHJX for gypsum traffic. This conversion was done for traffic between Nowingi, Gherinhap and Waurn Ponds. During this conversion, the wagons were painted into Freight Australia colours. Following the cessation of the Nowingi traffic in late 2004 the wagons have been seen in use on the quarry train between Kilmore East and Westall. JPF & VHFF/X/Y (fertiliser) These wagons were built in 1978 to transport superphosphate between the main superphosphate supplier in Geelong and its own distribution centre in Wodonga. The wagons were coded JPF and numbered 601 – 610. In the 1979 recoding they became VHFY; at the time the combination PY was used to indicate passenger train use, so a swap was effected from the code P for phosphate, to F for fertiliser. In 1988/1989, wagons 603, 604 and 606 – 610 were noted as reclassed from VHFY to VHFF. It is likely that the other wagons were similarly converted. In 1991, wagons VHFX 20–23 were converted over from the VHAF class, and in 1993/94 the rest of the VHAF class was converted over to VHFF, becoming numbers 611–616. In 1994, wagons 20–23 were reclassed to VHFF. In 1990/1991, thirteen VHCX were modified to VHFX. The VHCX numbers (104, 116, 117, 119–124, 127, 128, 133 and 135) were retained. Wagons were stored at North Geelong from around 2000, and scrapping started in mid-2013. JQF, VHQF/Y (quarry) From 1974, ten wagons coded JQF were built for quarry traffic. These were by far the simplest of the J series hoppers, with no roof and a very basic discharge system. The wagons were numbered 401 to 410, and a second batch added numbers 411–420. Five briquette wagons were also modified to give wagons 421–425. In 1994, the class doubled in size, with wagons from the VHCX, VHDX and VHRX classes being converted to VHQF numbers 201–225, for a total of 50. The ex-VHRX wagons took on numbers 211–223, adding 210 to their previous number, while the three ex-VHDX wagons kept their original numbers of 201, 202 and 208, and the ex-VHCX wagons randomly filled numbers 203–207, 209, 210, 224 and 225, despite the duplication with the VHJX group's 203–207, 209 and 210. (VHJX and VHDX were originally the same class). JSF/X & VHSF/Y (sand) For sand traffic, used in the manufacture of glass products, twenty wagons were issued to traffic in 1974. The class was JSX and the numbers were 301 – 320. From late 1977, the VR chose to reletter a large number of bogie-exchangeable vehicles to remove that facility; JSX then became JSF. Around this time wagons 321–325 were delivered from Ballarat Workshops. The wagons arrived at Newport Workshops as JSX, but were repainted and released to traffic as JSFs. Some official records indicate that they were supposed to have been released as JSX and renumbered later. During 1978/1979 a further fifteen wagons were built, bringing the class total to 40. In the 1979 recoding (which took until 1983 to complete), the class became VHSY. The wagons were organised into sets of seven or eight per train, with trains running six days per week from the ACI Resources Lang Lang sand mine to the Pilkington ACI plant at Dandenong, and to the Australian Glass Manufacturers siding at Spotswood, with spare wagons held if needed. In the mid-1980s, five wagons (301, 303, 319, 328 and 335) were modified and recoded to VHCX for cement powder transport; a few years later the remaining 35 wagons were recoded to VHSF. ==2000 ex-NSW rice hoppers==

During late 2000, Freight Australia purchased a fleet of fifty ex-NSW NGMF hopper wagons from a scrap metal dealer in New South Wales. The wagons were refurbished, repainted to green with "FREIGHT AUSTRALIA" logos on the sides and had broad gauge bogies fitted at the Bendigo North Workshops, and were reclassed VHBF 1101–1150. They started running in January 2001 on rice trains between Deniliquin and Echuca. VHBF 1120 retained its number plate from its original identity, 29218. By 2005, at least one was fitted with a "Pacific National" decal on either side, over the top of the green paintjob. ==Narrow Gauge Wagons==

Traffic that would ordinarily be placed in hopper wagons was usually loaded into NQR type wagons on the narrow gauge, including ballast and coal. However, in the preservation era Puffing Billy acquired a pair of ex-Tasmanian hopper wagons for use on ballast trains, and reclassed them as NNN. Details are covered on the appropriate page. ==References==