| Tasmanian Government Railways ZA class | |
| Powertype: | Diesel-electric |
| Builder: | English Electric Rocklea |
| Serialnumber: | A.259 to A.262, A.278 to A.279 |
| Builddate: | 1973-1976 |
| Totalproduction: | 6 |
| Uicclass: | Co-Co |
| Wheeldiameter: | 3feet |
| Wheelbase: | 39feet total, 11feet bogie |
| Length: | 52feet over headstocks |
| Height: | 12feet |
| Axleload: | 16LT |
| Locoweight: | 96LT |
| Fueltype: | Diesel |
| Fuelcap: | 1400impgal |
| Primemover: | English Electric 12CSVT Mk III |
| Enginetype: | four stroke, four valves per cylinder |
| Aspiration: | turbocharged, intercooled |
| Alternator: | Toyo WD10314A |
| Tractionmotors: | EE558 |
| Cylindercount: | 12 Vee |
| Cylindersize: | 10x |
| Multipleworking: | 110V, stepless electro-pneumatic throttle |
| Poweroutput: | 2550-1NaN-1 gross, 2350-1NaN-1 net |
| Tractiveeffort: | 540001NaN1 at 13.3-1NaN-1 |
| Locobrakes: | Air, proportional control, dynamic |
| Trainbrakes: | Vacuum, converted to air 1982-1985) Westinghouse M6A then M9A |
| Operator: | Tasmanian Government Railways |
| Numinclass: | 6 |
| Fleetnumbers: | Za1-Za6 |
| Deliverydate: | Za 1 to Za 4 July 1973, Za 5 & Za 6 1976 |
| Firstrundate: | 10th July 1973 |
| Withdrawndate: | May 2014 |
| Preservedunits: | 2 |
| Currentowner: | TasRail, Don River Railway & Tasmanian Transport Museum |
| Disposition: | 1 stored, 2 preserved, 3 scrapped |
The Za class are a class of diesel locomotives built by English Electric Rocklea for the Tasmanian Government Railways in 1973.
With the construction of a new line from Launceston to Bell Bay, Tasmanian Government Railways placed an order for four 1752 kW locomotives with English Electric. A further two were delivered in 1976, ZA 6 being the final locomotive built by GEC Australia[1] [2] and the last English Electric locomotive built anywhere. The 1976 locomotives differed from the earlier batch in having a rounded cab roof, similar to the Z class, instead of an angled roof like the 2350 class from which they were derived.
In March 1978 the Za class were included in the transfer of the Tasmanian Government Railways to Australian National. From 1982 all had their vacuum brakes replaced with air brakes.[3]
In 1988, ZA6 was painted into a modified version of the AN green and gold scheme, with a Tasmanian state flag on the ends of the locomotive where the AN logo usually sat, and the logo for the Bicentenary celebrations on the long hood, to celebrate the Australian Bicentenary. In 1996, it was repainted into the then-standard reverse yellow and green scheme, however it retained the bicentennial modifications.
In June 1998 the five in service were renumbered as the 2114 class, ZA4 having been withdrawn.[4]
In May 2014, 2114 joined 2115 and 2118 in storage after the new TR class entered full service. 2118 (ZA6) was held for preservation with 2115 (ZA2) retained as a parts donor.
On 14 January 2021, the Tasmanian Transport Museum announced that they had managed to secure ZA6, launching a GoFundMe campaign for its restoration the following day.
ZA 1 (2114) was delivered to Don River Railway for preservation on 23 May 2022. Its preservation funded by a sole member - Kyle Stennings
| Original no | Last no | Owners | Livery | Status |
|---|---|---|---|---|
| Za1 | 2114 - 2114 will be renumbered to ZA 1 on repaint | Don River Railway | AN/Tasrail reverse yellow and green (to be repainted in ANR tiger stripe) | Preserved Operational |
| Za2 | 2115 | TasRail | AN/Tasrail reverse yellow and green | Stored |
| Za3 | 2116 | TasRail | AN/Tasrail reverse yellow and green | Scrapped |
| Za4 | Za4 | AN Tasrail | AN/Tasrail green and yellow | Scrapped |
| Za5 | 2117 | TasRail | AN/Tasrail reverse yellow and green | Scrapped |
| Za6 | 2118 | Tasmanian Transport Museum | AN/Tasrail reverse yellow and green (to be repainted into bicentennial AN/Tasrail green and yellow) | Preserved |