{{Short description|Class of diesel-electric locomotives}} {{Use Australian English|date=May 2026}} {{Use dmy dates|date=May 2026}} {{Infobox locomotive |name = Westrail DB Class |powertype = Diesel-electric |image = DB1588 Forrestfield, 1986.JPG |caption = DB1588 at Forrestfield Marshalling Yard in April 1986. |builder = Clyde Engineering, Rosewater |serialnumber = 81-989 to 81-998<br>82-1122 to 82-1124 |buildmodel = EMD G26CU-2 |builddate = 1982-1983 |totalproduction = 13 |aarwheels = C-C |uicclass = Co-Co |gauge = {{track gauge|1067mm|lk=on}} |bogies = Clyde Hi-Ad |wheeldiameter = {{convert|1016|mm|in|1|abbr=on}} |length = {{convert|18.01|m|ftin|2|abbr=on}} |width = {{convert|2.85|m|ftin|2|abbr=on}} |height = {{convert|3.95|m|ftin|2|abbr=on}} |axleload = {{convert|18|t|abbr=on}} |locoweight = {{convert|110|t|abbr=on}} |fueltype = Diesel |fuelcap = {{convert|6000|L|0|abbr=on}} |lubecap = {{convert|757|L|0|abbr=on}} |coolantcap = {{convert|795|L|0|abbr=on}} |primemover = EMD 16-645E |rpmrange = 255-900 |enginetype = Diesel |aspiration = Roots Blown |alternator = EMD AR6-G |tractionmotors = EMD D29 (6 of) |cylindercount = V16 |poweroutput = {{ubl|{{convert|1,715|kW|hp|-1|abbr=on}}}} |tractiveeffort = {{ubl|{{convert|322|kN|lb-f|abbr=on}} (starting)|{{convert|269|kN|lb-f|abbr=on}} (continuous)}} |trainbrakes = Air & Vacuum |operator = Aurizon, Watco Australia |numinclass = 13 |fleetnumbers = {{ubl|DB1581–DB1593/|DBZ2301–DBZ2313}} |locale = Western Australia |deliverydate = 26 April 1982 |firstrundate = 27 April 1982 |lastrundate = May, 1983 |currentowner = Aurizon, Watco Australia |disposition = 2 in service, 11 stored }}
The '''Westrail DB Class''' is a class of diesel-electric locomotives built by Clyde Engineering, Rosewater, for Westrail in 1982-1983.
==History== [[File:DBZ 2309 ALB 2017 (2) (35315212903).jpg|thumb|left|DBZ2309 at the Port of Albany with a woodchip train, 2017]] In 1980, Westrail ordered ten DB Class locomotives from Clyde Engineering, Rosewater. Designated as the EMD G26CU-2, they were an evolution of the D and DA classes. The original order was extended to thirteen in October 1980.<ref name=RailwaysIllustratedAug11>{{cite journal|title=Loco Brief: DB/2300|journal=Australian Railways Illustrated|date=August 2011|issue=9|page=27|issn=1837-915X}}</ref> The class were fitted with a full-width cab, dual braking (air and vacuum) systems, a pressurised body to exclude dust and were the first Westrail locomotives to have air-conditioned cabs.<ref name=MP>"The Westrail DB Class" ''Motive Power'' issue 94 July 2014 pp. 29-41.</ref>
They were not owned by Westrail, but leverage leased from LVL Nominees, entering service between April 1982 and May 1983. All were named after cities and shires in South West Western Australia.<ref>{{cite book|last=Oberg|first=Leon|title=Locomotives of Australia 1850s-1980s|year=1984|publisher=Reed Books|location=Frenchs Forest|isbn=0-730100-05-7|page=299}}</ref> Brass nameplates were originally fitted, but these were later replaced by painted names.<ref name=MP/>
All were included in the sale of Westrail to Australian Railroad Group in December 2000, the State Government having bought out the leases shortly before. As part of a policy to drop letter classifications in favour of a numeric system based on horsepower, they became the 2300 Class. In May 2003, 2313 was transferred to Australian Southern Railroad's Whyalla operation, it returned in August 2006.<ref name=RailwaysIllustratedAug11/><ref name=MP/>
In June 2006, all were included in the sale of Australian Railroad Group's Western Australian operation to QR National. Between 2006 and 2012, all were equipped with ZTR engine control equipment. A change in policy saw letter classifications reintroduced, with the class again becoming the DB Class. Upon being fitted with ZTR equipment, they were reclassified as DBZs.<ref name=RailwaysIllustratedAug11/><ref name=MP/>
All remained in service at the beginning of 2013, however 12 months later this was down to five with the last two withdrawn in March 2014. By June 2014, seven had returned to service.<ref name=MP/>
In December 2017, CBH Group purchased 10 units from Aurizon (DBZ2301-2308, 2312-2313) for use on their wheat train services, operated by Watco Australia at the time. These units were transferred to Beverley for further storage pending reactivation. By July 2019, three units, DBZ2301, 2302 and 2305, had entered service with their new owners.
In 2023, all CBH owned locomotives were stored pending shipping to South Africa before the sale fell through just two days before they were due to leave. One year later, Watco had purchased the units from CBH and have transferred them from Beverley to the Wheatbelt Heritage Rail Centre in Minnivale.<ref>{{cite web|url=https://www.flickr.com/photos/20941012@N05/53553107431/|title=DBZ2301 DBZ2313 DBZ2305 AB1535 2WL2 Muresk|date=5 February 2024|access-date=26 February 2024}}</ref> {{clear left}}
==Class list==
{| class=wikitable !Key: |bgcolor=#FFFFFF|In Service |bgcolor=#FF6699|Stored |bgcolor=#0099FF|Preserved |bgcolor=#00CC00|Converted |bgcolor=#FF6600|Under Overhaul |bgcolor=#808080|Scrapped |}
{|class="wikitable sortable" |- !Serial number!!Entered service!!Original Road Number!!Renumbered As!!Name!!Current/Last Owner!!Status!!Notes |- |bgcolor=#FFFFFF|81-989 |bgcolor=#FFFFFF|Tuesday, 27 April 1982 |bgcolor=#FFFFFF|DB1581 |bgcolor=#FFFFFF|DBZ2301 |bgcolor=#FFFFFF|City of Bunbury |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|81-990 |bgcolor=#FFFFFF|May 1982 |bgcolor=#FFFFFF|DB1582 |bgcolor=#FFFFFF|DBZ2302 |bgcolor=#FFFFFF|Shire of Serpentine-Jarrahdale |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|81-991 |bgcolor=#FFFFFF|June 1982 |bgcolor=#FFFFFF|DB1583 |bgcolor=#FFFFFF|DBZ2303 |bgcolor=#FFFFFF|Shire of Murray |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|81-992 |bgcolor=#FFFFFF|July 1982 |bgcolor=#FFFFFF|DB1584 |bgcolor=#FFFFFF|DBZ2304 |bgcolor=#FFFFFF|Shire of Waroona |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|81-993 |bgcolor=#FFFFFF|August 1982 |bgcolor=#FFFFFF|DB1585 |bgcolor=#FFFFFF|DBZ2305 |bgcolor=#FFFFFF|Shire of Harvey |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|81-994 |bgcolor=#FFFFFF|September 1982 |bgcolor=#FFFFFF|DB1586 |bgcolor=#FFFFFF|DBZ2306 |bgcolor=#FFFFFF|Shire of Dardanup |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|Stored (Minnivale) |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|81-995 |bgcolor=#FFFFFF|October 1982 |bgcolor=#FFFFFF|DB1587 |bgcolor=#FFFFFF|DBZ2307 |bgcolor=#FFFFFF|Shire of Capel |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|81-996 |bgcolor=#FFFFFF|November 1982 |bgcolor=#FFFFFF|DB1588 |bgcolor=#FFFFFF|DBZ2308 |bgcolor=#FFFFFF|Shire of Donnybrook-Balingup |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FF6699|81-997 |bgcolor=#FF6699|December 1982 |bgcolor=#FF6699|DB1589 |bgcolor=#FF6699|DBZ2309 |bgcolor=#FF6699|Shire of Bridgetown-Greenbushes |bgcolor=#FF6600|Aurizon |bgcolor=#FF6699|Stored (Forrestfield) |bgcolor=#FF6699|- |- |bgcolor=#FF6699|81-998 |bgcolor=#FF6699|February 1983 |bgcolor=#FF6699|DB1590 |bgcolor=#FF6699|DBZ2310 |bgcolor=#FF6699|Shire of Collie |bgcolor=#FF6600|Aurizon |bgcolor=#FF6699|Stored (Forrestfield) |bgcolor=#FF6699|Swapped names with DBZ2311 during overhaul. |- |bgcolor=#FF6699|82-1122 |bgcolor=#FF6699|March 1983 |bgcolor=#FF6699|DB1591 |bgcolor=#FF6699|DBZ2311 |bgcolor=#FF6699|Shire of Manjimup |bgcolor=#FF6600|Aurizon |bgcolor=#FF6699|Stored (Forrestfield) |bgcolor=#FF6699|Swapped names with DBZ2310 during overhaul. |- |bgcolor=#FFFFFF|82-1123 |bgcolor=#FFFFFF|May 1983 |bgcolor=#FFFFFF|DB1592 |bgcolor=#FFFFFF|DBZ2312 |bgcolor=#FFFFFF|Shire of Toodyay |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|- |- |bgcolor=#FFFFFF|82-1124 |bgcolor=#FFFFFF|May 1983 |bgcolor=#FFFFFF|DB1593 |bgcolor=#FFFFFF|DBZ2313 |bgcolor=#FFFFFF|Shire of Northam/Iron Duke/Shire of Dowerin |bgcolor=#FFFFFF|Watco Australia |bgcolor=#FFFFFF|In Service |bgcolor=#FFFFFF|Transferred to Australian Southern Railroad, Whyalla in May 2003 and renamed "Iron Duke". Returned to Western Australia in August 2006 and renamed "Shire of Dowerin". |}
==References== {{Reflist}}
==External links== {{commonscat-inline|WAGR DB class}} *[https://www.flickr.com/photos/railwayofaustralia/sets/72157622688983619/ Flickr gallery] *[http://wastations.i8.com/Locomotives/Classes/DB%20diesel/WAGR%20DB%20diesel.html History of Western Australian Railways & Stations gallery] {{Webarchive|url=https://web.archive.org/web/20140203160330/http://wastations.i8.com/Locomotives/Classes/DB%20diesel/WAGR%20DB%20diesel.html |date=3 February 2014 }}
{{WAGR Locomotives|state=collapsed}}
Category:Aurizon diesel locomotives Category:Clyde Engineering locomotives Category:Co-Co locomotives Category:Diesel locomotives of Western Australia Category:Railway locomotives introduced in 1982 Category:3 ft 6 in gauge locomotives of Australia Category:Diesel–electric locomotives of Australia