New Zealand DQ and QR class locomotives
DQ 6324 at Palmerston North
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| Type and origin | |
|---|---|
| Power type | Diesel-electric |
| Builder | Clyde Engineering, Eagle Farm, Australia |
| Model | Electro-Motive Diesel G22C |
| Build date | 1996-99 |
| Rebuilder | Hutt Workshops |
| Number rebuilt | 16 (DQ), 6 (QR) |
| Specifications | |
|---|---|
| UIC class | Co-Co |
| Gauge | 1,067 mm (3 ft 6 in) |
| Wheelbase | 13.55 m (44 ft 5 in) between bogies 2.58 m (8 ft 6 in) between axles in each bogie |
| Length | 16.3 m (53 ft 6 in) |
| Loco weight | 92 tonnes (91 long tons; 101 short tons) |
| Fuel type | Diesel |
| Prime mover | Electro-Motive Diesel 645E |
| Engine type | V12 2 stroke diesel |
| Generator | Electro-Motive Diesel D25 or D32T |
| Traction motors | Electro-Motive Diesel D29 |
| Cylinders | 12 |
| Performance figures | |
|---|---|
| Maximum speed | 80 km/h (50 mph) |
| Power output | 1,120 kW (1,500 hp) |
| Tractive effort |
1460: 1,065 kW (1,428 hp) 1502: 1,230 kW (1,650 hp) |
| Career | |
|---|---|
| Operators | Tranz Rail, RRL Grindrod, TasRail |
| Number in class | 25 (1460: 21 1502: 4) 16 rebuilt as DQ class, 6 as QR class, 3 spares only |
| First run | January 1996 - May 1998 |
| Last run | March 2013 |
| Retired | August 1998 - March 2013 |
| Withdrawn | August 1998 - March 2013 |
| Current owner | RRL Grindrod TasRail |
| Disposition | 14 in service, 7 stored, 4 scrapped |
The DQ and QR class were a class of diesel locomotives in New Zealand and Tasmania, Australia. Originally built by Clyde Engineering in the 1960s as Queensland Rail 1460 and 1502 class locomotives, they were purchased by Tranz Rail in 1995 to be rebuilt, as a cheaper alternative to buying new locomotives.
In 1995, Tranz Rail purchased twenty-one 1460 and four 1502 class locomotives with the intention of rebuilding them for service in New Zealand. Seven 1460 and one 1502 class were shipped to Auckland in early 1998 and hauled to Hutt Workshops in Wellington. Two more batches followed, one on the inter-island rail ferry MV Aratika returning from Brisbane after a heavy engineering inspection.
Tranz Rail split them into two classes. The DQ class were rebuilt with a new cab and low nose and painted in the standard 'Cato Blue' scheme, with dynamic brakes, a computerised control system and rebuilt engine. The QR class were overhauled with auto-transition couplings and repainted in a variant of the 'Cato Blue' livery, these were only used as trailing locomotives as they were not fitted with the safety equipment required to lead trains.
The first locomotive outshopped was ex 1521 in October 1996 as DQ15215, a temporary number that combined the Queensland number with a TMS check digit, it was soon renumbered as DQ 6007 and nicknamed Platypus . Those rebuilt from 1502 class locomotives received 60xx numbers and those from 1460 class received 63xx numbers. This was done to differentiate the different power output of class members. 6007 had a horizontal mounted headlight and numbers below the headlight assembly on the front wall of the cab: the rest had vertical mounted headlights and numbers on either side of the headlight assembly.
The first QR class entered service in October 1997. Three (1499-1501) were not rebuilt but used as sources of spare parts at Hutt Workshops.
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Wikipedia