New Zealand DA class locomotive

Specifications
Specifications
Configuration:;
• UIC	A1A-A1A
Gauge	3 ft 6 in (1,067 mm)
Length	GMD/EMD 14.1 metres (46 ft 3 in); Clyde 14.6 metres (47 ft 11 in)
Adhesive weight	59.0 tonnes (58.1 long tons; 65.0 short tons)
Loco weight	GMD/EMD 81.0 tonnes (79.7 long tons; 89.3 short tons) ; Clyde 79.0 tonnes (77.8 long tons; 87.1 short tons)
Fuel type	Diesel
Prime mover	EMD 12-567C and EMD 12-567E
RPM range	835 rpm
Engine type	V12 Diesel engine
Aspiration	Roots type supercharger
Displacement	111.49 L (6,804 cu in)
Traction motors	Four EMD D19 or D29
Cylinders	12
Cylinder size	216 mm × 254 mm (8.5 in × 10.0 in)

Type and origin
Type and origin
Power type	Diesel-electric
Builder	General Motors Diesel (Canada) ; Electro-Motive Division (USA) ; Clyde Engineering (Australia)
Model	EMD G12
Build date	1955 - 1967

New Zealand DA class
New Zealand DA class
	DA 1431 (DA345) at Helensville in 2017 on an excursion.
Power type
Type and origin
Power type	Diesel-electric
Builder	General Motors Diesel (Canada) ; Electro-Motive Division (USA) ; Clyde Engineering (Australia)
Model	EMD G12
Build date	1955 - 1967
Configuration:;
Specifications
Configuration:;
• UIC	A1A-A1A
Gauge	3 ft 6 in (1,067 mm)
Length	GMD/EMD 14.1 metres (46 ft 3 in); Clyde 14.6 metres (47 ft 11 in)
Adhesive weight	59.0 tonnes (58.1 long tons; 65.0 short tons)
Loco weight	GMD/EMD 81.0 tonnes (79.7 long tons; 89.3 short tons) ; Clyde 79.0 tonnes (77.8 long tons; 87.1 short tons)
Fuel type	Diesel
Prime mover	EMD 12-567C and EMD 12-567E
RPM range	835 rpm
Engine type	V12 Diesel engine
Aspiration	Roots type supercharger
Displacement	111.49 L (6,804 cu in)
Traction motors	Four EMD D19 or D29
Cylinders	12
Cylinder size	216 mm × 254 mm (8.5 in × 10.0 in)
Maximum speed
Performance figures
Maximum speed	100 km/h (62 mph)
Power output	1,060 kW (1,420 hp)
Tractive effort	140 kN (31,000 lbf)
Numbers
Career
Numbers	DA 1400–1545 (original) ; DA 11–996 (TMS)
First run	1955 - 1967
Last run	1977 - 1989
Current owner	Museum of Transport & Technology; Steam Incorporated; Dean McQuoid; Feilding and District Steam Rail Society
Disposition	85 rebuilt as DC Class ; 6 as DAA (defunct), 1 as DAR517 (scrapped), 6 preserved (4 in service on heritage or excursion trains, 1 under restoration, 1 on static display)

The New Zealand DA class locomotive is a class of diesel-electric mainline locomotives operated on the New Zealand railway system between 1955 and 1989. Consisting of 146 locomotives, it is the most numerous class to ever operate in New Zealand, with five more than the A^B class steam locomotive.

The class is an A1A-A1A version of the Electro-Motive Diesel (EMD) G12 model, with the design altered slightly to run on New Zealand's 3 ft 6 in (1,067 mm) rail system, and fit the small loading gauge. They were introduced between 1955 and 1967 in three phases and were the first class of diesel locomotives to seriously displace steam traction.

Between 1978 and 1983, 85 locomotives were rebuilt as the DC class, of which some are still in use. All but one of the remainder were withdrawn by 1989, with six preserved. The last locomotive was refitted for shunting duties and was rebuilt as DAR 517.