New South Wales 45 (later 71) class locomotive

Specifications
Specifications
Configuration:;
• UIC	Co′Co′
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	48 in (1,219 mm)
Wheelbase	41 ft (12.5 m)
Length	Over headstocks:; 52 ft 2 in (15.90 m),; Over coupler pulling faces:; 55 ft 4 in (16.87 m)
Width	9 ft 7 in (2,921 mm)
Height	Over stowed pantograph: 14 ft 6 in (4,420 mm)
Axle load	18 long tons 0 cwt (40,300 lb or 18.3 t)
Loco weight	108 long tons 0 cwt (241,900 lb or 109.7 t)
Sandbox cap.	17.6 cu ft (0.50 m3)
Electric system/s	1,500 V DC Catenary
Current pickup(s)	Two pantographs
Traction motors	6 × Metropolitan-Vickers 179

New South Wales 4501 (later 7100)
New South Wales 4501 (later 7100)
	7100 at Berowra in June 1962
Power type
Type and origin
Power type	Electric
Builder	Chullora Railway Workshops
Build date	1952
Total produced	1
Configuration:;
Specifications
Configuration:;
• UIC	Co′Co′
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	48 in (1,219 mm)
Wheelbase	41 ft (12.5 m)
Length	Over headstocks:; 52 ft 2 in (15.90 m),; Over coupler pulling faces:; 55 ft 4 in (16.87 m)
Width	9 ft 7 in (2,921 mm)
Height	Over stowed pantograph: 14 ft 6 in (4,420 mm)
Axle load	18 long tons 0 cwt (40,300 lb or 18.3 t)
Loco weight	108 long tons 0 cwt (241,900 lb or 109.7 t)
Sandbox cap.	17.6 cu ft (0.50 m3)
Electric system/s	1,500 V DC Catenary
Current pickup(s)	Two pantographs
Traction motors	6 × Metropolitan-Vickers 179
Maximum speed
Performance figures
Maximum speed	70 mph (113 km/h)
Power output	One hour: 2,700 hp (2,013 kW)
Tractive effort	Continuous:; 28,000 lbf (124.55 kN)
Operators
Career
Operators	NSW Department of Railways
Number in class	1
Numbers	4501, 7100 from October 1961
Nicknames	Green Beetle
First run	21 July 1952
Withdrawn	June 1974
Disposition	1 preserved

The 45 class (later the 71 class) was a class of mainline electric locomotive built in-house in 1952 by the New South Wales Department of Railways' Chullora Railway Workshops. With only a single locomotive in the class, 4501 was renumbered 7100 in October 1961, which freed up the number range for the 45-class diesel locomotives.