- New South Wales 421 class locomotive
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New South Wales 421 class 
421 locomotive in Interail livery Power type Diesel-electric Builder Clyde Engineering Co. Pty. Ltd., Granville, NSW Serial number 65-468, 66-469 to 66-477 Model EMD AJ16C Build date 1965–1966 Total produced 10 UIC classification Co′Co′ Gauge 4 ft 8 1⁄2 in (1,435 mm) Wheel diameter 40 in (1,016 mm) Length Over headstocks: 57 ft 10 in (17.63 m),
Over coupler pulling faces: 62 ft ¾ in (18.92 m)Width 9 ft 8 in (2.95 m) Height 13 ft 10 1⁄2 in (4.23 m) Axle load 18 tons 0 cwt (40,300 lb or 18.3 t) Locomotive weight 108 tons 0 cwt (241,900 lb or 109.7 t) Fuel type Diesel fuel Fuel capacity 1,200 imp gal (5,500 l; 1,400 US gal) Lubricant capacity 166 imp gal (750 l; 199 US gal) Coolant capacity 175 imp gal (800 l; 210 US gal) Sandbox capacity 12 cu ft (0.34 m3) Prime mover EMD 16-567C Engine RPM range 275–835 Engine type Two-stroke diesel Aspiration Roots blower Generator EMD D32F Traction motors EMD D67 (6 off) Cylinders V16 Cylinder size 8.5 × 10 in (216 × 254 mm) Top speed 71 mph (114 km/h) Power output Gross: 1,950 hp (1,450 kW),
For traction: 1,800 hp (1,340 kW)Tractive effort Continuous: 70,900 lbf (315.38 kN) at 6.9 mph (11.1 km/h) Career New South Wales Government Railways Number 42101–42110 First run 23 December 1965 Disposition 5 in service with Interail
2 preserved
3 scrappedThe 421 class was built in between 1965 and 1966 by the Clyde Engineering in Granville, New South Wales. These mainline locomotives were a follow on from the 42 class units, which had one cab only. The locomotives retained the classic "bulldog nose" as with the other Clyde built locomotives, i.e. GM, S and 42 classes at one end, but feature a flat-cab at the other end. In this respect, they are unique amongst bulldog-nose locomotives in the world.
The locomotives had an EMD 16-567C engine producing 1,455 kilowatts (1,951 hp), with an EMD D32F generator and EMD D67 traction motors. The 421 class can achieve a top speed of 115 km/h. They ride on Co-Co bogies and operate on standard gauge. They are 18.91 m long and weigh 110 tonnes.
Five locomotives were bought by Northern Rivers Railroad 42103, 42105, 42106, 42107, 42109, which was then sold to Queensland Rail subsidiary Interail. Other units saved were 42101 which is preserved at the Goulburn Roundhouse Heritage Centre (private), while 42102 is preserved at the Dorrigo Steam Railway and Museum. 42106 is still stored at Casino and never entered service with NRR or Interail
As of Jan 18th, 2011 42101 is now at 3801 Ltd workshop, having its interior restoration finished.
Modeling
The 421 class was produced in RTR HO Scale by Austrains
See also
References
- John Cleverdon. "Locopage: SRA 421 class". http://locopage.railpage.org.au/sra/421.html. Retrieved 2008-04-10.
- New South Wales Rail System Locomotives. Sydney: Archives Section, State Rail Authority of New South Wales. 1984.
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