New South Wales 72 class locomotive
| New South Wales 72 class | |
|---|---|
|
7201 at Port Botany in 1965 | |
| Type and origin | |
| Power type | Diesel-hydraulic |
| Builder | Chullora Railway Workshops |
| Serial number | 9 |
| Build date | 1965 |
| Total produced | 1 |
| Specifications | |
| UIC classification | Bo-Bo |
| Gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Wheel diameter | 37 in (940 mm) |
| Length |
Over coupler pulling faces: 45 ft 2 1⁄4 in (13.77 m) |
| Width | 9 ft 2 in (2.79 m) |
| Height | 12 ft 7 1⁄4 in (3.84 m) |
| Locomotive weight | 55 long tons 0 cwt (123,200 lb or 55.9 t) |
| Fuel type | Diesel |
| Fuel capacity | 500 imp gal (2,300 l; 600 US gal) |
| Lubricant capacity |
Engine: 20 imp gal (91 l; 24 US gal), Transmission: 40 imp gal (180 l; 48 US gal), Final Drives: 6 imp gal (27 l; 7.2 US gal) each |
| Coolant capacity | 180 imp gal (820 l; 220 US gal) |
| Sandbox capacity | 12 cu ft (0.34 m3) |
| Prime mover | Cummins VT12-825-BI |
| Engine RPM range | 600-2000 |
| Engine type | Four-stroke diesel |
| Aspiration | Turbocharged |
| Cylinders | V12 |
| Cylinder size | 5.5 in × 6 in (140 mm × 152 mm) |
| Transmission | Clark Model 16420 Reversing |
| Performance figures | |
| Maximum speed | 45 mph (72 km/h) |
| Power output |
Gross: 705 hp (530 kW), For traction: 640 hp (477 kW) |
| Tractive effort |
Continuous: 32,500 lbf (144.57 kN) at 5 mph (8 km/h) |
| Career | |
| Operator(s) | New South Wales Government Railways |
| Number in class | 1 |
| Number(s) | 7201 |
| First run | 27 August 1965 |
| Last run | 2 March 1976 |
| Withdrawn | August 1976 |
| Scrapped | December 1976 |
| Disposition | Scrapped |
The 72 class was a class of diesel locomotive built by Chullora Railway Workshops for the New South Wales Government Railways in 1965.
Construction
Locomotive 7201 was a diesel-hydraulic locomotive, with B-B wheel arrangement. Built in the New South Wales Government Railways Water Supply Workshops at Chullora, it performed its first light engine trial on 27 August 1965.[1] It was built on the lengthened underframe of an unused 58 class locomotive tender, but using the bogies from a Standard Goods locomotive[2] turret tender. The cab was similar to that of an X200 class and the livery was similar to a 48 class.
The prime-mover was a Cummins VT 12-825-BI; V12 engine, developing 640 horsepower at 2,000 rpm. Power was distributed to the bogies through a Clark C 16911 torque converter with Clark 16421 transmission.[3]
Operations
Following some modifications, it entered service on 8 September 1965 as a shunter at Cooks River Goods Yard. Over the next 6 months, it spent time shunting in yards at Goulburn, Junee, Broadmeadow and Werris Creek. It even had a brief sojourn on the Yass Tramway. During this time, it re-entered the workshops for modifications and repairs. After this initial period, it spent extended periods at the Rozelle yards, however by 1970 it was regularly struggling with the loads. It was then trialed at the ACDEP carriage sheds where it shunted the carriages from air-conditioned carriages. It was deemed a success in this duty and remained there until 2 March 1976 when it suffered a seized engine.
Demise
Being a one-off and therefore non-standard, the decision was made not to repair the locomotive. On 4 August 1976 it was condemned and scrapped in December that year.[4]
References
Further reading
- New South Wales Rail System Locomotives. Sydney: Archives Section, State Rail Authority of New South Wales. 1984.
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