| 620/720 class railcars | |
|---|---|
 621/721 at Rail Motor Society | |
 Interior of a 620/720 carriage | |
| Manufacturer | New South Wales Government Railways |
| Built at | Chullora Railway Workshops |
| Constructed | 1961–1968 |
| Entered service | 1961–2007 |
| Number built | 36 vehicles (18 two-car units) |
| Number in service | 1 (car 726)[1] |
| Number preserved | 21 |
| Formation | 1 power car, 1 driving trailer car |
| Fleet numbers | 621/721 - 638/738 |
| Operators | CityRail |
| Specifications | |
| Car body construction | Aluminium body on steel underframe |
| Car length | 18.67 m (61 ft 3 in) |
| Width | 2.97 m (9 ft 9 in) |
| Maximum speed | 115 km/h (71 mph) |
| Traction system | Diesel-hydraulic |
| Prime mover(s) | Rolls-Royce C8SFLH, 250 hp / GM Detroit Diesel 6/110, 250 bhp / Cummins NHHRTO-6-B1, 265 hp / Cummins NTA-855-R2, 300 hp / Cummins NTA-855-R4, 335 hp |
| Power output | 500 hp (373 kW) (250 hp (186 kW) x 2); 530 hp (395 kW) (265 hp (198 kW) x 2); 600 hp (447 kW) (300 hp (224 kW) x 2); 670 hp (500 kW) (335 hp (250 kW) x 2) |
| Transmission | Automatic lockup torque converter |
| Power supply | 24 V DC |
| Braking system(s) | S.E.M. electro-pneumatic straight air with emergency feature, handbrake |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
The 620/720 class railcars were a class of diesel multiple unit built by the New South Wales Government Railways and operated from 1961 until 2007.
- ^ "Byron Bay Train » History". Byron Bay Train. Retrieved 26 November 2019.
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