Queensland Railways 1620 class

The 1620 class was a class of diesel locomotives built by English Electric, Rocklea for Queensland Railways between 1967 and 1969.

Queensland Railways 1620 class
1634 at Wowan in August 1987
Type and origin
Power typeDiesel-electric
BuilderEnglish Electric, Rocklea
Build date1967-1969
Total produced34
Specifications
Configuration:
  UICCo-Co
Gauge1,067 mm (3 ft 6 in)
Length13.84 m (45 ft 5 in)
Loco weight63 t (62 long tons; 69 short tons)
Fuel typeDiesel
Prime moverEnglish Electric 6CSRKT mark 2
Engine typefour stroke, four valves per cylinder
Aspirationturbo, intercooled
GeneratorEnglish Electric 827
Traction motorsEnglish Electric 540
Cylinders6
Cylinder size10in by 12in
MU working110V, stepless electro-pneumatic throttle
Loco brakestraight air
Train brakesair
Performance figures
Maximum speed80 km/h (50 mph)
Power output755 kW (1,012 hp) gross
Career
OperatorsQueensland Railways
Number in class34
Numbers1620-1653
First run1967
Preserved1620, 1632, 1639. 1649, 1650, 1651
Disposition6 preserved, 10 exported, 18 scrapped

The 1620 class locomotives are similar to the New Zealand Railways DI class, also built at the Rocklea works.

History

The 1620 class was an evolution of the 1600 class being fitted with a hood nose. They operated in Central and North Queensland as well as hauling commuter trains in Brisbane.[1][2][3] The class was withdrawn in the mid 1990s with some sold to John Holland and exported to Malaysia and The Philippines.[4][5]

1647 has been recently noted to still be in use with Lafarge cement at Padang Jawa, near Kuala Lumpur, Malaysia

Six have been preserved:[2]

Status table of preserved locomotives

Number In service Withdrawn Owner Location Notes
1620 01/1967 1991 QR Heritage Ipswich Workshops Stored pending complete rewiring of electrical systems. Unlikely to be operational for the foreseeable future.
1632 07/1967 1991 Mary Valley Rattler Gympie Operational. Used as a replacement when a steam locomotive is not available.
1639 10/1967 1991 Mary Valley Rattler Gympie Stored in Gympie Yard as a source for spare parts.
1649 02/1969 1991 Mary Valley Rattler Gympie Stored in Gympie Yard as a source for spare parts.
1650 03/1969 1991 QR Heritage Ipswich Workshops Donated to QR Hertiage by ARHS(QLD). Stored in good condition awaiting completion of a restoration initiated by the previous custodian.
1651 03/1969 1991 QR Heritage Ipswich Workshops Donated to QR Hertiage by ARHS(QLD). Used as a source for spare parts.
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References

  1. Oberg, Leon (1984). Locomotives of Australia 1850s-1980s. Frenchs Forest: Reed Books. p. 240. ISBN 0 730100 05 7.
  2. 1600, 1620 Class Queensland's Great Trains
  3. English Electric 1620 Class Queensland's Railway Interest Group
  4. "QR Clydes to NZ, 'Poms' to Philippines [sic]" Railway Digest October 1995 page 15
  5. The John Holland 1620s! Philippine Railway Historical Society
1648 and a 1720 class at Caboolture in 1989
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