Transport of Delight

Diesel locomotives - Class 31

Class 31 was the second class to appear under the 1955 Modernisation
Plan, D5500 entering service in October 1957. Between then and 1962,
263 locomotives were built, originally numbered D5500-5699, D5800-62.

Built by Brush Traction at Loughborough, the class was a Type 3 A1A-A1A
fitted with a Mirrlees JVS12T engine. The first 20 units were rated at 1250 hp
and at 1365 hp after that as standard, although one locomotive ran
experimentally for a period fitted with a 2000 hp power unit.

Following fatigue problems in the mid-1960s, the whole class was
progessively re-equipped with EE 12SVT engines rated at 1470 hp.
Many have now been withdrawn although a small number remain
active, including use on passenger services in 2009.

As of 28/11/09, there are 14 photographs in this section.

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Photographs © Geoff Bannister 2007
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Unidentified Potters Bar
9 September 1961

Unidentified Potters Bar
9 September 1961

Loco and date unknown
Stratford


31106 Newport
21 February 2003

31125 Toton
15 February 1992

31145 and 31427
Toton 24 July 1993


31191 Stratford
25 October 1990

31196 Stratford
25 October 1990

31250 Stratford
9 September 1993


31452
Toton Rail Fair
29 August 1998

31452
Minehead
Date unknown

31468 Newport
21 February 2003


31468 Newport
21 February 2003

Preserved D5500 and D5580
Toton Rail Fair
29 August 1998

Photographs © Geoff Bannister 2007
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