Class 25 Profile

British Railways Type 2

This fleet of Type 2 locomotives were a subsequent build of the successful Class 24 1,160hp locomotives, of which the first 20 were ordered by the British Transport Commission under the British Railways 1955 Modernisation Plan. This build, introduced in April 1961, had detailed modifications and different internal equipment with the engine developing 1,250hp. Two different body designs were built, the latter design having a larger central cab window and many of the side grills being moved to the roof. Twelve locos were converted to Class 25/9 in the period November 1985 to January 1986. The first loco withdrawn was 25045 (D5195) in October 1975. The last locos of the class were withdrawn in March 1987.

BUILT:
D5151-D5185, D5223-D5232, D7578-D7597 1961-64 by British Railways Darlington Works.
D5186-D5222, D5233-D5299, D7500-D7577, D7598-D7623, D7660-D7677 1963-67 by British Railways Derby Works.
D7624-D7659 1965-66 by Beyer, Peacock & Company Ltd.
Total Built 327

ENGINE: Sulzer 6LDA28B 1,250hp.

NUMBER SERIES: 25001-25327.

PREVIOUS NUMBERS: D5150-D5299, D7500-D7677.

TRANSMISSION:

MAX SPEED: 90mph.

TRACTIVE EFFORT: 45,000lb.

WEIGHT: 73 tons.

WHEEL ARRANGEMENT: Bo-Bo 3'7" diameter.

FLEET STRENGTH: NIL (All Withdrawn - Some Preserved)

Data taken from the PC TOPS Locomotive Database System by Milburn Associates
Unless stated otherwise Photographs in this section are © copyright of Milburn Associates. Permission to use these images in railway society newsletters, etc., can be obtained by e-mailing the Thin Controller.

[JPEG Image of D5224 size 20K]

Class 25 D5224 stands in the yard at Darlington Works brand new in July 1963 in British Railways Green Livery. This was the last batch of locos built with the original body design.

[JPEG Image of D5244 size 21K]

Class 25 D5244 in British Railways Two Tone Green Livery at York. This was one of the first batch of locos built with the new body design.

Last revised: 30 November1998