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The History of First Generation DMUs


The Railcar website provides information on the British Railways first generation DMUs (a.k.a. diesel multiple units / railcars) introduced in the 1950s.

The content of this website

The six key sections of the website are:

  • Types - looks at each type of DMU in detail
  • Topics - features articles on different aspects of the vehicles and personal recollections
  • Technology - describes the technical details of how they work
  • Data - various lists of numerical details
  • Images - galleries featuring DMUs
  • In Print - details the books and other printed materials made available over the years that have relevance

Details of railcars in preservation can be found on The Railcar Association website.


Date on DMUs

Vehicle / Set Data

To view details of a particular vehicle or set enter the number below:

       

DMU Images Wanted!

Do you have photos of First Generation DMUs? The more images we have the better we can tell the DMU story and make it more useful to visitors. Images can be loaded directly onto the site - just register as a user and upload! Alternatively if you have images on flickr or another website I can do the uploads for you - just let me know.


Scope

This website contains details about the First Generation DMUs. This includes the 4-wheel diesel railbuses, ACV / BUT railcars, the Battery Multiple Unit (BMU) and Blue Pullmans. It covers the period from their introduction to British Railways in the 1950s till their withdrawal and disposal from main-line use, but NOT preservation.

Because of the vast amount of data that this covers and the amount of information I have still to process I cannot include the DEMUs introduced on the Southern Region in the same era, nor Second Generation or later types.


Updates

June 7th

A new page has been added to the Class 104 section looking at their time on the North Eastern Region.

May 31st

Some more operation/timetable pages have been started: Norwich - Dereham - Wells; Machynlleth - Pwllheli; Whitby - Malton; Kilmarnock - Ayr; and Reading - Gatwick Airport.

May 24th

Some more fault finding documents have been added: Eastern Region, 1968 (3mb PDF); Scottish Region sheets from 1973 (0.6mb PDF) and circa late 1970s (0.6mb PDF); from unknown origins are a double-sided sheet from the 1980s (0.5mb PDF), and a sheet dealing with blown 6 & 7 fuses.

April 26th

Added is a BR booklet dated 1959 listing all the brakework items along with part and drawing numbers, for Craven built diesel railcars. Download PDF (11mb pdf).

April 19th

Some more operation/timetable pages have been started: Ely - March - Peterborough; Manchester - Llandudno; Leeds - Micklefield; Elgin - Keith Junction and Cairnie Junction; and Birmingham - Great Malvern.

April 12th

Three more fault finding booklets have been added: Eastern Region, 1967 (3mb PDF), Scottish Region, 1967 (1.1mb PDF), and Western Region, 1967 (4.9mb PDF).

Latest Images:

blue-pullman DMU at Unknown

A Western Region diesel Pullman set, date/location unknown. Stuart Mackay Collection.

unknown DMU at Pont Llanio

The Branch Line Society/Wirral Railway Circle Milk Branches railtour at Pont Llanio on 12 September 1970. The power car closest on the Swindon Cross-Country set should be W50732. Stuart Mackay Collection.

108 DMU at Unknown

No details came with this slide, showing a Class 108 DMU about to go through a washing plant. Stuart Mackay Collection.

121 DMU at Windsor & Eton Central

Class 121s W55024 (L124) and W56286 (L286) entering Windsor and Eton Central on 23 June 1979. Stuart Mackay Collection.

101 DMU at Stirling

Met-Camm DMU set 101329, SC51455 closest, at Stirling on 25 May 1986. Stuart Mackay Collection.

View More Recent Images...

On This Day:

101 DMU at Nechells

E51438 leads the 08:52 Cambridge to Birmingham New Street at Nechells at 12:37 on Friday 8 June 1984. Its partner is presumably E54065. Stuart Mackay Collection.

123 DMU at Huddersfield

A Class 123 set departs from Huddersfield on June 8, 1979, with DMBS 52089 on the rear. Malcolm Clements.

104 DMU at Newton Heath

Withdrawn M53511 (N672) at Newton Heath on the 8th June 1990. In the background is Class 101 51227 and fire damaged Class 104 53487. Nicholas Youngman.

118 DMU at St Ives

Plymouth Laira based class 118 DMU, unit P463 (presumably 51320 + 59472 + 51305), seen leaving St. Ives on 8th June 1984. Bob Belcher.

116 DMU at Southminster

A class 116 unit at the end of the Essex branch to Southminster on 8th June 1985. Ian Buck.