Class 24 and class 25 diesels.

MyLoveOfRailways
MyLoveOfRailways
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Published 2018-11-14
The British Railways class 24 diesel locomotives, also known as the Sulzer Type 2 or BR type 2, were built from 1958 to 1961. One hundred and fifty-one of these locomotives were built at Derby, Crewe and Darlington, the first twenty of them as part of the British Railways 1955 Modernisation Plan. They had a power rating of 1160 bhp.

The original locomotives had disk headcodes, later ones had the 4-character roof box displays.

The class was developed into the class 25 locos with an increase in power to 1250 bhp and a top speed of 90 mph compared to the class 24's. The first class 25's had a more angular roof headcode box compared to the class 24's and originally retained the communication doors on the front, but this was removed in later builds resulting in 3 large windows at the fronts. Both classes were affectionately known as 'rats'.

In this video we see preserved examples of class 24 and 25 locos, mainly on the North Yorkshire Moors Railway, but also an earlier version of the class 25 on the North Norfolk Railway.

Only 1 loco is main line registered (D7628) and this is limited to the line into Whitby from the North Yorkshire Moors Railway.
All Comments (16)
  • @AndreA-ke2id
    Arguably the best 'chugging' diesel sound ever. Real shame there are none certified for mainline running.
  • @OlafProt
    Never seen a 24 in the flesh. Maybe one day!
  • @JohnPW22
    A mighty fine selection of classic 24 and 25 footage! Loved it!
  • @kyle123481
    Fantastic Video! Brillant Footage! -Kyle
  • @Shelfandtabletoplayouts00gauge
    Along with the class 40s got to be up there. Unfortunately a bit like the dinosaurs but just as popular👍 Thanks for the upload.
  • @spiccybaby
    There was for many years, up to the early 1960's, a daily Birkenhead-Kent Coast service which ran via Reading-Redhill-Tonbridge and which used 24's on that section during a couple of summers (the steam heating boilers had to be removed to meet weight limits).
  • @bmwnasher
    Love the sound as a kid in 60s, Sulzer Engine?
  • @class37clag22
    Such emotive sounds. Can we slow down a 68 to 750 rpm and see how it sounds?
  • @justinobrien3593
    I love rats ain't seen any for a long time but I love the sound of there engines at thrash speed!!!😁