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    UKP: BR Steam: 7MT

    Steam loco

    Std class 7MT 'Britannia'

    The BR Standard Class 7, otherwise known as the Britannia Class, is a class of 4-6-2 Pacific steam locomotive designed under Robert Riddles for use by British Railways for mixed-traffic duties. 55 were constructed between 1951 and 1954. The design employed results from the 1948 locomotive exchanges undertaken in advance of further locomotive classes being constructed. Three batches were constructed at Crewe Works, before the publication of the 1955 Modernisation Plan.

    The Britannia Class design was based on best practice from the pre-nationalisation railway companies in terms of operating efficiency and lower maintenance costs; various weight-saving measures also increased the route availability of a Pacific-type locomotive on the British Railways network. The Britannias received a positive reception from their crews, with those regularly operating the locomotives giving them favourable reports as regards performance.

    2 have been preserved.

    Builder BR Crewe
    Introduced 1951
    TE 32,160lbf
    Driving Wheel Dia 6ft 2in
    Wheel Arrangement 4-6-2
    Boiler Pressure 250 psi
    Cylinder Dimensions 20 in × 28 in
    Num Cylinders 2, outside
    Valve Gear Walschaerts
    Length 68ft 9in
    Width 8ft 8 3/4in
    Height 13ft 1/2in
    Withdrawn 1968
    Weight 96t
    Max Speed 90 mph
    Number Altnumber Name Status Note Livery Depot Pool Base Owner
    70000 98700   Britannia A Royal Scot Locomotive & General Trust GRN CL LSLO Locomotive Services, Crewe PRE
    70013 98713   Oliver Cromwell O GRN PR MBSL Great Central Railway NRM