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    UKP: GWR 5101

    Steam loco

    5101 Class 2-6-2T 'Large Prairie'

    The GWR 5101 Class or 'Large Prairie' is a class of 2-6-2T steam locomotives of the Great Western Railway. The 5101 Class were medium-sized tank engines used for suburban and local passenger services all over the Great Western Railway system. The class was an updated version, by Collett, of Churchward's 1903 3100/5100 Class.

    The original 40 members of the 3100 class were renumbered 5100 and 5111 to 5149 in 1927. The first batches of 5101s filled in the numbers 5101 to 5110 and extended the class from 5150 to 5189. They were little changed from the Churchward locomotives as they then were but had an increased axle loading of 17 long tons 12 cwt (39,400 lb or 17.9 t); the maximum permitted for the ‘Blue’ route availability. Bunkers were of the standard Collett design with greater coal capacity. The 5100 number series was exhausted in 1934, and further new locomotives were numbered from 4100. The last 20 were built after nationalisation.

    140 were built, 8 are preserved plus 1 used for spares and another converted into a tender engine.

    Diagram Lots 257, 259, 284, 292, 313, 323, 335, 361, 369
    Length 41ft
    Introduced 1929
    Withdrawn 1965
    Wheel Arrangement 2-6-2T
    Builder GWR Swindon Works
    TE 24,300 lbf
    Driving Wheel Dia 5ft 8in
    Boiler Pressure 200 psi
    Num Cylinders 2
    Cylinder Dimensions 18in x 30in

    Photo: Dan Cardwell

    Number Status Note Livery Depot Pool Base Owner
    4110 O PR East Somerset Railway PRE
    4115 S for use with 4700 project Barry Tourist Railway
    4121 S TM Tyseley Locomotive Works PRE
    4141 A GRN PR Epping & Ongar Railway PRE
    4144 P GRN MBSL Didcot Railway Centre PRE
    4150 R PR Severn Valley Railway PRE
    4160 P PR South Devon Railway PRE
    5164 A GRN BH Barrow Hill PRE
    5199 A on loan from Llangollen Railway GRN PR West Somerset Railway PRE