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    UKP: BR Diesel: 42

    Diesel Loco

    Class 42 Warship

    The British Rail Class 42 Warship diesel-hydraulic locomotives were introduced in 1958. It was apparent at that time that the largest centre of expertise on diesel-hydraulic locomotives was in West Germany. The Western Region of British Railways negotiated a licence with German manufacturers to scale down the German Federal Railway's "V200" design to suit the smaller loading gauge of the British network, and to allow British manufacturers to construct the new locomotives. The resultant design bears a close resemblance, both cosmetically and in the engineering employed, to the original V200 design.

    Warship locomotives were divided into two batches: those built at BR's Swindon works were numbered in the series D800-D832 and D866-D870, had a maximum tractive effort of 52,400 pounds-force (233,000 N) and eventually became British Rail Class 42. 33 others, D833–D865, were constructed by the North British Locomotive Company and became British Rail Class 43. They were allocated to Bristol Bath Road, Plymouth Laira, Newton Abbot and Old Oak Common.

    Two Class 42s are preserved, D821 and D832

    Gauge 1435mm
    Builder BR Swindon
    Max Speed 90mph
    Introduced 1958-61
    Length 18290mm
    Width 2690mm
    Height 3670mm
    Weight 79.3t
    Engine Maybach MD650
    Transmission Mekydro Hydraulic
    Power 772kW/846kW X2
    TE 214kN
    Driving Wheel Dia 1003mm
    Wheelbase 14710mm
    Wheel Arrangement Bo-Bo
    Withdrawn 1972

    Photo: John J Cordrey

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    Number Alt number Name Status Pool Depot Note
    D821 89421 Greyhound P MBDL KR
    D832 89432 Onslaught P BQ