About: British Rail Class 129   Sponge Permalink

An Entity of Type : dbkwik:resource/kx5R2XfJQ-HI-rdH5u9J_g==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

One unit, M55997, was converted as a test bed for hydrostatic drive in 1980, was renumbered RDB 975385, and named Laboratory 9 ‘Hydra’. It was fitted hydrostatic transmission having the normal Leyland 680 six cylinder engine driving two Rexroth Hydramatic axial piston pumps. Each pump supplied fluid to a Volvo fixed displacement compact axle-end motor which drove the axle directly. The maximum system pressure was in the order of . This arrangement was only fitted to one bogie, the other one retaining its normal drive but with the cardan shaft disconnected.

  • Single car:
    • AttributesValues
    rdf:type
    rdfs:label
    • British Rail Class 129
    rdfs:comment
    • One unit, M55997, was converted as a test bed for hydrostatic drive in 1980, was renumbered RDB 975385, and named Laboratory 9 ‘Hydra’. It was fitted hydrostatic transmission having the normal Leyland 680 six cylinder engine driving two Rexroth Hydramatic axial piston pumps. Each pump supplied fluid to a Volvo fixed displacement compact axle-end motor which drove the axle directly. The maximum system pressure was in the order of . This arrangement was only fitted to one bogie, the other one retaining its normal drive but with the cardan shaft disconnected.
    sameAs
    numberbuilt
    • 3(xsd:integer)
    dcterms:subject
    dbkwik:uk-transpor...iPageUsesTemplate
    dbkwik:uktransport...iPageUsesTemplate
    doors
    • Slam
    multipleworking
    • ♦ Yellow Diamond
    ordernumber
    • 30418(xsd:integer)
    Service
    • 1955(xsd:integer)
    Brakes
    • Vacuum
    Name
    • British Rail Class 129
    fleetnumbers
    • 55997(xsd:integer)
    numberscrapped
    • All
    Manufacturer
    Capacity
    • Luggage space only
    diagram
    • BR531
    Operator
    yearservice
    • 1958(xsd:integer)
    Background
    • #0033cc;color:white;
    Engine
    • 2(xsd:integer)
    coupling
    abstract
    • One unit, M55997, was converted as a test bed for hydrostatic drive in 1980, was renumbered RDB 975385, and named Laboratory 9 ‘Hydra’. It was fitted hydrostatic transmission having the normal Leyland 680 six cylinder engine driving two Rexroth Hydramatic axial piston pumps. Each pump supplied fluid to a Volvo fixed displacement compact axle-end motor which drove the axle directly. The maximum system pressure was in the order of . This arrangement was only fitted to one bogie, the other one retaining its normal drive but with the cardan shaft disconnected. The unit was finally scrapped by Vic Berry at Leicester.
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