List_of_British_Rail_unbuilt_locomotive_classes

List of British Rail unbuilt locomotive classes

List of British Rail unbuilt locomotive classes

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There have been a number of TOPS class numbers assigned to proposed locomotives in the UK that have not been built for one reason or another.

Diesel locomotives

Type 1 locomotives

  • Class 18 – A proposed new Type 1 locomotive proposed in the mid 1980s. A 1988 proposal was for a 6-wheeled 800 hp locomotive with a maximum speed of 50 mph, similar in concept to Class 14.[1] No prototype was constructed.

Type 3 locomotives

  • Class 38 – Projected classification for new generation of Type 3 freight locomotives in the 1980s. The Class 38 was dropped in favour of the Class 60.

Type 4 locomotives

  • Class 41 – The third use of Class 41 was for a proposed class of Class 60 locomotives with 2,500 hp engines in the early 1990s.
  • Class 48 – The second use of Class 48 was a proposal for a new class of locomotive for the 1990s, with gearing differences for slower freight work or higher speed loco-hauled for InterCity or parcels trains. The proposal included using proven technology for engines and electrical systems to avoid lengthy introduction and development costs associated with developing new technology.

Type 5 locomotives

  • Class 51 – Projected classification for the proposed "Super Deltic" locomotive intended as a follow on from the Class 50 and Class 55.[2][3][4][5]
  • Class 62 – Projected classification for proposed Type 5 coal train locomotives in the early 1990s.
  • Class 65 – Projected classification for proposed 4,000 hp freight working locomotive intended for liner trains.

Electro-diesel locomotives

  • Class 75 – Spare classification for projected "super electro-diesel" follow on from Class 73 and Class 74.

Electric locomotives

References

  1. [1]
    Locomotive Rivals from Across the Pond. D. Clough. Rail (magazine), issue 805, Jul-Aug 2016.
  2. [2]
    Haresnape, Brian (June 1984) [1982]. 3: Production Diesel-Electrics Types 4 and 5. British Rail Fleet Survey (2nd ed.). Shepperton: Ian Allan. p. 6. ISBN 0-7110-1450-7. CX/0684.
  3. [3]
    Allen (1981), p. 19
  4. [4]
    Webb (1982), p. 91
  5. [5]
    Nock 1985, p. 75

Sources
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