- List of British Rail unbuilt locomotive classes
There have been a number of
TOPS class numbers assigned to proposedlocomotives 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. No prototype model was ever produced.
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 second 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 for a new class of freight locomotive in the mid 1980s.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.
*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 forliner trains .Electro-diesel locomotives
*Class 75 - Spare classification for projected "super electro-diesel" follow on from Class 73 and Class 74.
Electric locomotives
*Class 88 - Proposed electric version of the Class 58, powered through 25 kV AC from
overhead wire .
*Class 93 - Proposed electric locomotive for use on theWest Coast Main Line as part of theInterCity 250 project.External links
* [http://www.therailwaycentre.com/Resource_data/All%20Time%20class%20Loco.pdf UK Traction Classification - Locomotives]
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