Tube underground track

Discussion in 'Permanent Way' started by Tim Watson, 29 August 2020.

  1. Arun

    Arun Western Thunderer

    As far as I am aware, the definitive work [available to the public] on how the Underground system was built [both surface and deep tube lines] in great detail is "Building London's Underground" by Antony Badsey-Ellis published in 2016. Well worth a read.
    Regarding the deviations around Bank, John C Gillham's "Waterloo and City Railway" gives exhaustive chapter and verse. Again highly readable.
     
  2. simond

    simond Western Thunderer

    I believe it was the case that the property owners rights hypothetically extended to the centre of the earth, however IIRC there was some change in the law a few years back to facilitate fracking, which involves horizontal drilling, and I think it is no longer the case. It now appears that fracking has gone the way of 405 lines, hopefully.

    I think I’d be a bit hacked off if there were a gazillion quid’s worth of gold under my garden, and the neighbour dug it out and profited mightily, and I didn’t. And I like my neighbours!

    Atb
    Simon
     
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  3. Chris Veitch

    Chris Veitch Active Member

    Does anyone have any comments on The Birth of The Tubes by the same author (but much more recent)? Looks like a very interesting account of the early lines but there's not much indication of what the content is like.
     
    Last edited: 5 September 2020
  4. Arun

    Arun Western Thunderer

    In your shoes Peter, I would write to Sam Mullins the LT Museum director and enclose a couple of jpgs of your paintings and say you'd like to do some more of particular topics. Sam would probably agree and give you a point of contact.
    As a life member of Friends of the LTM, I've never had any problems getting access to the Museum reserve store [The Depot] to measure up road/rail vehicles or static bit of street furniture. Having some known activity as a designer of 7mm LT road and rail vehicles does give some credibility and in turn, to date, the LTM takes me more seriously than someone with no track record asking for access.
     
    Last edited: 5 September 2020
  5. Arun

    Arun Western Thunderer

    Regarding the wriggly nature of deep tube lines - and subsurface ones for that matter, LT did produce a map which still regularly turns up at transport flea markets. The map is called "London" and covers an area from Rickmansworth in the NW to Theydon Bois in the NE to Weybridge in the SW to Eynsford in the SE
    I've attached a picture of the cover and a sample pic of the centre area of the map. Note that this edition predates the Victoria and subsequent lines. A later version of this map formed an interesting plot in a novel some years ago regarding whether or not the route of the Victoria Line South of Green Park (to Victoria) had a spur which allowed escalator access from Buckingham Palace in extremis!

    img024.jpg img025.jpg
     
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  6. Tim Watson

    Tim Watson Western Thunderer

    Richard Wilson has mocked up the tube tunnel rings as a 3D print, which will save a vast amount of work and be very robust. The distance between rings is currently 30” - it should be 18-23”, but that will be modified in production. The different diameters for the crossing tunnel civil engineering can also be made as required.
    [​IMG]
    [​IMG]
    The tunnel bore is generous on size, but that will be important for dynamic tolerances and it could also allow an N gauge tube train to pass, should one ever be manufactured.
    [​IMG]
    The train in the image is sitting on a piece of fully sleepered track, but the production track will be more nearly flush ballasted and the cement infill in the lower part of the rings will also be included in the 3D print. I think it is fair to say that without the availability of CAD and modern manufacturing techniques, this line would be very much harder to make! It is also quite gratifying to bring all the modern techniques to bear on a 35 year old layout.

    Tim
     
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