LMS Turbomotive details

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LMS Turbomotive details

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  • #199845
    martin ranson 2
    Participant
      @martinranson2

      In issue 4514 starting on page 252 there is a general description of a turbine locomotive … what a wonderful machine … Mr Jeggli criticises himself on the last page of the article … I think he deserves total praise … if anyone else looks carefully at the published photos they would realise he has incorporated a lot of very clever systems into the model … all home-made I assume … is there any way he could be persuaded to add some details of various parts of the loco ??

      Shown in photos 20 to 23 is the burner module with all its parts … the burner itself looks tiny as regards overall length measured from the 2 inlet pipes to the burning surface … this seems to be gauze and not ceramic … clever !! looking at photo 21 this shows the steam pressure diaphragm valve removed from its location … it is tiny !! … what may be the adjusting spring is only just over one turn … the ones I have previously made have usually been at least 10 mm in length and equipped with 2 locknuts.

      The water pump has its own built-in guide for the ram and the pump body looks as if it swings the 2 water pipes as it moves … neat and space-saving !!

      Please Mr Jeggli, any chance of publishing any details in the magazine ??

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      #24024
      martin ranson 2
      Participant
        @martinranson2

        Article from Mr. Werner Jeggli

        #199848
        Neil Wyatt
        Moderator
          @neilwyatt

          There was a very successful locomotive 'Turbo' in 5" (I think) gauge – that was very capable of passenger hauling – the turbines are much more capable of delivering power in the somewhat larger size.

          If I were to try my hand at such a thing, I think I'd be tempted to try a Tesla turbine, but the real challenge with any turbine loco is the drive train and Mr Jeggli is to be congratulated on getting one to work in G1 where I'm sure he is battling against many scale effects.

          Neil

          #200112
          Ady1
          Participant
            @ady1

            There's a video of a model turbomotive here

            You get a real sense of that smooth powertrain system in action compared to the jerky cylinders of a standard steam powertrain

            #200145
            Neil Wyatt
            Moderator
              @neilwyatt

              That's Werner Jeggli's model as featured in ME.

              #200182
              Jeff Dayman
              Participant
                @jeffdayman43397

                Beautiful job by Mr Jeggli. What a great locomotive!

                #200193
                Ady1
                Participant
                  @ady1

                  There are various sources for details Graces.co.uk for example

                  These are from 7th july 1935

                  turbomotive1.jpg

                  turbomotive2.jpg

                  turbomotive3.jpg

                  #200194
                  Ady1
                  Participant
                    @ady1

                    page 12 (as referred) full citroen herringbone gearing

                    turbomotive4.jpg

                     

                    Edited By Ady1 on 13/08/2015 01:13:29

                    #200195
                    Ady1
                    Participant
                      @ady1

                      You can pull over 100 years of British engineering from Graces

                      With no cylinders in the way, that loco really looks the biz.

                      Edited By Ady1 on 13/08/2015 01:05:54

                      #200204
                      Eric Cox
                      Participant
                        @ericcox50497

                        If the boiler tubes of larger scale locomotives allow it., I'm surprised than nobody has fitted turbulators to improve thermal efficiency. It might even help win IMLEC !.

                        #200212
                        Michael Gilligan
                        Participant
                          @michaelgilligan61133

                          What a fantastic gear-train !!

                          Thanks for posting the pages, Ady

                          MichaelG.

                          #200301
                          Cyril Bonnett
                          Participant
                            @cyrilbonnett24790
                            #200303
                            Michael Gilligan
                            Participant
                              @michaelgilligan61133

                              Thanks for the link, Cyril

                              … I note that the film is dated 1924

                              MichaelG.

                              #200340
                              Cyril Bonnett
                              Participant
                                @cyrilbonnett24790

                                Michael

                                This link on youtube of the same clip is much clearer.

                                **LINK**

                                Cyril

                                #200348
                                Werner Jeggli
                                Participant
                                  @wernerjeggli14222

                                  Thank you gentlemen for your interrest in my project.

                                  Martin, about further descriptions of constructional details – I'll see what I can do.

                                  Neil, Tesla turbine – I've been there. See ME Nr. 4281. I found, that the Tesla power output is definitely inferior to the impulse turbine one!

                                  Werner

                                  #200693
                                  Cyril Bonnett
                                  Participant
                                    @cyrilbonnett24790

                                    More turbines

                                    **LINK**

                                    #201186
                                    Werner Jeggli
                                    Participant
                                      @wernerjeggli14222

                                      A group of Swiss G1MRA members will tour the south of England by coach and with their engines. On Saturday September 19 we will visit the Didcot Railway Centre, Oxfordshire. I'll take the Turbomotive along. The museum does not have a gauge one track. But I will be able to live steam operate the locomotive on a rolling road. This will be from 13.30h to 14.30h. I hope, there will be interested visitors. I'd be delighted to have technical discussions there. Does anybody lives close enough to make it?

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