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GWR Small Prairie 5inch model

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GWR Small Prairie 5inch model

Home › Forums › Locomotives › GWR Small Prairie 5inch model

Viewing 9 posts - 1 through 9 (of 9 total)
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  • 22 December 2011 at 13:59 #80265
    Stephen Lawson
    Participant
      @stephenlawson35167

      The Liskeard Model Society have taken on the task of refurbishing a 5 inch gauge GWR 45 class (Small Prairie). Several problems have been solved but one which we are would like some advice on concerns the regulator. It appears to be seized. There is no steam dome as such but the regulator looks to be fitted in the smoke box. Are we right ? How should we go about accessing it ? Is it necessary to remove the superheaters ? Any communication would be appreciated. Regards Steve Lawson

      22 December 2011 at 13:59 #1061
      Stephen Lawson
      Participant
        @stephenlawson35167

        Regulator seized

        22 December 2011 at 14:30 #80267
        John Baguley
        Participant
          @johnbaguley78655
          Hi Steve,
           
          Is it Firefly to the Martin Evan’s design? If so, the regulator is a simple internal screw down type fitted from the backhead. To remove though you will have to remove the superheaters and the header bush that screws into the front tube plate – the steam pipe from the regulator also screws into this, hence the need to remove it. Have you tried steaming the loco yet? Screw down regulators are notorius for locking up if you let the boiler go cold without opening it slightly. It may free up again when the boiler is hot.
           
          John
          22 December 2011 at 17:02 #80275
          Stephen Lawson
          Participant
            @stephenlawson35167
            Many thanks for your reply John. Yes, we think it is Firefly to the Martin Evan’s design. Personally, I am not familiar with “simple internal screw-down” regulator. If anyone is able to supply further info or a reference to location of info I would be very grateful. Drawings would be great but expensive to purchase.
            We have not tried to steam the engine yet, just trying to sort out the obvious problems first. However John, on your recomendation, it would appear the thing to do. Watch this space !
             
            Thanks again
             
            Steve
            22 December 2011 at 17:44 #80278
            John Baguley
            Participant
              @johnbaguley78655
              Hi Steve,
               
              have sent you a pm.
               
              John
              22 December 2011 at 23:36 #80290
              Stephen Lawson
              Participant
                @stephenlawson35167

                Please excuse my ignorance John – PM?

                22 December 2011 at 23:46 #80293
                John Baguley
                Participant
                  @johnbaguley78655
                  Hi Steve,
                   
                  ‘personal message’ . When you log on, look in ‘My Messages’
                  John
                  22 December 2011 at 23:51 #80294
                  Stephen Lawson
                  Participant
                    @stephenlawson35167

                    Figured it out -“eventually”

                    23 December 2011 at 10:21 #80310
                    Stephen Lawson
                    Participant
                      @stephenlawson35167
                      For info – John has sent me a copy of article printed in ME dated February 1962. By Martin Evans, the article describes the construction of 5″ Firefly in great detail including working drawings.
                      After mentioning my difficulty to a neighbour, also named John, he came up with a book “Manual of Model Steam Locomotive Construction” by Martin Evans.
                      My cup runneth over !
                       
                      Many thanks John & John
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