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Myford ML7

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Myford ML7

Home › Forums › Beginners questions › Myford ML7

Viewing 8 posts - 1 through 8 (of 8 total)
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  • 1 May 2012 at 15:18 #6126
    David Blight
    Participant
      @davidblight39097

      Modification to saddle

      1 May 2012 at 15:18 #90066
      David Blight
      Participant
        @davidblight39097

        The saddle on my ML7 no. K77035 gets progressively tighter when moved towards the tailstock. Measurements across the front shear show large variations, measurements across the bed show less than 1 thou.

        Gaps between rear of rear shear and saddle were 18 and 20 thou.

        In ME vol 167 no. 3908, 1-14th Nov 1991 postbag page 501, J.B. Millar presents a solution for my problem which appears to be a very simple and hopefully within my capabilities.

        Have any fellow owners carried out this modification, and are there any snags?

        What method of restraining the new spacer is adopted, and what provision for oiling is necessary?

        David

        1 May 2012 at 18:16 #90072
        nigel jones 5
        Participant
          @nigeljones5

          mine is exactly the same – would like to know how to fix it??

          1 May 2012 at 19:55 #90077
          Ex contributor
          Participant
            @mgnbuk

            A method I have used sucessfully on my Super 7 was described in this thread

            http://www.model-engineer.co.uk/forums/postings.asp?th=64457

            HTH

            Nigel B.

            2 May 2012 at 11:57 #90103
            David Blight
            Participant
              @davidblight39097

              Thank you Nigel Barraclough for the reference, most helpful.

              Nigel J2, the site recommended will give all the information you need.

              David

              4 May 2012 at 19:02 #90225
              nigel jones 5
              Participant
                @nigeljones5

                Thanks. I read it. I didnt understand it.

                4 May 2012 at 23:01 #90245
                Chris Trice
                Participant
                  @christrice43267

                  Nigel, basically the early lathes used the outer and inner vertical surfaces of the front shear of the bed to guide the saddle assembly. Later lathes used the outer face of the front and rear shear leaving the inner surfaces of both shears exclusively to guide the tailstock. With the later lathes, because they use the outer surface of the rear shear to guide the saddle, the saddle is also wider at that point and therefore there is a larger area in contact with the shear and less prone to allowing the saddle to rotate off axis on the bed. The outer surface of the front shear nearest the operator is the surface the gib strip is adjusted against in both cases.

                  4 May 2012 at 23:03 #90246
                  Chris Trice
                  Participant
                    @christrice43267

                    The article is how to convert the early saddle in such a way that it mimics the later saddle arrangement by making use of the unworn rear shear outer surface.

                     

                    Edited By Chris Trice on 04/05/2012 23:04:20

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