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Myford super7

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Myford super7

Home › Forums › Manual machine tools › Myford super7

Viewing 7 posts - 1 through 7 (of 7 total)
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  • 24 October 2016 at 20:29 #262799
    Dusty
    Participant
      @dusty

      Having spent the last two weeks lavishing some TLC on my recently acquired Super7 I decided to take a cut across the faceplate to check for facing accuracy, having first set the lathe up properly. I discovered that using second slowest backgear speed a clonky rumble manifested itself after a short while. Not being used to backgear for the last 50yrs, (electronic speed control) I wondered if any of you have had similar problems , and what was the result.

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      24 October 2016 at 20:29 #12799
      Dusty
      Participant
        @dusty

        Rumbling clonky backgear

        24 October 2016 at 20:35 #262800
        John Haine
        Participant
          @johnhaine32865

          I'm not sure if your clonky rumble is the same as my clonky rattle, but I think this is just a Super 7 feature!

          24 October 2016 at 21:14 #262808
          Dusty
          Participant
            @dusty

            The last time I worked on a Super7 was well over 50yrs ago, but I do not remember it being that noisy. I suspect it may be the passage of time. I will at some stage have a go at adjusting the meshing of the backgear to see if that is the cause. There is no appreciable wear on the machine, why even the front bearing of the mandrel still has the marks from its original fitting. The faceplate is perfectly flat I can just trap a 1/4" wide cigarette paper under straight edge laid across it.

            24 October 2016 at 23:44 #262837
            Robbo
            Participant
              @robbo

              Myford recommend "frequent" lubrication of the backgear spindle when it is in use. The oil nipple is in the centre of the backgear lever on the front of the headstock (and hidden by your faceplate!) and the oil has to pass down the length of the backgear eccentric to get where it is needed.

              25 October 2016 at 00:37 #262840
              Ady1
              Participant
                @ady1

                Backgear can be a bit rumbly and if things get really heavy on the cut you will get a clonking noise from any tooth errors

                As mentioned, it's a special feature for backeared lathe owners

                Edited By Ady1 on 25/10/2016 00:41:03

                25 October 2016 at 07:39 #262849
                Lambton
                Participant
                  @lambton

                  There is second oil nipple that need attention when using back gear it is located in the largest pulley of the headstock,.also enthusiastic over lubrication of the rear headstock bearing can produce some strange noises.

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