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Myford Super 7/7B

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Myford Super 7/7B

Home › Forums › Beginners questions › Myford Super 7/7B

Viewing 6 posts - 1 through 6 (of 6 total)
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  • 30 September 2011 at 08:23 #5677
    Morgan Sweet
    Participant
      @morgansweet
      30 September 2011 at 08:23 #75572
      Morgan Sweet
      Participant
        @morgansweet
        Please can anyone tell me the difference between a Super 7 and a Super 7B and are parts/tools available for these machines as I understand that Myford have ceased trading, Thanks for any information.
        30 September 2011 at 09:06 #75573
        NJH
        Participant
          @njh
          Hi Morgan
           
          Short answer – Super 7B is a Super7 with a gearbox.
          Some original spares are available from Home & Workshop machinery and we all await the new Myford web site which is being built – click on the Myford box at the righthand side of this page.
           
          Regards
           
          Norman
           

          Edited By NJH on 30/09/2011 09:08:45

          30 September 2011 at 10:14 #75576
          Morgan Sweet
          Participant
            @morgansweet
            Hi Norman
             
            Thanks for the information, I have recently purchased a well used (from my work place) Myford Super 7 and it has a gearbox, although not all speeds work (no doubt someone operated it whilst lathe was still running) and I would like to restore it so I hope parts become available. The bed also has the usual workshop hacksaw cuts around the headstock end. I also need to convert it to single phase and wonder if to replace the motor or buy a Single phase to three phase inverter. Any thoughts ?
             
            Best wishes
             
            Morgan
            30 September 2011 at 11:09 #75577
            David Littlewood
            Participant
              @davidlittlewood51847
              Morgan,
               
              I would definitely recommend you keep the 3 phase and get a VFD. The advantage of this is that you have infinitely variable speeds, and can change on the fly. This means, among other things, that when facing a large diameter piece you can start slow and speed up as the diameter reduces. The motor is also smoother.
               
              I Replaced the 0.5 HP single phase motor on my S7 with a 1 HP 3 phase + VFD (package from Newton Tesla) a couple of years ago, and the improvement is significant.
               
              David
              30 September 2011 at 11:57 #75582
              NJH
              Participant
                @njh
                Hi Morgan
                 
                Mine has a single phase motor which is fine so I find the expence of a change hard to justify but I do agree with David. In your situation I would certainly retain the 3 phase motor and benefit from the variable speed that the convertion would supply..
                 
                Regards
                Norman
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