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Electric slip ring construction?

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  • #16
    Start by selecting a narrow carbon brush preferably a stock size that's available with a spring and a shunt (braided copper wire inserted in the brush). Find a brush bushing suited to the brush (one less damn thing to make)

    This place seems to be a one stop shop:

    http://www.helwigcarbon.com/products...n-brushes.html

    Make a face slip ring from copper faced FP4 fiberglass/epoxy circuit board material. The slip ring conductors take the form of concentric copper circles like a target. Make it two sided with a target on each side. Make each ring as wide as the brush. Drill through and slip 1/32 brass wire. solder both sides, and dress flush. One side is the ship ring the other is solder pad for the connecting wire. Rhodium Dalic plate would be a nice final touch if high reliability is an issue.

    You can make the first few prototypes on a lathe by machining the copper from between the slip rings.

    All that left is brush rigging and a mount.

    Or you could cop out and buy what you need off eBay for about $7:

    http://www.helwigcarbon.com/products...n-brushes.html

    Or if you wish, the component approach for $35:

    http://www.ebay.com/itm/KYS06-6-Wire...8#ht_811wt_867
    Last edited by Forrest Addy; 08-10-2014, 07:21 PM.

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    • #17
      Fascinating, your not building a sheep shearing lathe are you!
      Mark

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      • #18
        Originally posted by boslab View Post
        Fascinating, your not building a sheep shearing lathe are you!
        Mark
        Not a lathe but the slip ring is for my sheep shearing machine!
        Location: The Black Forest in Germany

        How to become a millionaire: Start out with 10 million and take up machining as a hobby!

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        • #19
          Originally posted by Black Forest View Post
          Not a lathe but the slip ring is for my sheep shearing machine!
          Oh noes, hes move on from simple ... and onto electroshock.. those poor sheep.
          Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

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          • #20
            Wind turbine ring sets are quite good, waterproof etc
            http://www.ebay.co.uk/itm/30-amp-per...p2054897.l5660
            Mark

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            • #21
              Originally posted by Black_Moons View Post
              Oh noes, hes move on from simple ... and onto electroshock.. those poor sheep.
              Yes I am building a induction grill for when I shear a sheep directly after it can be nearly instantly barbequed!

              Actually I am trying a new type of leg restraints.
              Location: The Black Forest in Germany

              How to become a millionaire: Start out with 10 million and take up machining as a hobby!

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              • #22
                Are you going to be able to CNC this machine?

                (I still think you should have wheels on the machine so you can drive it around like a combine harvester, woolies getting sucked in the front, startled looking baldies tumbling out the back and a neat row of wool bales left in your wake!)

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