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Oscillating Reed Switch Pulse Motor.

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  • Oscillating Reed Switch Pulse Motor.

    I'm starting this thread to help OrionLightShip replicate the "Oscillating Reed Switch Pulse Motor". I'll be available to anyone else who cares to follow along.

    Firstly, let me stress that high speed magnet spinning is potentially lethal if proper safety precautions are not followed. I advise spinning inside a PVC coupling; Much thicker material then the pipe itself. I used the 2 1/2 inch diameter coupling. This thick walled material is ample protection against shattering, and should be the first item on your shopping list.

    I used one CD on the top, but gluing two or three together might make more sense. The CD's need a hole close enough to the diameter of the thread spool pulse coil to fit snugly, but loose enough to push and pull the coil up and down a few millimeters each way for positioning. The CD's need to be free to slide around over the top of the coupling a little also.The Reed switch always remains fixed in position on the coil with strong glue. Naturallly, the open bottem of the PVC coupling should be facing a strong table top. This creates a complete safety enclosure. A tiny window can be cut in the side of the PVC coupling to allow for "Laser Taching" the rotor speed. We could drill a hole there to plug the "Laser Tach Lens" directly into, and build a support to hold the meter up off to the side. No shatter framents to get through that way either!
    Last edited by Allen Burgess; 12-24-2015, 10:09 PM.

  • #2
    Ok thanks, I'll start reading the link you provided and try to get up to speed. I assume from the above post that we will spinning a neoball or something....what are the specifications for that?

    Comment


    • #3
      These are pictures of perhaps the World's first Internaly Motorized Alternator, minus the output wrap.

      Left to right:

      1- View of the 3/4 inch spinner in the 2 1/2 inch PVC core.
      2- Miniature 1/4 O.D. , 1/8 I.D. all ceramic bearing on top of a Radio Shack 12 volt 6 amp hour battery.
      3- Position of the 12 volt Reed Switch on the Hi Voltage Spool Coil. Pins should point away from the magnet..
      4- Top secured for runing with coil seated down partly inside the output core.
      5- The six main componants: Power coil on core, 1/8 inch brass axel, ceramic bearing, battery and Reed Switch.
      Last edited by Allen Burgess; 07-30-2017, 03:50 PM.

      Comment


      • #4
        K@J magnetics

        RC4CDIA

        3/4" od x 1/4" id x 3/4" thick
        Nickel Plated
        Diametrically Magnetized

        $9.81

        https://www.kjmagnetics.com/products.asp?cat=16

        We'll be spinning this 3/4" diametric tube magnet with over 20 pounds of pull force! You might want to order two for the same shipping cost. Don't worry about reading that link, it's too eclectic.
        Last edited by Allen Burgess; 07-30-2017, 02:55 PM.

        Comment


        • #5
          Ok, I have two coming.
          Have to go to Lowes tomorrow so I'll pick up the heavy duty coupling while I'm there.

          Comment


          • #6
            is the shaft a brass brazing rod?
            and how to source the coil?

            Comment


            • #7
              1/8" Brass axle rod.

              Here's a 1/8" industrial strength rod from ebay; Any local hadware store should stock this kind of industrial rod: This is not a welding rod.

              NEW K&S Solid Brass Rod 1/8 8164 NIB
              $1.42
              Buy It Now
              4 watching
              |
              843 sold
              Stock# - k+sr8164 mfg# - 8164. This is the 1/8" Solid Brass Rod from K Precision Metals. K Solid Brass Rod 3/32. K Solid Brass Rod 5/32. K 1/16 Solid Brass Rod (3) K Round Brass Tube
              Last edited by Allen Burgess; 07-30-2017, 02:55 PM.

              Comment


              • #8
                Thread spool coil form.

                Here's a picture of the kind of thread spool you'll need to wind the wire coil on: These spools come in different sizes. A medium size spool gauged from the pictures should be available in a craft shop without the string.

                Next you see the Radio Shack Magnet wire set. We're going to use the "Red Wire".
                Last edited by Allen Burgess; 07-30-2017, 02:55 PM.

                Comment


                • #9
                  Reed Switches and Alarm Battery.

                  While you're at Radio Shack, try and pick up "5" of these kind of 12 volt Reed switches:

                  RadioShack® SPST 1AMP 12V Reed Relay
                  Catalog #: 2750233
                  $3.99

                  Fast response, small size and low cost make this 0.5 amp relay a good choice for robotics, computer interfacing and projects that require several relays. • Maximum switching power of 10 (Watt/VA) • Maximum switching voltage of 60 VDC, 120VAC • Maximum switching current of 0.5 A • Maximum initial contact resistance of 150m ohms

                  Try and buy one of these 12 volt rechargeable alarm batteries too while your're at Radio Shack:

                  Universal Power® 12V, 7Ah Lead-Acid Alarm Battery:
                  Last edited by Allen Burgess; 08-02-2017, 02:10 PM.

                  Comment


                  • #10
                    tinycad

                    Yes... very contagious, love working on these smaller projects. Allen is this schematic how we are connecting everything up, or is there a need for the reed relay?

                    Reed Motor Schematic.jpg

                    Cool - Patrick



                    Originally posted by Allen Burgess View Post
                    These are pictures of perhaps the World's first Internaly Motorized Alternator, minus the output wrap.

                    Left to right:

                    1- View of the 3/4 inch spinner in the 2 1/2 inch PVC core.
                    2- Miniature 1/4 O.D. , 1/8 I.D. all ceramic bearing on top of a Radio Shack 12 volt 6 amp hour battery.
                    3- Position of the 12 volt Reed Switch on the Hi Voltage Spool Coil. Pins should point away from the magnet..
                    4- Top secured for runing with coil seated down partly inside the output core.
                    5- The six main componants: Power coil on core, 1/8 inch brass axel, ceramic bearing, battery and Reed Switch.

                    Comment


                    • #11
                      Oh, what is the gauge, total resistance, core width and height of the coil you made? Not the spools core, the actual core size of the wire. I think that wood spool does not allow the wire to have such a small core size.

                      It looks like the spool you used is much shorter than the one you have in this picture, could be the angle of the photo...
                      Thanks,
                      Patrick


                      Originally posted by Allen Burgess View Post
                      While you're at Radio Shack, try and pick up "5" of these kind of 12 volt Reed switches:

                      RadioShack® SPST 1AMP 12V Reed Relay
                      Catalog #: 2750233
                      $3.99

                      Fast response, small size and low cost make this 0.5 amp relay a good choice for robotics, computer interfacing and projects that require several relays. • Maximum switching power of 10 (Watt/VA) • Maximum switching voltage of 60 VDC, 120VAC • Maximum switching current of 0.5 A • Maximum initial contact resistance of 150m ohms

                      Try and buy one of these 12 volt rechargeable alarm batteries too while your're at Radio Shack:

                      Universal Power® 12V, 7Ah Lead-Acid Alarm Battery:

                      Comment


                      • #12
                        Originally posted by THEminoly View Post
                        Oh, what is the gauge, total resistance, core width and height of the coil you made? Not the spools core, the actual core size of the wire. I think that wood spool does not allow the wire to have such a small core size.

                        It looks like the spool you used is much shorter than the one you have in this picture, could be the angle of the photo...
                        Thanks,
                        Patrick
                        @Minoly,

                        The magnet wire is 26 gauge. I can't answer those other questions. Anything should work keeping in general proportion. The important feature is the series connected bifilar wrap.
                        Last edited by Allen Burgess; 12-24-2015, 03:54 PM.

                        Comment


                        • #13
                          Precision ceramic bearings.

                          Hello Richard,

                          Thank you for your email. I show you ordered 2 different full ceramic bearings from us. The part numbers are:

                          R144-T9/P58 LD ZRO2 (.125x.250x.093) - $48.95 each.

                          R144-TP/C3 Z/S #5 AF2 (.125x.250x.093) - $79.95 each.

                          Sorry, I am not able to offer this size flanged in a full ceramic type. Feel free to contact me with any other questions.

                          Michael Rudinsky
                          Boca Bearing Company
                          1420 Neptune Drive, Suite A
                          Boynton Beach, FL 33426
                          info@bocabearings.com
                          PH: 561-998-0004/ 800-332-3256
                          Fax: 561-998-0119/ 800-409-9191
                          Boca Bearing Company :: Ceramic Bearing Specialists
                          https://www.youtube.com/watch?v=VMTVv5qpbUY
                          https://www.youtube.com/watch?v=pBxH...k&noredirect=1


                          Here's a picture of the less expensive one below. The costlier model is made from different materials for longevity, and not worth it for the running times involved.

                          R144-T9/P58 LD ZRO2 (.125x.250x.093) - $48.95 each.

                          Fitting these bearings on the brass axle requires a small amount of sanding. That completes the parts list!
                          Last edited by Allen Burgess; 07-30-2017, 03:50 PM.

                          Comment


                          • #14
                            Schematic.

                            @Minoly,

                            The schematic looks pretty good. I'm sorry I can't supply you with the actual core dimension of the thread spool and the Ohmic resistance of the windings. The original coil's out of reach, in a storage locker back in Northern California.
                            Last edited by Allen Burgess; 07-30-2017, 03:50 PM.

                            Comment


                            • #15
                              shaft bushing

                              From the picture with the magnet mounted on the shaft, it appears you have a plastic bushing?

                              Comment

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