One more thing
   thanks
         floor

Hi Floor,

I have ordered a bunch of bearings and already have lots of ceramic magnets.  I just need to find some suitable material for the rods and I think I will then have everything I need to start some serious experimenting with your ideas.  Thanks again for sharing.

Carroll

I discovered that one of my problems is I used steel to be able to
slide the magnets into adjustment and that causes some attract back
sticky spot. So I have switched to SS or Aluminum.

But further weaker weakens the power out.
So that means very close tolerance is needed.

Norman

I found something today I think will make some nice rods for supporting all the magnets.  If you have a Tractor Supply store near you they have a pretty nice assortment of metal pieces and a very large assortment of nuts and bolt.  Today I found some aluminum angle that is 1/8" thick and measures 1" by 1" on the sides and it is 48" long.  I believe this will work fine with the bearings I have on the way to make a very rigid but smooth moving assembly for mounting the magnets to.  When I get some time I will try to draw up something to show how I plan to build the device based on all the information Floor has given.  I have out of town company coming in for a few days so it may be next week before I can try to draw something up.  But I am thinking about this a lot.  Still working out in my head the best way to move the shielding magnet at exactly the right time.  I think I have that idea worked out but will need to make some prototypes to see what works best.

Take care,
Carroll

Quote from: citfta on June 11, 2019, 09:28:36 PM

But I am thinking about this a lot.  Still working out in my head the best way to move the shielding magnet at exactly the right time.  I think I have that idea worked out but will need to make some prototypes to see what works best.

Take care,
Carroll

There is no continuous motion in the devices I have illustrated on this topic. 

There are some rotation aspects to some design  that were posted in another topic.

All motions and / or actions are start, completion of that action, then and then only then, does the next action begin.

There is No constant motion. 
There are no constant motions.

                floor