All Permanent Magnet Motor

[magnetman12003]

This is the motors basic design. Shown is only one 45 degree angle for clarity.

[synchro1]

I precieve a tilting tendency. One thing's for sure: Conradelectro can be counted on to supply a special set of failed approaches. He will have help.


It may work upside-down. Suspending the ring only from a ball magnet bearing would help build speed.

[gyulasun]

Hi Tom,

I am trying to understand what causes the rotation for the top ring magnet versus the fixed bottom ring magnet.

I understand the repel force between the block magnet and the rod magnet and also the strong attract force between
the top ring magnet and the rod magnet.  But all these magnets are placed onto the common platform which is supposed
to rotate together with the top ring magnet, right? 
I know the rod magnets can freely move up or down in the plastic tube. BUT I am puzzled by what makes them
move upwards? so that gravity should place them downwards again.  What I am missing? 
Thanks for sharing this interesting setup.

Gyula

[magnetman12003]

Hi Tom,

I am trying to understand what causes the rotation for the top ring magnet versus the fixed bottom ring magnet.

I understand the repel force between the block magnet and the rod magnet and also the strong attract force between
the top ring magnet and the rod magnet.  But all these magnets are placed onto the common platform which is supposed
to rotate together with the top ring magnet, right? 
I know the rod magnets can freely move up or down in the plastic tube. BUT I am puzzled by what makes them
move upwards? so that gravity should place them downwards again.  What I am missing? 
Thanks for sharing this interesting setup.

Gyula

The bottom large ceramic magnet could be a lazy Susan platform. As long as it rotates.
All it does is support the free large top ceramic rotating magnet above it.
You should build this and see what I am encountering. I am surprised the rod magnets don't shoot out of the tubes ends.
It seems the rod magnet South Pole end ( in my case) is pinched between the South Pole backside of the block magnet and the powerful North Pole downward force of the large ceramic magnet under it??

[synchro1]

@magnetman12003.

That's got me in a tizzy to read that! Centripetal force. Do both rings spin simultaneously? And :

Suppose we turn it upside down and try and spin the unencumbered ring? Would that work?