All Permanent Magnet Motor

[gyulasun]

I plan within two weeks to show that video probably on the U Tube
On a table with transparent top or cement floor so no one can say there is something under it causing it to spin. And a side cover to show there is no compressed air stream blowing it around.
Also I plan to slow the speed down so one can see a definite rotation without the blurred image.

That sound good Tom,  and may I ask you to slow down the rotor by your hand in that video and then let it accelerate again to its final speed?

One more thing:  have you tried to change the 45 degree angle of the plastic tube to have a higher or lower tilting angle?  Very likely it would also influence rotor RPM.  What do you think? 

Thanks, 
Gyula

[synchro1]

I get a 1/2 turn spring recoil with two 45 degree ceramics and discs; Crude quick and dirty job. This kick reminds me of the spring action in my Kundel replication. There is definitely a very strong return to position force at work on the upper ring that responds to turning it!

I am puzzled by this point in place attraction (Cog Spot) over the bottom ring?

[magnetman12003]

That sound good Tom,  and may I ask you to slow down the rotor by your hand in that video and then let it accelerate again to its final speed?

One more thing:  have you tried to change the 45 degree angle of the plastic tube to have a higher or lower tilting angle?  Very likely it would also influence rotor RPM.  What do you think? 

Thanks, 
Gyula

I brought the rod magnet onto the top side of the 45degree neo block in repel with a lot greater response.
Now the 45 degree block and angle go counterclockwise.

[Magwood]

Thanks Magnetman,
I am going to try with 145mm as that seems to be the largest I can find on this site.
https://magnet.com.au/ferrite-ring-magnet-145mm-x-75mm-x-20mm.html

I will see if they have the other magnets I need as well, or close to.

Unless you can see any problems with changing the sizes slightly?
Do you think it needs to be aluminium, for the material used on the angles? Perhaps this is creating some sort of shield off balance and it needs to be aluminium to work?
I'm wondering if it will work with wood.  Can't wait to start diving in. I know a lot of people say this can never work but I have always believed there must be some way!
Eddy currents created from the first movement is probably what starts it, I doubt it would accelerate by itself from a stalled start but I could be wrong.

[Thaelin]

What would keep a builder from locking the top ring to an overhead gantry and allowing the lower ring to spin? This would bypass any imbalances in the setup. I have sourced a set of 5.3 inch rings and 1X2X.5  n45 neos. This is really a simple thing to knock out so decided to do it. I have 5 weeks off at the moment so why not. I will be setting the inside of whichever ring is to move with 3D printed pair that will have skate bearings in both sides. Thanks Magg for sharing as I need things to keep busy with. Love to play with magnets anyhow.


thay