Canceling Lenz's Law - Methods

[i_ron]

But be prepared to do a great deal of work before it is useful to you   

I'll continue on my other project.

BEP,

Here is my start of the project... how am I doing?

Ron

[BEP]

BEP,

Here is my start of the project... how am I doing?

Ron

Very nice start! You certainly have the concept. I never did well with a ferrous center because the flux will find sneak paths just like electric current. I always wound up using brass, silicon bronze or plastic for the axel of the rotor.

Don't throw it out by any means. If it is a problem you can modify later. When sizing the stator sections try to maintain the same amount of cross section as the rotor portion facing the stator.

I had to take a short break from a newer design. These things can really wear on you 

[i_ron]

Very nice start! You certainly have the concept. I never did well with a ferrous center because the flux will find sneak paths just like electric current. I always wound up using brass, silicon bronze or plastic for the axel of the rotor.

Don't throw it out by any means. If it is a problem you can modify later. When sizing the stator sections try to maintain the same amount of cross section as the rotor portion facing the stator.

I had to take a short break from a newer design. These things can really wear on you 

Thank you! 

I note that on the drawing it says, "low permeability rotor core"

Other than that, couple of questions, what did you use for magnets? that is what material and about
what size?  Is the magnet stationary? gap at the rotor interface? Have you tried the "magnet stack"
in the vertical leg? or even additional magnet material in the vertical leg?

Ron

[BEP]

Thank you! 

I note that on the drawing it says, "low permeability rotor core"

Other than that, couple of questions, what did you use for magnets? that is what material and about
what size?  Is the magnet stationary? gap at the rotor interface? Have you tried the "magnet stack"
in the vertical leg? or even additional magnet material in the vertical leg?

Ron

By 'core' I meant the supporting structure of the rotor. To me the rotor and 'core' were different materials.

The ceramic magnets were liberated from the largest welding ground clamp magnets I could find. they are about 3/4 thick and 2-1/2 O.D.
The magnet is attached to the rotor.

Some of my first experiments used a magnet in the stator. I found I had better coupling with a rotating magnet coupling to a stator than magnet in a leg plus another air gap.

The post with the sketch was meant to show the basic function. I usually build with what I can find so all the other measurements must follow.

[i_ron]

By 'core' I meant the supporting structure of the rotor. To me the rotor and 'core' were different materials.

The ceramic magnets were liberated from the largest welding ground clamp magnets I could find. they are about 3/4 thick and 2-1/2 O.D.
The magnet is attached to the rotor.

K, I was designing here for 2 1/4 inch MOT magnets and was wondering if I was close. I have a
couple of speaker magnets at 4 inch and 5 inch but every thing gets much bigger... so glad I am some what close.

This thread is open to all, jump in, if you have a question or comment....

Ron