Magnet motor idea. "zipper" magnetmotor.

[Low-Q]

If your are going to force magnets into repulsion, then you must use grade SH or better.
Regular 80 degree neos will get depleted rather quickly when forced into repel.
But this will not happen with grade SH or better. They are extremely resistant to demagnetization.

You have an important point. However, the magnets will not demagnetize when they are aligned with S N vertically on axis, and placed side by side (See my illustarions earlier in this thread). This alignment will only extend the size of the magnet when they are placed tight together, and not cancel out magnetism..

Also, the attraction mode can also be used, but that will reverse rotation (Well, if it works in repelling mode).

Vidar

[FatChance!!!]

So when do you expect to have an early prototype up running?
Or perhaps part of the design showing if the idea is valid enough for a complete build?

[Low-Q]

So when do you expect to have an early prototype up running?
Or perhaps part of the design showing if the idea is valid enough for a complete build?

Hmmm, I must admit that it is quite temting to try building one. I have a bunch of small square ferrite magnets. They are not very strong, but very cheap, and probably good enough for a prototype. Weak magnets are also easier to handle - especially with respect to the magnetic shielding. A bunch of N50 neomagnets would probably make everything collaps .

I will see what I can use to build a prototype, but don't hold your breath. I have also been discussing with Butch several possible ways to use the pseudo solid concept in other fashions to simplify the final design as much as possible. Butch have the guts to try everything, so it is interesting to see his new videos and what he is capable of testing and build.

Vidar

[Low-Q]

Low-Q
This is an excellent design! It seems it may avoid all the usual entry and exit problems.
This should still work even if simple cylinder magnets were used by interlacing them between each other as they zip together. The possible issue could be an increased draw to the iron because of the tighter field of the interlaced magnets. (need to test this)

Just want to comment the drag issue.

Cylindrical magnets will not create a uniform bar when aligned as pseudo solid. This wil increase the influence with the shield when the magnets exit. However, the main consept is to let the majority of flux to be distributed angular to the movement when they exit the shield.

[FatChance!!!]

Try this place for custom made magnets. I've only had positive experiences when dealing with them.
http://www.magnesy.eu/magnesy_stale-g0-230.html
Making custom shapes should be pretty cheap using ferrite magnets.

Send them an accurate drawing and quantity of your needs and they will quote you a price for free.
magnesy@magnesy.pl