Magnetic shield by use of a second magnet - A better way I think.

[onthecuttingedge2005]

Why don't you use the Halbach array

http://www.ian.org/Magnetics/Halbach_Arrays.html

you can add magnetic shielding as well to decrease the field even more on the sides and the back.

Jerry

[Low-Q]

Thanks lumen, broli and thecuttingedge2005. I will take time to simulate your ideas. I also will simulate an alternative idea I got, where all forces work with me. I must admit I'm a little exited

[Low-Q]

Thanks for sharing. You idea seems interesting,

I believe you have to watch out for the height of the big magnet. If it's too long it might not attract too good, even worse it might start repelling. It should be at all times be smaller than the "virtual" magnet you create by those two magnets. In most ideal cases it should be a very very short magnet almost being a single dipole. That way you're sure the attraction will win.

I also don't understand why you're using 2 sets of magnets. You can use a single set to attract and repel. At TDC the magnets should keep on moving which will cause the big magnet to repel.

The reason why I use two sets, is because it should simulate a chain of these sets. Let's say all these sets are arranged circular, and a mechanism is arranging the magnets together where the big magnet is present so we can avoid a sticky spot. It can be hundreds of these sets, but also arranged tighter so the result will be a more uniform north and south pole the big magnet can attract or repel. If this big magnet is rotating and passes over these small magnet sets, and a mechanism will force the magnetsets together right in front of, and release the magnetsets behind the big magnet, the big magnet will allways attract in front and repel behind it without having a sticky spot that will stop the big magnet from runnig.

The question that remains is if there is the same energy spent to force the magnetsets together as the very same magnetset gets back when releasing (and expanding) again. Without the big magnet present, these two energies should be equal and cancel eachother out perfectly. However, in this case where the big magnet IS present, there will be a different event in front of the big magnet and behind it. So maybe that will be the dead end of this design. I don't know yet, but as you said, the shape and size of the big magnet will affect how the magnetsets will behave, and how they again affects the big magnet.

A different design of the big magnet might be a better solution. I'll see what I figure out.

Vidar

[lumen]

The concept I have been testing is very close to Low-Q's design, with a few differences.
The testing at this point shows an energy gain of about 15%. The configuration had about the same gain using two different testing methods and I still can't believe it is really there.
I have some new magnets coming that should be even better for this process and if I can get the (what appears to be gain) up to over 20%, I will attempt to build a magnet motor based on this principal.
Anyway this is the concept I posted earlier in another thread but thought I would post again because it is so close to Low-Q's concept.

[onthecuttingedge2005]

I think the "shielded Halbach array" is the closest you would get to creating a monopole effect with minimal field on the sides and the back. it is quite possible that nature itself provides such a Halbach array effect but in what material naturally.

Jerry