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 Hi gotoluc,

For those who don't have a U shaped magnet and keeper, would you mind writing what happens with your U magnet Neo keeper setup Smiley

The horseshoe magnet flux density was 320 Gauss for North pole and 200 Gauss for the South pole when first tested.

We added the 1" X 1/4" round neodymium magnet to the North pole arm of the "U" magnet and the reading was 1480 Gauss for the North pole and still 200 Gauss for the South pole (saturation level).

We placed one end of the keeper on top of the neodymium magnet and have a reading of 580 Gauss on top of the keeper and 1460 Gauss under the keeper. The keeper does not touch the South pole by 1/4", it is not attracted or repulse by the South pole of the "U" magnet when standing on top of it.

You turn the keeper with your finger and the keeper goes around like the end on the magnet is fixed to a rotating shaft not on bearings. And when the keeper approach the South pole CW or CCW we felt a slight pull and little resistance when passing or exiting the pole.

When we placed a coil on the South pole arm near the edge, we recorded 0.15 Volts turning the keeper with a finger fast. About 70-80 rpm having to counter the fact that the end was not fixed to a shaft on bearings and the strong pull of the neodymium on the keeper and the North pole arm of the "U" magnet has a braking effect. There is near equal attraction and repulsion going on, a clash of vortexes that impact the coil with a big differential favoring the inside. Like the top of the keeper becomes a weak North pole and under the keeper becomes a strong South pole.

The practical setup, any number fixed of "C", "E" or "U" magnets or ferrites or better around a shaft mounted on bearings. Their ends surrounding the shaft rest on one side of a 2" x 1" x 1/4" Rings neodymium magnet. Their other ends holding coils.

Then the keeper(s) extend to the outer circumference marked by the outside edge of the "C", "E" or "U" magnet(s) or ferrite(s) or others on all sides (may have as many arms as you can efficiently fit). The keeper(s) is(are) fixed to the balanced shaft and wide as the  "C", "E" or "U" magnet(s) or ferrite(s) thickness. For more power a mirror image is set opposing the first built using the same shaft and keeper(s). Can be made into a compact and cheap setup.

The same no cog effect should happen with 2 stators, leaving just the Eddy currents to contend with. That would look good with my Newman motor. 

Take care,

Michel

My brain wont stop thinking about this device. I now think that the Coler affair was perhaps the greatest lost opportunity in the history of the UK. The money wasted on nuclear energy research would have been far better invested here. If we look again at the technical drawings in the original classified report, they are obviously the work of a professional draughtsman, but not one who had practical experience of building things. The images are perfect, but there is no mention of wire gauge, capacitor values, number of turns, or description of magnetic materials. Did Col er ask for "some magnets" or was he more specific? We do not know. If you ask for magnets in the 1940s you would probably be given the state-of the-art Alnico magnets unless you ask for something else, sat "1% Carbon steel magnets"
.              I know very little about magnetic theory, but I believe that the material here is critical. Notice you got better results with weaker magnets. My theory, which may be rubbish, is that the domains need to be stable enough to have some retentivity, but unstable enough to be able to vibrate or flip when it is required.
   There are a great number of variables in this set up, Many of which are almost infinitely variable. It is a bit like trying to crack a combination lock with hundreds of wheels. Finding all the optimum settings is like winning a lottery. Michelinho, do you realise how lucky you are to have achieved any output?

Hi neptune,
i do fully agree with all you said.
Thanks a lot for concluding.
Technically, pese could be a great participant btw.

The only thing i would like to complain is, that Hans Kohler (original name, i do believe)
was a great opportunity of the Germans before of '45,
after our "occupists" took control and suppressed everything exept Texan-Oil-Industry&Co

best regards,
sushi.

Thank you Michel for taking the time to write about your experiment and ideas of your U magnet Neo keeper setup.

Very interesting!... I hope you continue to study the effects.

Please do keep us informed of the development if you chose to do so.

Thanks for sharing.

Luc

To Michelinho

Hi,

With a setup like this (not mine)

It will be easier for you to adjust the magnets

Hi sushi moto,

Yes the whole process is time consuming as it is the only thing that will show peak output. It could be done with step motors or linear motors and gears or strap with a programmable chip that would pause and compare various settings position vs electrical output. The tuning has to be done with magnet positioning first and then different tuning coil settings for each magnet movement.

But that would take part of the fun out. 

Take care,

Michel

Hi Michel,

I would not bring in electronics and magnetic motors because these are elements,
which were not available at Kohler's time.
Such elemnts are disturbing magnetic flux in the replication.

I would do it in the way, "tricky gemans" at that decade had done it.
Its a wooden (plexi) disc with "spiralic" inserts. Hard to describe.

best, sushimoto

If you look at the photo in the post by Albator 10, you will see that the wound magnets are mounted on holders or carriers, which have some kind of pins running in slots in the base board. My idea is that these holders would have a wooden projection extending towards the centre of the board, but stopping about 2cm short of the centre point . Now imagine a threaded rod mounted vertically through a hole in the centre of the board. Screwed onto this rod is a cone, with its narrow end at the bottom. As you screw it down, it pushes all the wound magnets appart equally. The magnet holders would each need a spring [or a rubber band ] pulling towards the board centre. The threaded rod and cone would best be wood, plastic, or other non magnetic material. This is the simplest idea I could come up with. On top of the cone, mount a large wheel for easy small adjustments. I own the Anti- copyright on this any anyone can use it if they want.

That would work very well. Great idea to get them all to equally slide out. I'll try to find a cone made of plastic, wood or other material.

Take care,

Michel

Hi everyone,

Here is an article from "The Electrical Experimenter March 1916":

Substitutes for copper in Germany.

So scarce has copper become in Germany, owing to the trying conditions of the war, that substitutes have been found to replace copper wherever possible, especially in electrical plants, where, of course, such large amounts of this valuable metal are used. The new regulations of the German Association of Electrical Engineers cover this saving of copper by the substitution of other metals, notably zinc and iron.

Zinc busbars are advocated, and tables have been worked out for the carrying capacity of same, as well as for zinc bolts and zinc and iron wire. Where zinc is used its low mechanical strength, low elasticity, low melting point and its sensitiveness to high and low temperatures must be taken into account, of course. Wherever iron and steel are used for contacts they must be protected properly by means of zinc plating, lead plating, or else by greasing, etc.

With regard to iron busbars, the rule in the case of direct current for the permissible current is to have the relation of 1 to 2.8 to the permissible current in copper bars of the same dimensions. If the war continues copper will be nearly unknown in Germany. -Elec. World.

Still playing around with the original setup and still tuning. I should get 6 big "U" magnets for the newer version (6" X 3" X 3/4") soon.

Take care all,

Michel