Working Magnetic Motor on you tube??

[crash_uni8]

@All Replicators
has their been any more positive runs?

[Ergo]

None yet....perhaps tomorrow but I wouldn't bet on it.

[Omnibus]

@Bruce_TP,

Thanks for the stator data. As for the Aluminum for the dampers you?re exactly right. That?s one issue we have to careful about.

I will also have the problem of decreasing my rotor weight from 303g down to 258g. Wonder what it is in the other replicas here?

As far as the 5mm rotor-stator distance, I think mine is fine.

The 30.5mm of the rotor magnets is a pretty rough estimate. Much better would be to have numbers for the induction measurements at the surface of the magnets. I have my Hall probe attached immovably at the bottom of a plastic tube of a diameter almost equal the diameter of the rotor magnets so that I?d have the probe reproducibly at the same place on the surface of the magnet when I drop it there. Wish @alsetalokin could do some measurements of the kgauss at least at the surface where the poles are of his rotor and stator magnets. The strength of the magnets and the form of the fields in his machine is most crucial to know, together with the weight of the rotor and stators (which we already know).

[Omnibus]

.

[terry1094]

You mean something like this: http://youtube.com/watch?v=wcy0tedYBMg, That's the most interesting rendition so far of the well known idea we're trying to reproduce. The difference in our case now is that there's someone real who's willing to talk to the replicators to a certain extent.

And, note, the magnets in that video are ceramic and not neos, if we heed Stefan's concern about the degradation of the neos.

Hi Omnibus.

Thanks for the video. The Lego touch makes an amusing statement of cheeky simplicity - though I'll avoid passing judgement on its validity.
However, if such a construction were for real then you could imagine the headlines...

"Boy with Lego set challenges science as we know it" 

The belt arrangement is something akin to what I had in-mind, though reducing frictional losses by requiring just two belts - one between the main rotor and one of the pulleys (this maintaining the correct registration and setting Rotor-Stator gear ratio), with the peripheral belt simply to keep any number of stators in sync.

Perhaps easier to build from available off-the-shelf parts, though probably too lossy still 

I hadn't seen Stefan's comments regarding neo magnets and possibility of degradation, though I'd guess the electrically conductive nature of neo's (as opposed to ceramic) could also have some small impact due to dynamically shifting field patterns about the magnets - as per the effect induced by the dampers.


FunkyJive

Major kewl since this is the 50th anniversary of the Lego Brick

http://cache.lego.com/2057/anniversary.htm

may they lead us out of the valley of the evil oil barons!

Terry