I'm very open minded about Steorn having the smoking gun, but the people who keep saying there's not bemf are wrong, and I've already explained it. Again, you cannot do the bemf tests without any current in toroid coil. The toroid coil *must* have current going through it if you want to see the bemf. Many pages back in this thread I told Ben how to measure this, and how it's working, but it seems this was ignored.

IMO the excess energy effect, if any, is in the magnetic viscosity.

Enjoy

look at this :

http://jnaudin.free.fr/steorn/index.htm

look at this :

http://jnaudin.free.fr/steorn/index.htm

I have been following him for years!!!!  Right on.  I wonder if there is an English translation.  I can sort of read the french enough to get the just of the subject but need more accurate information.  GREAT someone else has jumped in there and JLN is good.

Respectfully
Ben

Hi Ben,

Thanks for taking the time to answer my questions.

Steorn has’t yet shown proof for overunity. 

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Correct

However, Steorn has shown practical elimination of back emf. How is that conventional? 

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Actually a bifilar coil does eliminate BEMF OR as the motor will run the same direction on either direction of current flow, you can wire even multiples of toroids in bucking mode, balanced inductance and resistance and balance out the back EMF, both works.[/1uote]
 

That’s well and good. In addition, it seems Steorn show a spinning rotor. Thus, while the first may be conceivable, the spinning isn’t at all to be expected.

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I haven’t even seen yet proof that even the negligible back emf is due to the presence of the rotor. It very well may be that that’s due to imperfections in the making of the coil and will show itself even in absence of rotor. @k4zep may help us easily in clarifying this -- show the osciloscope traces i absence of rotor and see iif there's the same slight back emf.

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JUST CHECKED, background output of non energized coil is less than 2 mv pp, looks like noise, nothing to photograph.

Ben, the oscilloscope traces I have in mind are always taken when the coil is energized. Thus, energize the coils and show what the oscilloscope patern is when there’s no rotor present and then show the patterns when a rotor is present. When I discuss this I always have in mind energized coils.

Jean Naudin is a legend. Well done. I too wish there were an English translation of this fine study. Now, it seems we're getting more and more into a positive territory we've never been before.

Go to:  http://translate.google.com/# and paste in http://jnaudin.free.fr/steorn/index.htm
in the box.  Does an excellent job of translating the page!!!

Ben

Google translation puts out a pretty good english version of JL Naudin´s page:

http://translate.google.com/translate?js=y&prev=_t&hl=de&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fjnaudin.free.fr%2Fsteorn%2Findex.htm&sl=fr&tl=en

Hi Stefan,

JLN's motor is vastly superior to mine.  MY hat is off to him.  It does suck current too, about 4.5 amp pulses but that is to be expected.
OK, who's next!!!!!

Ben

Thanks Ben and Stefan.

Any of you have seen this one ?

http://www.youtube.com/watch?v=ARztYvprKkA

They're able to accelerate their motor when putting a load (only after a certain RPM is achieved) instead of slowing it down (expected effect)...

Another video in there is giving a lot of details on the setup too...

Oh, and this is my first visit here and first post, and I'm not a electronics guy at all, so bear me if this post is totally out of topic

PS: I can translate french if needed (when not sure about google's results, though it seems pretty good on what I saw for JLN website)

Peace

Where's everyone. Maybe everyone's building one of these now, including myself.     The only difference is that I'll include a measurement to see if there's bemf >when there is current in the toroid coil!<  To say there's no bemf when there's no current is meaningless, which is what I've been trying to tell everyone far before MH even said anything. Someone in another Steorn thread said that MH is getting the credit, lol.

So IMO the excess energy would be due to magnetic viscosity, so don't think this task will be easy. Congrats to Steorn on an awesome achievement!!! And congrats to Ben & J.L.Naudin on a great first build.