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[Jdo300]

You know, to be honest, I wouldn't worry all that much about the minute difference between the rotor magnets' strength. As long as you bought them all from the same place in one batch, chances are that they should all be pretty much the same field strength. Most NdFeB magnets are sintered and magnetized in large batches which means that they should all have equal field strength. The only acception to this would be if you stressed one of the magnets after recieving it.

You're more likely to have larger tolerance errors in the machining of the rotor and stators than in the field strength of the mags. I'd concentrate more on the tuning between the rotor and stator magnets.

God Bless,
Jason O

[blue_energy]

blue_energy
Just for the record that was an assumption on Al's part. He was guessing that was the gauss value. It funny being in an R&D lab the magnets could have not been compared to an known mag spec or metered to help tie down the gauss value.
Don't take this as a poke toward Al, he really did a good job reporting, but i feel that he was getting pressured by his boss or somebody relating to this discovery.

Regards
Bill

Hi Bill,

Ah... I didn't realize that.  Then, we still don't know a critical piece of data relating to replication.  In Clanzer's design, the stator assembly can be backed off in order to reduce the effect of the magnetic fields upon each other (which seemed smart the first time I saw it, but just gets smarter all the time - that Clanzer is a practical guy!).  But, in other designs the distance is set.  I'm not an expert on magnetics (actually - faaar from it) but I suspect that raising the stators is not the same thing as backing them off.

[vipond50]

You know, to be honest, I wouldn't worry all that much about the minute difference between the rotor magnets' strength. As long as you bought them all from the same place in one batch, chances are that they should all be pretty much the same field strength. Most NdFeB magnets are sintered and magnetized in large batches which means that they should all have equal field strength. The only acception to this would be if you stressed one of the magnets after recieving it.

You're more likely to have larger tolerance errors in the machining of the rotor and stators than in the field strength of the mags. I'd concentrate more on the tuning between the rotor and stator magnets.

God Bless,
Jason O

Hello Jason
Yes I concur, but getting certified magnets in the so called spec and the cost, as u know would increase significantly. As far as getting the magnets from the same batch when ordered who really knows?
I also agree that the concept should be adjustable from as many facet as possible, then if and when the device is operating, measurement (data) can be obtained for future replication.

Regards
Bill

 

[ken_nyus]

And remember that Al did mention that 1 mm too close or too far and the effect was not present.

I believe he said that at a 4mm distance between rotor and stator, he felt air effects were creating problems.

At 6mm I believe he said it was too far for the effect, but 5mm worked for him.

(And as has been mentioned, out of a batch of 13 stators, a few(2?) worked easily, a few(2?) he could not get to work, and the rest were in the middle)

[lumen]

I'm new at this so is this a good place to post a new video?

[Bruce_TPU]

Since Alsetalokin mentioned that exact distance of the stator magnet to the rotor is quite important, I wonder how important slight differences between the individual rotor magnets strenghts are.
But how to determine the differences in the strength between the used rotor magnets?

And even more to the point: differences between the rated strengths and sizes of the magnets?  Most of the rigs I've read about seem to be using N42 magnets for both stators and rotor whereas, reportedly, Al used N35 magnets for his rotor mags.

You know, as cheap as the magnets are, it might not hurt to have an additional set of N35's to test with.  If someone could source it here in the U.S. 

No reason I can see, to take a chance of missing it.  We try with the N42's and if after tuning, testing, etc, we can not replicate, we try the N35's.  Just my thought for the day.   

This is so important, we can not leave any stone unturned.  IMHO

Cheers,
Bruce

[robbie47]

I'm new at this so is this a good place to post a new video?

Sure, we're all curious.

[lumen]

I think the video may be too big (140meg), it reset my connection.

[Omnibus]

@All,

I want to report that the initial experiments are very promising. After the initial spin a definite acceleration is observed which so far still cannot be sustained as long as @alsetalonkin's but the effect is definitely there. I will restrain at this point from posting a video or quantitative results which I will present to you later.

[Dyamios]

I think the video may be too big (140meg), it reset my connection.

You might want to try uploading it to google video or youtube; both services will automatically recompress the videos.