Working Magnetic Motor on you tube??

[Craigy]

someone mentioned making an mu washer , and putting it between the bearing and magnet which seems an easy test to do. Mu can be found in hard disk drives

I am buiding stators the same way as ClaNZers rotors , i.e with magnet on a brass axle, and the axle held at either end by bearings, the 20mm separation from the magnet to each bearing i hope will improve performance and inhibit braking , we shall see.

Edit: well it came out slopply in the photo , lol..

[Omnibus]

@MeggerMan,

I can?t agree more. Getting him to perform another test is crucial. What I did is I got bearings with the exact part number suggested. We have to double check that. He was saying that not all ring magnet-bearing pairs work but that was somehow in passing and I remained with the impression that he?s found it out just by trial and error. We have to be more scientific about that, though and find out what really is the issues with these bearings.

The proposed tests are good, especially the second one. Also, if we know the part number of the bearings one would think that they are uniformly manufactured and the discrepancies from bearing to bearing wouldn?t matter. That remains to be seen, though, by performing the test. The issue here is that we don?t want bearings which are entirely unaffected by the magnetic field, we want the exact bearing he was using with the extent of attraction and interaction necessary for the motor to spin.

[Omnibus]

@MeggerMan,

We also need to know what the gap is between the stator ring magnet and a rotor cylindrical magnet set in repulsion. Maybe the rotor magnet should be placed in a clear tube set on top of the ring. We'll have to see what @alsetalonkin's gap is and compare it to ours. That's in addition to other tests.

Maybe we should discuss and agree upon a very simple protocol for these several tests and then approach @alsetalokin with an asking to perform them.

We're presuming magnets of the same type have the same mass, of course. This should also be checked (I don't expect crucial variations that would invalidate the clear-tube field strength test).

[znel]

I noticed that some of the writers here have been talking about acceleration/deceleration of the stators in their MPMM replication.  Based on what I've observed and read, I really think people may be on to something by thinking about rotational inertia of the stator(s).  The two extremes are illustrated below

High rotational inertia (flywheeling) :  Easy to get it to get it to spin AGW in sync with Rotor but with no noteworthy phenomenon present

Low rotational inertia :  Difficult to keep spinning AGW with the Rotor, but demonstrating noteworthy phenomenon (sometimes)

I'm very much a newbie here and have enjoyed reading many of your postings (nearly everyone's)

It just seems that the "nimbleness" or the stators is very critical to get it right.  It might only work in a narrow range.  Since we did see OC's MPMM machine accelerate, I think pursuing the right nimbleness of the stator would more likely bear fruit than playing with different angles.  Try what you want (of course), but I think the vein of Gold is towards the matter of rotational inertia.  Time will tell.

Additionally, the whole Steorn saga that started more than a year ago probably started when superstrong magnets became readily available and people started playing with them.  This kind of strength is almost certainly necessary for the MPMM machines to work.  That being the case we may never have been able to make stators that are "nimble" enough to work well until just recently.  Otherwise our grandfathers would have made the MPMM decades ago and everything would have been different. 

I think it may be all about rotational inertia vs. magnetic strength of the stators

Well, theres my $0.02

Keep up the great work everyone.

  Finally... but that is only part of it... keep thinking !   Sometimes we tend to complicate simple issues...

LMR

[MeggerMan]

@Omni,

OK all 3 tests posted on the Steorn forum:
http://www.steorn.com/forum/comments.php?DiscussionID=59687&page=35#Item_45

Lets hope he does them.

Do we know the bearing part numbers that Al used then?

Regards
Rob