@smOky2,

There's no doubt in my mind, and I mentioned that several times, that the rpm measurements in the first video are sloppy as sloppy can be. So, point 2) is settled, I think. Regarding point 1), aside from a blatant fraud, subtle unsuspected by @alsetalokin EM sources are to be excluded out of hand. If you disagree, demonstrate how this can happen. In saying that I also admit that no one, including the perpetrator, understands what's going on. That has been something he has hit upon accidentally and I bet you he isn't able to reproduce himself. Wonder if even talking to him would help.

I guess it's time to add my report...

I have a "standard" HDPE rotor - 144mm wide, 18mm thick, unknown weight, but assumed to be slightly overweight, given reports from others here. I am using N38 1/2x1/4 cylinder rotor mags. There is a 1/2" hole in the center of the rotor, and I have 2 1/2x3/16 bearings in there, with a stainless (non-magnetic) bolt as the axle.

The base is non-standard, an HDPE base.

Standard delrin stators, with the standard mags in them. For stator bearings I have 1/2x1/8x0.171 all steel bearings, and I am using a SHCS screw (top filed down about half height) to hold it down, with a small washer under the whole thing to give the slight clearance for rotation.

That's the setup, now the results...

I am only using a single stator, no dampers.

No acceleration to report, but as others have mentioned, this rig is interesting and seems like it wants to take off and go, but just won't.

It took me a while to get and recognize AGW, and I had to mark the stator half black to help in visually recognizing this. There is also a different sound to AGW that you will learn to recognize.

Once I get AGW, I can carefully speed up the rotor by hand. I have no tach to report RPMs with.

When I whip the rotor up by hand it often seems like I get a second or two or three of maintained RPM, but this is just going by sound. The rotor is completely silent, but the stators are very noisy when turning near the rotor.

I have several positions for the stators, and for me the closest (about 3-4mm) and the farthest (about 5-6mm) seem to work best. The closest position is the easiest to get initial AGW synch with, but it is the noisiest and has the most effect on the bearing. The farthest position can be harder to get initial synch with, but I can really spin up the rotor. With less effect on the bearing, when I really get a good fast spin, the bearing reaches a spot where it quiets down and the rig seems to coast for a few seconds before starting to slow down, but I need real measurements to know for sure. 

Overall it is a very interesting rig, and I think my next step might be to drill some holes in the rotor to lighten it up (maybe get a scale first!)

Quote from: ken_nyus on February 25, 2008, 06:07:51 PM
I guess it's time to add my report...

The rotor is completely silent, but the stators are very noisy when turning near the rotor.

This is caused by the outward force vector on the stator shaft during the flux compression stage.
the bearing pushing against the screw, i havent found a good way to "cushion" this...

@smOky2,

The question is should it be cushioned? That clattering sound is one of the signature features of @alsetalokin's first video and supposedly an attribute of an accelerating rotor, don't you think?

I should also add that I tried one bearing, after soaking in Liquid Wrench. I felt the results were worse.

I also tried some bearings I have the same size but with ceramic balls, and these I could not get to work at all. They did not seem to be free enough.

Right now I have one steel bearing, lubricated the way it came from the factory that gives me pretty good AGW results.