Working Magnetic Motor on you tube??

[lumen]

I believe if this unit can run as shown in the video by Al, then a possible reason is the increased bearing drag at the point when the magnetic flux is the highest. This would be when the rotor magnets are just passing the stator.
The stator ring magnets are very close to the bearings and under increased flux, from the rotor magnets,would turn harder. The video was an attempt to show the possible theory.

It's only a theory.

[DA]

@lumen
New video on YouTube. Possible explanation of the acceleration on the unit built by Al
http://www.youtube.com/watch?v=tknwdltnB6s

Great work, lumen. 

Does this mean the north pole of the magnet passes while the two north poles of the rotor do, and then the south pole with the south poles on the rotor, or is it north/south--south/north? 

With eight magnets on the rotor, and 8 north south poles, should we "expect" the stator to run at 4 times the speed of the rotor?  (8 divided by 2).

Your system to observe the acceleration and deceleration of the stator is brilliant. 

My next question is, can you adjust the position of the stator, to accelerate/decelerate more?
If so, does this correlate with a change in speed of the rotor and/or an increase in power?
Do you want more acceleration, or less?
If you can get a correlation between the position of the stator and the acceleration, it might be a way to fine tune the motor without just guessing.  Can anyone build a moveable stator, one you can move while you watch the screen?

Using a motor to make it run is a great idea.  Then you can hopefully tune it better and better until it will run without the motor. 

This thread is getting interesting.  Having so many minds thinking about the same thing at the same time, and sharing both successes and failures, and no one knows where it is going to lead. 


We may find that we can draw so much power off the stator's acceleration and deceleration, that running a motor to power the rotor is nothing.

[geodan]

I believe if this unit can run as shown in the video by Al, then a possible reason is the increased bearing drag at the point when the magnetic flux is the highest. This would be when the rotor magnets are just passing the stator.
The stator ring magnets are very close to the bearings and under increased flux, from the rotor magnets,would turn harder. The video was an attempt to show the possible theory.

It's only a theory.

that would suggest that we need a lot more nitty gritty detail about Al's construction of stator mags assyTo Replicate his rig...

I didn't see any other stators or dampers as in Al's vid... don't you think that they could be playing a role also?

do you have any plans of doing a more complete rep?

Thanks for the Vid, Very cool of you to share!!

[blue_energy]

@ All
We finally heard back from our CA machine shop and Jason's, Hank's and mine is guarenteed to be completed Monday and in to mail to us.  So I will wait patiently (Not! LOL) and play this weekend.  I am going to make a cheap and dirty one until mine arrives.  I need something to do, and have my magnets and bearings.  Besides, I want to loosen the bearings a bit.  I am not going to post any video, unless I see something interesting.  The good news, is that the one coming is to exact spec's and materials.  I just need to find some N35's.  I, like Rob, am worried about this.

If anyone has a link to some, of our spec'd size, please post for all of us replicators.  Thank you.



Cheers,

Bruce

Hi Bruce,

I saw these and they looked like they might suffice.  They have one that's 6mm X 15 and N35 that seems to be just about how Al's were described.

http://www.monstermagnete.de/catalog/advanced_search_result.php?keywords=Z06

[FunkyJive]

I was glad to see that someone has recognised and commented upon the drag imposed by metal adjacent to the cylindrical magnet - as per one of my former posts - thank you Lumen 

There's understandably lots of effort to accurately duplicate what has already been demonstrated, though would well be worthwhile at-least minimising the possible negative influences of other factors should repeated attempts fail to get the motor to work.

Also consider that for light roller bearings induced current will create a heating effect. Should this, is conjunction with the expansion coefficients of the balls and runners, create eventual areas of increased conduction across the bearing surface (at considerable current), then this could explain the slow-down and stoppage after running for a period of time due to the increased Lenz effect.

It might also explain why these motors can be immediately re-started after stopping, as a fairly rapid cool-down after stopping (e.g. through the shaft or magnet, etc) could then require a further period of operation before enough heat is generated with the added conductivity and drag once again realised.

Has anyone tried ceramic bearings, or at-least bearings with ceramic balls in attempting to avoid possible variations in conduction through the bearing once heated and thereby stabilising running parameters?

Finally, although the design of the motor clearly holds promise, it's equally possible that the surface electrical conductivity of the neodymium magnets is itself creating added drag in response to field deflection in operation.

Time will tell I guess, but FWIW food for thought.


FunkyJive