Sticky point again

[CLaNZeR]

TheVorlen

Below is an example of one of my wheels cut out of Plexiglass.
I have a number of magnets in a 180 degree arc with each magnet moving in a little around the curve.
I should really counter balance it with a weight on the other half, but the bearing I am using is so loose it does not need it.
All the North Poles are facing outwards and the magnets are as close as I can get them


Next below I place a powerfull ring magnet towards it with North facing towards the north facing arc magnets.
It takes off with a lot of power and usually does 3 full rotaions before hitting the sticky point.


Below again you can see the approx sticky point, it is just before the beginning of the arc. The north against north repel is that great that it cannot get beyond it.



If I dip the magnet at this point and bring it back up just after the sticky point the wheel gains speed and power and flies at great speed.

Regards

Sean

Clanzer,

Thanks so much for your reply!

I think I am understanding the concept of what a sticky point is (literally a point where the magnets themselves cause the wheel to stop) but not the CAUSE or REASON sticky points do what they do.

For example, take the image in the start of this thread. If you removed the iron bar and just left the magnet on the stator and the magnet on the rotor would there be a sticky point? If so, where? What would be causing it?

The problem probably is that I have not expeirmented yet, but in my mind in the above setup there should be no sticky point. Both magnets should repel each other, cause the wheel to move, and in a complete setup the wheel would accelerate.

I'm just not understanding the sticky point in this device.

Also, could explain to me exactly what is a magnetic flux gate?

[CLaNZeR]

The outside world will think you are mad, but within these forum walls you will be the norm LOL

Amen my brother. lol

ROFL, when they start handing out the awards you got my vote mate!!!!

[Kator01]

Hello,

yes, it is clear, you initialize the rotation approaching from above with the ring-magnet. In this initializing situation you are not close enough that the opposing poles stop the rotation at this sticky point-coordinate.Then, if you have come down with the ringmagnet to a level of rest, with each full rotation of the three rotations it has to pass the sticky point. At first you hardly will notice it but it slows down a bit as it will do while passing this sticky point the second time, again slowing down and finally it has lost so much of the initial-energy it stops. See what I mean.
In the hamel-devices you find that there is a tumbling movement of the the conical cylinders. So you have to tilt the ringmagnet in an oscillatory manner. How much energy that costs in comparison of the spin-energy ? I don not know.

Kator

[thevorlon]

Clanzer,

Thanks for the visuals. Let me see if I understand this and ask a couple questions.

If you move the ring magnet on the stator near the magnets on the rotor then the rotor will start moving, correct?

However, the rotor will only move far enough for the FIRST magnet on it to once again reach the RING magnet, and then it will stop moving, correct?

What happens if you put magnets *all* the way around the rotor? If it was one complete loop woundn't the rotor just keep spinning? Have you tried that before

Also, what happens when you have more than one magnet? Does that help or will it just create yet another "sticky point" that interferes and causes the rotor to stop?

Once again, thank you tremendously for your help. I sincerely appreciate it. I'm doing my best to try and understand what's happening here.

[CLaNZeR]

As shown in the second picture as soon as you place the magnet in position, the wheel will take off and spin yes.
Because I am using strong magnets, the stator will spin atleast 3 full 360 degrees before hitting the sticky point, as Kator01 pointed out it slows down for each full revolution.

If you place the magnets in a closed loop 360 degrees all the way around, it does not seem to do alot.
As you can see the aluminium strip is a bit buckled as I had tried this and brought it around to a complete 100mm circle.
It does not do alot in this configuration without alot of hand movement.

In my experiments it seems you need the offset to get the motion.
So hence when you go for the 360 degree offset, you end up with the end of the spiral tucked up further into the center of the wheel and hence the sticky point seems to increase and reduces it to maybe 1 or 2 full revolutions.
By using the 180 degree arc you will maybe get 3-5 full revolutions before it stops.

I have placed a second wheel above the wheel with the arc, with magnets spaced evenly around and again it eventually stops.

I have tried many configurations from all angles and still the dreaded sticky point comes bacl to haunt you.

A side point to this, has anyone noticed that playing with strong magnets, after a few hours at a time seems to give you Sea Legs???
(Sea Legs is a effect that you get when you have been out on a boat all day and when you get off the boat to dry land, you stil feel like you are still rocking to the movement of the waves!!!)

Regards

Sean.

Clanzer,

Thanks for the visuals. Let me see if I understand this and ask a couple questions.

If you move the ring magnet on the stator near the magnets on the rotor then the rotor will start moving, correct?

However, the rotor will only move far enough for the FIRST magnet on it to once again reach the RING magnet, and then it will stop moving, correct?

What happens if you put magnets *all* the way around the rotor? If it was one complete loop woundn't the rotor just keep spinning? Have you tried that before

Also, what happens when you have more than one magnet? Does that help or will it just create yet another "sticky point" that interferes and causes the rotor to stop?

Once again, thank you tremendously for your help. I sincerely appreciate it. I'm doing my best to try and understand what's happening here.