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Author Topic: Magnetic flux control idea  (Read 21189 times)

Low-Q

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Re: Magnetic flux control idea
« Reply #30 on: December 15, 2018, 08:32:24 PM »
Here is a video showing the friction.
https://youtu.be/84ez50gaGEg


Vidar

Turbo

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Re: Magnetic flux control idea
« Reply #31 on: December 15, 2018, 08:43:13 PM »
That is gonna result in one big mess.

Low-Q

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Re: Magnetic flux control idea
« Reply #32 on: December 15, 2018, 11:10:08 PM »
Big mess, and hard to turn, weak ferrofluid, and weak steel rods. I came up with a similar design without ferrofluid that I will test with iron filled 3D-filament.
In the images below, I have two green wheels, one red shield. This red shield is fixed and stationary. Everything is printed in magnetic materials.
I might print the blue rods as well, but I already have magnetic (weak) steel rods already from the ongoing experiment.


The red shield, as well as the wheels, takes up magnetic fields. The thought is alike the ferrofluid experiment, that the wide side takes up more magnetic fields than the narrow side.
So wide side will ofcourse be more attracted to the magnet than the narrow side.
The steel rods is as usual more exposed at the narrow side, but hidden inside the shield on the wide side.


This experiment is much smoother. The wheels can turn freely with very little friction.
This will be a great benefit when I check how the rods behave in the magnetic field as I turn the green wheels by hand.
Also, I can test one steel rod at the time without ferro fluid leaking out - because it will not be ferrofluid in it.
Another benefit, is that without the ferrofluid, it will not be areas which harden or compress due to the magnetic field.


A narrow airgap between the wheels and the fixed shield will avoid friction (last image)


I think this experiment will be very similar, given the magnetic properties.


It will be friction somewhere, but that is not important.
Most important is that low friction is beneficial in view of the experiment's goals.


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Low-Q

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Re: Magnetic flux control idea
« Reply #33 on: December 16, 2018, 12:56:38 AM »
Complete structure.
The wheels are also made from magnetic material.


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Belfior

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Re: Magnetic flux control idea
« Reply #34 on: December 16, 2018, 02:07:41 PM »
Gabriel Kron said that Maxwell's laws break down, if the system has rotating parts like coils. Maybe angled magnetic fields do the same like in this machine?

He also said that if system theory shows that a system appears to have a negative resistor in it, the system will behave like there is negative resistor there. So the goal is not to find a negative resistor, but to build a system that appears to have a negative resistor in it. Making something that is not there to actually manifest the effect of such a thing. So in effect maybe you cannot build a negative resistor, but you can gain the effect of one

Low-Q

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Re: Magnetic flux control idea
« Reply #35 on: December 16, 2018, 02:53:29 PM »
I picked up that iron filament today. How cool is this? :)
500g plus the spool is lifted easily with a neo-magnet.

https://youtu.be/sId01hDLIRE


I'm printing parts for the new experiment. I hope it's possible to examine the function of it.


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Low-Q

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Re: Magnetic flux control idea
« Reply #36 on: December 16, 2018, 03:06:10 PM »
Gabriel Kron said that Maxwell's laws break down, if the system has rotating parts like coils. Maybe angled magnetic fields do the same like in this machine?

He also said that if system theory shows that a system appears to have a negative resistor in it, the system will behave like there is negative resistor there. So the goal is not to find a negative resistor, but to build a system that appears to have a negative resistor in it. Making something that is not there to actually manifest the effect of such a thing. So in effect maybe you cannot build a negative resistor, but you can gain the effect of one
Hi there!
I have no high hopes that this will run by itself. I build it to examine an effect that I cannot figure out. I am strictly bound to common physics, and the known laws of thermodynamics will some how account for the conservation of energy - in theory that is.


I'm not shure what Gabriel Kron meant with his statement. Is he implying that magnetic behaviour can cause things to loop itself without stopping? Like, uhh, overunity?


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Low-Q

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Re: Magnetic flux control idea
« Reply #37 on: December 16, 2018, 07:37:06 PM »
Then all the rods are printed. The first wheel is now in production. One wheel takes more than 4 hours. Next wheel tomorrow.
Then I'll be gone for two days bussiness trip. Continue with the shield on thursday. Then the shaft holders and bearings on friday. Hopefully finished during next weekend.


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Low-Q

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Re: Magnetic flux control idea
« Reply #38 on: December 17, 2018, 08:08:48 PM »
More updates. I managed to print the last wheel, and the ststionary shield already. Now, I'm printing holders for bearings in ABS material. These holders will be bolten on with M3 bolts - 6 on each wheel.


Vidar.

Low-Q

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Re: Magnetic flux control idea
« Reply #39 on: December 17, 2018, 09:01:52 PM »
Bearing holder in progress.


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Low-Q

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Re: Magnetic flux control idea
« Reply #40 on: December 17, 2018, 10:06:51 PM »
Oops! Need to adjust horizontal size compensation a bit negtive. The hole is too small. Measured 21mm, not 22...


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Belfior

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Re: Magnetic flux control idea
« Reply #41 on: December 17, 2018, 11:06:15 PM »
I need to fix the 3D printer at work. Using wooden shelves and drills to make stuff :(

telecom

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Re: Magnetic flux control idea
« Reply #42 on: December 18, 2018, 12:39:31 AM »
Oops! Need to adjust horizontal size compensation a bit negtive. The hole is too small. Measured 21mm, not 22...


Vidar
Looks awesome!
What make  of the printer you have?

conradelektro

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Re: Magnetic flux control idea
« Reply #43 on: December 18, 2018, 12:49:11 AM »
Many people missunderstand Magnetic shielding. There is no shielding just redistribution of magnetic lines. The fluid holds the rod more strongly when there is more fluid although there is less holding of the rods by the magnet. In sum the holding of the rods is the same with or without the fluid.

Low-Q

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Re: Magnetic flux control idea
« Reply #44 on: December 18, 2018, 09:34:32 AM »
@Belfior:
Yes, fix that 3D printer and start building stuff :)


@telecom:
Thanks! The printer is a RepRap based one, that is built from scratch. Using Marlin firmware. No fixed or locked settings. I can do whatever I want regarding printer settings :)


@conradelektro:
I have no overunity intentions. This is a closed system, so it cannot (according to established theories) produce its own energy.
I build it just to verify a problem that I cannot solve with my mind :)
The shield is redistributing magnetic fields, and that is the problem I need an answer to.
The stationary "shield" is preferred by the magnet more at the wide side than the narrow side, because it is more magnetic mass at the wide side. However, at the narrow side I got exposed moveable magnetic rods, that also is attracted to the magnet. Since these can move, but the stationary shield cannot move, I cannot figure out how the wheels will encounter equilibrium anyways. Because, as I think, the wide side where the rods are hidden, and the stationary "shield" is the closest magnetic path, attraction between rods and magnet is least. On the contrary, the narrow side has little stationary magnetic mass, but more rotational magnetic mass.
My main goal is to learn more about magnetism. Nothing else :)


Vidar