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Author Topic: Working Magnetic Motor on you tube??  (Read 1328742 times)

Craigy

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Re: Working Magnetic Motor on you tube!!!
« Reply #45 on: January 05, 2008, 05:50:19 PM »
the pdf is right , i got the magnet codes off of the thread and it was a time consuming business, not cubes , but as clanzer and yourself pointed out

CLaNZeR

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Re: Working Magnetic Motor on you tube!!!
« Reply #46 on: January 05, 2008, 06:04:40 PM »
I have gone for a 85mm rotor and think the magnets can be either Rod or rectangle or cubes stacked.

Would you agree with the quick measurments below before I mill this out?

Removed as was WRONG!!!!
« Last Edit: January 05, 2008, 06:36:00 PM by CLaNZeR »

magpower

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Re: Working Magnetic Motor on you tube!!!
« Reply #47 on: January 05, 2008, 06:11:53 PM »
Your rods look small to me, 10mm long. Looking at video they look like 3/4" long or even 1", maybe I am wrong!

wayne

MeggerMan

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Re: Working Magnetic Motor on you tube!!!
« Reply #48 on: January 05, 2008, 06:15:09 PM »
Hi,
This is a very hot project at the moment, I can see a lot of people will be replicating this.
The 8 rotor magnets look like rod type not slab and by pasteing the image into PSP and knowing the radius I have calculated the size of the rod magnets to be:
0.54" or 13.78mm length
We know the thickness is 0.25" or 6.35mm

Rods are polarised through the length.

Getting the diamagnetic polarised stator magnets is tricky on the UK , so I will need to order these from the US.

The bearings look like model RC racing car bearings, so I guess ebay would be a good source for these.

Regards
Rob

TheOne

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Re: Working Magnetic Motor on you tube!!!
« Reply #49 on: January 05, 2008, 06:20:19 PM »
CLaNZeR:

Ok I taked a good look about the size, sound like my 22" minoteur in 1600x1200 give me the exact same size from one of the photo

Here some of the dimension:

I was wrong with the rotor magnet

rotor magnet: 3/16" dia. x 1/2" thick (http://www.kjmagnetics.com/proddetail.asp?prod=D38)
outer magnet: 1/2" od x 3/16" id x 1/4" thick (same as the begining, http://kjmagnetics.com/proddetail.asp?prod=R834DIA)
rotor size: 5 1/2"
frame size: 7 1/2"

robbie47

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Re: Working Magnetic Motor on you tube!!!
« Reply #50 on: January 05, 2008, 06:34:11 PM »
Deleted
« Last Edit: January 06, 2008, 10:14:46 AM by robbie47 »

CLaNZeR

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Re: Working Magnetic Motor on you tube!!!
« Reply #51 on: January 05, 2008, 06:35:10 PM »
CLaNZeR:
Ok I taked a good look about the size, sound like my 22" minoteur in 1600x1200 give me the exact same size from one of the photo
rotor size: 5 1/2"

The Rotor size I took as being as he quoted by Alsetalokin :

The rotor is 3/4 in thick piece of HDPE plastic, 2 7/8 in radius

I just realised he said RADIUS and not Diameter grrrrrrrrrrrrrr so the Rotor should be

So am I correct in thinnking 2 7/8 =73mm Radius which is 146mm Diameter and hence 5.7 inches?

God my maths are bad hehe
« Last Edit: January 05, 2008, 06:58:13 PM by CLaNZeR »

Jdo300

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Re: Working Magnetic Motor on you tube!!!
« Reply #52 on: January 05, 2008, 06:47:23 PM »
Hi Omnibus & Everyone,

Glad to see so many people jumping on this project! Sometime this afternoon/ evening, I'll make some CAD drawings and dimensioned diagrams for the exact specs for the whole thing. I'll also give the exact sizes for the magnets (I can scale the images in CAD and compare to the given dimensions to get the precise sizes). For those who plan on doing any CNC work, let me know what format you prefer and I'll post. I can produce both 2D and 3D models of the thing.

BTW, does anyone have a clear idea of how he had the rotor mounted? I'm still a bit confused by the original description.

God Bless,
Jason O

TheOne

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Re: Working Magnetic Motor on you tube!!!
« Reply #53 on: January 05, 2008, 08:17:48 PM »
Hi Omnibus & Everyone,

Glad to see so many people jumping on this project! Sometime this afternoon/ evening, I'll make some CAD drawings and dimensioned diagrams for the exact specs for the whole thing. I'll also give the exact sizes for the magnets (I can scale the images in CAD and compare to the given dimensions to get the precise sizes). For those who plan on doing any CNC work, let me know what format you prefer and I'll post. I can produce both 2D and 3D models of the thing.

BTW, does anyone have a clear idea of how he had the rotor mounted? I'm still a bit confused by the original description.

God Bless,
Jason O

Sure that can help a lot, its bad for me that my magnet are way to big, I will still try with my magnet, I should use them , they are lying all around doing nothing, they need to do some work now :)

Omnibus

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Re: Working Magnetic Motor on you tube!!!
« Reply #54 on: January 05, 2008, 08:31:50 PM »
Hi @CLaNZeR,

Happy New Year and good luck in this new exploration. Doesn't this remind you of the experiments gaby suggested and you began exploring with interest? I think there's even a thread here on that. Isn't that amazing?

CLaNZeR

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Re: Working Magnetic Motor on you tube!!!
« Reply #55 on: January 05, 2008, 08:40:21 PM »
Now I think I have the Rotor Correct  ;D

I personally do not think the size matters too much, the effect is the important thing here maybe.
I am going to use 3 * 6.35mm(1/4) cubes stuck together for each Rotor magnet place, as I have these here.

(http://www.overunity.org.uk/ocpm/rotor2.jpg)

@JDO that would be great if you could do some DXF files, that we can then just turn into Gcode for milling :)

@Omnibus, Happy New Year!
This sort of ties in with a combination of the Kiss Motor and Gaby's ideas, weird how these things come together.
This time lets hope someone can replicate it!!

Cheers

Sean.

CLaNZeR

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Re: Working Magnetic Motor on you tube!!!
« Reply #56 on: January 05, 2008, 08:46:59 PM »
The 8 rotor magnets look like rod type not slab and by pasteing the image into PSP and knowing the radius I have calculated the size of the rod magnets to be:
0.54" or 13.78mm length
We know the thickness is 0.25" or 6.35mm

Hi Rob

13.7mm would be two cube magnets, I have used 3 for the moment, but I suppose the nice thing about using Cube magnets is that we can take or add to change the length to see the difference.

Lets hope the USA are quick with the Stator Magnet deliveries, if they do not run out of stock too quick  ;D

Cheers

Sean.

Jowik

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Re: Working Magnetic Motor on you tube!!!
« Reply #57 on: January 05, 2008, 08:47:38 PM »
Here's something worth noting and may assist those who are trying to build one.

I built a rig similar to this and I discovered that by using a motor to rotate the magnet stator, I can get it to sustain a spin "gearwise" and "counter-gearwise".  The part that interests me is that any magnet I use will get the rotor to spin in either direction, and a variety of factors affect the speed such as how much of an effect the magnet has on the motor, etc.  No damper, just one rotor and one stator.

Given that I don't have any extra bearings, the next thing I had was a motor to test this out.  The other interesting thing is that this rotor is a POS.  I suspect that someone with a bit of resources and skill can set something similar and replicate.  I anticipate that the least amount of losses from friction, etc this thing may self sustain.  Thought I am not holding my breath... Time will tell.  I hope something good comes of this.

Cheers.

CLaNZeR

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Re: Working Magnetic Motor on you tube!!!
« Reply #58 on: January 05, 2008, 09:04:32 PM »

BTW, does anyone have a clear idea of how he had the rotor mounted? I'm still a bit confused by the original description.

He is just using flange bearings inserted into the Rotor and a Brass bar inserted in the base.

To cut my friction losses I have gone for top and bottom RC bearings with a Top Cross Bar.
I have also allowed for the Stator magnets to be slid on slots to vary the distance and also curved slots to position the Judson Dampers.

(http://www.overunity.org.uk/ocpm/base1.jpg)

It will probably make more sense when the base has finished cutting out, will post a picture too show what I mean.

Cheers

Sean.

Omnibus

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Re: Working Magnetic Motor on you tube!!!
« Reply #59 on: January 05, 2008, 09:50:45 PM »
This is off-topic. Probably we should ask Stefan to merge the two or three threads discussing this topic or maybe some would prefer to have it separated--the technical issues in one thread and the rest in another. What do you think? Too many places discussing this important endeavor and one can miss something substantial.