Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search
« previous next »
Pages: 1 ... 62 63 64 65 66 [67] 68 69 70 71 72 ... 205   Go Down

Author Topic: Working Magnetic Motor on you tube??  (Read 1335635 times)

skymovingcloud

  • Newbie
  • *
  • Posts: 7
Re: Working Magnetic Motor on you tube??
« Reply #990 on: January 17, 2008, 12:50:54 AM »
Quote from: sterlinga on January 17, 2008, 12:38:28 AM
Quote from: Omnibus on January 16, 2008, 10:29:48 PM
@All,

I want to report that the initial experiments are very promising. After the initial spin a definite acceleration is observed which so far still cannot be sustained as long as @alsetalonkin's but the effect is definitely there. I will restrain at this point from posting a video or quantitative results which I will present to you later.

Posted a feature page here:
Replications > Omnibus' Replication of the MPMM - "After the initial spin, a definite acceleration is observed, which so far still cannot be sustained as long as alsetalonkin's but the effect is definitely there." (Jan. 16, 2008)
http://peswiki.com/index.php/OS:MPMM:Replications:omnibus


Photo, video, additional info would be nice, so I could feature this in my news.

@Sterling,
the link is malformed
http://"http//peswiki.com/index.php/OS:MPMM:Replications:omnibus%22

 :)
Logged

Yadaraf

  • Full Member
  • ***
  • Posts: 212
Re: Working Magnetic Motor on you tube??
« Reply #991 on: January 17, 2008, 12:59:44 AM »
Quote from: unzapped on January 14, 2008, 11:01:10 PM
Hello all here is my long awaited quote for parts as spec'd in the drawings for the whipmag replication...

>>Hi Jason.

>>We are quoting your parts, 10 assys for $83.75 each.

>>Thank you
>>Terri @ C&D

They are a little more expensive that I originally thought...

In the interest of getting something out of this....

If I get 9 orders... I can get them to you for $94 each plus shipping...
this will get me one for myself and One for each of the 9 lucky folks that want to pay $94 US for them.

In the unlikely event 9 of you are still interested, I have paypal, live in NY, and will take interest as it comes via PM so as to not clutter this thread with this...
I truly thought I could get these done cheaper, it is what it is...

I do know that the quality of the parts from this machine shop is superior, although not sure for a hundred bucks, you will still need to have bearings, magnets, and shafts.

Personally I will probably wait until, clanzer replicates, then build a giant one based on that.
Thanks
UZ

@Unzapped

I am interested in purchasing an assembly.  Any news?

Yada
..
Logged

m0thman

  • Newbie
  • *
  • Posts: 10
Re: Working Magnetic Motor on you tube??
« Reply #992 on: January 17, 2008, 01:03:19 AM »
Can anyone imagine this taking place 20 yrs ago (I know.. most of you aren't much older!) before mainstream Internet access and such a perfect medium for sharing information?
Logged

lumen

  • Hero Member
  • *****
  • Posts: 1388
Re: Working Magnetic Motor on you tube??
« Reply #993 on: January 17, 2008, 01:15:32 AM »
New video on YouTube. Possible explanation of the acceleration on the unit built by Al.
Logged

lumen

  • Hero Member
  • *****
  • Posts: 1388
Re: Working Magnetic Motor on you tube??
« Reply #994 on: January 17, 2008, 01:20:46 AM »
Logged

RunningBare

  • Hero Member
  • *****
  • Posts: 809
Re: Working Magnetic Motor on you tube??
« Reply #995 on: January 17, 2008, 01:20:58 AM »
.
« Last Edit: January 17, 2008, 01:53:32 AM by RunningBare »
Logged

RunningBare

  • Hero Member
  • *****
  • Posts: 809
Re: Working Magnetic Motor on you tube??
« Reply #996 on: January 17, 2008, 01:30:20 AM »
Quote from: lumen on January 17, 2008, 01:20:46 AM
Check it out!
http://www.youtube.com/watch?v=tknwdltnB6s

Thank you luman0, you appeared to have proved my point about the stator accelerating and decelerating over one cycle.
It was only a theory I had, so thanks very much for this.
Logged

hydrocontrol

  • Sr. Member
  • ****
  • Posts: 281
Re: Working Magnetic Motor on you tube??
« Reply #997 on: January 17, 2008, 01:47:36 AM »
Quote from: sterlinga on January 16, 2008, 11:41:22 PM
Quote from: hydrocontrol on January 16, 2008, 02:47:09 AM
Finally got some shop time. I know it is not an exact replication. [...]. I also found it spins better one direction (CCW) then the other (CW). Not sure why.. Lots of playing to do before I get more shop time. At least it is a start..

I posted a feature page on this:
Hydrocontro's Replication of the MPMM magnet motor - User "hydrocontro" proposes that this counter-rotating stator design accomplishes what he observed in another magnet motor design he built which only worked if the stator were held by hand.  He also observes that his MPMM replica "spins better one direction (CCW) then the other (CW)".
http://peswiki.com/index.php/OS:MPMM:Replications:hydrocontro

It would be nice if we had more info
- how fast did it run?
- how long?
- did it accelerate
- video

Thanks

Sterling

Well Thanks Sterling... No sure for what. Not going for any recognition effect. Just having a bit of machining fun. Certainly better than what is on TV. A bit jumping the gun there on a write up... I think you are reading more into my posting then intended or deserved. My old wooden magnet wheel I built about 7 years ago. Nothing special. It ran about 100 rpm.. guessing at that as I did not have a tachometer. Used Radio Shack ceramic magnets that cost a buck apiece. Those ones are pretty strong. Had around 25 or so bolted to the top of the wooden wheel. Looked like Stonehenge on top of a wood disk.  :D It ran as long as I pumped it by hand with a 4 Radio Shack magnets stacked up. It did not accelerate. Well it did if I pumped it faster. Gets kind of tiring pretty fast.  No video as I did not have a video camera back then. I may have a picture somewhere. Like I said . Nothing special. No precision workmanship. It is what you do with a 2x14 about 5 foot long, a pencil compass, a saber saw. a couple of Ace Hardware flanged bearings, a big bolt to go through the bearings, twenty 1 inch angle iron, a bunch of glue and a box of wood screw. Basically something to learn from.

My current replication.. Well I was playing around with the air gun driving the main rotor and I guess (no tach yet. on order) it was going around 1500 RPM. It was really whining. So fast that two of the magnets are now 'lost in the shop'. WARNING.. DANGER Will Robinson  ;)  this setup can make serious and harmful projectiles. There is a big dent in one wall where a magnet hit first. After that I heard it bounce around. I suppose it is stuck to some machine here. As your mother told you.. You can put an eye out with that thing. Once again I was driving it with an AIR GUN to see how fast it would go and how balance it was. It was doing really good. Hindsight.. a little stupid.. okay.. a big stupid. Luckly I ordered 10 so I still have a couple replacements.  :P  No acceleration.. No video of my stupidity. I'll get there.. patients please..

HydroControl.
Logged

Bruce_TPU

  • TPU-Elite
  • Hero Member
  • *******
  • Posts: 1437
Re: Working Magnetic Motor on you tube??
« Reply #998 on: January 17, 2008, 01:53:41 AM »
Quote from: Omnibus on January 16, 2008, 10:29:48 PM
@All,

I want to report that the initial experiments are very promising. After the initial spin a definite acceleration is observed which so far still cannot be sustained as long as @alsetalonkin's but the effect is definitely there. I will restrain at this point from posting a video or quantitative results which I will present to you later.

@Omnibus
Take your time Omnibus.  Very encouraging news, indeed.

@ 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
Logged

Lakes

  • Sr. Member
  • ****
  • Posts: 383
Re: Working Magnetic Motor on you tube??
« Reply #999 on: January 17, 2008, 02:01:35 AM »
Logged

lumen

  • Hero Member
  • *****
  • Posts: 1388
Re: Working Magnetic Motor on you tube??
« Reply #1000 on: January 17, 2008, 02:06:45 AM »
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.



 
Logged

DA

  • Newbie
  • *
  • Posts: 31
Re: Working Magnetic Motor on you tube??
« Reply #1001 on: January 17, 2008, 02:21:07 AM »
@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.
Logged

geodan

  • Jr. Member
  • **
  • Posts: 79
Re: Working Magnetic Motor on you tube??
« Reply #1002 on: January 17, 2008, 02:24:38 AM »
Quote from: lumen on January 17, 2008, 02:06:45 AM
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!!
Logged

blue_energy

  • Jr. Member
  • **
  • Posts: 52
Re: Working Magnetic Motor on you tube??
« Reply #1003 on: January 17, 2008, 02:25:20 AM »
Quote
@ 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
Logged

FunkyJive

  • Jr. Member
  • **
  • Posts: 73
Re: Working Magnetic Motor on you tube??
« Reply #1004 on: January 17, 2008, 02:27:44 AM »
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
Logged
Pages: 1 ... 62 63 64 65 66 [67] 68 69 70 71 72 ... 205   Go Up
« previous next »