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

Author Topic: Tri-Gate Motor (TGM)  (Read 35237 times)

Magnerazz

  • Newbie
  • *
  • Posts: 11
Re: Tri-Gate Motor (TGM)
« Reply #15 on: August 04, 2008, 02:09:00 AM »
There are better sources than buying toy kits at retail. I bought 128 1/4" N42 grade neo cubes on sale from CMS magnetics a few months ago for less than $30.
These things are strong, but they can be glued down on many surfaces with a hot glue gun. It won't hurt them if you use the low temp hobby type but the glue is barely strong enough if they are too close together. They have many different sizes shapes and strengths at decent prices. The larger the quantity the better the discount. I use Vizimag, a $40.00 2d graphic finite element analysis magnetic field program to model different arrays, then export the array design into a paint program and print it out full scale. I use light card stock and fasten it to a sheet of modeler's plywood with permanent strength double sided tape or spraymount contact cement, then hot glue the magnets to the pattern. Makes for quick experimental prototyping.
www.magnet4sale.com  (edited to correct the URL)

Razz

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #16 on: August 04, 2008, 04:21:56 AM »
Thanks Razz!  Good prices!  I'm going to order the $15 set.

http://www.magnet4sale.com/home.php?cat=321

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #17 on: August 04, 2008, 09:03:18 AM »
I decided to go with the $25 set as you get 3 times more than the $15 set.. only $10 more and 3 times more.. can't pass on that deal.

Jason

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #18 on: August 04, 2008, 09:40:29 AM »
  The TGM pictured will not work. The gates would all be reached at the same time creating a lockup. There has to be more of one or the other to offset the gates meaning you need at least two to one and I would suggest having three or more to one so that three or more are pulling and or pushing one thru a gate.

I drew some lines to see if the gates are offset and it seems to me that they are.. one end of the rotor is at the tip of the gate and the other end is in the middle of two gates.  I have attached a graphic.

Jason


nightlife

  • Hero Member
  • *****
  • Posts: 1107
Re: Tri-Gate Motor (TGM)
« Reply #19 on: August 04, 2008, 06:14:31 PM »
Quote
I drew some lines to see if the gates are offset and it seems to me that they are.. one end of the rotor is at the tip of the gate and the other end is in the middle of two gates.  I have attached a graphic.

Jason

Hi Jason, it looks like you have much to learn about the gates. The design you posted has several gates but it has three large gates that all three arrays will hit at the same time. The three large gates are either at the entrances or at the exits depending on the polarity setups.

 If you go back and research some other magnet motor threads you will find out what I am talking about. I don't want to discourage you and I am only trying to help you save time because there are a lot of us who have and or are still working on such designs. We have all already found out that you have to have more of one array then the other array and you have to have at least a three to one ratio. It is much more complicated then what you have pictured.

 Keep on brainstorming, you may just figure out what we have not been able to. Good luck and keep us posted.


4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #20 on: August 04, 2008, 07:26:20 PM »
By gates are you talking about walls/stickies?

Thanks,
Jason

gwhy!

  • Full Member
  • ***
  • Posts: 173
Re: Tri-Gate Motor (TGM)
« Reply #21 on: August 04, 2008, 09:21:57 PM »
By gates are you talking about walls/stickies?

Thanks,
Jason

Hi Jason,
  Your gaphic shows that 1 arm will be going though each array while the other arm is jumping the gap which is a good start, but you will need at least 2 ( 3 would be better) arms going through the arrays for every 1 gap being jumped. unless your still going to try with shielding. Hope this makes sence. This is what nighlife has explained. I will see if I can work out a good way of showing you what we mean about the gap in a vid.

edit:     a gate is 1 tri-gate, an array is tri-gates connected together.

Cheers.

nightlife

  • Hero Member
  • *****
  • Posts: 1107
Re: Tri-Gate Motor (TGM)
« Reply #22 on: August 04, 2008, 10:10:19 PM »
Hi Jason,

 Each array has it's "own stickie" points within but each array as a whole has a wall.

 If you are planning on using shielding, you must note that shielding only bents the magnetic flux action and you will still have a equal pull and push.

 Magnets have a equal strength from the center and you can not have one side stronger then the other. There is always a center to a magnetic field and when shielding is used, you are only moving the center of the magnetic field.

 These next pictures should help explain better.

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #23 on: August 04, 2008, 10:27:02 PM »
Thanks guys!!  I understand better.  I ordered some magnets to experiment with.. so that should help me understand better also.

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #24 on: August 04, 2008, 10:34:37 PM »
I download the 30 day trial of Vizimag that Razz mentioned.. here are some graphics from playing with the program analyzing tri-gate arrays.

Jason

nightlife

  • Hero Member
  • *****
  • Posts: 1107
Re: Tri-Gate Motor (TGM)
« Reply #25 on: August 04, 2008, 11:05:53 PM »
Here is a design that I had drawn up some time ago. This is a three to one ratio and did not work do to the gate's attraction being stronger then the work being done but I am working on a updated version that I have not finished yet.

 

 

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #26 on: August 06, 2008, 04:26:04 AM »
I still don't have my magnets yet.. but anyone that has magnets, this might be worth trying.. according to this Vizimag software by having longer magnets at the begining and exit of the tri-gate array.. you should have no or little wall.. check out the flux field lines in the attached graphics..

Jason

Magnerazz

  • Newbie
  • *
  • Posts: 11
Re: Tri-Gate Motor (TGM)
« Reply #27 on: August 06, 2008, 02:29:43 PM »
I have found one of the most useful tools in vizimag is the force calculator. This translates the influence of the field on a ferromagnetic object into kinetic force expressed as x and y vectors. The vector sum  of these forces determine whether you have rotor motion in a favorable direction or not. The problem with any rotary model for a permanent magnet motor is that the vectors required to maintain motion are 180 degrees out of phase on the opposite sides of the rotor, so the fields if properly arranged on each side tend to cancel each other out and weaken the rotary motion. A magnetic motor is driven in exactly the same way as an electric motor, except that with the electric motor you can turn opposing fields on and off as needed.

Razz

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #28 on: August 06, 2008, 07:56:37 PM »
Thanks Razz!

I have attached a couple more graphics.. this time with the gates spread out.

Jason

4Tesla

  • Hero Member
  • *****
  • Posts: 946
Re: Tri-Gate Motor (TGM)
« Reply #29 on: August 07, 2008, 02:51:32 AM »
Thanks Razz!  Good prices!  I'm going to order the $15 set.

http://www.magnet4sale.com/home.php?cat=321

Forgot.. I want to let people know that this sites (magnet4sale.com) credit card process in only partially encrypted.. not good.. The good news is that you still can use PayPal which is safe.

Jason