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Author Topic: Magnet Motor from Argentina, part2  (Read 312871 times)

cherno

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Re: Magnet Motor from Argentina, part2
« Reply #45 on: April 17, 2006, 02:44:52 PM »
Hi:

Here you have a compressed version of the video (it is encoded with Xvid, but DivX should be able to handle it).

Hope this helps

Duranza

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Re: Magnet Motor from Argentina, part2
« Reply #46 on: April 17, 2006, 03:19:59 PM »
That pretty much describes my small prototype.. i'm still trying to get a camera to show it to you guys.. mine has 10 stator lifting arms and i'm using 1/8 by 1/8 neos.. It behaves just like Nastrands.. when i put one arm down it moves the rotor CCW 2-3 arms. My rotor does not have a lifting wheel either.

Nastrand2000

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Re: Magnet Motor from Argentina, part2
« Reply #47 on: April 17, 2006, 06:29:10 PM »
is the above video playing for others that have downloaded it.....it doesnt seem to be playing for me

Tink

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Re: Magnet Motor from Argentina, part2
« Reply #48 on: April 17, 2006, 07:09:05 PM »
Yes it works.
I use BS player or mediaplayer classic.

AlexMalex

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Re: Magnet Motor from Argentina, part2
« Reply #49 on: April 17, 2006, 08:30:20 PM »
In my replication of torbay's motor there is no problem with "lever up", but it seems to very hard put magnet back - the current rotor segment and nearby stator magnets repulse "flying" magent.  In result all three stator magnets (according to torbay's patent picture) flying and cycle is over. :(

p.s. sorry for my english

DarkLight

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The Principle
« Reply #50 on: April 17, 2006, 10:01:51 PM »
The principle of Torbay motor is the same as that of asynchron electro motor. There is a rotating stator magnetic field (here achieved by moving the stator magnets up and down while the rotor is turning)  and rotor that follows this rotating stator field. The construction has great torque (about 7 Nm with bar rotor magnet and half of stator magnets moved up) , but it has very low turning speed because of moving stator magnets up and down. Let the motor turns with 600  rpm only. This is low speed. Even lower than that of typical electro motor (1500 to 3000 rpm). But even with that low rpm we have to move up and down each of stator magnets  10 times per second!
To do that we must move stator magnets with very big acceleration, because we have to put them up and then down in a 1/20 of a second!
That requires great force. 
What is the net power of a motor with torque  M = 7 Nm   that turns with    n = 600 rpm

N = F*V = M * w = M*2*PI*n/60

N = 7*2*3.14*600/60 = 439.8 W

Even with that great torque of 7 Nm  motor will have low power because of  it's low rpm.
And what about amortisation of elevation ramps for stator magnets, and for other  elements  that have to move at 30 , 40 mm  in less than 1/20 of a second?

lancaIV

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Re: Magnet Motor from Argentina, part2
« Reply #51 on: April 18, 2006, 12:37:00 AM »
Very well thought,Darklight !

Why do the Lutec-company-members need so much time(6 years+X),
for a "only" 1KW-plant ?
Please remark also the material input !

Sincerely
            de Lanca

   

rotorhead

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Re: Magnet Motor from Argentina, part2
« Reply #52 on: April 18, 2006, 05:42:18 AM »
DarkLight,

439 Watts would power my laptop, coffepot, and several fluorescent lamps. I don't need much more to make me happy.

ewitte

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Re: Magnet Motor from Argentina, part2
« Reply #53 on: April 18, 2006, 03:01:28 PM »
400-600RPM with a 36" or so rotor with more magents would put out a LOT more power ;)  Just use it on a charge controller for a battery bank and run everything off of an inverter also connected to the battery bank.  Someone get something out I can easily understand and I'll look into building something with my 24 1.5"x1"x0.25" N48 magnets. 

madmaxx

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Re: Magnet Motor from Argentina, part2
« Reply #54 on: April 18, 2006, 06:39:42 PM »
One of the problems with this design is that the stator magnets will still find rest at mid point of the rise. Like was stated above it's easy to raise them, but how do you put them back down? If this motor does indeed rotate as RPM increases the stator will float at mid point and you will loose torque. If more force is needed to put the stator back in position for next revolution I'm afraid our end result might be Zero work.

It's worth a try. I'll build one too for fun. I was trying something simular with hinges, but it found rest. Perhaps springs or small magnets could speed the rise and fall of the stator. Or maybe another cam that forces it back down. You could create another level and stack the machine so that the upper level pushed the stator back in place.

Jdo300

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Re: Magnet Motor from Argentina, part2
« Reply #55 on: April 18, 2006, 07:13:18 PM »
Hi Madmaxx,

The last method you mentioned is pretty much what Torbay did with his motor. It is really quite simple. If you look at the cutaway view of the motor, you can clearly see (and it's labeled) a piece of bent metal sticking out on the left side of the rotor disk which acts like a ramp and eases the stators back down into position as it slides over the top of them. This is perhaps the simplest way and will prevent the need for lots of extra mechanical pieces.

The basic breakdown is this, there are a set of rollers on the underside of the rotor which roll on ramps underneath each stator to lift them up. As we saw in Nastrand2000?s video, the stators will automatically push each other up in a sort of bubble-like way as one stator is lifted. The metal piece on the rotor would ease the stators back down again as the disk goes. But it shouldn't take much energy to do this because in effect, we are not really forcing the stator back down at all; we are just causing the bubble of lifted stator magnets to move around the stator ring. So in a way, pushing one stator down actually helps to lift the next stator.

God Bless,
Jason O

madmaxx

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Re: Magnet Motor from Argentina, part2
« Reply #56 on: April 19, 2006, 05:12:18 PM »
Here's a mockup. But there's not enough torque to lift anything. It will turn if you lift ach stator arm.

Sugestions? I know it doesn't have rollers, but even if it did there's not enough torque.

cesarc

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Re: Magnet Motor from Argentina, part2
« Reply #57 on: April 19, 2006, 05:51:49 PM »
Hi.
I think that the diameter of rotor should be more great.

ewitte

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Re: Magnet Motor from Argentina, part2
« Reply #58 on: April 19, 2006, 08:01:06 PM »
That rotor looks REALLY far away from the other magnets.

AlexMalex

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Re: Magnet Motor from Argentina, part2
« Reply #59 on: April 19, 2006, 10:31:05 PM »
madmaxx,

Magnets of rotor should be bigger, better if same as stator magnets. Remember patent - 3 segments of a stator have a same rotor segment size. But in your prototype size of rotor segments is very small. In result, every stator magnet repulse only front side of a rotor magnet, but attract (or repulse in wrong direction) left-right sides, and same sides of nearby rotor magnets. Make rotor bigger, use same magnets as in stator, orient every as others, place rotor magnets closer to simulate circle magnet with solid repulse surface. When all stator magnets down, rotor should rotate easily, becouse all repulse forces in balance, but if one magnet levered - your fingers fiil the torque near gap. But problem is to put down the flying magnet, becouse 3 forces repulse it - one from rotor, two from nearby stator magnet. It seem that sum of these 3 forces are same which rotate rotor to gap. I'm afraid that metal arm above rollers in torbay's  demonstration model can't overcome these repulse forces. Where the video of working model? I'm begin to doubt on this matter.
       

Here's a mockup. But there's not enough torque to lift anything. It will turn if you lift ach stator arm.

Sugestions? I know it doesn't have rollers, but even if it did there's not enough torque.
« Last Edit: April 19, 2006, 10:42:26 PM by AlexMalex »