Here it is.
The complete Autocad drawings and Mounting instructions on the F.B.D.I.S.S.M.

For those who don't have Autocad, can you save your work as a jpeg?
Paul.

Quote from: Honk on November 09, 2007, 12:08:21 PM

Here it is.
The complete Autocad drawings and Mounting instructions on the F.B.D.I.S.S.M.

For those who don't have Autocad, can you save your work as a jpeg?
Paul.

Sorry, No jpegs. But maybe you can get an Autocad trial version, or even more daringly, try getting it through a torrent....

No, I have not ever thought about using a mechanical sticky point solution. 
There is simply no gain in using a very fast moving object with lots of mass in the way you describe.

Just imagine the complexity of an mechanical solution pumping a magnet forwards and backwards in full speed at 6000Hz.
It is totaly impossible to make this type of design and keeping it simple. Every direction shift would consume heavy amounts of energy,
And it would be very very inefficient compared to a electro magnet of Supermalloy.

The solenoid your'e talking about have to be many times more efficient than the Supermalloy electro magnet
to make up for the loss of moving a heavy mass counter magnet at 6000Hz. It's impossible. 
And you would have to move the counter magnet more than a couple of millimeters. It's more like 2-3cm away to make any difference.

There's another thing to. You cannot change polarity using a moving counter magnet. End of story. Mechanical solution is dead. 

I didn't realise that you designed the motor to turn so fast. You are right. Mechanical solution is impossible. By the way 6000Hz/2=3000hz if you have 2 segments or 6000/3=2000hz if you have 3 segments. Best case 2000hzX60=120000rpm. Can you build a motor that turns 120000rpm? It must be amazing.

3000rpm should be a quite suitable speed. I suppose the electro magnet must be trigged with a connector that is turned on/off in respect of rpms. Fixed 20ms, or what your goal was to have the electromagnet turned on, is one complete revolution of the rotor at 3000rpm, so you have to make a mechanism that turns the electromagnet on for a much shorter time as the rpm increase. In the other hand, the inductance of the electromagnet will delay the current flow through the coil, when voltage is applied. Depending on the load this magnet is going to have, and the time it is turned on, the phase delay between current and voltage can be determind. If the load is too low, the delay will end up with a electromagnet that does not have time to achieve enough magnetic field to push the rotormagnet out of the sticky spot.

Just a tip on the way

Br.

Vidar

Free AutoCad viewer software

For those who

Sorry, wrong of me. I was to fast and sloppy when calculating.
The motor has 6 poles and I excpect the motor to free spinn at least 2000-3000 RPM
If I hit 3000 RPM then this is 50 revolutions per second. 50 x 6 rotor heads = 300Hz
300Hz is still to high for any mechanical solution to be effective. Don't forget you'll have to move the magnets at least 2cm.
The solenoids would also cause a lot of noise while operating the magnets. A terrible thing to listen to.
Any mass movement unless being circular is a total waste of energy.
The highly advanced Supermalloy electro magnet solution is beyond question the best and most efficient way to go.
You must also consider that I must be able to design and build the motor myself.
The mechanical design you suggest is impossible to build in an simple and reliable, yet robust way.
The timing would be the most tricky part, and sensitive to any external influence, like vibrations and shock.

Yes, mechanical way has problems, but electromagnets have too. You know your design better than any other. If mechanical is out of question I don't have a problem with that. I only just tried to help. I still believe that the magnetic ramp can have small distance difference first-last magnet. But as you said, you want to make the motor yourself, so you may not have the tools to do mechanical work with accuracy of 0,5mm and higher.

Just remember, there is a huge difference in strength when the magnets are 1mm away than being 1cm. You may have the same power at 1/10th of the speed, so mechanical might not be a problem at that speed. (In case you get stuck with electromagnets, and cannot continue using them.)

Kostas

I'm just wondering about how you are going to distribute the magnetic flux along each stator with that kind of shape.

It is evenly distributed by the stator magnets being equally strong of the same size and polarity.

I wonder about this as you sure know that a smaller magnet which is approaching a long magnet are forced into the middle of the long magnet,
and not necessarily forced to the closest end of it.

This does not apply to a situation where the rotor magnet is traveling along a gradient slope. You must not see it as linear magnets approaching each other.
In this setup the highest flux is found at the narrow end of the spiral where the magnets can meet together at the closest distance, thus seeking the most flux.

What I mean is that the rotor magnet in your design in fact will deaccelerate before it reaches the closest end of the stator magnet,
because the greatest magnetic attraction is not at the closest end but some distance before it - however, not in the middle as the
stator magnet is not in "parallell" with the rotation.

It will not deaccelerate at all. Haven't you seen the video I mentioned earlier in this thread?
http://www.overunity.com/index.php/topic,3456.msg56873.html#msg56873
http://freenrg.info/Sprain/Paul_Harry_Sprain_magnet_motor.avi
His magnets doesn't stop a bit past halfway as you seem to believe, simple due to the gradient wall of stator magnets.
It will however stop at the very end of the stator magnets, but the electro magnets will act as an extra stator magnet and this will trick the rotor into a new loop.
The gained momentum of the movement and the other rotor magnets pushing will help push the end rotor magnet into the electro magnet area while also getting attracted & then repelled.
I have explained this several times. And there is the video to. It's working fine for him, why not me? What is so difficult to get?

Hence, I think you have to add more energy to the electromagnet than calculated to force the statormagnet to pass that most attraction point to the stator magnets.
Then you probably already have used that excess energy you, or Paul Sprain for that matter, are hoping for. Any thoughts about this problem - if it is a problem?

I don't know the amount of energy I have to add to overcome the sticky spot, but it is minimised by the Supermalloy.
And I have no clue of there will be any OU with this type of motor. I just have the earlier report from Sprain to rely on.
His claims is 200W in and 11544W out. But I do understand how the motor works and how the OU is supposed of being achieved.

Simply put:
The electro magnets have to be timed to feed the least possible power to the motor to keep the natural high torque spinning continue.
Forget all bedtime stories about recapturing the induced back EMF to achieve OU or other theories.
Recycling the BEMF will give a higher COP but its not crusial to achive OU according to the reports from Sprain himself.
Don't forget that if you recapture all of the BEMF you will get back pull on the rotor magnets. In real life you can perhaps recycle 10% at most.
It's the natural high torque at the highest usable RPM that is responsible for the OU claims. Not the BEMF.

I hope this clear things up for all of you interested guys. 

Sorry for not being humble today! 
Thank you / Honk

Sorry, you are wrong about the huge difference in force between 1mm and 1cm. The distance you mention applies to small thin magnets.
You can see for yourself the difference in force between 1mm and 1cm on the magnet size I intend to use. At 1mm there is a massive force of 189,6kg to move.
At 1cm distance there's still 85kg force left to be moved by the solenoid. Not an easy task.
At 2cm there is still 1/4 of the force left to be moved, and that is a very heavy work to perform at 300hz speed on a rotor magnet
weighing 650grams, and each rotor magnet does weigh this much. The moving stator magnets would need to be of the same size.

Understood, good luck with your design.