Magnet motor in Argentina

[jaybird]

Potential problem?

Just trying to stay ahead of the problems...what do you think? We can find rectangle magnets that are correct, but they won't be shaped the way we need them to be.

PS: do we need to start a new thread? If we are intruding on this thread, we can start a new post...sorry for hi-jacking this?

EDIT: should say "may be too close and CAUSE the rotor to stick"

[Omnibus]

jaybird, I have 11 RadioShack magnets glued on the inside of a circle made of a magnetic tape. Looks similar to your drawing. The problem is how to make magnets concave as you've shown in the picture.

[dutchy1966]

Potential problem?

Just trying to stay ahead of the problems...what do you think? We can find rectangle magnets that are correct, but they won't be shaped the way we need them to be.

PS: do we need to start a new thread? If we are intruding on this thread, we can start a new post...sorry for hi-jacking this?

EDIT: should say "may be too close and CAUSE the rotor to stick"

I think it willbe quite hard to arced magnets that will exactly fit our needs, unless we base our design on those arcs (which i wouldn't prefer...) What we could do i suppose is use quite a few of little ones standing up something like IIIIIIIIII. All those small ones can be placed in a fairly good circle shape i presume.
Do you want to start a new thread on this board or maybe on yahoo groups ?

Btw, I've got Sketchup 3d here too. Looks like a good tool to draw the designs in.
Jay, have you got any idea about the dimensions of those stator segment. I looked at some U frames that are 25*25*25 mm (2 mm thick alu). That would need a circle of 12.7 cm diameter. It looks like we might be able to fit a hdd platter inside that circle too.... Is that along the way you were thinking?

[Liberty]

I only see one issue.  If there are magnets on the rotor facing the stator magnets N to N; as you said, the magnet will quickly move to the gap and lock up between stator magnets.  Even if one magnet is out of the way, the other two magnets will move only to the gap between the other stator magnets and lock up the motor.  I believe that the magnets on the rotor that you refer to were mounted above the stator magnets on the rotor and were used to push the magnets down to the resting position, not for propulsion.  I do not believe that it is possible to use them in the rotor for the above reason.  However, if you use the stator magnets to provide the repulsive magnetic field in a steel rotor, I believe that the motor will work, or if a magnet is on the rotor, it should be attached to the steel rotor plate.
Just my opinion, but a simple test can show you this.  Use 3 magnets of the same pole.  Space two of them about 2 or 3 inches apart (stationary magnets) and hold the 3rd magnet in hand in between the two stationary magnets.  Either way you go, you will hit the magnetic repel field of the stationary magnets.  It will want to rest in between the two magnets.  This enough to lock up the motor or at least cause it to perform poorly or not at all.

[Feb2006]

Hey guys, I think we may be putting the wagon in front of the horses...

We may need to find the MAGNETS (size and shape) we need first, THEN design the sizes accordingly. I am looking now.


Also, we may want to design the first out of soft wood, even balsa...so that it can be worked easily, and parts can even be cut without expensive tools (even hand tools)...when we get a design that works (or close) we can progress to a metal design.
Jay

Yes find magnets first, i agree.
Balsa wood and strong magnets ? I think  you need harder wood.
Maybe make a mould and cast it in epoxy or something.