Spiral magnet motor

[Magnetist]

Hi all,

I have been thinking about a magnet motor with magnets arrayed in a fibonacci spiral like fashion. Searching the web I came across a simple device proposed by Mikell here:
http://fdp.nu/mikelldevice/thedevice.asp (not the donut but the simple two-dimensional model).
Does anybody know about this model and has anybody tried and succesfully replicated it?

Andrew

[Honk]

Hi there Andrew.

The prefered name for the spiral motor is Magnetic Wankel Motor.
You should google on these words for more information.

Myself I'm being involved in a very similar project, namely a Dual Induction Split Spiral Motor.
http://www.overunity.com/index.php?topic=3456.0

Just to pervent you from making the same mistakes as others trying on the Spiral Motor I can tell you that
it won't work unless using a high tech electromagnet and heavy duty power electronics for precise control.
The sum of the forces within the spiral gradient is always less than the sticky spot. It won't run without help.

/Honk

[emitremmah]

How about a spiral as in spiral staircase configuration? Anybody done some testing with this type of configuration?
We all know that if you take a line of magnets and a separate magnet you can get motion of the one to many like the SMOT.
Now we also know that the sideways energy to move out of the magnetic field requires less than if going directly out of one of the poles.

So how about a tune with magnets in a spiral on the inside. Then a mechanism like a screw of the same angle which allows a magnet to travel the magnetic course upwards. Then at the top the weight of the magnet and screw drops back to the bottom and starts over again.

??

[Magnetist]

Thanks Honk.

Just to pervent you from making the same mistakes as others trying on the Spiral Motor I can tell you that it won't work unless using a high tech electromagnet and heavy duty power electronics for precise control.

I understand this is the case for the magnetic wankel motor, but I'm more interested in actual complete spiral configurations of the stator and/or rotor. I still think it should be possible to get such a thing running without the need for heavy duty power electronics.

The sum of the forces within the spiral gradient is always less than the sticky spot. It won't run without help.

Can you or others recommend any free (Linux) software for calculating the forces (and flux) between magnets and also for CAD (ideally combined)?

Andrew

[Honk]

How about a spiral as in spiral staircase configuration? Anybody done some testing with this type of configuration?
Then at the top the weight of the magnet and screw drops back to the bottom and starts over again.

It won't drop in a spiral motor. It will get stuck at the sticky spot.

You should all know it's not about how you arange the magnets in strange ways.
It's only about the magnetic gradient (fall angle) and making sure the sticky spot
and the entry is placed close for an easy transit by the use of an electromagnet.

It will never work without the help from electromagnetism and electronics.
But this is not cheating as long as the electromagnet is using less power than
the motor is producing by the magnetic gradient torque.
When using high quality core material in the electromagnet most of the power
can be recycled by storing the returning BEMF in capacitors.
The only major loss in a good spiral motor design is the resistive copper wire heating.
And this is fairly low compared to the magnetic gradient potential when properly designed.