Magnet motor in Argentina

[hartiberlin]

Here is a simulation picture that shows,
that you can also use one bar magnet as the rotor
to have enough torque to use this as the rotor !
But the best position would be straight 90 deegrees to the stator opening
and not 45 degrees as are shown here in the picture.

So instead using a disc magnet you can also use
for a simpler prototype just a bar magnet which is
prolarized through its diameter !

Regards, Stefan.

[Light]

"Excuse me, but you are mistaken Light. The animation shows Torbay's exact principle of operation".
- Maybe I do, but as it shown it will not work. You will see it on your model soon (I'm wondering where can you find this fancy magnet for Rotor, centerpiece) - one side of Rotor will lift up one side of stator's magnets, while another one will keep the Rotor attracted. Something else has to be there...

[orionjf]

I?d just tested a initial (no functional yet) model and there are some important issues. I built a basic model in order to test torque and ?functional concepts given by simulations. I used a NdFeB magnet (cubic shape) as rotor and ferrites as stator magnets. The reason: to use an "asymetrical" configuration therefore force (torque) between rotor-stator will be "large" but force to push down stator would be "small". Then:
1.- A strong demagnetization proccess is observed. Some stator magnets even changes the poles after a repulsion status for a few seconds. Then, this confirm advices from tao and treb79 about ferrites or fe based magnets. Degaussing is not observed with all NdFeB magnets (yet)
2.- The core functionality works according to expected results (more or less). The strong torque is done when rotor is just in front of last magnet before gap, according to sim. ?and the best time for pushing down the stator (less force) is when rotor has passed the center of his down position (a little bit delay), then I guest could be a "net" torque in a very short space of time. Syncronims will be very important. (All tested "by hands" step by step and locking the rotor)
3.- "Attracting mode" requires springs for lifting the "passed" stators. I think is better repulsion mode if degaussing proccess is not important. Has Anybody got data about degaussing proccess for NdFeB magnets that are stressed in a permanent repulsion mode? Maybe, if the device finally works, the net energy extracted could has any kind of proportion with the energy of the degaussing cycle!!!
All parts are PVC except the rotor axis and its support but the main areas of these metal parts are not orthogonal to the fields. I still advice about metal areas with an "orthogonal view" of fields.
This is not a working device yet. It?s only for measuring forces and behaviour observations. Next steps: all NdFeB magnets, bar for rotor and complete the cap ...
I hope it will help ...
Regards
PD. I will post pictures in a few minutes.

[hartiberlin]

Here is a simulation picture that still shows
1.4 Newtonmeter torque with this design
just using a neodym bar magnet as the stator,
so this should be the easiest design so far.

Regards, Stefan.

[orionjf]

Here, my test model pictures. I think it is a simple, and useful for testing purposes (rotor shape, magnets, caps, etc). It?s easy to build in a few hours.
Stators are PVC cylinders with ferrites (don?t use ferrites because degaussing is guarantee!!!!!!).
The rotor has a NdFeB magnet. I?m sorry if any picture is not very well focused. I think it is more important to know results as soon as possible.
Regards