This magnet motor idea should be easy to build and test

[Low-Q]

Not sure I fully understand the cross analogy. If the end are meters apart but the two can still come together at the center, it sounds like that might be due to the distance instead of flux not being parallel.

I'm glad you are building your design. There is much to be learned about magnetism that I don't think we yet know.

What I mean, is the same system that controls the print head on a 3D printer. See attached picture.
This mechanism has two parallell rods in the X axis and the Y axis. The print head is slinding along these rods in any possible directions in the XY plane, but keeps the orientation of the print head fixed.
If I try to turn the head, nothing happens. The head does not move in any direction. However, if I had a long rod, like I first suggested, the print head would move in the direction I want to push.


This means I apply "countertorque" in the center of the magnet, and not outside it. What happens to a wheel if tou apply force in the very center at a hub? Absolutely nothing. You must apply force off center to make it spin, and that is exactly what I don't want to.


The rod is therfor causing countertorque in the magnet, just like a socket wrench cause a wheel to turn when you loosen or tighten the wheel bolts.
I must find another way to lock the orientation of that magnet. A system that does not push the magnet in the wrong direction. Torque exist in the stator magnet all the time, I just need the rotor to to "feel" the same way.
For example, if you use a socket wrench, and point the shaft towards center of the wheel, and push on the wrench shaft at the same location as the wheel hub, you can use as much force you want on the wrench without causing the wheel to turn. This method must be adapted in a way that can follow the magnet, and still not cause countertorque.
I think (hope) that the method described above and in the picture do exactly this.


Vidar

[Low-Q]

I realized that torque measurements/simulations is useless. With reference to the first image, the rotor magnet provide torque mainly because itself want to turn around its own axis. This will in turn provide torque to the whole rotor.
However, when that magnet is fixed in one orientation, this torque is gone., but there is one-way torque in the stator (if that could spin freely). So I bumped into a misinterpreting there.
So instead, I calculated forces in X and Y axis for every 7.5 degree rotation, used Cos and Sin calculations to see what torque I got left. Yes, lots of torque, but the positive torque between 330 and 30 degrees, and between 150 and 210 degrees, is zeroed out by the negative torque between 30 and 150 degrees and between 210 and 330 degrees. So the total torque ends up in zero.


So I need to wrap my head around again. However, no bad feelings. Good to learn how magnetic forces behave, and avoid those mistakes again. Plenty of ideas left that I can start working on.


Vidar

[MagnaProp]

Good info and good conclusions. Thanks for the sharing the info.

With each test, we get that much closer to our end goal so keep up the great work.

[Low-Q]

Good info and good conclusions. Thanks for the sharing the info.

With each test, we get that much closer to our end goal so keep up the great work.

Thanks! I'm working on it even if I feel that the learning curve starts to flatten out, LOL 


Vidar