Toroidal Motor

[Low-Q]

I have searched the brain for the wonderful material magnetic resin. A "liquid" magnetic material made of resin and magnetic powder. This can be used on regular toroid transformers or toroid coils by coating the part of the windings you whish to eliminate from magnetic fields, rather than wind a numberless turns via beads or snap-on ferrites. After a while the resin together with a magnetic accelerator will harden almost into ferrite. What do you think?

Vidar

[broli]

I think that whatever is simplest to work with is best  . If the resin and snap on pieces give the same result I'd rather go with the snap on then for ease of use. The resin is for permanent application which we are very far from at this current time.

[broli]

Low-q I illustrated an experiment that you should definitely try with those magnet pieces you have. I'm starting to believe that the reaction force on the magnets is weaker than the action force on the wires. This means there is a net unidirectional force. You should perform this experiment on some kitchen scale. Use some scotch tape to stick the windings to the magnets. Also inverse the setup to look for weight gain. Try to squeeze as much windings as you can against the magnet. Maybe you will see lift off  .

Edit: Hmm why make it hard if it can be easy. You could just forget about the shielding and make it circular. This is pretty much how a speaker coil works Or what you expect to happen if the coil was a permanent magnet. This should easily show or prove whether newton's third law is obeyed nicely or not. If the rod is able to drag the magnet with it on a homopolar setup like there are 1000's on youtube then why can't these wire drag the magnet with them as well  .

Edit2: I did an experiment with the last setup. I used an analog kitchen scale which is accurate to +-20g. There is no visual scale deflection if a coil is used with about 30 windings and 1.7 A. Either the third law holds or the difference between the action and reaction force cannot be measured with this kind of accuracy. A +-0.1g digital scale should give more conclusive results.

[Charlie_V]

Broli, those are nice cad drawings, what program are you using?

[broli]

Broli, those are nice cad drawings, what program are you using?

I used lightwave 3D for those. I was a 3d designer in a distant past.