Self-Runner NS Coil Pulse Motor Live Video Stream. It's been going for months!

[IotaYodi]

I think ferrite should be tried. Being so fragile you would have to be careful with the windings. I suppose you could use an iron core with multiple ferrite toroids over it. Dont know how that would affect it. Or an iron tube with a ferrite core inserted. From some reading today on power transformers using ferrite,it takes a larger wire on ferrite to do the same as an electrical steel core. May not matter with the Ns coil scheme.

Thanks for your service in Nam

Thank you Bill!

[Pirate88179]

Iota:

What I was considering using since I have not seen many sources for good, low cost ferrite rods was a wood dowel with the easy to get toroids slid onto it.  Might need to spot weld it with a hot glue gun in a few places but I think it would be important to allow as much contact of the toroids to each other as possible.  With the wood as the "core", I would not expect any possible bad side effects as if we used any other type of metal.

Bill

[IotaYodi]

Novel idea Bill. You would need to glue or fasten them down to the rod also so they rotate in unison for the windings. Sounds doable.

[Pirate88179]

Novel idea Bill. You would need to glue or fasten them down to the rod also so they rotate in unison for the windings. Sounds doable.

Thanks.  Well, since the toroids all have their edges broken at 45 degrees when you put them together you get a 90 degree groove that one could easily spot-weld (hot glue) several places around the circumference and those glue spots would be sub-surface to the outside diameter of the toroids.  This way, as you said, they would all rotate together on the wood dowel and there were be no glue on the faces of the toroids so hopefully we get it to think it is one long tube.

I did this with my large toroids on my Lidmotor's Jeanna light replication.  This is how I stacked 2 of those large toroids together to make one very thick toroid.

Bill

[Mk1]

@mk1
Make sure you dont magnetize your compass needle also.

Good one , it must be a joke ...

Mark