MylowHJ Replication - Discussion

[corona]

Except, of course, that the motor magnets are made from a ferrite material of extremely high resistance to being demagnetized (or remagnetized.) That alnico remagnetizer would not be able to do much to a motor arc magnet.
Consider for a moment the engineering requirements for a DC motor arc magnet. Subject to strong rapidly changing fields from the armature coils. Subject to high temperatures. And so forth.

You've got me there, that's a very good point that I hadn't considered, shame on me. So this leaves us with an unknown condition of the stator magnet fields - were they measured after trying to remagnetize them? Did mylow know if their fields were aligned to the new direction he desired, or did he just assume? I guess we don't really have any way to know for sure....just like all too many other variables here. If only it was easier....but then I guess my first replication would have just worked if it was that easy.

Andrew

[0c]

Except, of course, that the motor magnets are made from a ferrite material of extremely high resistance to being demagnetized (or remagnetized.) That alnico remagnetizer would not be able to do much to a motor arc magnet.
Consider for a moment the engineering requirements for a DC motor arc magnet. Subject to strong rapidly changing fields from the armature coils. Subject to high temperatures. And so forth.

There are some Alnicos that are less sensitive to demagnetization, check the specs for "Alnico 8". Some can approach the demagnetization resistance of ferrite. As far as heat is concerned, Almost all Alnicos are more resistant than ferrite.

[corona]

but yeah, the point tk was making was that any magnet used in a dc motor would have to be made from a material grade very resistant to degnetization, else it would be no use as a dc motor magnet.

[cameron sydenham]

nothing is more dangerous!!!!!

[wattsup]

Well I got my two disks yesterday, one 1/4" by 18" and one 1/2" by 18". My friend with the water cutter is not charging me for the cut, only the metal.

The second one will go to a metal shop to have a groove made on the edge so i can mount rotors on a sliding method instead of gluing them. I am still waiting for my ceramic bearings that have a 0.625" bore and have two of them put into the center cylinder base.

I also have the smaller disks that go under the large disk and also that make up the lower base.

Now I have to make a final decision on magnets and away I go for some more testing and trials.

This will be a very very close to Mylow replication as far as the wheel/base goes. Regarding the magnets, I am now very convinced that once the wheel is made with the lower an extended base as the rotation point, the rotors/stator will not really matter. Mylow already showed that his same wheel can work in various ways. So the main key to this is not the magnets but the wheel form as I had mentioned on a previous post.

Seems based on this that guys that are making magnet-to-magnet wheels using a solid shaft or axle type confiuration will never work because this will not afford the same play. But I'll get into that further when I have my wheel running. lol