very simple magnet motor

[MrMag]

Sounds like a very good idea. The only thing that I wonder is will the metal pieces get magnetized over time?

[gyulasun]

Sounds like a very good idea. The only thing that I wonder is will the metal pieces get magnetized over time?

Hi,

There are ferromagnetic materials that do not readily get permanently magnetized. These are mainly certain alloys of iron with Si and other materials. Such are conventional mains transformer laminates for instance, they could be used here for tinkering by cutting them to different lengths and bundle them together (and with
careful work they can be shaped into curved/bended form too.

Of course there are other metal alloys like the cores used for electromagnets where the permanent magnetism is also unwelcome over time. But these cores are much harder to work with here for getting the curved / diminishing thickness shapes.

Gyula

[gaby de wilde]

Interesting idea to use small layers and stick them together to increase attraction.

I thought closing the loop on a horseshoe magnet also gives extra attraction. (not sure)

[iadcw]

MrMag

In my model the shaft and magnet holder are aluminum so no magnetism. The 1/2 round plates have not become magnetised so that its very noticable.

Also,it doesnt matter if the formed metal plates were magnetized. If you could make magnets shaped as needed, the plates would be magnetic and my thinking is it would work better.

Something I havent done yet is use a shield on the magnet. Since I am working with a magnet to attract metal, I dont have the problem of the shield attracting to the magnet you are trying to shield the magnetic field from. ( did that make sense).

[iadcw]

Another thing to keep in mind.

I am working with magnet force reacting to metal. Far different than working with magnet against magnet.

the variables are, size of the magnet, angle of the ramp and and distance from the magnet. These are the important things. The idea is to use the pull of magnet to metal to finesse past the gap from thin to thick. I've done this(jumped the gap) wih a very small model. It actually seemed to speed up a little when it jumped the gap and started following the second ramp. My problem was both metal ramps were not the same and setting an equal distance on both sides was not possible since both ramps were different.

you would have to be lucky to do a CNC design and get it right the first time.

I have come up with a design were variables (as I see them) are adjustable. Im making parts now and will post the results.

I do have a question - Has anyone seen a design like this.