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Screwing on a ring magnet?


By hobot, Section Homebrewed Electricity
Posted on Sun Sep 11, 2005 at 06:12:00 AM MST
Mounting magnets and issue?

What would happen in regards to useful coil EMF if a ring mangent
were mounted to disc rotor via a bolt in its center?
Would make stacking em up easier I assume if needed or desired.

I assume ring shaped neo's come with  N/S poles on flat faces, yes/no?

I also assume one could water jet a hole in solid neo's but don't know
what effect on the flux this may have or if it even matters.

I assume that steel bolts or ferric supports at edges of magnets would
divert flux from projecting toward coils, but alas, duh I don't know.

hobot
Arkanaas

Screwing on a ring magnet? | 4 comments (4 topical)

Re: Screwing on a ring magnet? (3.00 / 0) (#1)
by drdongle on Sun Sep 11, 2005 at 06:48:07 AM MST

This method should work as long as you use a non magnetic screw, Brass, Nylon, etc.
Carpe Vigor, Dr.D


Re: Screwing on a ring magnet? (3.00 / 0) (#2)
by hobot on Sun Sep 11, 2005 at 08:38:53 PM MST

OK that's not the answer I was expecting as I was thinking about
using steel fasteners but your response makes sense. Its a non
issue if using non magnetic fastener material. Good point, thanks.

hobot



Re: Screwing on a ring magnet? (3.00 / 0) (#3)
by drdongle on Mon Sep 12, 2005 at 05:50:25 AM MST

To more directly answer your question, yes steel hardware would "short out" the magnetic flux.
Carpe Vigor, Dr.D
[ Parent ]


Re: Screwing on a ring magnet? (3.00 / 0) (#4)
by hobot on Mon Dec 19, 2005 at 07:17:25 PM MST

You might find more looking into Hallback arrays
that use alernating magnets w some arranged poles set 90' to flux.
http://www.fieldlines.com/story/2003/12/29/145227/65


Screwing on a ring magnet? | 4 comments (4 topical)
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