OK I just got N50 power magnets in 1/2 inch ring, 1/2 inch OD, 1/8 th ID and 1/8th thickness.

These are 50 power, and comparing them to regular old school black iron ceramic - ferrite magnets ... they are over 10 X the power. Ferrites are ~N4.5.

Now the question I have is pertaining to magnetic lines of force emanating form the magnets. Not quite lifting power etc.

In my application I can fit 4 magnets like a pole if they are 1/2 inch dia, or 1 1 inch magnet if its 1 inch dia,

Which of these 2 (or any others you suggest) will have more magnetic lines of force out of each pole.

Now I also can get it deeper if needed, and will that increase the number of lines.

Cool.
Buddha.

Quote from: The Buddha on December 31, 2009, 06:07:34 PM
OK I just got N50 power magnets in 1/2 inch ring, 1/2 inch OD, 1/8 th ID and 1/8th thickness.

These are 50 power, and comparing them to regular old school black iron ceramic - ferrite magnets ... they are over 10 X the power. Ferrites are ~N4.5.

Now the question I have is pertaining to magnetic lines of force emanating form the magnets. Not quite lifting power etc.

In my application I can fit 4 magnets like a pole if they are 1/2 inch dia, or 1 1 inch magnet if its 1 inch dia,

Which of these 2 (or any others you suggest) will have more magnetic lines of force out of each pole.

Now I also can get it deeper if needed, and will that increase the number of lines.

Cool.
Buddha.

ur weird

If you took this long to get to that conclusion, you're slow ...
Cool.
Buddha.

Quote from: The Buddha on December 31, 2009, 08:28:07 PM
If you took this long to get to that conclusion, you're slow ...
Cool.
Buddha.

i'm faster when i fall down, yes


i know a few electric engineer dudes, if you post what you're trying to accomplish, i'll forward it to them... i just don't get it from your original post

I had a 8 pole soft iron elentromagnet that was energised by 350 turns of 22 guage wire carrying 2.5-3 amp current.

I am trying to replace it with a similar sized aluminum bobbin with these 1/2 inch OD X 1/8th ID X 1/8th depth magnets which I will screw into the outside of that bobbin 3-4 like poles in a clump and have 4 north and 4 south clumps.

The magnets have surface gauss of 14,500.

This is the rotor -
http://www.regulatorrectifier.com/catalog/images/CB_ROTOR.jpg

My contraption will be aluminum of that same size, but have 24 or 32 of these -

http://www.kjmagnetics.com/proddetail.asp?prod=R822%2DN50&cat=168

Will it do it ?
Cool.
Buddha.

ok, i'll bug 'sparky' wehn i get to work monday.

god i hate mondays.

Get pics of the rotor and the specs on the magnet. I can at best get N50 in the ring style. The solid ones are available in N52 max.
For a practical world reference 1 will suck a steel clip 1 inch away. This is that regular small clip black clip, chrome handles. The smallest one. Standard staples issue.
3-4 of them stacked and they are over 2+ inches for the clip.

I am leaving myself the option of getting some washers under them and putting it closer to the coil if needed ... though I get too close and some sheite is gonna clobber each other.

Cool.
Buddha.

Are you looking for a stronger magnetic field?  You're gonna be spinning something in the magnetic field right? so you want a stronger/more intense magnetic field.  The more magnetic lines of force statement isn't making sense to me.  The smaller diameter should give a more intense (prob not the technical term...) field, but I sucked at electomagnitism a long time ago... Best bet is probably whatever gives you the most mass, the closest to your wires.

This is going to be spinning. I need a stronger field, I could put 20 or 30 in each spot, but the problem is that the bolt that has to go through the center, we cant do that any smaller than 1/8th obviously ... so I can do the tiniest things there are ...
I am getting 1/2 inch OD 1/8th thick and 1/8th hole. If I need stronger ... then do I dill deeper and stack 2 in each hole or punch a wider hole and put a 1 inch X 1/4 ... lets first see if I am in the ball park wiht these 3 in place of each pole, then I'd know.
Cool.
Buddha.