Monopole Magnets

[Tom C]

Welcome all,

The first thing we want to get out of the way is magnets, which to use? we only use Ferrite C8 in the monopole energiser. 3/8" by 1" by 17/8" almost every magnet supplier on the face of the planet has this exact magnet or something similar. John will be posting on the reasons for this decision at a later time.

Tom C

[BEDINSSGUKRAINE]

In my SSG i use ceramic Ferrite magnets.

[MrRonsen]

i use ferrit magnets to, the black ones... no neo,
my magnets are smaller 10mm x 10mm x 20 mm...
so torque and rpm could be lower.. but triggering sharp pulses works as well i think...

(17/8) inch = 5.3975 centimeters
(3/8) inch = 9.52500 millimeters = 1 centimeter
1 inch = 2.54 centimeters


i think we should talk in millimeters instead of inches

[John_Koorn]

i use ferrit magnets to, the black ones... no neo,
my magnets are smaller 10mm x 10mm x 20 mm...
so torque and rpm could be lower.. but triggering sharp pulses works as well i think...

(17/8) inch = 5.3975 centimeters
(3/8) inch = 9.52500 millimeters = 1 centimeter
1 inch = 2.54 centimeters


i think we should talk in millimeters instead of inches

Hi MrRonsen,

Yes, I think in mm too

Tom C means 1-7/8" or ~50mm, not 17/8". The other dimension are correct.


John K.

[bobinski]

Is 50x19x9.5 too small?

Tom, My magnets are slightly smaller at 50x19x9.5, is this OK?

[John_Koorn]

bobinski,

They will be fine.


John K.

[bobinski]

Hi John, thanks for that, I didn't really want to build a third one!

[Ren]

Hi John, thanks for that, I didn't really want to build a third one!

Lol, if there is one thing Ive learned over the years, its this.

You always want to build another one.

Regards

[James Milner]

Are these sized magnets tripple stacked or just single?

[John_Koorn]

Just single

[bobinski]

Lol, if there is one thing Ive learned over the years, its this.

You always want to build another one.

Regards

Ren,

I did mean not right now!

Regards

[James Milner]

Is 50mm x 25mm x25 mm too big? Or is this size magnet still ok

[John_Koorn]

James, a little too thick. Try and get some some half that thickness, like 10 or 12.7mm

[Dan Heal]

I have a question regarding magnets, if I don't have the correct size magnets ie- 25 x 50 x 10mm is it possible to use multiple identical magnets glued together to get the correct size? That is assuming that they are aligned properly and not just stuck together in the way they attract which would make them far less powerful...

[John_Koorn]

Dan, yes you can do this. Most ceramic magnets start off as one big magnet and then they are all chopped up into little ones. But you should be able to get the right magnets you need at Aussie Magnets. These are the ones I get 50 x 20 x 12.7mm Block (Ferrite) - Aussie Magnets

They are pretty cheap and they ship from Brisbane, so it shouldn't cost you that much.

John K.

P.S. Good to see so many Aussies on the forum