Multiple Magnet Pickups

[Peter Naglitsch]

I've managed to get 8000 turns of 42 onto a GJ bobbin. 15.2K! Don't think I stretched the wire much. I take great care to avoid that.

[Spence]

I like how theres dual topics going on here...

So basically I can use an Alnico II but I'll need a shim. Like I said, im very new, so how would I go about getting the right size shim?

Sounds like this is a little more complicated than I first thought, I might just give up on it and accept the pick up for what it is.

Don't give up. You can try using lollipop sticks for size. You can always sand them down a bit.

[kevinT]

I've managed to get 8000 turns of 42 onto a GJ bobbin. 15.2K! Don't think I stretched the wire much. I take great care to avoid that.

8000 turns of 42 on one bobbin ....I don't mean to be a skeptic. Do you have a CNC winder and a tensioner?

This would be hard to do hand guiding.

[shef86]

Will sanding the magnet cause any demagnification?

[David Schwab]

Will sanding the magnet cause any demagnification?

Not unless you get it hot enough to reach the currie point. Then it will lose it's charge.

[shef86]

Alright, so I've decided to order some A8s and A2s from this website:

http://www.shop.wymoreguitars.com/ca...?categoryId=29

One more question though:

will stacking the A8 and A2 demagnitize the A2 because it is much weaker? Is there an issue of demagnification of any of the magnets (except the ceramic) that I should be worrying about?

[David King]

There's a good possibility of the A2 getting demagnetized if you aren't careful. Don't let them touch until you're to assemble everything.

[shef86]

Yeah, I'm curious how they'll be shipped to prevent them from interacting.

When I put them in the pick up together, wouldn't the A2 become demagnitized? Also, how do I know the right orientation of the magnets?

I may just stick with A8s since it seems like it's hard to demagnitize these...

[SK66]

I make humbuckers with mixed magnet arrangements(alnico/ceramic)...
I'm not sure how you intend to get 2 "standard" bar magnets under there without them touching. You could only stack them. You'll have to stack them with like poles together (they won't like that) and the ceramic will eventually soften the alnico in that kind of arrangement.
You could cut the bars and place them side by side as a single "larger" magnet, but that's likely pointless....cutting ceramic is damn near impossible.

[kevinT]

I make humbuckers with mixed magnet arrangements(alnico/ceramic)...
I'm not sure how you intend to get 2 "standard" bar magnets under there without them touching. You could only stack them. You'll have to stack them with like poles together (they won't like that) and the ceramic will eventually soften the alnico in that kind of arrangement.
You could cut the bars and place them side by side as a single "larger" magnet, but that's likely pointless....cutting ceramic is damn near impossible.

Do you sell the smaller flanking mags in Alnico or Ceramic for multi-mag buckers?

Does anyone know if Allstar or Magnetic Hold sells them....I thought that i would ask here before I ask them. What about the taller ceramic mags that GJ sells. Does anyone know whether AM or MH sells them.

[SK66]

Do you sell the smaller flanking mags in Alnico or Ceramic for multi-mag buckers?

Does anyone know if Allstar or Magnetic Hold sells them....I thought that i would ask here before I ask them. What about the taller ceramic mags that GJ sells. Does anyone know whether AM or MH sells them.

I have 1/4x1/4 bars I sell upon special request.

[shef86]

I need to open up my 500t and see how they're "stacking" the three ceramic mags, and if it just adds up to be a standard size magnet, I'll probably just stick and A8 in there and see how it sounds.

As for placing them in there, I intended on stacking them, and doing some sanding if needed. But then I read a thread on here about A8s demagnifying A2s if you place them together in that configuration...and alnicos getting unmagnified in general around stronger magnets.

...So yeah, I'm just confused about that, I'll be opening up my 500t today and taking a look...

[SK66]

Any very strong magnet will degauss a weaker alnico when placed like poles together. BTW, A8 is basically the same as ceramic (C8) as far as strength which is why C8 is usually used (cheaper). Now, magnet size and arrangement also makes a difference, so just a swap to a smaller grade 8 magnet may make a difference.

[David Schwab]

I need to open up my 500t and see how they're "stacking" the three ceramic mags

It's usually the center magnet, as in a regular 1 magnet humbucker, and then two smaller flanking magnets on the outsides of the poles.

[John_H]

It's usually the center magnet, as in a regular 1 magnet humbucker, and then two smaller flanking magnets on the outsides of the poles.

I rewound an older probably 80's Schaller that was configured like that. It didn't impress me, but the owner liked it. The magnets were thinner than most ceramics.