Pickup building helps

[ubaid88]

I build a pickup copying gibson p-94. It is not working. I cannot hear any thing

From here: http://www.pisotones.com/Articulos/P...a/Pastilla.htm

But i don't have steel casing surronding the pcikup. Is it necessary have steel casing?





You should assume that i am connecting this pickup directly to the output jack.
Should i use mono or stereo output jack.
Please suggest improvements

[madialex]

Uhmm, first thing I think I see is the magnet is cracked in half, at least the one showing anyway. The next thing is I see no hook up leads coming from it, is this a new wireless pickup, next thing I cant see are the windings, what gauge wire, how are they wound.......

You didn't give us much to go on.....

[SkinnyWire]

How are those magnets polarized? Do you have like poles facing in (i.e S><S or N><N at the pole pieces)?

[Peter Naglitsch]

No, you do not need a steel casing. But as said earlier there is a slight lack of information here.

On the other hand those magnets are not cracked. They are two identical magnets put in a row (four altogether). When you put two magnets togeter they form the same (mor or less) magnetic field as one solid magnet. But you must put them together in that way so that they are actually reppeling each other. Or to put it simpler: Put all four of them with the same polarity against the screws.

Next thing to do (or first) is to check the coil for ohmage. Most likely you have a short somewere in the coil.

But I must add one thing: If you do not know if you should use a mono or stereo jack, it might be a tad to early to move on to winding pickups. A bit of reading up before might not hurt.

[madialex]

This is all a joke right? I really hope it is.

[Zhangliqun]

It is a bit bizarre.

Has it been tried IN a guitar by any chance?

[ubaid88]

This is my first pickup from scratch.

5000 turns.
But it is bit lose.Winding with 43" wire.

But the problem is that i recieve no signal.
I currently don't have electric guitar(my cousin took it for few days.)
I am experiment on acoutic guitar with steel strings. Does it matter.
I read somewhere that you need to use dummy coil for gibson type pickup. Do I really need that. And My bobbin is bigger in size that usual(because of lack of proper tools).

[ubaid88]

Also i used four magnets

[Peter Naglitsch]

This is all a joke right? I really hope it is.

Don't really know what you think is a joke. Is it my answer about using two magnets together in stead of one single or the complete thread? If it is the later, I must to some extend agree that it is a bit odd. A totally noob without any doubt. But if it is the first… I don’t really know what to say. I use a similar magnetic configuration for my T90 and S90 pickups as I am unable to find strong enough magnets with the right size to fit that particular configuration. I started using it after a recommendation from my magnet supplier. He showed me how the magnetic field looks like when you “extend” a magnet by mounting two of them together, like in the picture. It is very close to the field of one single magnet. But of cause you need to mount them in a straight line and without gaps.

[madialex]

No Peter, not anything you said. I thought it was maybe someone like Sam Lee guy pulling our leg. I mean I see no lead wires, how is it to be hooked up?

Please explain to us all, where the leads are, what you are trying to hook it up to, to get sound out, an amp cord?? Please give us more info......

[Peter Naglitsch]

OK, I overreacted a bit…sorry

Still I think you (Ubaid88) need to check the coil for continuity. I think that you have a short out here. Also testing it on a steel string acoustic isn’t the best thing to do. And also everything madialex says. What are you testing this thing with?

[ubaid88]

In my experience a upside down mount over the strings is the best way to QC a pickup build

A guys advised me.
Thank you all.
I am a newbie. I am not quite familiar with technical terms. Can you suggest any guide or link for basic info and instructions

[Joe Gwinn]

I build a pickup copying gibson p-94. It is not working. I cannot hear any thing. ....
Please suggest improvements

A well-focused picture or two of each of all sides of the pickup would be a start.

[ubaid88]

i found the problem. i create woodcore used bobbin bit thicker that usual so now iam creating new one hope this solve the problem

[David King]

No signal is strange unless there is a break in the winding somewhere which is very possible with 43 AWG. A steel string acoustic should work to get you a signal but just tapping on the top of the pickup with a nail will tell you if it's working and connected correctly.
I'd recommend Wikipedia's page or two on guitar pickups, it's concise and will give you all the technical terms as links to other pages so you can keep reading until it all makes sense. I haven't checked out the Spanish or Portuguese language wiki pages on pickups but I imagine they exist to some extent.