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FDP Forum / The 'Pup' Tent / Can a pickup be (somewhat) unwound?

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 15th, 2015 12:44 AM   Edit   Profile   Print Topic   Search Topic

I mean, can you take say 100 or 300 or whatever # of windings off a pickup (Tele, in the immediate case) and solder it back into working order? I don't see why that would be so difficult, although maybe there is some danger getting the cover off in a gentle fashion. Eh?

Peegoo
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Chain Smokin'

Gas Station Attendant
Nov 15th, 2015 06:44 AM   Edit   Profile   Print Topic   Search Topic

Certainly. I de-wind my P90s as supplied on Gibson guitars.

Getting the covrr off the Tele neck pickup is easy. The difficulty comes in being very gentle with the coil wire because it is extremely delicate. This becomes a bit more difficult when the coil has been wax potted, so warm it up with a hair dryer to soften the wax before you start unwinding it.

Look at a few YT vids about making pickups so you can see what's involved.

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 15th, 2015 02:12 PM   Edit   Profile   Print Topic   Search Topic

Thanks, Professor Goo.

Perhaps we should start a business: Goobson Musical Products.

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 15th, 2015 02:25 PM   Edit   Profile   Print Topic   Search Topic

""Getting the covrr off the Tele neck pickup is easy. The difficulty comes in being very gentle with the coil wire because it is extremely delicate. This becomes a bit more difficult when the coil has been wax potted, so warm it up with a hair dryer to soften the wax before you start unwinding it.""

1) So, gently removing the cover should not cause breaks in windings?

2) If you soften/melt the wax, is it required to add some was back after you're finished? I have an ounce of (rather nicely fragrant) beeswax hanging around.

Peegoo
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Chain Smokin'

Gas Station Attendant
Nov 15th, 2015 02:45 PM   Edit   Profile   Print Topic   Search Topic

Yeah, it's pretty safe to remove the cover. Bend the tabs back all the way first, so you don't have to force anything, and warm the cover up a little to allow it to release from the bobbin. It should slide off with little to no resistance.

You can warm the metal cover with a soldering stick. Use a little piece of aluminum foil over the tip of the stick so no solder gets on the cover. No need to get it hot...just warm so the wax potting releases and lets the cover come off.

Best way to pot the pickup is to fully immerse it in molten wax, until the existing wax on the bobbin turns clear. You cam also do this with the cover on. Pure paraffin wax is too hard. Beeswax, surfboard wax, and (yes) wax from a toilet ring works great.

Use a new toilet ring, or you'll sound like crap ;0)

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 15th, 2015 03:28 PM   Edit   Profile   Print Topic   Search Topic

Make sure you come back, folks, he'll be here all week.

;>

Steve Dallman
Contributing Member
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Merrill, Wisconsin

Age is just a number...mine is big
Nov 16th, 2015 01:39 PM   Edit   Profile   Print Topic   Search Topic

My 65 P bass did not reject neon light buzz. I replaced the pickup with a Dimarzio P pickup when they first came out. The D & G coil never matched the E & A coil.

Years later, I pulled the pickup out of my junk box and measured it. (I had learned a lot.) Sure enough, the E&A coil had far more windings. I removed wire from the coil until it matched the other coil. Noiseless and balanced. I used it on a Ripper bass mod, where I added it between the Ripper pickups.

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 16th, 2015 02:14 PM   Edit   Profile   Print Topic   Search Topic

A lesson learned. Thanks.

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 17th, 2015 10:00 PM   Edit   Profile   Print Topic   Search Topic

So, if the neck pickup below is wound to 7.6 K, how many winds do I need to remove to get it to 7.2k?

Thanks

The Long And Unwinding Road

Peegoo
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Chain Smokin'

Gas Station Attendant
Nov 18th, 2015 03:05 PM   Edit   Profile   Print Topic   Search Topic

Unwind about 75-100 wraps and measure that. Proceed the same way (unwrap, measure) until you get into the ballpark.

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 18th, 2015 03:07 PM   Edit   Profile   Print Topic   Search Topic

I'm afraid to get into the ballpark in case somebody bombs it.

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 18th, 2015 03:42 PM   Edit   Profile   Print Topic   Search Topic

I found on StewMac an article about wax potting.

"""For years, we’ve answered these questions with an online article about how the great pickup maker, Lindy Fralin, does it. Described in that story is Lindy’s recipe for potting wax: 80% paraffin and 20% beeswax.But the other day a customer emailed to say “Hey StewMac! Lindy doesn’t use beeswax anymore — he uses candle wax.” When I heard that, I called Lindy to get an update.
It turns out Lindy’s done some new research, with the result that he no longer uses beeswax at all. He’s switched to paraffin, the petroleum-based wax sold in the supermarket for making candles and sealing jelly jars. He likes the fact that paraffin melts at a lower temperature, so there’s less of a chance of a coil being damaged by heat.

Lindy’s other reason for ditching beeswax surprised me: he says beeswax darkens the tone of his pickups, affecting the sound in a way he doesn’t like. With paraffin, he hears a clearer tone with better highs than what he heard when using a mixture of the two. That’s interesting new information. Thanks, Lindy!""

Huh...

Lindy waxes about potting

Peegoo
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Chain Smokin'

Gas Station Attendant
Nov 19th, 2015 11:03 AM   Edit   Profile   Print Topic   Search Topic

Who is Lindy Fralin? Never heard of him =o)

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 19th, 2015 12:02 PM   Edit   Profile   Print Topic   Search Topic

He's some guy who won't mind his own beeswax.


""Look at a few YT vids about making pickups so you can see what's involved.""

I did. Potting is to avoids air bubbles???????????

Well I'll be danged........

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 19th, 2015 05:07 PM   Edit   Profile   Print Topic   Search Topic

""Unwind about 75-100 wraps and measure that. Proceed the same way (unwrap, measure) until you get into the ballpark.""


My multimetre's measurement lines, up in the thousands, are not fine enough that I will have much confidence in them. I'd be lucky to tell 7k from 8k. So give us a guess, Oh pickupologists,: how many windings would have to be removed to lower the resistance from 7.6k to 7.2k, more or less? Eh?

mr.gibson

Hamilton, Canada

Music is your only friend....
Nov 19th, 2015 10:30 PM   Edit   Profile   Print Topic   Search Topic

I'd guess at about 350-ish.

You need a better metre.

FDP Forum / The 'Pup' Tent / Can a pickup be (somewhat) unwound?




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