Anyone have any spec's (DCR) they would be willing to share for '56 Silvertone? Have a neck to rewind for one next week.
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Here's some Rewind Data for Jazz bass pickups.
Both pre CBS, and Post CBS.
My personal preference is to go low on the neck and high on the bridge.
This is stock type data.
T
**Edited the pre-cbs neck and bridge.
It took a while, the site kept crashing.Last edited by big_teee; 01-22-2017, 07:18 PM.
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1980 Dirty Fingers Pickup Rewind
I recently rewound a vintage Dirty Fingers, out of a 1980 Gibson Sonex-180.
The pickup uses 2- 49.2mm Era correct bobbins, the bobbins had no markings top or bottom.
The pickup was already modified for 4 wire cable.
The baseplate is the typical short leg Tim Shaw Era baseplate with same patent number on the rear.
The Cream bobbin was open.
I mic'd the wire at .00225-.0023".
The TPL was around 65-70 turns per layer.
The Large center magnet measured, 2.40"L x .440"W x .210"Thick, gauss was 1150.
The 2 outside magnets measured, 2.38"L x .255"W x .215"Thick, gauss of 1000 each.
The Black bobbin was Polarized South, the Cream bobbin was polarized North.
The Gauss at the top of the screws of each bobbin measured over 700 Gauss.
Which is really stout for a humbucker.
Wonder if the magnets are C5 or C8, the Gauss is less than C8s I've used?
Both bobbins were wound CCW, or Facing the Winder, using right arm, Top Going.
To get the little over 8K+ ohms DCR per bobbin, I used 7100 turns of Natural 44 SP wire.
Here are the before and after pictures.
The Data Layout, includes the mic'd measurements of the cream bobbin.Last edited by big_teee; 10-21-2016, 02:44 PM.
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Originally posted by kayakerca View PostHad a set of Zebra Dirty Fingers Humbuckers from a 1980 Gibson Sonex in the shop today from a local guitar technician. I'm guessing Dirty Fingers based on other stuff I've read.
Was asked to remove the original 2 X 1 conductor braided shield/ground wiring and replace with a 4 conduction, ground, foil shield setup.
Double Screw Bobbins with 3 Magnets per pickup (n-s, s-n, n-s). When I opened up the package, I hadn't realized there was going to be a copper shield layer around the set of coils.
Output P/U A:
Cream Side: 8.15kΩ
Black Side: 8.13kΩ
Output P/U B:
Cream Side: 7.93kΩ
Black Side: 8.4kΩ
The combined output for the original serial hookup was ~ 16.3kΩ as per above @ 74.4°F. To fit ~ 8kΩ on each bobbin, I'm guessing 44 gauge wire.
Just thought I'd pass along the spec's and some pic's for those that might be interested.
[ATTACH=CONFIG]31679[/ATTACH]
[ATTACH=CONFIG]31680[/ATTACH][ATTACH=CONFIG]31681[/ATTACH][ATTACH=CONFIG]31682[/ATTACH]
These have been popular lately.
I also presume the wire is 44.
wonder how many turns to get 8K ?
I calculate it to be around 7000 turns of 44?
Any additional rewind discussion would be great.
Has anyone actually rewound one of these?
The three magnets are also of interest.
T
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Originally posted by Stratz View PostJim, are you sure that the bobbin height (winding area) was .250"- 1/4" ????
Thanks
Here's my wind sheet where you can see the bobbin height I sent the winder to for the various stages I wound it in.
I usually wind a few wire widths less than the bobbin height to get a more rounded looking coil wind.Last edited by kayakerca; 07-27-2016, 02:42 PM.
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Jim, are you sure that the bobbin height (winding area) was .250"- 1/4" ????
Thanks
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Originally posted by big_teee View PostAlso, if you don't mind, please verify the bobbin dimensions.
We are always looking for real life dimensions.
T
Dimensions. . .
Length: 2.11"
Width: one end = .188" - other end = .195"
Height: .25"
Flange: .483" - .495" (depending on where you measured)
All back together and to the luthier.
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Originally posted by copperheadroads View PostTake notice on the direction it is wound & like the guys suggest mark the top & bottom , 6.8k would be a average working output for a mini . let us know how it turns out ..& tpl if you go in the coils.....
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Originally posted by Stratz View Post42 gauge was standard from Gibson. At 6.8 it sounds like he's reading a working mini HB, It may be one of the newer abominations from Gibson. If so it could be either 43 or 44.
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Also, if you don't mind, please verify the bobbin dimensions.
We are always looking for real life dimensions.
Another trick you might consider when winding?
Since the bobbin is open in the middle, I put a filler to keep the bobbin from compressing while winding.
If you mount with screws, you can put 3 small pieces of wood or plastic in the middle.
T
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