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Gibson G3 Restoring Project

Gibson G3 Restoring Project
« on: October 31, 2011, 04:24:27 AM »
Hello everyone, I'm new to this forum and I'm restoring and old Gibson G3 bass that got to my hand a few years ago, the owner decided it was a piece of crap so he never picked up the body, he only picked up the neck, bolts and neck plate, he wasn't that wrong: the neck was crooked and twisted, according to the guy the bass had been sitting inside a wooden box in a church at the Ixtapa beach in Mexico, the humidity conditions are really extreme down there so the bass also had all metallic parts rusted, pots didn't work and screws were also rusted. The body and neck had been awfully repainted, the headstock logo was also absent. I only knew it was a Gibson because of the neck plate logo.
After thinking a lot about wether restoring it or not i decided to look for a spare neck and luckily i found one on ebay in good condition. Since I live in Mexico it's not that easy getting the parts but I have managed to send them to a friend's house in New Mexico and will be picking them up shortly.
Now here's what I have bought so far:

-1976 vintage Gibson Grabber 3 bass neck, without tuning gears, without nut, i guess it's Maple, the original neck was rosewood or ebony.
-Epiphone 3 point bass bridge, the original was rusty and missing parts, no bridge cover.

I'm currently trying to work out the circuit, I have seen the schematics on flying guitars and also have the original parts of the circuit though they do not work. Now I have read here and there about pots and caps and since I already have some parts in my inventory here's my idea, hope you can comment and help me out on this:

Original circuit:

-300k Volume Pot (The original pot is broken)
-100k Tone Pot (this one may still work as is not damaged)
-0.1 MFD capacitor (this capacitor is missing in my bass)
-Single coil pickups (I got the 3 in good condition)
-Switchcraft 3 position switch. (the original switch still works)
-Output Jack (still looks like it will work)

Ok, so here's my take, I can't explain with detail the reasons for choosing this since I've just read a lot and don't remember exactly the reason why I chose these values, here's where your help comes in :) :

-300k CTS Audio Volume Pot
-300k CTS Audio Tone Pot (I will try using the original pot to see if it works)
-0.47 MFD capacitor (I have a bunch of this value and also have .22 but I have read the later are more suited for guitars)
-Single coil pickups (will use the originals)
-Switchcraft 3 position switch. (will use the original)
-Output jack (will try using the original)

What do you guys think? I guess that to get a better recommendation I have to tell you the kind of sound I'm after, but I'm not after a particular sound, I'd like to get different points of view. I also have to find the neck plate since the owner kept the original along with the crooked neck.

I also own a 1987 Japanese Fender Power Jazz Bass, with dual active/passive circuitry, I may post a few pics later if you guys want to see it. Thanks in advance!

Here's a link to the album with pictures of the bass and parts: http://s72.photobucket.com/albums/i167/stereofish/Gibson%20G3%20Project/

jules

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Gibson G3 restoration
« Reply #1 on: October 31, 2011, 11:45:40 AM »
Hey, and welcome
 
looks like a good project. I'm not sure i'd fit that Epiphone bridge though. Personally, i'd clean up the original - but if you really do want to fit a different bridge, there are better ones that can be just screwed on rather than having big post holes drilled. The three point has a lot of detractors!
 
I'm not sure how much impact the different pot and capacitor sizes will have - I suspect not that much, but finding new parts with correct values shouldn't be too hard

Gibson G3 Restoring Project
« Reply #2 on: November 01, 2011, 03:56:28 AM »
Quote from: jules;16487
Hey, and welcome
 
looks like a good project. I'm not sure i'd fit that Epiphone bridge though. Personally, i'd clean up the original - but if you really do want to fit a different bridge, there are better ones that can be just screwed on rather than having big post holes drilled. The three point has a lot of detractors!
 
I'm not sure how much impact the different pot and capacitor sizes will have - I suspect not that much, but finding new parts with correct values shouldn't be too hard


Thanks for your opinion, actually today I gave the original bridge a look and found it only needs saddle leveling screws and maybe the saddle mounting screws, I found a place where I can get it chrome plated and will take it next week to see how it works out, I'm now planning of using the original bridge as you suggested, I also found a bridge cover on ebay that has the right measures to fit my bass.

About the circuitry, today I soldered it together, I used a 500K Dimarzio pot I had sitting around there and a .22 MFD capacitor, the original 100K tone pot and the original 3 way switch are also functional, put it all together and plugged to an amp, I used my friend's bass to test the circuit by putting the body of my bass close to the strings of my friend's, surprise! It's sounds amazing, all the controls are working fine! Here are some pictures of today's progress, thanks!




jules

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« Reply #3 on: November 01, 2011, 09:54:13 PM »
Yeah, these are fairly simple bridges. I think you'll be able to find some screws that will work somewhere. And as for the bridge itself - just attack with fine wire wool - cleaning it up will take some effort, but nothing that you can't do yourself.

Gibson G3 Restoring Project
« Reply #4 on: November 02, 2011, 05:20:32 AM »
Quote from: jules;16491
Yeah, these are fairly simple bridges. I think you'll be able to find some screws that will work somewhere. And as for the bridge itself - just attack with fine wire wool - cleaning it up will take some effort, but nothing that you can't do yourself.


I will try, thanks a lot man!

 

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