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Another bridge question - sorry!

posted Jan 29, 2014 23:00:33 by SteveTebble
I really wish I could get my head round how to change a bridge on these guitars, but I'm feeling really thick at the moment.

I've just bought one of these:

http://www.ebay.co.uk/itm/Pinnacle-Tune-o-Matic-Nashville-bridge-Chrome-fits-USA-Gibson-guitars-/111095625254?pt=Guitar_Accessories&hash=item19ddd0b626

(I went for the Nashville type because it has more adjustment on the saddles than an ABR-1.)

But it doesn't fit because the threads on the posts are 5mm, and the threads on the original bridge look very slightly larger. Would that be 6mm? They're certainly not 8mm as some have claimed.

So have I bought completely the wrong thing? Or do I just need something extra to make it work?

How do you guys do it?
God give me patience ... but I want it NOW!!
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15 replies
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VinceRadice said Jan 30, 2014 00:04:36
They are M6 x 1.0mm (6mm) a few of my guitars came with those inserts, and I changed them to 8mm. You're in a bit of a sticky spot here. If I were doing this conversion, I would install 8mm inserts to the body and buy the Conversion Kit, which is fairly cheap
[Last edited Jan 30, 2014 00:04:54]
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VinceRadice said Jan 30, 2014 00:24:27
To answer your question, Have I bought the wrong thing?…. not really, A nashville bridge can work, but like most things on Chibsons, the insert size varies. if your guitar had 8mm inserts you would only need to buy the conversion kit. 8mm inserts are easy to get, most aftermarket bridge or tailpiece sets come with inserts. and the 6mm inserts are fairly easy to get out, you just need a 6mm bolt, a socket and some cardboard. I was threatening to do a thread on insert removal, now might be the time.
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SteveTebble said Jan 30, 2014 00:59:30
Yes I was thinking of doing that. Anyone got a source of 8mm inserts? If I take the 6mm ones out and use the inserts that came with the bridge, they will of course need the holes filled in and redrilled, and this will probably show as they're smaller.

The conversion kit you linked to, Vince, is for an ABR-1, and mine is a Nashville. Does that mean my only option is to forget this one and buy an ABR-1 instead?
[Last edited Jan 30, 2014 01:48:45]
God give me patience ... but I want it NOW!!
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VinceRadice said Jan 30, 2014 01:34:49
I didn't think there was a difference, but Ive never fitted a abr-1 or a nashville. I always fit metric bridges, they fit,. and they're easier to adjust, and the only difference is the slot on top of the post. In your case you would still have to change the inserts. What you really need is inserts that fit your body with 5mm threads.
Actually, Because your inserts are 6mm you could drill them out so that the nashville inserts are a snug fit and install them into the existing inserts, There are a few problems with this mod, The hole would have to be exactly the right size, and because of the flange on top of both inserts you may run out of adjustment when lowering the action.
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RhysPrice said Jan 30, 2014 02:43:17
You could try pulling the inserts out screwing in a 6mm stud or bolt into it with a bit of locktite and hacksaw flush, then drill and tap a 5mm or is it an AF thread into it, you would end up with a sort of helicoil, probably be easier to do with an 8mm insert and stud.
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SteveTebble said Jan 30, 2014 02:49:36
I've now sent for a Gotoh bridge that has 8mm studs. Now toying with the idea of an aluminium tailpiece to go with it.
God give me patience ... but I want it NOW!!
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VinceRadice said Jan 30, 2014 02:59:46
ALL the threads are metric, to my knowledge. the gotoh bridge should fit without a problem
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VinceRadice said Jan 30, 2014 03:08:37
Ive got plenty of inserts, and I could make the adapters you need to fit the other bridge. but you would have to send it to Western Australia...
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VinceRadice said Jan 30, 2014 03:15:14
There wouldn't be enough room to tap a 5mm thread into a 6mm bolt, also bolts tend to quite hard, and that makes it difficult to drill and tap straight.
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MichaelWamback said Jan 30, 2014 05:39:25
If the holes in the bridge were 5mm and the posts you have are 6mm, you could have likely taken the bridge to a machine shop and asked them to enlarge the holes for you. Good chance they could pretty easily tap them out an extra mm. You could also get any decent machine shop to whip you up a set of conversion posts with one thread size on the bottom and a smaller thread size on the top. You would just have to make sure you had the correct size adjustment wheels for them to match the threads, along with one of the bushings from the guitar. Likely wouldn't be too expensive for either option.

Guitar Fetish also sells conversion posts to fit a ABR-1 to the more modern Nashville bridge bushings - but I don't think they fit Asian bushings. I'm also thinking the Gibson bushings would be smaller overall than the Asian ones.

But this may be a moot point, since you've already ordered the Gotoh metric bridge.

The two most important things to remember in life: "The only time it's acceptable to work with amateurs is if you are making porn." "If you want to work with clowns, join a circus."
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vambostrausser said Jan 30, 2014 10:36:24
To Steve Tebble

http://awm-guitars.de/product_info.php/info/p301_Saitenhalter-fuer-LP-Aluminium-Chrom.html/XTCsid/99c29f57d5f6515550dec156dfc2f599

It's made of aluminium great finish and these fit Chibsons.I have used three from this supplier. AMW are excellent to deal with and approx £10 represents value for money.
[Last edited Jan 30, 2014 10:37:03]
THE CUSTOMER IS ALWAYS RIGHT,THE GIRL IS MUCH TOO YOUNG TO KNOW THE DIFFERENCE
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SteveTebble said Jan 30, 2014 11:09:36
That looks good and I'd love to order one but the website's all in German and I can't understand it!
God give me patience ... but I want it NOW!!
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vambostrausser said Jan 30, 2014 11:13:23
click to translate or find them on ebay .co.uk
THE CUSTOMER IS ALWAYS RIGHT,THE GIRL IS MUCH TOO YOUNG TO KNOW THE DIFFERENCE
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vambostrausser said Jan 30, 2014 11:17:27
To Steve Tebble

Find A.W.M here

http://stores.ebay.co.uk/awmguitarsparts/
THE CUSTOMER IS ALWAYS RIGHT,THE GIRL IS MUCH TOO YOUNG TO KNOW THE DIFFERENCE
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SteveTebble said Jan 31, 2014 17:11:39
I've just received the Gotoh bridge and it actually drops straight over the studs that are already on there, although I will actually go with the correct ones; they look like a direct replacement for the existing ones, but time will tell.

I'm not sure I'll bother with the aluminium tailpiece though, as I think I might already have one! I took the original one off the guitar today and it feels very light - according to my kitchen scales it only weighs 60 grams.
[Last edited Jan 31, 2014 17:19:09]
God give me patience ... but I want it NOW!!
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