Bridge coming loose? (Full Version)

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FERREREZAKI -> Bridge coming loose? (Jul. 20 2013 14:19:32)

Hi everyone,

Any luthier or other person with knowledge enough to judge if the bridge on my old (but new for me) guitar looks healthy or not? See pic below.

I can barely slip a little part of a papers corner beneath.
The treble side of the bridge has perfect contact with the soundboard all the way.

I recently bought it online from a dealer mention nothing about it and states a luthier overhauled it before shipping.
Maybe it's minor enough not worth mention nor fix?
Maybe it's not even to consider a run-up of a future problem?
Maybe I'm just fussy?

I have no experience of problematic bridges myself but I think it looks suspect, so please tell me what you think. Thanks.

[sm=Smiley Guitar.gif]



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Stephen Eden -> RE: Bridge coming loose? (Jul. 20 2013 16:55:39)

If it's been like that for quite some time and you can barely slip a piece a paper underneath it, I shouldn't think it's a problem.



FERREREZAKI -> RE: Bridge coming loose? (Jul. 20 2013 17:36:51)

I don't know really, I got the guitar like this and I've only had it for a couple of days. I just played it for a bit, say five minutes, when it arrived and then released the tension because I got worried. I bought it as a guitar in good condition and it was quite expensive and on top of my budget already so any extras for repair work would be most unwelcome.[:)]



Sean -> RE: Bridge coming loose? (Jul. 20 2013 17:44:24)

Nobody can tell from just a picture.
How far does the paper slide under, .5mm, 1mm, 2mm, 3mm?
Measure it under string tension.

Looking at those string holes, I wonder what your break angle looks like.



FERREREZAKI -> RE: Bridge coming loose? (Jul. 20 2013 18:07:09)

Sure I can string it up and take some more photos, from the side too?



FERREREZAKI -> RE: Bridge coming loose? (Jul. 21 2013 21:59:22)

Okey, here's how it looks with tension on. Don't think it's much of a difference.


And the break angle, with string height approx 7,5 mm at bridge and 3 mm at 12th fret. Looks little shallow maybe?



Sorry for poor pics

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jshelton5040 -> RE: Bridge coming loose? (Jul. 21 2013 22:30:07)

quote:

ORIGINAL: FERREREZAKI

And the break angle, with string height approx 7,5 mm at bridge and 3 mm at 12th fret. Looks little shallow maybe?


The break angle looks ok to me. You could probably even lower the saddle a bit if you wanted. I wouldn't worry about the loose spot under the bridge unless it starts to grow.



Sr. Martins -> RE: Bridge coming loose? (Jul. 21 2013 22:37:20)

That break angle is almost flat. I imagine that if low/normal tension strings are used, they will be sliding all over the saddle.



estebanana -> RE: Bridge coming loose? (Jul. 22 2013 4:03:45)

The break angle looks fine to me too. There's been research and testing done on break angle by Alan Carruth and his conclusions, which I would trust, are that we previously thought low break angles loose string energy. His experiments showed that after certain point there are diminishing returns and you can get away with as little as 5 degrees in some situations.

I used to try to extreme break angles thinking it gave me an edge in bridge efficiency, but then came to to the conclusion a few years ago that my guitars were just basically getting better as I was trying steeper break angles. I stopped fussing with that. Then I read what Carruth had done and how he experimented and agreed.

If you can slip feeler gauge under there and see how far back that opening goes that could tell you if the bridge is in need of help. I've worked hot hide glue in seams like that and done a little clamping and it seals up the problem.

But I agree with what Eden and John said, play and watch it.



FERREREZAKI -> RE: Bridge coming loose? (Jul. 22 2013 7:08:23)

Thanks for sharing your thoughts everyone.



Sr. Martins -> RE: Bridge coming loose? (Jul. 22 2013 10:49:40)

I dont like too much break angle either but when it is almost flat, strings might slide/roll over the saddle when you pluck them hard near the bridge.



keith -> RE: Bridge coming loose? (Jul. 22 2013 13:10:20)

i have met al on several occasions and enjoy listening to him sharing his knowledge about the physics of the guitar. the man knows his stuff.

here is a link to one of his posts about break angle.


http://www.classicalguitardelcamp.com/viewtopic.php?f=11&t=76492



RobJe -> RE: Bridge coming loose? (Jul. 22 2013 14:37:58)

quote:

I wouldn't worry about the loose spot under the bridge unless it starts to grow.


Grown too much here I think!



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orsonw -> RE: Bridge coming loose? (Jul. 22 2013 14:47:49)

quote:

here is a link to one of his posts about break angle.


http://www.classicalguitardelcamp.com/viewtopic.php?f=11&t=76492


Thank you.

My experience after having 12 hole bridge conversions, increasing break angle is that the strings feel noticably less compliant to my right hand and therefore I can and do play harder. This of course changes the sound and increases the volume my hand produces from the guitar.



tele -> RE: Bridge coming loose? (Jul. 22 2013 17:15:43)

Break angle looks fine to me, too. Altough if going lower I would consider 12 hole conversion.



FERREREZAKI -> RE: Bridge coming loose? (Aug. 18 2013 10:27:43)

Took it to a reputable luthier the other day, he could reach in quite far with his feeler gauge, almost the entire half of the bridge. So I will have to have it repaired before it ends up like the one on RobJe's picture. [:-]



constructordeguitarras -> RE: Bridge coming loose? (Aug. 19 2013 6:08:16)

quote:

Grown too much here I think!


My god, you scared me; when I scrolled down, I thought it was the original poster.



constructordeguitarras -> RE: Bridge coming loose? (Aug. 19 2013 6:12:06)

quote:

And the break angle, with string height approx 7,5 mm at bridge and 3 mm at 12th fret. Looks little shallow maybe?


I think they are very good pictures. I would push those loops of string over the valley down, against the tie block, which would increase the break-over angle.



FERREREZAKI -> RE: Bridge coming loose? (Aug. 19 2013 6:46:32)

quote:

ORIGINAL: constructordeguitarras

quote:

Grown too much here I think!


My god, you scared me; when I scrolled down, I thought it was the original poster.


[:D]

quote:

I think they are very good pictures. I would push those loops of string over the valley down, against the tie block, which would increase the break-over angle.

Thanks Ethan, I'll try that!



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