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Help with Hummingbird bracing


Jim53

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Hello folks,

I'm thinking about selling this 1979 HB and was doing some inspecting so as to be able to describe it accurately. Upon looking inside, I was reminded of this bracing which I had never seen before in any model of acoustic guitar. It's prompted me to ask if this is some kind of weird DIY fix-it or if it is typical of the way HBs of this vintage were made. I've just never seen so much lumber inside a guitar before.😊

Here's a pic of the bracing and of the overall HB. Any help is greatly appreciated.

-Jim

 

HB Brace01_small.jpg

HB Front.JPG

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I've never seen bracing like that, but Gibson did some strange things in the 60s and 70s to reinforce their guitars and reduce warranty work.  
 

Some examples in this thread:

https://umgf.com/vintage-gibson-bracing-library-t1364-s160.html
 

Alternatively, the guitar had some belly bulge and you're seeing the repair work...something like a primitive Bridge Doctor.

I hope that isn't how the bridge is attached...

All guesswork. I'm curious if the guitar is particularly heavy and how it sounds. 

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Gibson did install that Fuller brace in the J200 staring around 1962 which was an additional brace which screwed directly into the top bracing and was designed to help stabilize the top.  The thing in the HB though makes that contraption look downright petite.   

I agree with others though that this particular work of art was a post-production fix.  

 

Edited by zombywoof
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Never seen that before.  The bridge plate is different.       I had  a Hummingbird from that era.  The bridge plate was thick.  But not to that scale.     

Edited by slimt
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Thanks guys, The pics are helpful. A few are almost exactly what I've got. I agree that it's probably overkill. That said, the top is very flat.

The guitar sounds pretty good but not as good as a late model Boseman i had a number of years ago and nowhere near as good as my 2006 Martin D-28 Standard. Also, the added wood doesn't make it much heavier than the Martin.

 Looking closer, I can see a gap between the brace and the top, each brace resting on the X braces. The bolts are directly pressed against the top so that if one were to loosen them a bit, whatever change it makes to the bowing of the top would be eliminated. I'm going to try loosening them a bit to see what happens. I'll post results if I get around to doing it anytime soon.

So, the double X bracing is unusual, eh? I take it from the comments, not a good thing. Still, I got a pretty good deal on the HB and I've been happy with it. Arthritis is making it harder to play narrow necks so am in the market for a nice guitar with a 1 3/4" nut width or greater.

Thanks again for the comments. Really helpful!!

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2 hours ago, Jim53 said:

So, the double X bracing is unusual, eh? I take it from the comments, not a good thing. Still, I got a pretty good deal on the HB and I've been happy with it. Arthritis is making it harder to play narrow necks so am in the market for a nice guitar with a 1 3/4" nut width or greater.

Thanks again for the comments. Really helpful!!

Just to avoid any misunderstandings, we need to clear the following :

The double-X was introduced in the early 70s and is seen as one of the worst ideas in the acoustic - certainly Gibson's - history ever. It may have fortified the guitars and kept a number of tops from damage, but the sound died and the concept has never been re-used since it was dismissed aprrox. 10-12 years later. 

That said, it's still possible to find 2X square Gibsons which have developed their own individual fine even generous voice.                                                                                                                                                                  But they remain in an alternative category - and their fate is now and again to be described as full of socks, , , which in the case above should/could be changed to full of blocks.

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I f I recall in the earlier 1970s Gibson used a smaller bridge plate.  I am not sure when Gibson went with the space filling full plate though.  

The Double X bracing was a viable pattern.  I owned a ca. 1940 Regal jumbo 12 string with it.  But it was all about execution and Gibson gave it a bad name.  

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1 hour ago, 75 Hummingbird said:

Hi Jim ,the double x brace is not unusual .It was the bracing system used by Gibson generally in the 70`s ...but into the early 80`s to .The system is thought to be less toneful ,more rigid and or less appealing .

To each their own , some Gibson's of this design are beautiful and great sounding guitars. 

Exactly - there is a general consensus about this. And if someone wants to get an idea about the ratings, check'n'compare the tags. They say it all, , ,                                                                                                                                                 but won't of course reveal which of the so called Norlins offer that certain attractive double-X-factor. . 

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12 hours ago, 75 Hummingbird said:

Hi Jim ,the double x brace is not unusual .It was the bracing system used by Gibson generally in the 70`s ...but into the early 80`s to .The system is thought to be less toneful ,more rigid and or less appealing .

To each their own , some Gibson's of this design are beautiful and great sounding guitars. 

He was not questioning the Double X bracing but the two added braces. 

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1 hour ago, zombywoof said:

He was not questioning the Double X bracing but the two added braces. 

Yes, you are right - still the picture was an opportunity to talk a bit about the double X (which here looks fat/thin) and the plate.

On 12/15/2021 at 1:18 AM, Jim53 said:

Looking closer, I can see a gap between the brace and the top, each brace resting on the X braces. The bolts are directly pressed against the top so that if one were to loosen them a bit, whatever change it makes to the bowing of the top would be eliminated. I'm going to try loosening them a bit to see what happens. I'll post results if I get around to doing it anytime soon.

Regarding the 2 extra logs, I'm almost sure they can be removed without fatal results. The top may change shape/curve, but it should be possible to compensate for that. 

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13 hours ago, E-minor7 said:

Exactly - there is a general consensus about this. And if someone wants to get an idea about the ratings, check'n'compare the tags. They say it all, , ,                                                                                                                                                 but won't of course reveal which of the so called Norlins offer that certain attractive double-X-factor. . 

The obsession with bracing is a fairly recent development.  Pretty much if you could not see it, it was not worth mentioning.  These days bracing ranks probably second only to the the Tone Wood Kool Aid.

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8 hours ago, E-minor7 said:

Yes, you are right - still the picture was an opportunity to talk a bit about the double X (which here looks fat/thin) and the plate.

Regarding the 2 extra logs, I'm almost sure they can be removed without fatal results. The top may change shape/curve, but it should be possible to compensate for that. 

Why bother removing the additional bits ?  Sell it as is 1500.00 U.S 

. Have a good day .

Edited by 75 Hummingbird
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