Yamaha GC82S

WoodNString
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Re: Yamaha GC82S

Post by WoodNString » Sun Oct 30, 2016 4:23 am

For cashew finishes, look at any Kohno. It is more than the color though, being a slightly thicker finish than fp.

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Sun Oct 30, 2016 3:05 pm

WoodNString wrote:For cashew finishes, look at any Kohno. It is more than the color though, being a slightly thicker finish than fp.
Okay:
Masaki Sakurai.JPG
yamaha_gc82s_zoom.jpg
The colour is more orange...however it is hard to be sure from photos taken with different lighting.

What are the +s & -s of cashew finish relative to french polish?
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1971 Yamaha GC-10

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Sun Oct 30, 2016 7:04 pm

I just found a very useful string tension calculator on the D'Addario site: http://stringtensionpro.com/Search

Using this calculator with the D'Addario EJ46 and EJ44 strings and the appropriate scale, I get the following results:

GC82S:
D’Addario EJ46 HT @ 650mm (14.418 average)

D’Addario EJ44 EHT @ 650mm (14.8 average)

GC-10:
D’Addario EJ46 HT @ 662mm (14.958 average)

D’Addario EJ44 EHT @ 662mm (15.352 average)

Unless I receive further information to the contrary, I will conclude that using the D'Addario EJ44 (EHT) strings should not be any problem on the GC82S. Nevertheless, I have realized that choosing a set of strings for a guitar that I have never played is pointless. I will have to experiment once I have the GC82S to find out which strings I will prefer. That said, it sounds as though I should get the action set up to a compromise that will allow some range of experimentation. Any thoughts on how to do this?

I have also found that Yamaha has its own strings "Grand Concert S10" with the following diameters:

E .028
B .033
G .041
D .029
A .036
E .044

Anyone know the manufacturer or string tensions?
1971 Yamaha GC-10

Lovemyguitar
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Re: Yamaha GC82S

Post by Lovemyguitar » Sun Oct 30, 2016 7:37 pm

[edit - duplicate]
Last edited by Lovemyguitar on Sun Oct 30, 2016 7:40 pm, edited 1 time in total.

Lovemyguitar
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Re: Yamaha GC82S

Post by Lovemyguitar » Sun Oct 30, 2016 7:39 pm

Beowulf wrote:...I have also found that Yamaha has its own strings "Grand Concert S10" with the following diameters...

Anyone know the manufacturer or string tensions?
I don't know who makes them, but those are almost exactly the same measurements as the D'Addario EJ46HT, are they not?

Oh, and I would not do anything to the top -- just leave it natural, and it will darken with age. I would think that a coloured finish would stay the same forever? A natural spruce top often looks better in person than in photos, I have found.

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Sun Oct 30, 2016 8:04 pm

Lovemyguitar wrote:
Beowulf wrote:...I have also found that Yamaha has its own strings "Grand Concert S10" with the following diameters...

Anyone know the manufacturer or string tensions?
I don't know who makes them, but those are almost exactly the same measurements as the D'Addario EJ46HT, are they not?

Oh, and I would not do anything to the top -- just leave it natural, and it will darken with age. I would think that a coloured finish would stay the same forever? A natural spruce top often looks better in person than in photos, I have found.
Yes...I have decided to leave the top natural for the reasons you note. Also, I already have a stained spruce top.

You are correct...pretty close:

J4601 E 0.0285....028
J4602 B 0.0327....033
J4603 G 0.0410....041
J4604 D 0.030.....029
J4605 A 0.036.....036
J4606 E 0.044.....044
1971 Yamaha GC-10

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Sun Oct 30, 2016 10:40 pm

WoodNString wrote:For cashew finishes, look at any Kohno. It is more than the color though, being a slightly thicker finish than fp.
I've decided to stay with the Yamaha finish: it uses all natural shellac and involves 300 micro thin coatings of an all natural shellac over a period of three months. :bravo: Now I understand the 6-8 month build process.
1971 Yamaha GC-10

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HNLim
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Re: Yamaha GC82S

Post by HNLim » Sun Oct 30, 2016 10:50 pm

Beowulf wrote:
WoodNString wrote:For cashew finishes, look at any Kohno. It is more than the color though, being a slightly thicker finish than fp.
I've decided to stay with the Yamaha finish: it uses all natural shellac and involves 300 micro thin coatings of an all natural shellac over a period of three months. :bravo: Now I understand the 6-8 month build process.
I will still say that the marquetry on the Yamaha GC82 is second to none (maybe with the exception of the Yamaha GC30A), and it is going to be one of the finest finished guitar that you can buy.

I will really look forward to hearing your GC82S three months after you receive your guitar.

I love the even sound and rich tone of my 1978 Yamaha GC30A and I am very sure you will love your Yamaha GC82S.

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Mon Oct 31, 2016 2:37 pm

I have discovered other differences between the GC82S and the GC82C...I think. The two guitars derive from the GC71 and GC70C respectively. Apart from the Spruce/Cedar top, the GC71 was developed to incorporate Segovia's recommendations. Two things of note on the GC71 relative to the GC70:

1. It produces a milder tone due to the reduced angle of the head.

2. The body dimensions and top bracing were adjusted to provide greater bass response.

The body depths differ as follows on the GC82 series:

GC82S: 93-101mm

GC82C: 94-99mm
1971 Yamaha GC-10

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Mon Oct 31, 2016 2:43 pm

HNLim wrote:
Beowulf wrote:
WoodNString wrote:For cashew finishes, look at any Kohno. It is more than the color though, being a slightly thicker finish than fp.
I've decided to stay with the Yamaha finish: it uses all natural shellac and involves 300 micro thin coatings of an all natural shellac over a period of three months. :bravo: Now I understand the 6-8 month build process.
I will still say that the marquetry on the Yamaha GC82 is second to none (maybe with the exception of the Yamaha GC30A), and it is going to be one of the finest finished guitar that you can buy.

I will really look forward to hearing your GC82S three months after you receive your guitar.

I love the even sound and rich tone of my 1978 Yamaha GC30A and I am very sure you will love your Yamaha GC82S.
Me too! :casque: :merci:
1971 Yamaha GC-10

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Mon Oct 31, 2016 9:33 pm

Confirmation from Yamaha support on the string tension question:

"In regards to the overall string tension of a "Normal tension", "high Tension" and an "Extra Hard Tension" set of Classical Guitar Strings, going from a "Normal" tension to an Extra Hard" tension only adds approximately 8 to 10% extra tension to the neck and bridge of the guitar. This is actually less tension difference than tuning your guitar up a semitone (almost a 12% increase in tension). That being said, using Extra Hard Tension strings should not affect the Cedro neck or the top/bridge of the GC82S at all."
1971 Yamaha GC-10

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Debussychopin
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Re: Yamaha GC82S

Post by Debussychopin » Sun Nov 13, 2016 10:44 am

Beowulf wrote:Confirmation from Yamaha support on the string tension question:

"In regards to the overall string tension of a "Normal tension", "high Tension" and an "Extra Hard Tension" set of Classical Guitar Strings, going from a "Normal" tension to an Extra Hard" tension only adds approximately 8 to 10% extra tension to the neck and bridge of the guitar. This is actually less tension difference than tuning your guitar up a semitone (almost a 12% increase in tension). That being said, using Extra Hard Tension strings should not affect the Cedro neck or the top/bridge of the GC82S at all."
Way intriguing

Yamaha GL1

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Mon Nov 14, 2016 3:31 am

Debussychopin wrote:
Beowulf wrote:Confirmation from Yamaha support on the string tension question:

"In regards to the overall string tension of a "Normal tension", "high Tension" and an "Extra Hard Tension" set of Classical Guitar Strings, going from a "Normal" tension to an Extra Hard" tension only adds approximately 8 to 10% extra tension to the neck and bridge of the guitar. This is actually less tension difference than tuning your guitar up a semitone (almost a 12% increase in tension). That being said, using Extra Hard Tension strings should not affect the Cedro neck or the top/bridge of the GC82S at all."
Way intriguing
Intriguing in what sense?
1971 Yamaha GC-10

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Debussychopin
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Re: Yamaha GC82S

Post by Debussychopin » Mon Nov 14, 2016 4:14 am

Huh what? Intriguing. Your info there is intriguing to me. The info you discovered. No?

Yamaha GL1

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Beowulf
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Re: Yamaha GC82S

Post by Beowulf » Mon Nov 14, 2016 7:27 pm

Debussychopin wrote:Huh what? Intriguing. Your info there is intriguing to me. The info you discovered. No?
I just wondered if it was something in particular about the information. :D
1971 Yamaha GC-10

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