Official Luthiers Forum!

Client has bought and is supplying his own fancy tuners for a commission, but I don't have then yet.
Trouble is we're in lockdown.
I'm looking for the headstock thickness to fit them.
I believe they are basically the same fitting dimensions as standard 510s, but can't find anything on the net for a headstock thickness range.

_________________
The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

LMII has a blueprint of the 510 on the website.

Thanks, got info from the Gotoh website for general dimensions (LMII site doesn't even show the threaded bushing)
I need a headstock thickness range.

_________________
The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

Most of the Gotoh tuners for paddle heads have the same headstock thickness range, I think. The A20LX part in your description
is in reference to the button, so I would think it's similar to this one in link. They should be ok with headstocks from 10mm to at least
15mm.
https://www.woodtoworks.com/Gotoh-SGL51 ... _3797.html

I make mine .60"

Colin: the info really is in the Gotoh pdf catalogue, but not that easy to decipher. The standard post is 20.2 mm from base to string hole. The collar is 12.2 mm long. That part number indicates a Grover-style engraved button. Must be pricey!


Sent from my iPad using Tapatalk

The 510's I have can be used from about 13mm to 15mm (just over to 1/2" to almost 5/8"). You could use them on a thinner peghead but you would have to file or grind off some to the bushing because it bottoms out.

9/16" or 14.2mm seems to be the sweetspot.

Kevin Looker

_________________
I'm not a luthier.
I'm just a guy who builds guitars in his basement.
It's better than playing golf.

I use about 15mm
There’s some
Play there. Just no more than 15


Sent from my iPhone using Tapatalk

I am in the process of putting some on a head that is exactly 1/2 inch thick (which was called out as the minimum in a spec sheet somewhere). That is marginally too thin, I'm probably going to have to use extra thick washers. I'm kicking myself for not actually having them in hand when I planed the head plate.

I use them on my archtops and also use 0.60.

_________________
It's not what you don't know that hurts you, it's what you do know that's wrong.

Thanks guys, sounds about the same as the Gotoh 381s I've been using.
Klooker, that's the same way I measure - screw the bush in, find the mid-point, maximum and minimum measurements
Thank you.

_________________
The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

As per Kevin's pics I checked a set of 510's I had on the shelf and they bottomed out at 12.5mm.
When I said 10mm for the minimum headstock thickness I was assuming the bushing would go all the way
home. 'Course it doesn't. Should'a been smart like Kevin and gone and measured.

No worries, I done gone spotted that.
Of course, I've never done anything like that!

_________________
The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

I use 15mm as a target as well...

For 510's I use about 9/16" or 14.29mm, + or - about .75mm

_________________
Joe Beaver
Maker of Sawdust

I was curious as to what this tuner looks like, time on my hands, so I went alookin'.
Aluminum engraved grover style button, as Tim pointed out.

https://g-gotoh.com/product/sgv510z/?lang=en

Button on page 48 in the 2020 cat. Nice.

https://g-gotoh.com/catalog-download/?lang=en

Bit whorehouse for me, but client bought them when he was a "little bit more than tipsy" so wanted to find a use for them.

_________________
The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

You'll have to build guitar to suit

If he wants to unload a few more you can always send them my way. I'm just here to help.

_________________
Joe Beaver
Maker of Sawdust

I think you'll find that they will bottom out at 1/2" (or slightly thicker, very slightly) so you might get buzzing from the washers. I just take the bushings to the belt sander and take off a few threads. I've got a pair of vise grips that have mark on them where I pinch the flat part and sand the threads until I just kiss the vise grips. Easy peasy.