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Nov 28, 2022 - 6:20:45 PM
9 posts since 9/16/2022

I was recently gifted a C.F. Martin Goya GB-75 and am so excited. It came with some loose tension rods and in trying to tighten them I busted the head (guy at guitar center has since explained to me how it should have been done). I'd like to go back with a new head and have it put on, but am unsure of which size banjo head to buy. I measured about 11" on the drum diameter but am unsure of crown height to get and if i have the right measurement. I couldn't find any documentation on the banjo either. Any pointers would be super appreciated!

Nov 29, 2022 - 4:37:35 AM

3186 posts since 4/7/2010

Varchie

Post a picture of the banjo. It would be no surprise to see specifications change over the years and the head that might fit on one version of the banjo model might not fit on another.

To measure for crown height, measure the height of the tension hoop where the neck and rim join.

Bob Smakula

Nov 29, 2022 - 7:32:20 AM

beegee

USA

23156 posts since 7/6/2005

Crown height is sort of self-defining. If the tension hoop sits way proud of the head surface when the head is properly-tensioned, you should probably use a higher-crown head. If the tension hoop pulls down beyond the top of the tone ring, you would need a lower-crown head. I use medium crown heads on all of my banjos, because they are all set-up similarly, but not identically.

Nov 29, 2022 - 7:50:41 AM

3186 posts since 4/7/2010

My concern is that a version of the Goya GB-75 may be a bottle cap banjo, requiring a 11-1/8" low crown head. If it is a standard construction banjo, then likely a 11" medium crown head will be the way to go.

Bob Smakula

Nov 29, 2022 - 9:40:12 AM

beegee

USA

23156 posts since 7/6/2005

It's a standard Mastertone configuration

Nov 29, 2022 - 5:54:04 PM

12477 posts since 10/27/2006

quote:
Originally posted by beegee

It's a standard Mastertone configuration


Yep. Those I have seen are Korean with Masterpiece in the fretboard block.

Somebody has one listed for sale for way too much + exorbitant shipping (good luck with that!)

Goya GB-75

Nov 30, 2022 - 6:12:04 AM

18 posts since 4/23/2011

About 11” on the drum diameter is not correct enough !
You must order a banjo head with the "correct" dimensions to the nearest 1/16”.
There are dimensions of 11”, . 11” 1/16, . 11” 2/16, . 11” 3/16, . … 11” 11/16, . 11” 14/16 . etc …
(eg website Elderly.com).

Nov 30, 2022 - 12:00:32 PM
Players Union Member

RioStat

USA

5986 posts since 10/12/2009

quote:
Originally posted by lode

About 11” on the drum diameter is not correct enough !
You must order a banjo head with the "correct" dimensions to the nearest 1/16”.
There are dimensions of 11”, . 11” 1/16, . 11” 2/16, . 11” 3/16, . … 11” 11/16, . 11” 14/16 . etc …
(eg website Elderly.com).


....unless the banjo has the "standard Mastertone configuration" as has been stated this Goya banjo does, then it's 11", but will still need to specify low, medium, or high crown height.

Nov 30, 2022 - 2:14:38 PM

10286 posts since 8/28/2013

Measure caewfully. It may be based on a Mastertone, but since it's Korean made, sizes may be Metric, and only very close to 11 inches.

Dec 1, 2022 - 3:04:45 PM

Varchie

USA

9 posts since 9/16/2022

Thanks for all the help! I ended up ordering a medium crown 11" diameter head on other advice and kinda a whim. It comes in next week and im gonna take it to my local string music place to have them put it on, if its the wrong size i can just return it. I'll update the post with the correct dimensions and some pictures next week if anyone is interested, ive got finals to study for until then!

Dec 14, 2022 - 12:43:09 PM

Varchie

USA

9 posts since 9/16/2022

Bob Smakula It ended up being a 11" diameter and it needed a high crown (1/2"). Dont believe it is a "bottleneck" banjo

Dec 14, 2022 - 1:07:25 PM

3186 posts since 4/7/2010

I have plenty of that size in stock. Most bluegrass players like the frosted top head.

Bob Smakula
smakula.com

Dec 14, 2022 - 2:39:04 PM

Varchie

USA

9 posts since 9/16/2022

I already got it replaced, just thought id @ you since you seem to collect this sort of knowledge lol. Thanks for the help

Dec 14, 2022 - 5:38:22 PM
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Players Union Member

RioStat

USA

5986 posts since 10/12/2009

quote:
Originally posted by Varchie

Bob Smakula It ended up being a 11" diameter and it needed a high crown (1/2"). Dont believe it is a "bottleneck" banjo


I believe Bob referenced "bottle-cap" banjos, not "bottle-neck" ! smiley




Dec 15, 2022 - 9:22:18 AM

Varchie

USA

9 posts since 9/16/2022

Whoops, meant bottlecap. Those look interesting but I dont believe the GB-75 is one

Dec 15, 2022 - 9:44:19 AM

2624 posts since 2/4/2013

quote:
Originally posted by Varchie

 Those look interesting but I dont believe the GB-75 is one


Those aren't very interesting. They are cheap and a bit nasty.

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