Beau Hannam Ukuleles
Well-known member
Here is the bracing i have used for this tenor guitar.
SHAPE
As this is my first tenor guitar, I ordered both tenor guitar plans offered at Elderly Instruments as reference for general size and shape.
One plan is Ladder braced (no thanks). The better plan in every way shows the typical two lower tone bars beneath the X. (see the pic below)
(This is the best plan- http://www.elderly.com/books/items/113-55.htm)
I changed the shape around using a combination of the plans, my Parlour guitar, 000 and LOO guitar shapes along with my trusty French curve. The Gibson Tenor guitar shape is my favourite (over the slightly clunky looking Martin 000'ish shape). Actually Gibson also used their L00 shape directly for some of their tenor guitars.
I stayed with the 23" scale, 14 frets to body. Sound hole is 82mm, which is a classical guitar size SH and the same as shown on the plans. I added a side sound port as a freebie for the customer as i'm that kinda guy.
TOP AND BRACING
Sinker redwood top is about 0.090-0.095""'ish but after binding I will thin the edges a touch more to bring out the monopole (know your poles). Bridge plate is .080"'ish Indian RW.
I transgressed from the plans again by using a bracing pattern consisting of a combination of X and 3 fan, all 1/4" wide. This type of bracing first came to my attention with Tony Mcmanus's PRS signature guitars and is inspired by Antonio Torres, a classical maker.
https://www.youtube.com/watch?v=YGRnUYRrsiA
I felt that the two lower tone bars (as found in the plans) would prove to be to stiff as every plan ive ever seen show braces that are ALWAYS to stiff- The Hana Lima plans are the same.
I have used this X and fan bracing on guitars before and it has proven to work very well giving more flex accross the grain which is needed in such an instrument as a tenor guitar or uke or classical guitar which don't have the string tension to drive a top in ways found on steel string guitar (long diapole, cross diapole). A uke is ALL about the monopole, across the grain vibration. You can only ask so much of so few inches (Hey Niq?
Fan Braces
I used 3, all of which slope down to nothing from a height of about 1/4" about 1" behind the bridge.
X Brace
I only scalloped the bass side of the X brace leaving the treble side a long slope- this is a building technique of Dana Bourgeois who is famous for his fine voicing of tops. I have done this before when voicing tops at Gilet Guitars in Sydney. If this technique proves to be a bit stiff for a Tenor guitar, it is quite easy (although annoying) to reach in the sound hole to scallop the treble side of the X after it is strung up.
Read this article:
http://www.pantheonguitars.com/voicing.htm
Watch these vids:
https://www.youtube.com/watch?v=O10hREMRufU
and
https://www.youtube.com/watch?v=bNchJIfT2O8
If your saying "all these links are about guitar tops, im not reading that", well, then you will never be a good luthier.
In another Tenor guitar thread, Aaron Keim mentioned that the tenor guitar should be approached with the view that it is a slightly larger baritone uke, rather then a small guitar. I agree, with the caveat that the difference between a slightly larger baritone uke and a small parlour guitar is only the use of steel strings on the later.
If their is much interest, i can take pics n measurements of brace heights etc.
I hope this all helps with your future builds (and mine).
SHAPE
As this is my first tenor guitar, I ordered both tenor guitar plans offered at Elderly Instruments as reference for general size and shape.
One plan is Ladder braced (no thanks). The better plan in every way shows the typical two lower tone bars beneath the X. (see the pic below)
(This is the best plan- http://www.elderly.com/books/items/113-55.htm)
I changed the shape around using a combination of the plans, my Parlour guitar, 000 and LOO guitar shapes along with my trusty French curve. The Gibson Tenor guitar shape is my favourite (over the slightly clunky looking Martin 000'ish shape). Actually Gibson also used their L00 shape directly for some of their tenor guitars.
I stayed with the 23" scale, 14 frets to body. Sound hole is 82mm, which is a classical guitar size SH and the same as shown on the plans. I added a side sound port as a freebie for the customer as i'm that kinda guy.
TOP AND BRACING
Sinker redwood top is about 0.090-0.095""'ish but after binding I will thin the edges a touch more to bring out the monopole (know your poles). Bridge plate is .080"'ish Indian RW.
I transgressed from the plans again by using a bracing pattern consisting of a combination of X and 3 fan, all 1/4" wide. This type of bracing first came to my attention with Tony Mcmanus's PRS signature guitars and is inspired by Antonio Torres, a classical maker.
https://www.youtube.com/watch?v=YGRnUYRrsiA
I felt that the two lower tone bars (as found in the plans) would prove to be to stiff as every plan ive ever seen show braces that are ALWAYS to stiff- The Hana Lima plans are the same.
I have used this X and fan bracing on guitars before and it has proven to work very well giving more flex accross the grain which is needed in such an instrument as a tenor guitar or uke or classical guitar which don't have the string tension to drive a top in ways found on steel string guitar (long diapole, cross diapole). A uke is ALL about the monopole, across the grain vibration. You can only ask so much of so few inches (Hey Niq?
Fan Braces
I used 3, all of which slope down to nothing from a height of about 1/4" about 1" behind the bridge.
X Brace
I only scalloped the bass side of the X brace leaving the treble side a long slope- this is a building technique of Dana Bourgeois who is famous for his fine voicing of tops. I have done this before when voicing tops at Gilet Guitars in Sydney. If this technique proves to be a bit stiff for a Tenor guitar, it is quite easy (although annoying) to reach in the sound hole to scallop the treble side of the X after it is strung up.
Read this article:
http://www.pantheonguitars.com/voicing.htm
Watch these vids:
https://www.youtube.com/watch?v=O10hREMRufU
and
https://www.youtube.com/watch?v=bNchJIfT2O8
If your saying "all these links are about guitar tops, im not reading that", well, then you will never be a good luthier.
In another Tenor guitar thread, Aaron Keim mentioned that the tenor guitar should be approached with the view that it is a slightly larger baritone uke, rather then a small guitar. I agree, with the caveat that the difference between a slightly larger baritone uke and a small parlour guitar is only the use of steel strings on the later.
If their is much interest, i can take pics n measurements of brace heights etc.
I hope this all helps with your future builds (and mine).