[QUOTE=Sam Price] Well let's see for starters...
DGDAE
GDADA
GCGCG
GDGDG
Would like to squeeze in a C and another D tuning too...
Well, I just want to be able to experiment!!
Loads of different gauges etc is good advice
[/QUOTE]
Sam,
With those tunings you might be better off with the shorter scale citterns - around 23" scale length. You'll have to adapt this to a guitar shape.
[QUOTE=Sam Price]With the bracing, am I right in saying that a heavier brace structure is needed for the top?[/QUOTE]
Personally I wouldn't. Like any instrument you want it to be as responsive as possible - too heavy bracing and you will have a very stable . . but boring sounding instrument. You can see the bracing I used on the build on my website and that instrument had 230lbs string tension. it sounds wonderful.
The trick is picking the string gauges to give enough tension for the sound and top but not too much for the neck and bridge. Double course strings mean you can have lower tension and still get a good sound and feel when you play. I suspect you could pick strings at around 200lbs overall tension that would sound very good.
The other thing you have to decide is if you want unison or octave pairs of strings. Octaves give you a lot more problems in terms of intonation.
Dave White38990.5568402778
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Dave White
De Faoite Stringed Instruments". . . the one thing a machine just can't do is give you character and personalities and sometimes that comes with flaws, but it always comes with humanity" Monty Don talking about hand weaving, "Mastercrafts", Weaving, BBC March 2010