CF rod reinforcement query

Kalimna

GSP - sorry, i was typing above reply when you posted yours and missed it.
I have ordered the rods anyway, so we'll see. Perhaps with using ripple maple, the normal strength of QS timber will be attenuated a little. And it will only be a 30" scale too, probably a 16-19 fret body join.

Adam

GSPBASSES

Kalimna said:

Hmmm, and that rather depends on which timber is being used, doesnt it?
Thing is, i dont have time (3-necked ukulele plus bass guitar for Chrimbo) to get it wrong, so am trying to cover 60 6everything before I start.
So. Should I just go with the box section and hope for the best (rippled maple for bass neck and maple or afromosia for uke)?

Cheers,
Adam

Surely a ukulele  would never need its neck stiffening, I'm not even sure if you really need a truss rod in one. I've built a few ukuleles put truss rods in them, but the rod was always in neutral. The last ukulele I built was 15 inch scale, see photo below. 

No, it doesn't really depend on what wood your using. Any wood that suitable to make a guitar neck will always be stronger if it's quartersawn.

Kalimna

Ok. All excellent advice, thank you
The cf rod for the uke was in place of a truss rod as one neck will be baritone and one guitarlele scale. The 2 concert ukes Ive built so far were both made without any reinforcement.
Cheers,
Adam

WezV

The hollow one will be less stiff than a solid bar, but still a lot stiffer than nothing at all.   It helps to avoid going too stiff