6 string has front bow on treble side, flat on bass side. Can truss rods fix this?

[vitu2001]

Ive got this '95 Samick YBT6629 neck thru and im looking to set it up. it intonated alright except last 2 strings, as well as some fret buzz on low B string. saddles are pretty much maxed out, and the truss rods were: Bass, almost loose. Treble, very tight.
So i loosened everything, rods and strings. and the relief difference in each side stayed. so im wondering, is the wood twisted? and can i fix it with the rods, adjusting them unevenly?
im asking to the double truss pros here. Can i adjust a little each day to correct the wood itself over a week? I want to exhaust every possibility before i take it to a shop (bass was 300 bucks and probably not worth the luthier work). However, i wanna do everything i can to get this rare and beautiful bass to the best condition i can and use it to gig around. all tips and suggestions are appreciated.

 

[vitu2001]

Ive got this '95 Samick YBT6629 neck thru and im looking to set it up. it intonated alright except last 2 strings, as well as some fret buzz on low B string. saddles are pretty much maxed out, and the truss rods were: Bass, almost loose. Treble, very tight.
So i loosened everything, rods and strings. and the relief difference in each side stayed. so im wondering, is the wood twisted? and can i fix it with the rods, adjusting them unevenly?
im asking to the double truss pros here. Can i adjust a little each day to correct the wood itself over a week? I want to exhaust every possibility before i take it to a shop (bass was 300 bucks and probably not worth the luthier work). However, i wanna do everything i can to get this rare and beautiful bass to the best condition i can and use it to gig around. all tips and suggestions are appreciated.

 

[Karl Kaminski]

the treble side appears to be improperly adjusted/or broken... check that 1st. do you know if this bass has a double action TRs?

 

[Turnaround]

You say that the problem is still there with the strings and truss rods slack. The truss rod is not designed to take a warp out of the neck - it is there to balance the tension of the strings. So, no a truss rod adjustment will not help.

 

[Zooberwerx]

So i loosened everything, rods and strings. and the relief difference in each side stayed. so im wondering, is the wood twisted? and can i fix it with the rods, adjusting them unevenly?
im asking to the double truss pros here. Can i adjust a little each day to correct the wood itself over a week? I want to exhaust every possibility before i take it to a shop (bass was 300 bucks and probably not worth the luthier work). However, i wanna do everything i can to get this rare and beautiful bass to the best condition i can and use it to gig around. all tips and suggestions are appreciated.View attachment 7403047View attachment 7403048

Per conventional wisdom, the fingerboard...or at least one side...should assume a flat profile once the strings are removed and TR is fully slackened OR in a neutral state (dual-acting). You're verifying both sides with a straight edge?

Riis

 

[J Wilson]

I would defer to Turnaround's advice, a guitar repairman with huge experience.

Normally for a double truss rod instrument, in essence you do a trussrod adjustment on each side of the neck. Adjust the BEA side to your desired relief, then adjust the DGC side to exactly the same number.

If these measured adjustments (can't be done by how tight or loose the rod feels) are beyond your expertise (and no shame in that), I'd have it evaluated by a qualified, experienced guitar repair person. It's more money on an inexpensive instrument I suppose, but it's a doorstop if it's not completely playable, a six being a handful already.

 

[T. Brookins]

Don't lose hope! Use foot, knee, and hand to help the neck while tightening the rod!

 

[Dirk Diggler]

Start by loosening the treble side more, that's still too tight, notice the curvature.

Dual rods have a neutral spot, and if you just kept loosening, you caused the bow on that side.

And you really need to be doing all this work with strings at tension.

I didn't know a neck could be that far out of whack, so perhaps there's damage.

Here's to a straighter neck.

 

[Turnaround]

Start by loosening the treble side more, that's still too tight, notice the curvature.

Dual rods have a neutral spot, and if you just kept loosening, you caused the bow on that side.

And you really need to be doing all this work with strings at tension.

I didn't know a neck could be that far out of whack, so perhaps there's damage.

Here's to a straighter neck.

Loosening the truss rod will cause MORE relief, not less.