Dual Truss Rod Adjustment

atonalman · #1 12-26-2009, 10:21 AM

Hello Everybody,

New member here. I wanted to ask if any of you knows the correct way to adjust a dual truss rod. Also, do you know which rod affects which part of the neck

I have a fretless tobias growler with a dual truss rod and I am having some problems with the action. I am trying to get it as low as it can go without buzzing. I've lowered the saddles as far as they can go, and the area from the 12 fret on to the end of the neck is still pretty high. The area of the 1st fret on to the fret is pretty low and there is relief in the neck. I was wondering if I adjustment one truss rod and not the other, it would help my problem.

Does anybody know what might be going on?

Thanks !

Vakmere · #2 12-26-2009, 10:27 AM

Adjust them as you would on a single truss bass, but with 2. Do quarter turns, and make sure you check the straightness across the fretboard as well as down it. If they aren't set up the same, you'll have some wierd side-to-side twisted bowing.

nutso42 · #3 12-26-2009, 11:55 AM

I have one that's setup very oddly. You can only turn ONE the way it's built, but when you adjust one, it automatically adjusts the other.

At least, I THINK that's how it works on mine.....

MNAirHead · #4 12-26-2009, 12:02 PM

you need a torque wrench to do this.. the Jerzy book is stellar for how to setup.. you can download it from his website.