Two Truss Rods?

[Skit1]

I was just about to adjust the Truss Rod on my new bass and when I got the cover off I discovered that there where infact two truss rods!

I've never had experience with Two truss rods before so I was wondering how I would go about adjusting them?

Do the both have to be turned in equal measures or should I just adjust one?

[BillMason]

Originally Posted by Skit1

I was just about to adjust the Truss Rod on my new bass and when I got the cover off I discovered that there where infact two truss rods!

I've never had experience with Two truss rods before so I was wondering how I would go about adjusting them?

Do the both have to be turned in equal measures or should I just adjust one?

Try Googling the model and manufacturer, looking for a manual.

[202dy]

Assuming you have a Rickenbacker?

Two truss rods present some unique opportunities and some unique problems. Generally speaking, both rods should be adjusted when setting the relief in the neck. Adjusting one rod will certainly have an effect on the entire neck. Plus the power of two rods allow for some fine tweaking. One way to look at it as is each rod can adjust it's own side of the neck, i.e. bass and treble. By making very small adjustments to each rod the neck can have two separate reliefs, bass and treble. If done correctly, the treble strings may lie a little closer to the fingerboard than the bass strings and can be very comfortable to play. But when adjusting remember that tweaking one rod will have an overall effect on the neck so it is a bit of a balancing act. Make small moves and you will do well.

[Ibanezzer]

Originally Posted by 202dy

Assuming you have a Rickenbacker?

Two truss rods present some unique opportunities and some unique problems. Generally speaking, both rods should be adjusted when setting the relief in the neck. Adjusting one rod will certainly have an effect on the entire neck. Plus the power of two rods allow for some fine tweaking. One way to look at it as is each rod can adjust it's own side of the neck, i.e. bass and treble. By making very small adjustments to each rod the neck can have two separate reliefs, bass and treble. If done correctly, the treble strings may lie a little closer to the fingerboard than the bass strings and can be very comfortable to play. But when adjusting remember that tweaking one rod will have an overall effect on the neck so it is a bit of a balancing act. Make small moves and you will do well.

Hey thanks for you answer, I too was thinking about this question recently as by Ibanez BTB bass has two truss rods in it as well. Unfortunatley the manual for ibby basses leaves out any detail on the process and simply says "have a qualified technician handle truss rod adjustments".

[SGT. Pepper]

Those rods oppose each other. Lets say you want to straighten the neck. The rod on the bass side you would turn clockwise while the rod on the treble side you would turn counterclockwise. I hate double rods they are a pain in the arse!

[Son of Magni]

Originally Posted by SGT. Pepper

Those rods oppose each other. Lets say you want to straighten the neck. The rod on the bass side you would turn clockwise while the rod on the treble side you would turn counterclockwise. I hate double rods they are a pain in the arse!

I have never heard of an arrangement like that. On every dual rod neck I've seen the two rods act the same, one for the bass side and the other for the treble side. What kind of bass are you talking about?

Turn both rods the same amount in the same direction always, unless you are specifically trying to change the relative amount of relief side to side.

[SGT. Pepper]

Originally Posted by Son of Magni

I have never heard of an arrangement like that. On every dual rod neck I've seen the two rods act the same, one for the bass side and the other for the treble side. What kind of bass are you talking about?

Turn both rods the same amount in the same direction always, unless you are specifically trying to change the relative amount of relief side to side.

Ibanez BTB

[202dy]

Dual action truss rods work against one another to adjust the neck into compression or tension, thereby forcing the neck into negative or positive relief. But a neck with two truss rods working against one another?

Please explain the physics involved.

[taphappy]

Originally Posted by 202dy

Dual action truss rods work against one another to adjust the neck into compression or tension, thereby forcing the neck into negative or positive relief. But a neck with two truss rods working against one another?

Barking on a dead thread - but. I assume this was meant to say "dual action truss rods work with each other to adjust the neck into compression or tension"...

Both of my 6's have dual truss. Now, luckily one of 'em is my frankenbass - Washburn MB-6, defretted. It really doesn't make my fingers happy, so it's now about to be picked apart electronically, and played with truss side.

I would prefer not to mess it up, though.

Are BTB's the only one with the opposing truss?

-tap

[202dy]

Originally Posted by taphappy

Barking on a dead thread - but. I assume this was meant to say "dual action truss rods work with each other to adjust the neck into compression or tension"...

Both of my 6's have dual truss. Now, luckily one of 'em is my frankenbass - Washburn MB-6, defretted. It really doesn't make my fingers happy, so it's now about to be picked apart electronically, and played with truss side.

I would prefer not to mess it up, though.

Are BTB's the only one with the opposing truss?

-tap

A dual action truss rod (singular) will adjust a neck into both a front bow or a back bow utilizing either tension or compression, respectively.

Dual truss rods are utilized by builder to give the tech or user control over both the treble and bass sides of the the neck individually. The truss rods used may or may not be dual action rods.

The terms "dual action truss rod" and "dual truss rods" are mutually exclusive.

[taphappy]

Oh. Heh. duhr.

Welp. Learn something new every day Thanks!