PRS Dual Action Truss Rod Question

[clcwarlock]

I have always been under the impression that my core PRS guitars have a dual truss rod system in the neck. What I mean by this is 2 rods installed as one piece, one being shorter than the other that can provide back bow turning the nut tight or can provide relief loosening the nut. So I am asking, is dual action possible with a single rod? I am guessing only with a concave route built into the neck. See the video below around the 9:25 mark where Paul talks about truss rods. PRS website has always said they use a dual action truss rod. I am only asking because I find it fascinating that a lot of boutique builder opt for a single truss rod design. Since I have building more I been curious about this.




https://youtu.be/Ut4S-LRlPpk

 

[Simon Says]

Dual action is a single rod

The way it works is science but I can't explain it because I'm not scientist

 

[Deleted member 5962]

The way it works is science but I can't explain it because I'm not scientist

Dude, this is the internet. You can explain anything you want. You don't even have to be right. Take advantage of the freedom you were afforded by Al Gore when he created this stuff.

 

[Simon Says]

Dude, this is the internet. You can explain anything you want. You don't even have to be right. Take advantage of the freedom you were afforded by Al Gore when he created this stuff.

Googled, the answer is "microscopic air pockets"

 

[bodia]

The two nuts on the rod enable a single rod to act in the fashion of dual action. If it can adjust both ways, it's dual action

 

[Deleted member 5962]

The two nuts on the rod enable a single rod to act in the fashion of dual action

TWSS

 

[bodia]

TWSS

I tossed that softball out there for ya!

 

[Deleted member 5962]

I tossed that softball out there for ya!

Right down the middle! Just like I like it!!

TWSS

 

[clcwarlock]

Thanks, Bodia is correct. The single truss rod has threads on each end. The nut is not removable and attached at the top. So basically two sets of threads with two nuts and a welded nut at the end that turns the whole rod. The only thing I am not sure about now is what kind of a curved channel it is recessed in. Not at all like a Gibson single action truss and not at all like a dual action two rod truss rod.

 

[sergiodeblanc]

The two nuts on the rod

I’ll give you two nuts on the rod

 

[bodia]

I’ll give you two nuts on the rod

Wouldn’t have it any other way

 

[gush]

The two nuts on the rod enable a single rod to act in the fashion of dual action. If it can adjust both ways, it's dual action

I want to comment soooooo bad......

 

[Tony M.]

There's a good joke in here someplace but right now I'm too tired to put it together.

 

[Bill SAS 513]

Children, Children...(TONS of good jokes)

So, I love this science crap...(I'm not really too smart, but I did stay at a Holiday Inn Express last night)...
I have both tightened and relaxed PRS truss rods numerous times, and they absolutely work as advertised.
(My experience is on Core, and S2...I know I've tightened the TR on an SE and it worked great, as well. Not sure if SE's are double acting, though)
Also, I might add...with just a fraction of a turn making a noticeable difference.

Good timing on this thread, as I just noticed an issue on one of my cores...(GG5 Bass)...
When I tighten the nut (clockwise, oh and TWSS) to remove some of the neck's relief, it works fine, but when I remove the wrench/tool, the nut returns just a bit (Counter Clockwise) on its own.
The neck relief was successfully adjusted, mind you. I just haven't experienced/noticed this before.
Anyone else experience this????

Side note: I set my basses up with 45-125 nickel wound (5 String) , with pretty much a flat fingerboard...and I can say that PRS's fret work is frickin awesome.

 

[JMintzer]

TWSS

 

[Deleted member 5962]

Can I borrow your shirt for the next Experience?