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8 String Neck Trussrods


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Quick consensus 8 string builders...

On an 8 string neck (28.5" scale or 27.5" haven't decided yet) do you use 2 trussrods or 1?

I am trying to decide which way I am going to go on my first 8 string neck. I am positive that 1 will be fine... just want to know what everyone else is doing.

Also do you guys run them parallel or let them fan out as they approach the heal?

Pictures would be nice.

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I can put some pics up of the finished product, but I didn't take any along the way.

I recently did my first dual-truss neck and I left a thin wall of wood in between the channels. Didn't stagger them I kept them parallel to the center.

Next time out : I am thinking of routing the whole channel out and adding a CF bar down the center as the 'wall' between them.

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Quick consensus 8 string builders...

On an 8 string neck (28.5" scale or 27.5" haven't decided yet) do you use 2 trussrods or 1?

I am trying to decide which way I am going to go on my first 8 string neck. I am positive that 1 will be fine... just want to know what everyone else is doing.

Since I primarily build 8 string baritone guitars I can reply to your question:

I only use one 18'' truss rod and it works great up to 30'' scales so no worries :D

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I can put some pics up of the finished product, but I didn't take any along the way.

I recently did my first dual-truss neck and I left a thin wall of wood in between the channels. Didn't stagger them I kept them parallel to the center.

Next time out : I am thinking of routing the whole channel out and adding a CF bar down the center as the 'wall' between them.

Thanks.

I am planning about 3/8" between them give or take... I guess I am doing 2 rods since everything is already setup...

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Quick consensus 8 string builders...

On an 8 string neck (28.5" scale or 27.5" haven't decided yet) do you use 2 trussrods or 1?

I am trying to decide which way I am going to go on my first 8 string neck. I am positive that 1 will be fine... just want to know what everyone else is doing.

Since I primarily build 8 string baritone guitars I can reply to your question:

I only use one 18'' truss rod and it works great up to 30'' scales so no worries :D

That is good to know. I am not sold on the whole dual trussrod thing... Most guys claim they use it to correct twists. The only place I think using 2 trussrods is needed is on a 6 string 34 - 35" scale bass neck.

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That is good to know. I am not sold on the whole dual trussrod thing... Most guys claim they use it to correct twists. The only place I think using 2 trussrods is needed is on a 6 string 34 - 35" scale bass neck.

Oh the marketing guys... They forget that a twist can not be corrected vertially, a twist is horizontal... :D Dual truss rods sound more commercial you know?

I've invented a new reinforcement system using an exclusive material which I am currently using for building nuts and string retainers, the neck cant twist anymore, more to come....

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That is good to know. I am not sold on the whole dual trussrod thing... Most guys claim they use it to correct twists. The only place I think using 2 trussrods is needed is on a 6 string 34 - 35" scale bass neck.

Oh the marketing guys... They forget that a twist can not be corrected vertially, a twist is horizontal... :D Dual truss rods sound more commercial you know?

I've invented a new reinforcement system using an exclusive material which I am currently using for building nuts and string retainers, the neck cant twist anymore, more to come....

Excellent let us know when it is done!

:D

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Ok decision made. Since this is a prototype and relatively short scale I am doing one trussrod...

The fear of string tension is unfounded, myself and blackmachine have proved this many many many times already by exclusively using one single truss rod :D

You can add me to the list...

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Have you seen the new "first ever" Jackson 8 string which was presented at the NAMM show? :D

The guy placed the truss rod diagonally...

It also has a new design feature that Pablo came up with called the Jackson Asymetrical Neck/ Offset Trussrod. Basically the neck profile is fatter near the lower strings and gradually tapers as it gets to the high E string. The Trussrod is also offset and runs through the thicker portion of the neck.

This is a killer. It is Jackson's first ever 8 String Guitar. It is built by Master Builder Pablo Santana. Here he is with his monster of a creation. Hand built baby!!! It has alder body with a quarter sawn maple center blank. It also has a new design feature that Pablo came up with called the Jackson Asymetrical Neck/ Offset Trussrod. Basically the neck profile is fatter near the lower strings and gradually tapers as it gets to the high E string. The Trussrod is also offset and runs through the thicker portion of the neck. It is awesome. This is going for $4200. It is a piece of Jackson History....the very first Jackson 8 String Guitar.

I cant stand that headstock...

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... that headstock shape is just a longer version of a Jackson shape, and I like the Jackson headstock shape. It's un-practical, but it looks good........ that HS is not unlike the longer version of a Parker Fly that is used on a seven string build I recall seeing. I liked that one too. :D Ugly color for that 8 string, IMO, but it looks like any other strat with too many strings. *shrugs*

.... and if you have a twisted neck, with ...oh- say- a slight twist forward on the bass side, and you apply back pressure to the bass side, but not the treble side, it WILL un-twist. Take a dual rod neck and turn only one rod. you can watch the neck 'twist'. :D

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^What's the first ugliest 8 string headstock you've ever seen? B)

I will keep that to myself as not to accidentally offend anyone... :D

Mounting a trussrod diagonally sounds a bit silly to me. I would have thought that would help to create a twist in the neck, which rather defeats the object of the excercise :D

Does seem counter productive. B)

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Where does it say diagonally?

Basically the neck profile is fatter near the lower strings and gradually tapers as it gets to the high E string. The Trussrod is also offset and runs through the thicker portion of the neck.
The truss rod is offset from centre, and presumably, runs parallel to centre.

Also Ibanez have used 1 truss rod since the RG2228 came out, so if its good enough for them.

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Where does it say diagonally?

Basically the neck profile is fatter near the lower strings and gradually tapers as it gets to the high E string. The Trussrod is also offset and runs through the thicker portion of the neck.
The truss rod is offset from centre, and presumably, runs parallel to centre.

Also Ibanez have used 1 truss rod since the RG2228 came out, so if its good enough for them.

I was going by what Huff said here:

Have you seen the new "first ever" Jackson 8 string which was presented at the NAMM show? :D

The guy placed the truss rod diagonally...

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