Dual Expanding Truss rods

[beelzelboss]

I'm about to pick up a bass with dual expanding truss rods. Can someone explain to me how these work, so I can set up my bass? I like to do it so I can get it exactly to how I want it.

Thanks

Craig

[T-Bird]

Hi.

Dual/double acting?

That's just a term for a truss rod that allows adjustment both ways, ie. to make the neck concave and convex.

You have to be extra careful if there's more than one truss rod of that kind as both has to be adjusted a bit at a time. Otherwise You have the TR's battling against eachother, and something will give. The FB or the back of the neck, wich-ever is the weakest.

Regards
Sam

[beelzelboss]

oh I should find out if there is more than one. Thanks for the help.

[dmusic148]

A more accurate description would be 'double-acting' truss rod, like T bird said. It work both ways. No big deal, but you must be extra careful to use the correct tool on those, because if you wreck the nut with the wrong size tool, it can't be replaced.