Quote:
Originally Posted by L20A
Good question.
Many newer built guitars now have a double action truss rod.
I have no idea how they work.
Someone please explain this for me.
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Turning in the clockwise direction tightens the nut on the truss rod and puts a bow in the neck.
Turning in the anti clockwise direction loosens the nut on the truss rod (and will have felt resistance, as with tightening) and puts a back bow in the neck. Whereas, with a traditional truss rod, this action allows the neck to back bow a bit, but turning the bolt will not apply more back bow than the neck will allow on its own.
With a two way truss rod, there is a spot in the middle where turning the bolt feels futile. Eventually the threads will take up the slack. And if not, then the nut will fall off because your guitar has a one way truss rod.