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Post subject: 77 P Bass truss rod
Posted: Fri Feb 15, 2013 11:39 am
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Hello all, I am brand new to the forum. Thanks for having me. I have a 77 P Bass that is out of commission. I've taken to 2 different repair guys to address what I assume is a truss rod issue. Basically, they are telling me that the cavity the truss rod is in has been wallowed out and the neck cannot be adjusted to get the right action. Is this something that can be corrected? I've since purchased a new American Standard, but really miss my baby. I've considered purchasing a new neck, but would really like top keep the perfectly worn in one that I have. Any suggestions would be appreciated.


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Post subject: Re: 77 P Bass truss rod
Posted: Fri Feb 15, 2013 12:13 pm
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Maybe try some lighter tension/light gauge strings. I think there is a product that can be fitted on to the truss rod itself to keep down the vibration and rattle. I don't know if it would solve the adjustment problem...


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Post subject: Re: 77 P Bass truss rod
Posted: Fri Feb 15, 2013 3:06 pm
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The truss rod cavity has been Wallowed Out"???

I don't know what that means but i do know truss rods.
First, if this is just a case where the rod has maxed out. Remove the rod nut and slip two small washers under the nut and over the rod.
You may have to take off the neck to do this. reinstall the rod nut and you may be able to get the nut to adjust the rod again.
I hope that's it, because the alternative is more expensive .
If the rod has come unscrewed from its anchor bolt, then that's a much harder issue to fix, bu tit is still fixable.

Is the neck a rosewood fingerboard or maple fingerboard?


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Post subject: Re: 77 P Bass truss rod
Posted: Fri Feb 15, 2013 5:43 pm
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I would say "hogged" or "gowged" out--- that would mean the hole is bigger than it should be due to someone messing it up? Right? Maybe?


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Post subject: Re: 77 P Bass truss rod
Posted: Sat Feb 16, 2013 3:43 pm
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Split_Pickup wrote:
The truss rod cavity has been Wallowed Out"???

I don't know what that means but i do know truss rods.
First, if this is just a case where the rod has maxed out. Remove the rod nut and slip two small washers under the nut and over the rod.
You may have to take off the neck to do this. reinstall the rod nut and you may be able to get the nut to adjust the rod again.
I hope that's it, because the alternative is more expensive .
If the rod has come unscrewed from its anchor bolt, then that's a much harder issue to fix, bu tit is still fixable.

Is the neck a rosewood fingerboard or maple fingerboard?



It's a maple fret board. What happens when I've had "professional" help is it will start out with my desired action and over a short period of time, the action closest to the body gets really high (is that referred to as relief?) like the neck is moving forward and I can hold the body and pull it back by hand.


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Post subject: Re: 77 P Bass truss rod
Posted: Sat Feb 16, 2013 5:00 pm
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I had a Rickenbacker 4001 that had the same problem, sounds like. I was told it was due to dry climate shrinking the wood up, forcing it to bow forward. The two problems you have combined...I think I'd just get a new neck.


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Post subject: Re: 77 P Bass truss rod
Posted: Fri Feb 22, 2013 3:18 pm
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Split_Pickup wrote:
The truss rod cavity has been Wallowed Out"???

I don't know what that means but i do know truss rods.
First, if this is just a case where the rod has maxed out. Remove the rod nut and slip two small washers under the nut and over the rod.
You may have to take off the neck to do this. reinstall the rod nut and you may be able to get the nut to adjust the rod again.
I hope that's it, because the alternative is more expensive .
If the rod has come unscrewed from its anchor bolt, then that's a much harder issue to fix, bu tit is still fixable.

Is the neck a rosewood fingerboard or maple fingerboard?


Dude, I could kiss you!!! That completely worked and (for now at least) it is as good as it has ever been with at least a full turn to spare! I can't thank you enough!! You are my new hero!!!


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Post subject: Re: 77 P Bass truss rod
Posted: Mon Mar 18, 2013 10:49 am
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I am glad that my suggestion worked and fixed your P-bass neck.

I have done the same thing on my old Jazz Bass and it worked like a charm.

Putting washers under a truss rod nut is called a rod shim and it works on necks that have been maxed out.

I am glad it worked on yours.

Now- Play that Precision bass! The world always needs more bass and more bass players.


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