Repair Options on a USA Cirrus Truss Rod Nut?

[jasper383]

I just received a US Cirrus bass that is in great condition, but for one thing: the truss rod nut is almost completely rounded off. I can't get a bite on it at all.

What are my options? I believe the truss rod and nut on US Cirrus basses is one piece, so backing the nut out and replacing it aren't an option.

[sloasdaylight]

Originally Posted by jasper383

I just received a US Cirrus bass that is in great condition, but for one thing: the truss rod nut is almost completely rounded off. I can't get a bite on it at all.

What are my options? I believe the truss rod and nut on US Cirrus basses is one piece, so backing the nut out and replacing it aren't an option.

Your best bet is most likely taking it to a luthier in town (local GC/Sam Ash should have one on their staff) and have them look at it.

[GeoffByrne]

I had this problem.

Bored a narrow pilot hole (2mm) through the nut. Got a 1/2" steel Phillips headed self-threading screw, put in a dab of permanent Locktite & screwed in the screw(!), left to set.

This allowed me to tighten the rod to a pretty perfect (*almost* flat) action. Haven't needed to loosen it yet.

[Cutty]

Originally Posted by GeoffByrne

I had this problem.

Bored a narrow pilot hole (2mm) through the nut. Got a 1/2" steel Phillips headed self-threading screw, put in a dab of permanent Locktite & screwed in the screw(!), left to set.

This allowed me to tighten the rod to a pretty perfect (*almost* flat) action. Haven't needed to loosen it yet.

I think he means the adjusting nut is rounded so he can't turn it Geoff,or am i missing something here?

[dmusic148]

Originally Posted by Cutty

I think he means the adjusting nut is rounded so he can't turn it Geoff,or am i missing something here?

It's not a nut in the traditional sense. It's actually an Allen socket (female) headed bolt. And it is not removable without removing the fingerboard- the whole rod must be replaced. Geoff's solution is feasible.
I'd go one further and try and drill/tap machine screw threads inside the stripped out head, and Loctite a matching screw into it.

[jasper383]

Originally Posted by dmusic148

It's not a nut in the traditional sense. It's actually an Allen socket (female) headed bolt. And it is not removable without removing the fingerboard- the whole rod must be replaced. Geoff's solution is feasible.
I'd go one further and try and drill/tap machine screw threads inside the stripped out head, and Loctite a matching screw into it.

Yes, it's an allen socket that an allen wrench would go right in.

I thought about filling the rounded off hole with something, then dremeling a slot right into the top?

I like the idea of drilling a machine screw into the head. I will take this to my luthier this week.

[jasper383]

Does Peavey themselves take in basses to fix? Could I send it to them at reasonable cost to repair?

I once sent a Stingray back to EBMM, and they fixed it cheaper, with shipping, then having it repaired locally would have. But, I understand EBMM service is among the best there is.

[dmusic148]

This bass is a bolt-on, right? If so, it may be possible to remove a bit of wood at the heel, and slide the whole rod right outta there. Install new rod, patch hole, done. I'm curios to hear what your luthier says.
The rod in your bass most likely looks like this:

[mech]

Try using a #2 phillips head screwdriver to remove the nut. Use firm pressure. I'm sure a replacement nut would be available from Peavey. If not it would be easier to cut a slot in the nut for a flat blade screwdriver

[dmusic148]

Originally Posted by mech

Try using a #2 phillips head screwdriver to remove the nut.

The nut is not removable.

[GeoffByrne]

Not a bolt-on neck either....

[cb56]

Originally Posted by jasper383

Does Peavey themselves take in basses to fix? Could I send it to them at reasonable cost to repair?......

Call Peavey. Chances are you'll end up talking with Steve. He's a good guy and very helpful.
1-877-732-8391 extension 1418