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One way truss rod, warped neck

Discussion in 'Hardware, Setup & Repair [BG]' started by Lukasonbass, Dec 13, 2019.


  1. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    1028DC47-29A7-4471-BB3D-C079265214D5.jpeg B7D7A4CE-A4BE-4682-96CE-564544D93053.jpeg 0B41DACF-6A9E-425B-A633-0ABF12C4DF6F.jpeg 7AFA3ED1-8D13-4DB8-867E-7D8167B52C97.jpeg 7AA57747-69DC-4EDF-9D87-E650AA985441.jpeg I purchased a 1998 Modulus Genesis 5 on Reverb. Long story short, the neck was warped (B string was unplayable), the neck was milky probably from exposure to humidity for a prolonged period of time,
    and that the truss rod was maxed out.. (not a two-way)

    I had the neck planed and did a fret dress, adding stainless steel frets. The bass plays amazing now. The neck is as straight as it can be, action is as low as possible (which is quite good)

    It’s an amazing bass with an audere preamp and Nordstrand big splits. Tone is the best I’ve ever heard and its pretty much everything I want in a 5 string.

    I am definitely paranoid of having issues pop-up in the future.. The neck does have a graphite spine and I never expose it to drastic temperature changes, I do gig with it but I baby it for sure.

    My question is will this repair hold up for bit? Or is this just a temporary fix and I’ll need to redo everything again because I can’t adjust the truss rod?

    Any insight, opinions, or information would be greatly appreciated.

    thanks in advance,

    Lukas
     
  2. Turnaround

    Turnaround Commercial User

    May 6, 2004
    Toronto Canada
    Independent Instrument Technician, and Contractor to Club Bass and Guitar - Toronto
    Why can't you adjust the truss rod?
     
  3. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    the truss rod is one-way and is currently in its tightest position
     
  4. Turnaround

    Turnaround Commercial User

    May 6, 2004
    Toronto Canada
    Independent Instrument Technician, and Contractor to Club Bass and Guitar - Toronto
    So you mean the fretboard was planed with the truss rod at full tension?
     
  5. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    this is correct
     
  6. Turnaround

    Turnaround Commercial User

    May 6, 2004
    Toronto Canada
    Independent Instrument Technician, and Contractor to Club Bass and Guitar - Toronto
    I hope whomever planed your fretboard had a good reason for doing so with the truss maxed. Typically you would deal with truing the board with the truss rod slacked. Then there would be adjustment room available with the strings at tension. Just trying to understand why it was done that way.
     
    quickfix likes this.
  7. RSBBass

    RSBBass

    Jun 11, 2011
    NYC
    If you paid for it, take it back and have them redo it. Or better yet, get a refund and take it to someone who knows what they are doing.
     
    JLS and quickfix like this.
  8. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    I should specify that the truss rod isn’t super tight but that it has no where to go. If that makes sense?

    the neck was warped bad enough that the low B string was literally muted because it was touching the frets no matter how I adjusted string height.

    there is no way to access the truss rod in a way that would allow adding a washer or anything like that
     
  9. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    I’m sure I’m not explaining something correctly. The gentleman that did the repair for me has been in the business for decades and is highly regarded as the best in the area. He has a lot of respectable musicians as clients and works on tons of boutique, high end, and rare instruments
     
  10. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    I just went though some emails between me and the luthier. The neck had a back now. He was able to do a nut shim, The fingerboard was planned, and neck relief is now perfect under string tension.

    does that help at all?
     
  11. Turnaround

    Turnaround Commercial User

    May 6, 2004
    Toronto Canada
    Independent Instrument Technician, and Contractor to Club Bass and Guitar - Toronto
    No this makes no sense. If the neck had a back bow, the truss rod was too tight. So why was the truss rod maxed? And if the fretboard was planed it would reduce its thickness which means the nut would need to be cut lower, not shimmed. If the neck is perfect under string tension is the truss rod still maxed?
     
  12. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    Unfortunately, the person who sold me the bass neglected to tell me that the truss rod was maxed out...

    There is no reason for it to be that way I’m assuming at some point someone didn’t understand how to use it or maybe didn’t know that it would function in one direction.

    I haven’t personally touched the truss rod since the repair but I am assuming that it is still maxed out
     
  13. Turnaround

    Turnaround Commercial User

    May 6, 2004
    Toronto Canada
    Independent Instrument Technician, and Contractor to Club Bass and Guitar - Toronto
    It's worth finding out. As soon as it needs adjustment again, which it will, it would be nice to know that you're not screwed. And even if it's reached the end of the threads you might well be able to add a washer and give the rod full functionality again.
     
    RSBBass likes this.
  14. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    Alright. Let me find out!
    Thank you
     
  15. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    So I haven’t heard from the luthier yet but I believe I’ve misspoken. The truss may not be maxed out, it’s not tight but it’s doesn’t seem to add tension when it’s turned. I’ll respond again once the luthier emails me back
     
  16. Paulabass

    Paulabass

    Sep 18, 2017
    Huh? You somehow maxed the truss rod to correct back bow???????????
     
  17. Lukasonbass

    Lukasonbass

    Dec 12, 2019

    Hey Paulabass,

    No, when I purchased this bass it appeared to be in excellent shape. However when I brought it in for a tune-up we discovered the truss rod was non-functional. I thought it was maxed out but the truss still spins it just doesn’t add any tension.

    the backbow was corrected with planning the fretboard, stainless steel fret-dress, and a nut shim.

    does that make sense?
     
  18. Turnaround

    Turnaround Commercial User

    May 6, 2004
    Toronto Canada
    Independent Instrument Technician, and Contractor to Club Bass and Guitar - Toronto
    You need to ensure that you have a functioning truss rod. If it is indeed non-functional, no end of planing, shimming, or fret dressing will be of value. You need a working truss rod. Your car has a flat tire. No amount of suspension adjustment, engine tweaking or painting is going to make it road worthy.
     
  19. Lukasonbass

    Lukasonbass

    Dec 12, 2019
    Good news, despite purchasing this bass over a year ago the original owner purchased it back.

    thanks for all the input
     
  20. Zooberwerx

    Zooberwerx Gold Supporting Member

    Dec 21, 2002
    Virginia Beach, VA
    Good thing 'cuz I was getting really confused. For the record, the Genesis has a dual-acting truss rod...it's addressed in the manual attached below.
     

    Attached Files:

  21. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

     
    Mar 3, 2021

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