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Replacement truss rods

Discussion in 'Bass Guitars' started by dave, Jul 8, 2014.

  1. dave

    dave

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    It seems to me a shame that Warwick do not sell a replacement aluminium truss rod for older Thumbs and Streamers. Installing the much heavier iron (steel) truss rod can cause a severe neck dive problem, making the instrument badly unbalanced. I cant see why Warwick are unable to offer the correct aluminium rod. Come on Warwick, there must be lots of people who need the correct part to replace a faulty aluminium truss rod that is the correct length and weight !
     
  2. HaveBlue

    HaveBlue

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    Agreed! I contacted customer support concerning this since the truss rod in my '91 Streamer is past its due date. I was informed that this alloy 2 way truss rod would also be a suitable replacement for the one way aluminum one. Don't know why it should cost so much more than the other 2 way rods though. I currently have a question regarding the pricing pending.
     
  3. dave

    dave

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    I'm not sure that the aluminium 2 way truss rod will actually fit, I may be wrong but I seem to remember someone saying on the forum that you cannot replace the old one way alloy rod with the 2 way........??
     
  4. schlobodan

    schlobodan Warwick Streamer Specialist Good Vibe Sponsor

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    2 way does not fit!

    different dimensions

    who gave you this info?
     
  5. HaveBlue

    HaveBlue

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    Schlobodan, please see below for the reply I got from the webshop representative.

     
  6. schlobodan

    schlobodan Warwick Streamer Specialist Good Vibe Sponsor

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    well the 2 way is neither new nor iron :)

    it has slightly larger dimensions below the nut and thus will most likely fit your bass

    i have both here an can measure but I have tried it some time ago
     
  7. dave

    dave

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    That's really poor advice from Warwick ! I'm sure that Warwick could get whoever machines up the truss rods that are available to make a batch of aluminium one way rods that are the correct length and weight. Come on Warwick !
     
  8. schlobodan

    schlobodan Warwick Streamer Specialist Good Vibe Sponsor

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    not fit ofc
     
  9. dave

    dave

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    phpThumb_generated_thumbnai.jpg

    The section around the barrel nut / adjuster is the bit that would not fit ..... not in my '89 Thumb anyway
     
  10. schlobodan

    schlobodan Warwick Streamer Specialist Good Vibe Sponsor

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    exactly
     
  11. schlobodan

    schlobodan Warwick Streamer Specialist Good Vibe Sponsor

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    there was a thread some years ago where somebody installed it with some wood work enlarging the space in the neck - but I would not
    do it if it can be avoided somehow
     
  12. thefitz

    thefitz

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    I replaced a fully-maxxed aluminum rod with an iron one and it's great.

    There's a contingency that aren't happy with aluminum rods but why that is isn't exactly clear. All I know is that mine was maxxed out but there was still too much relief. With the iron rod, I'm about 20% into the rotation and it's as straight as I need it.

    (I really don't 'get' the need for 2-way rods...)
     
  13. schlobodan

    schlobodan Warwick Streamer Specialist Good Vibe Sponsor

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    well if the neck has backbow you need to correct it.

    This happend to me on 3 basses only but then it is good to have it:)
     
  14. thefitz

    thefitz

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    Ah, I've never encountered that. That must have been one warped-ass neck if it still bowed back with a slack truss rod and string tension.
     
  15. schlobodan

    schlobodan Warwick Streamer Specialist Good Vibe Sponsor

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    not warped at all - simply back bowed as in expecting larger amount of tension from strings
     
  16. boston asphalt2

    boston asphalt2 Official Forum Pain in the Ass

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    Was this on the NT5 fret less?
     
  17. thefitz

    thefitz

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    Actually, yes and no. I replaced the truss rod on that bass, but it was the old 1-way steel one, so I replaced it with the 1-way iron one. They were roughly the same weight (may have even been the same rod) so there was no difference in balance. Same thing though - a little twist and it was perfect. In fact, I have to dial it back since it's the summer now.

    The aluminum rod came from a 1992 Streamer - I replaced it with an iron rod as well.
     
  18. HaveBlue

    HaveBlue

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    Did you notice any real life difference in balance after exchanging the aluminium rod with the iron one? The entire situation sounds very recognisable to me: aluminium one way rod in a '91 5-string Streamer St1 not delivering enough force to counter the forward bow at full counterclockwise lock.
     
  19. thefitz

    thefitz

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    The iron rod is probably six times heavier than the aluminum one, so yes, I would say that there was an impact in balance, and an impact in weight as well. Mine is a 16.5mm string-spacing Stage 1.

    The thing is, the rod obviously runs along the length of the neck, so it's not quite like exchanging light tuners for heavy ones. I don't know if I'm explaining this properly, but a new truss rod makes the whole neck heavier, not just the headstock.
     
  20. HaveBlue

    HaveBlue

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    Just thougt I'd report back here: operation finished! I replaced the aluminium rod with the iron one and all is well. The alloy one was maxed out and still left the neck with a forward bow. The iron one needed just a single twist to compensate and the neck is dead straight now. The iron one is heavier, sure, but fortunately not a factor 6 even though when holding it might give you the impression it is.

    Alloy:
    [​IMG]

    Ye olde iron rod:
    [​IMG]
     
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