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What is a truss rod? And how does it work? A look inside the guitar neck.
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- Опубликовано: 7 июл 2017
- What are these things called truss rods? Why are they important and how do they work? This video should answer these questions for the most part. Without going into too much detail it explains and demonstrates the inner workings of the guitar neck.
If you already know what a truss rod is and just want to skip to the neck cutaway, go to 2:55.
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A short comment about this video: I know there are endless variations when it comes to guitar necks and truss rods, which I (deliberately) have not covered in this video. This video should however give a basic understanding of what a truss rod is and how it functions. Thanks for watching!
A picture paints a thousand words. Very informative. Now I am confident with this knowledge moving forward.
Thank you. I had zero idea that something like this existed in the neck
Only 279 Likes for such a high quality informational video makes me sad sometimes. I was searching for the same information. and Kudos. :)
Exactly what I was looking for. Nice visuals and demo. Thanks.
Very informative. I understood what a truss rod does ... but now I know how it does it. Building my first neck. Thank you!
heck yea, I was thinking about trying myself, let us know how it came out
Truss rods are SUCH an amazing invention, anyone who’s owned a classical guitar(which don’t have them) understands
But, how is the rod actually moving up and down when you are tightening or loosening it? What are the mechanics behind it?
Exactly, it's only half the story
Just in case someone did want to know. The truss rod is composed of two rods, one is just a straight metal solid rod, the other is a square rod that is welded to the truss rod on one end and on the other it's connected to the square rod with a tapped bolt and a bracket that connects the bolted to the cylindrical rod. The cylindrical rod is slightly longer than the square rod, and when the bolt is tightened the distance between the bracket and the square rod contract forcing a bow in the cylindrical and if the bolt is loosened enough it will bow in the opposite direction. I don't know the "sciency" lingo, I just figured it out on my own by looking at one.
@@ikannunaplays Exactly
but when the rod goes up, couldnt the fretboard rip off?
+Metal MGTOW The fretboard glue surface is very large. As long as that glue joint is perfect it won't ever come off. I've never seen it happen. I have seen a fretboard split in the middle (lengthwise) once or twice though, which can happen when the wood gets very dry or when the fretboard is too thin.
Perfectly explained
Thank you for posting this! It’s very helpful to see it exposed.
Thanks, very informative. I've played on a graphite neck pretty much my whole life until recently. I really wanted to understand what this device looks like and how it works. I really wish they made truss rods so that they could be easily removed amd replaced. I've read a lot of horror stories about them breaking.
I'm obsessed with your hands i'll be honest.
Outstanding vid. Excellent. Best I've seen. Thanks very much.
You're welcome.
Is it possible for a truss rod, in say a fender neck, to run out of adjustment? Even with washers installed? Mine wont turn anymore even with washers installed and having clamped it for about a week. Its playable, but I cant get that last little bit of adjustment. If you try to tighten it, it just feels kinda springy. I stopped because i dont want to break the rod.
Excellent video. Should you wait a day to put strings on to let the neck settle? Or string it at full tension right away and check the next day? Thanks!
It got the point across which is the important thing. But, it doesn't explain how the truss rod bends like that. It only shows the truss rod bending.
Excellent explanation on Truss Rods. Only one question: when there´s a slab fretboard involved, wouldn´t the truss rod detach the fretboard when adjusted?
No
It’s called a rod so I always thought it was cylindrical. Kinda surprised to see the shape. I still don’t understand how it moves though.
So does the truss rod only affect the fretboard? It looks like that's the case... but I always thought it was bending the whole neck...
I just adjusted my old Univox Hiflier guitar’s truss rod because it had way too much up bow and all I could do is set it neutral because beyond that, the nut started to get really loose.
Once it gets loose when trying to apply relief or down bow, does the truss rod keep working or will not work once it feels too loose?
do you know what my 73 fender telecaster deluxe has truss rod wise... the silver bullet nut at head stock is loose but the neck is not coming up outta being bent downwards im wondering if higher gauge strings is what it needs, not sure if there is a minimum gauge I think there is 8s on there now
Great video. So the opposition to the truss rod force that creates the neck movement is the back of the fret board? Seems like a good amount of pressure on the fret board. The truss rod uses the back of the fret board to “push” the neck straight?
Very helpful. Thanks!
very nice video🎉 perfect
@0:33 Wouldn't high action reduce the risk of having buzz?
Great demo. But what about the limits of the truss rod. Meaning how much can a truss rod be loosened to make it bow backwards. For example when we strung the standard tuning the neck always has a tendency to bow forward over time due to the excessive pulling tension developed by the strings. In that case when someone tried to loosen the truss rod (to counter the forward bow) again and again and again, how much can we expect the rod to loosen over time without reaching some final point ; Does this truss rod function like a screw in a given direction and reaches an end point or it can be loosened endlessly to cater to the situation described above? Pls help me I have brought a new acoustic guitar n its very dear to me. Thanks in advance.🙏
It certainly has an end point.
thank you very much for this informative content!
😎 cool, very helpful, thanks!
Very welcome!
Thank you. Great video.
Im getting fret buzz on the low strings, around the first 5 frets on my low E. what is best way to fix this? Im a n00b
+Eric Ottaviano Fret Buzz can have many causes. It's very hard to say what causes it on your guitar without seeing it. However, if it mostly buzzes on the low frets, it could mean that the nut slots are cut too deep. Try fretting the string on the second string. There should be a tiny gap between the top of the first fret and the bottom of the string. You can measure this gap with feeler gauges, but if you don't have those you can also use guitar picks of varying thicknesses. What do you find?
I ended up loosening the trust rod a little and messed with bridge level until I found a sweet spot and more of my kind of action. theres so many ways to go about it but I appreciate your help I'm sure ill have more questions
+Eric Ottaviano Good to hear you got it to where you like it. Let me know if you have any more questions.
If you have a adjustable truss rod, do you need to do setups to the guitar (refreting, etc) ? Or is just to adjust the truss rod?
All you show is that when you tighten the truss rod, the neck curves back, and when you loosen the truss rod, the neck curves forward. Where do you show how turning the end does either?
I'm sorry, I don't quite understand your question. Can you be more specific? I'll try to help you out. Best regards.
You didn't explain how tightening the truss rod causes the neck to curve. There were no details about how this works other than it does work.
responsibleparty As I mentioned in the video, the fingerboard would normally be glued on top, completely sealing in the truss rod. The truss rod channel is made to fit the truss rod perfectly. That means the truss rod does not have any space to bend the way it does in this video, unless the entire neck bends with it (which it does). I hope this answers your question.
It doesn't. But that's okay, I'm sure I could Google and find the information when I'm not busy with other matters. For me, it was just the observation that the one part of this that isn't obvious to me is the part that is brushed past in most of the videos I've seen about this.
Right, like, how does turning a screw make the truss rod bend at all? Like, physically, how does that work?
Thankyou!💕
Thank you!!
Hey,I have a Problem.I need a soltingplan for a John.Birch SCSL.Is it possible that I can got a plan or photos from the wires from backside.Thanks,for help,hopefully!!!!!
How do some guitars not have a truss rod? Would the neck break off? Just curious
If you use a strong and stable (preferably quarter sawn) neck wood it can easily withstand the tension of the strings. I have owned 80+ year old guitars without truss rods and those necks were perfectly straight. The issue I have with rod-less necks is the fact that there is no easy way of adjusting them. If there is a pronounced bow, you will have to put quite some work into that neck to get it straight. On a neck with a truss rod, this is an easy job that only takes a couple of minutes.
Good to know. Thanks
Awesome man, thanks!
Hello. I adjusted the truss rod and the neck is flat. After 2 days I noticed an up-bow. I adjusted it again. After 1 or 2 days the same occurred. I repeated this process many times and it seems the truss rod does not maintain the neck flat. The marked the truss rod nut to see if it was moving, but no, it did not move. It is a single action truss rod. Have you experienced that? Thank you in advance.
A single action truss rod only bends the neck 'backwards' (against the tension of the strings, eliminating a forward bow). It can not eliminate an backbow. So this problem likely has little to do with the truss rod. What I would recommend is to first remove the string and loose the truss rod to find out what the neck does without tension. Then slowly add string tension and find out if the backbow is still present. If the backbow is still there when the strings are fully tensioned there is a problem with your guitar neck. You can eliminate a backbow by levelling the frets (if it's not that bad) or by removing the frets, levelling the fingerboard and refretting. This is just the short version of course. There are always other problems (and solutions) that might be appropriate but for that it would be better to email me. Best of luck!
Ok, mark me as dummy but i do not get from looking at this video which side of the neck I am looking at. Top of bottom! With no machine head holes it could be a left handed neck for all I know. Please clarify!
Watch from 2:55
That's what a truss rod DOES. But how does it work? You didn't address what was in your title.
That's not clear how a 1/4 glued fretboard can work against a 7/8-1 of a maple neck. In my head it rather will unglue a fretboard than to curve a neck... I didn't get this.
With a single action truss rod is the guitar built with a perfectly flat neck (no bow at all)?
It depends. Some luthiers build some relief into the fretboard or frets, some build absolutely flat. I build all of my necks dead flat, unless it's a neck without a truss rod (I will then incorporate a small back bow).
@@LoneStarGuitars Thank you, I have been learning so much from your site. Will never make a guitar but knowing the hours and skill that go into it maybe improves my playing?
Nice to know, thx !
How does the actual mechanic work tho
You're right, I did not address that. I'll do a follow up in which I'll show the inside of the truss rod as well!
BUY WHY!?!? I NEED TO KNOW THE PHYSICS.
This should be what is a truss rod because it doesn't explain how
Great presentation but jesus, man. You're a paper cut away from severing an artery there....
Thanks. I'm not sure what you're referring to though. If you're worried about the rod snapping, it won't. I've actually did some tests with these specific rods and I did not succeed in snapping them by over tightening no matter how hard I tried!
Lone Star Guitars I think he’s talking about the vein in your hand
Ohh no
How to use a shit ton of words to turn a one minute video into a 5 minute video.
That's not it works per se, but half the story
Talk more do less is you