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garry willis aluminium spacer ball end trick?

#2
As far as I can see,extending a string past the bridge will not make the string tighter. The same string over,the same scale length,tuned to the same pitch,will have the same tension,no matter what is going on past the bridge saddles. I have yet to see any valid proof that anything like that actually works.If you want a tighter string over the same scale length,use heavier strings.
 
#4
This has been discussed on this board several times.

The string is stopped at the nut and bridge. It length of the string does not affect tension. The string could be four hundred feet long but it's speaking length will always be equal to the scale length of the instrument. When the string is brought to pitch the tension will be the same as a string of any other length. Diameter, composition, and pitch determine tension. Length is not part of the equation.
 
#5
Yes this has been discussed many times. It cannot change the tension, but it *could* change the flexibility, and therefore the "perceived" tension.

http://www.liutaiomottola.com/formulae/tension.htm

how to calculate tension:
image002.gif


T = tension in pounds;

UW = unit weight of the string, in pounds per linear inch;

L = vibrating length of the string (for an open string, this would be the scale length-nut to bridge) in inches;

F = frequency of the note to which you will tune the string, in Hz;


1. Everything else being the same, pitch increases as tension increases;

2. Everything else being the same, tension increases as scale length increases(this is nut to bridge);

3. Everything else being the same, tension increases as unit weight increases, thus a heavier gage string will be under greater tension;


http://www.liutaiomottola.com/myth/perception.htm
By moving the end points of the string (but leaving the string length the same), I think you may change the "feel" of the string-the perception of tension, but not the tension (see above "perception" article) and you may change the break over angle, but that's about it. The string may feel different because it has more room to "move" side to side. To change the tension, but leave string gage, and nut to bridge length the same changes the pitch.


(this info is from www.liutaiomottola.com and is copyright © 2004, 2005, 2006, 2007 by R.M. Mottola, who apparently is a genius)
 
#6
Wow! That is the real stuff!

Halliday and Resnick meet the Willis Myth.

In all seriousness, your post now has a permanent home on this hard drive.

Thank you.
 
#7
202dy said:
Wow! That is the real stuff!

Halliday and Resnick meet the Willis Myth.

In all seriousness, your post now has a permanent home on this hard drive.

Thank you.
Click to expand...

Halliday and Resnick, didn't they play bass and keys for The Band?

:D

Thanks!


I think I've posted that exact thing about 5 times here on TB, and it hasn't sunk in yet. Every week someone starts a thread about the PC board spacer Willis thing, or the headstock with reversed E and B string tuners (no offence meant to the OP). I'm glad you're interested in the physics of the whole string tension thing.

;)
 
#12
Note the Extended low B response, headstock , an ingenious idea designed to stretch out and tighten the LOw B response.
Does it work ? I can tell you that the B IS string and focused - as a result of the headstock ? Not string.
Click to expand...

It seems to me that Dan is deliberately choosing not to take sides in what might be a bit controversial.

Personally I'd say that if this wasn't BS, everyone would be doing it.
 
#14
This topic has been flogged previously. The physics are indisputable. Length past the bridge makes no difference in tension. Gary Willis is a very sharp technical person. And that is why I was mystified that he would make the statement about the spacer. It just didn't make ANY sense. I did however go back and look at the page in his book that illustrates the spacer. It works for him because his B sting is TAPERED. The spacer effectively reduces the length of tapered core from 1/2" in front of the saddle to almost zero making the string less floppy. Increasing the length of a normal string CHANGES NOTHING regarding stiffness or tension.
 
#16
ddnidd1 said:
This topic has been flogged previously. The physics are indisputable. Length past the bridge makes no difference in tension. Gary Willis is a very sharp technical person. And that is why I was mystified that he would make the statement about the spacer. It just didn't make ANY sense. I did however go back and look at the page in his book that illustrates the spacer. It works for him because his B sting is TAPERED. The spacer effectively reduces the length of tapered core from 1/2" in front of the saddle to almost zero making the string less floppy. Increasing the length of a normal string CHANGES NOTHING regarding stiffness or tension.
Click to expand...
Ahhhh, now I see. I had always wondered why he would make such a statement myself. I never considered the tapering.
 
#17
my question was not if the spacer trick works or not. all i asked was what it was about (how it's applied, what materials are used, pics if any). no need to get your panties in a twist over the physics of it all. geez..

seriously, i respect all you tb'ers and all, but sometimes some ppl are just too smart for their own good, no offence.

thanks gre107 and ddnidd1, for your replies.
 
#18
u-djinn said:
my question was not if the spacer trick works or not. all i asked was what it was about (how it's applied, what materials are used, pics if any). no need to get your panties in a twist over the physics of it all. geez..

seriously, i respect all you tb'ers and all, but sometimes some ppl are just too smart for their own good, no offence.

thanks gre107 and ddnidd1, for your replies.
Click to expand...

I really hate to burst your bubble, but if you'll notice, you posted your question in a DISCUSSION forum. Not a question and answer forum.

If you can't see the value of discussion on the forum, just read 202s response to the formula that describes what is going on with the GW idea. He obviously is quite expert at his trade, yet he carried something that he considers valuable away from the DISCUSSION
 
#19
u-djinn said:
my question was not if the spacer trick works or not. all i asked was what it was about (how it's applied, what materials are used, pics if any). no need to get your panties in a twist over the physics of it all. geez..

seriously, i respect all you tb'ers and all, but sometimes some ppl are just too smart for their own good, no offence.

thanks gre107 and ddnidd1, for your replies.
Click to expand...

Seriously, if you post a question in a public forum like this, why would you expect that the topic of whether it works or not would NOT come up?

Suppose you had asked something like this: "Can anybody tell me how that setup works where you use pyramid energy to keep your razors blades sharp?" Would you really expect everybody to completely avoid the question of whether this actually worked or not? Really?

Second, pkr2 is right. This is a public discussion forum. You can't reasonably expect to control the terms of the discussion, as long as people are acting within the forum's rules. As they were.
 

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