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Posted: Sun Aug 01, 2010 4:00 am
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I don't see how extra string length after the saddle could affect the amount of tension needed to achieve a note.

I'm not trying to be argumentative. I seriously just don't see how that could be true.


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Posted: Sun Aug 01, 2010 7:43 am
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Dub-T-123 wrote:
I don't see how extra string length after the saddle could affect the amount of tension needed to achieve a note.

I'm not trying to be argumentative. I seriously just don't see how that could be true.


Because we're not talking about shredder guitars here with locking nuts and bridges that take the extra length out of the equation. The whole string comes into play in this discussion. On normal guitars without those locking devices any time you bend a fretted note the extra tension you apply to the string by bending is distributed over the entire length of the string from tuning post to ball end. Variations in that overall length have an affect on the relationship between pitch change and finger pressure when bending.

Think of two ropes each tied to their own set of two steel post anchors, (4 anchors total) both ropes tightened to a tension of 100 pounds. The first rope is tied between anchors that are 6 inches apart. The second rope is tied between anchors 60 feet apart but both ropes are tensioned at 100 pounds. Now you stand in the middle of each rope and see how far you can push the rope sideways pushing with all your might. The 6 inch long "string" you will only push less than an inch or maybe even nothing at all but the 60 foot long "string" you will be able to push a yard or more.

This is because each unit of length of rope (let's use inches) will stretch an amount "X" when exposed to a sideways force of "Y". If Y is the same in both scenarios (all of your might) the longer rope will have 120 times more units of length so it will have 120 times more cumulative stretch. The example is extreme but it does demonstrate the concept.

(60 feet is 120 times longer than half a foot)

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Posted: Sun Aug 01, 2010 2:24 pm
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Ok now I got it.

Thanks and good explanation. I was leaving out the factor of the strings having give in the nut and saddle.


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Posted: Sun Aug 01, 2010 7:12 pm
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Nicely put. We do have a good, based-in-science explanation to handle the string-bending issues of top loader v. thru body.

Now to pull the zip top off of a vacuum sealed can of worms. I can't see any way to explain how there could be a difference in sound between a top loader and thru-body. Any part of the string vibration that is going to interface with the body ends right there at the bridge. The extra string length from the saddle to the back of the bridge or down through the body is just that - extra string length. It doesn't vibrate, it doesn't do anything except provide a connection. Sonically, I can't see how it would make a difference.

Now slightly off topic, I read where Eric Johnson would specify on his instruments that the bridge gets pulled and all the paint/finish is removed down to the bare wood. That does make sense scientifically in affecting tone.


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Posted: Mon Aug 02, 2010 5:28 am
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Listen to what Jim Campilongo has to say about his toploader Custom Shop Signature Tele:

http://www.jimcampilongo.com/about/signature_tele.php

The YouTube video is at the bottom of the page.

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