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Compensation and String Length (Read 1397 times)
Matt Blacka
Junior Uke
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MAKAIO Ukuleles Australia

Posts: 83
Sydney, Australia
Gender: male
Compensation and String Length
May 12th, 2009 at 5:49pm
 
Ok, I know there has been plenty of discussion throughout various topics regarding compensation of the bridge/saddle to get correct intonation. Bill, I hope this will help you out.

It would be good if everyone could share their experiences regarding this issue, all in one place. I'm talking both high and low g tunings, soprano, concert, tenor, and baritone. In the past, I have made a summary of what I consider reliable observations that other people have documented. I have used this as a guideline, and recently I have also made a jig and done some testing myself.

Data set 1: (from http://www.ukuleles.com/Technology/compensate.html):

Soprano for correct intonation with savarez alliance strings
A string     171.5 mm for nut to 12th fret, 173.5 mm from 12 fret to saddle peak
E string     171.5 mm for nut to 12th fret, 174.2 mm from 12 fret to saddle peak
C string     171.5 mm for nut to 12th fret, 177.8 mm from 12 fret to saddle peak
G string     171.5 mm for nut to 12th fret, 174.2 mm from 12 fret to saddle peak

Concert for correct intonation with savarez alliance strings
A string     187.7 mm for nut to 12th fret, 189.7 mm from 12 fret to saddle peak
E string     187.7 mm for nut to 12th fret, 189.5 mm from 12 fret to saddle peak
C string     187.7 mm for nut to 12th fret, 192.5 mm from 12 fret to saddle peak
G string     187.7 mm for nut to 12th fret, 189.7 mm from 12 fret to saddle peak

Tenor for correct intonation with savarez alliance strings
A string     215.9 mm for nut to 12th fret, 216.7 mm from 12 fret to saddle peak
E string     215.9 mm for nut to 12th fret, 217.9 mm from 12 fret to saddle peak
C string     215.9 mm for nut to 12th fret, 220.0 mm from 12 fret to saddle peak
G string     215.9 mm for nut to 12th fret, 217.2 mm from 12 fret to saddle peak

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MAKAIO Ukuleles, Australia www.makaioukuleles.blogspot.com
 
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Matt Blacka
Junior Uke
**
Offline


MAKAIO Ukuleles Australia

Posts: 83
Sydney, Australia
Gender: male
Re: Compensation and String Length
Reply #1 - May 12th, 2009 at 6:12pm
 
Data set 2: (Mike Chock recommendations from a previous post (I think I have interpreted correctly))
Tenor scale for low G tuning:
A string 434.2 mm (nut face to saddle peak)
Low G string 437.4 mm (nut face to saddle peak)
this giveas a slanting saddle.

My own measurements:

Tenor with Hilo strings (high G tuning):
all strings (G,C,E,A) have length 433.75 mm (nut face to saddle peak) and all have good intonation

Tenor with Aquila strings for reasonable compensation:
A string: 434 mm (nut face to saddle peak)
E string: 434 mm (nut face to saddle peak)
C string: 434 mm (nut face to saddle peak)
high G string: 433.75 mm (nut face to saddle peak)
low G string: 434 mm (nut face to saddle peak)

My measurements suggest that a slanting saddle slot is not required for aquila strings and low g tuning. I know there are other people who have found the same thing, so it would be good if they could write up there results here as well.

Matt
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MAKAIO Ukuleles, Australia www.makaioukuleles.blogspot.com
 
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