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RocketRalf

Well-known member
Joined
Dec 10, 2007
Messages
1,119
Location
Sydney
I need a 26th fret :eek: ...so I can tune to C and still play like I had a 22 fret guitar in E standard :rolleyes:
 

TNT

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Joined
Aug 18, 2005
Messages
3,576
Location
Oakland - Raider Nation!
I personally prefer 22 frets!!

As far as adding the extra 2 frets (keeping the scale length the same) yes, it changes the tonal characteristics of the guitar!!

In order to accommodate the 2 extra frets, if you keep the body the same size, you need to drive the neck further into the guitar body.

So, if you "move" the "neck" pickup to do this, you change the harmonics of the neck pickup, as well as have shortened the distance between bridge and neck pickup (harmonics again).

Just compare the two guitars (22 vs 24) you'll see where the measurements changed somewhere.:)
 

luke2joey

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Joined
Jan 13, 2009
Messages
61
Location
The Netherlands
Fantastic work NorM!

Your name suites you very well! I do notice a difference when changing from my Silo (24/Floyd Rose) to the Luke.
When I am playing my Luke I sometimes play a wrong note: The distance between the body and my hand is quite different. I have to adjust my mind to it.
I don't know the difference in tone, especially from the neck pickup, because the Luke has a complete different setup (as you all know..)
Very interesting thread. I am going to A-B my Silo to a '22 Silo' in the near future, just curious about the difference in tone from the two single coils (neck and middle).
I like my Silo like it is, that's for sure.
 

GWDavis28

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Joined
Jun 23, 2003
Messages
12,701
Location
Mass
I love math
I also like 24 frets cause it makes the math easier for me.

Rob says he doesn't get math so we'll start there.
An open A string (when in tune) vibrates 110 times a second. That's it's frequency (Hz). When you cut the string length in half (fret at the 12th fret) given the same string tension and thickness the string is forced to vibrate twice as fast or 220 Hz. If you cut the string length in half again (fret at the 24th fret) the same thing happens again and you get A 440Hz. (This is where intonation becomes important but not now)

And now some stinking math:
Given A 110Hz and A 220Hz We can find all the frequencies for the other notes:
freq (A#) = Freq (A) * 2^(1/12)
116.54 = 110 * 2^(1/12)

You can check this with the chart below or your calculator
For fun
freq (unknown note) = freq (known note) * 2^(x/12)
x = distance between notes in half steps

And it's almost the same thing for string length. (From the fret to the bridge) We know open A (110 Hz) length is 25.5"
(For metric people just multiply all lengths by 2.54 to convert to cm.)
BTW We're going metric every inch of the way!:) i digress
StrLn (A#) = StrLn (A) / 2^(1/12)
24.07 = 25.5 / 2^(1/12)

Then you find the distance between frets by subtracting the differences between string lengths for adjacent notes
Fret 1 = StrLn (A) - StrLn (A#)
1.43 = 25.50 - 24.07

Fret__Note______Hz______String Length____Fret Length
0______A______110.00_____25.50
1______A#____116.54_____24.07___________1.43
2______B______123.47_____22.72___________1.35
3______C______130.81_____21.44___________1.28
4______C#____138.59_____20.24___________1.20
5______D______146.83_____19.10___________1.14
6______D#____155.56_____18.03___________1.07
7______E______164.81_____17.02___________1.01
8______F______174.61_____16.06___________0.96
9______F#_____185.00_____15.16___________0.90
10____G_______196.00_____14.31___________0.85
11____G#______207.65_____13.51___________0.80
12____A_______220.00_____12.75___________0.76
13____A#_____233.08_____12.03___________0.72
14____B_______246.94_____11.36___________0.68
15____C_______261.63_____10.72___________0.64
16____C#______277.18_____10.12___________0.60
17____D_______293.66_____9.55___________0.57
18____D#_____311.13_____9.02___________0.54
19____E_______329.63_____8.51___________0.51
20____F_______349.23_____8.03___________0.48
21____F#_____369.99_____7.58___________0.45
22____G______392.00_____7.16___________0.43
23____G#____415.30_____6.75___________0.40
24____A_______440.00_____6.38___________0.38


Like ShaneV said you can keep adding frets but they do get pretty small after a while

I didn't get my calipers out to check this but I wish someone would

NORM, EXCELLENT!!!!

Glenn |B)
 
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