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FDP Forum / Fender Custom Shop / G string "rattle"...fairly common?

moozak
Contributing Member
*

indian-nipple-less

-jr-
Dec 14th, 2003 12:37 PM   Edit   Profile  

just curious. all my strats (vintage style) seem to have a G string rattle when fretted between say the 7th and 15th frets on the G string. some strats are more pronounced than others. action is set to standard as well as neck bow.

so my questions are:

why does it seem to be more pronounced on some guitars than on others?

is it fairly common?

(This message was last edited by moozak at 12:38 PM, Dec 14th, 2003)

blackandblue
Contributing Member

USA/Oregon

Dec 14th, 2003 11:48 PM   Edit   Profile  

I think that malady is common enough to have a nickname: "Stratitis." I've seen descriptions of it elsewhere on the forum.

This is directly from Kinman's site (I've included the link, but this will save you a click):

(Strat-itis is simultaneous multiple discordant frequency syndrome). Dirty or rusty strings can also cause this but many players know this horrible phenomena is caused by excessively strong magnets in the pickups, here's how it works. What happens is the magnets of the pickups pull a section of the string (the part that's over the pickups) into a U shaped vibration path. Normally the strings vibrate in what is essentially a single-plane path or pattern. Lets say that the time taken for a string (not subjected to excessive magnet pull) to complete one cycle or oscillation is X milliseconds. Traveling in a U shaped path it actually takes longer to complete one cycle or oscillation since the distance is greater via a U shaped path, so the time is X + U milliseconds. Now it's getting clear that what you have is a string that has a section of it's length vibrating in a U shaped path and part of the remaining section traveling in a direct single-plane path and yet another section traveling at all frequencies between these two extremes. This means that the three sections are actually vibrating at many different frequencies when the string should be vibrating uniformly at a single frequency. What happens when you mix all these different frequencies together? Uggghhh, dissonant Stratitis that's what! It's bad enough hearing 2 non-harmonious notes coming from a single string, but when you get multiple dissonant frequencies (or notes) being produce simultaneously from a single string the results are absolutely horrendous. A string that's out of tune with itself no less, big time. That's what Strats do when you adjust the pickup magnets close to the strings. But when you adjust them to prevent Strat-itis, output, sensitivity and dynamic range are reduced.

Kinman Pups

moozak
Contributing Member
*

indian-nipple-less

-jr-
Dec 15th, 2003 05:33 AM   Edit   Profile  

well, it could be that. this is not really a harmonic frequency that i'm hearing... but more of a rattle against another fret... but it happens on all of them in varying degrees. i suppose the string shape during vibration could contribute to this. it does happen to be the G string, which has a tall magnet.

mconover

USA

Dec 27th, 2003 09:09 AM   Edit   Profile  

"Stratits" usually occurs on the low E and A springs and usually above the 12th fret. Like black and blue explained, it is an artifiact of pickup excessive magnetic attraction to the string (strong magnets)or pickup adjustment to close to the string. My CS Tele with a texas special middle strat pickup had a terrible case of this......I don't think what Mooozak is describing is Strat-itis, BTW all my Fenders rattle on the G string......I think its tension related (remember why your saddle is so far back on the G?)

mconover

USA

Dec 27th, 2003 09:10 AM   Edit   Profile  

"Stratits" usually occurs on the low E and A springs and usually above the 12th fret. Like black and blue explained, it is an artifiact of pickup excessive magnetic attraction to the string (strong magnets)or pickup adjustment to close to the string. My CS Tele with a texas special middle strat pickup had a terrible case of this......I don't think what Mooozak is describing is Strat-itis, BTW all my Fenders rattle on the G string......I think its tension related (remember why your saddle is so far back on the G?)

James78

USA

Dec 27th, 2003 12:22 PM   Edit   Profile  

I read somewhere that this is due to the height of the G-string polepiece, ie. the stagger on the pickup. It'd be interesting to hear if someone has the same problem with flat-staggered pickups.

moozak
Contributing Member
*

indian-nipple-less

-jr-
Dec 27th, 2003 05:02 PM   Edit   Profile  

mconover is right... it's not a harmonic frequency that i'm hearing.

anyway, it's not bad or anything... i love my strats... just an oddity that i would like to understand.

i agree... it could be related to the G magnet pole height... but i don't think it's the "strat-itis" definition.

blackandblue
Contributing Member

USA/Oregon

Dec 27th, 2003 06:39 PM   Edit   Profile  

Here is another link - about 1/2 way down the page, it talks about how we should be playing with wound G strings rather than unwound ones.

Problems with a Wound G

moozak
Contributing Member
*

indian-nipple-less

-jr-
Dec 28th, 2003 05:59 AM   Edit   Profile  

VERY GOOD article blackandblue! thanks!

this could be what i'm hearing!

tweedpro

Chicago

Only the poor craftsman blames his tools
Jan 5th, 2004 09:32 AM   Edit   Profile  

That's part of the Strat sound, sorta like Les Pauls are always out of tune. Hey I like being on the Fender site where I can say that Gibsons are always out of tune. I'm not joking they are. Short scale length=out of tune.

FDP Forum / Fender Custom Shop / G string "rattle"...fairly common?




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