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Topic: Sho~Bud changer lowers, then raises - FIXED! |
b0b
From:
Cloverdale, CA, USA
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Posted 9 Mar 2019 3:04 pm |
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This is happening on a the 4th and 8th strings of a Sho~Bud Pro I. The E lowering lever almost makes it to D#, then it starts activating the raise part of the fingers. This keeps the strings from ever reaching the target D# pitch.
I've disconnected all of the raise rods on both strings, so I know it's not an interaction with the F lever or the C pedal. What's causing this? How can it be fixed?
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Last edited by b0b on 10 Mar 2019 1:12 pm; edited 1 time in total |
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Bob Carlucci
From:
Candor, New York, USA
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Posted 9 Mar 2019 3:52 pm
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b0b,,, If I had that guitar here, I would take out BOTH E lower pull rods, ,, No rods either raise or lower in there at all... that way you eliminate everything but the changer,lower return springs and strings.. Take the lower rods out, and press the lower portion of the changer fingers with a screwdriver. See if the problem remains. I have seen some changer fingers that were corroded, or really rough act like this.. I have also seen rods too tight in the changer finger holes cause this issue.bob
_________________
I'm over the hill and hittin'rocks on the way down!
no gear list for me.. you don't have the time...... |
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Georg SΓΈrtun
From:
Mandal, Agder, Norway
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Posted 9 Mar 2019 4:27 pm
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Lower-return-to-raise tendencies on all-pull PSGs, usually involves a too-tight lower return spring, and/or raise helper spring that lightens the raise too much too early. The lower return spring becomes the unwanted pivot-point.
Balancing out these springs until all lowers operate correctly, is usually all it takes for a PSG with the standard E9 raises/lowers. |
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Kevin Fix
From:
Michigan, USA
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Posted 9 Mar 2019 4:44 pm
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| b0b, I had a Bud with a similar problem years ago. What I found was the pull rod was hanging up in the changer hole where the rod goes through. What I did was remove the rod and took a small rat tail file and cleaned out the hole in the changer finger. Did the trick. My Super Pro D10 done it once also. I had 2 of the changer fingers walking into each other. I repaired the problem by flipping the pull spring loop over so that it would separate the fingers and I also moved a pull on a the relative bell crank so to pull the fingers away from each other. |
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Marc Jenkins
From:
Victoria, British Columbia, Canada
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Posted 9 Mar 2019 10:16 pm
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| IΓ’β¬β’ve had all the above issues on one guitar! |
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b0b
From:
Cloverdale, CA, USA
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Posted 10 Mar 2019 1:11 pm Fixed.
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It was the raise helper spring on the 8th string. Removed it (unnecessary) and that was fixed. Lubrication and filing the changer holes seems to have fixed the 4th string (it didn't have a helper spring).
Thanks for the help, guys! 
_________________
-πππ- (admin) - Robert P. Lee - Recordings - Breathe - D6th - Video |
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Bob Carlucci
From:
Candor, New York, USA
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Posted 10 Mar 2019 1:52 pm Re: Fixed.
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| b0b wrote: |
It was the raise helper spring on the 8th string. Removed it (unnecessary) and that was fixed. Lubrication and filing the changer holes seems to have fixed the 4th string (it didn't have a helper spring).
Thanks for the help, guys! |
Gotta watch those holes in the changer fingers,, If they are too tight they cause all sorts of problems,, Seen that a bunch of times, happened mostly on older steels.. these days the machine work is much more accurate... bob
_________________
I'm over the hill and hittin'rocks on the way down!
no gear list for me.. you don't have the time...... |
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Donny Hinson
From:
Glen Burnie, Md. U.S.A.
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Posted 10 Mar 2019 2:54 pm
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| Never could understand the idea of helper springs unless you're changing 5 or more strings with the same pedal or lever. I know they were a big idea on certain brands, but I always viewed them as just another thing to get out of whack and cause problems. |
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Ricky Davis
From:
Bertram, Texas USA
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Posted 10 Mar 2019 3:50 pm
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Sorry b0b; I was gone to gig most yesterday and then driving all day picking up my Daughter...but I would have suggested EXACTLY what you did...ah..ha....good job.
Ricky
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Ricky Davis
Email Ricky: sshawaiian2362@gmail.com |
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