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Author
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Topic: tuning rack and barrell
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Jim Whitaker
Member From: Hamilton, Ohio, USA
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posted 17 December 2003 03:06 PM
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I just bought an old crossover & the pedals aren't in tune. when I turn the tuners the whole rod turns. How do these things work???? |
Bob Tuttle
Member From: San Angelo, Tx, USA
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posted 17 December 2003 03:16 PM
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The pedal that you are tuning must be depressed when you turn the rod. If the barrel turns with the rod you'll have to loosen the set screw on the brass barrel and
move it closer to the bellcrank so it will be up against the bellcrank when the pedal is mashed. I don't know if I explained that very well but maybe you can figure out what I mean. Hope it helps.Bob |
Jim Whitaker
Member From: Hamilton, Ohio, USA
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posted 17 December 2003 03:19 PM
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thanks bob are the barrels suppose to move within themselves against the springs!!------------------
JIM
"Zum SD10 3/6 ""Carter SD10" "74" LTD & Session LTD, Profex II "55" Esquire, "63 Epiphone, "63" Precision,
"71" Jazz
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Bob Tuttle
Member From: San Angelo, Tx, USA
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posted 17 December 2003 03:32 PM
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Yes. The screw-in part makes the barrel longer or shorter, which moves the changer finger more or less in order to tune the pedal. The spring keeps it from turning by itself while you're playing. The little end sticking out on the spring hangs against the bell crank so that part won't turn with the barrel. If you can't get your pedal up to pitch (or down if you're lowering) and the barrel tuner is up solid against the bellcrank, you might have to adjust your pedal stop to increase your pedal travel. |
Jim Whitaker
Member From: Hamilton, Ohio, USA
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posted 17 December 2003 03:55 PM
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Where is the bell crank I thought I knew what they were!!! Ok so you are telling be that really I can take these barrels apart by unscrewing them or do the just fit together?? If so mine must be rusted together because the don't want to move?? (this post was edited because of stupidity)
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JIM
"Zum SD10 3/6 ""Carter SD10" "74" LTD & Session LTD, Profex II "55" Esquire, "63 Epiphone, "63" Precision,
"71" Jazz
[This message was edited by Jim Whitaker on 17 December 2003 at 03:59 PM.] [This message was edited by Jim Whitaker on 17 December 2003 at 04:00 PM.]
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Bob Tuttle
Member From: San Angelo, Tx, USA
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posted 17 December 2003 04:04 PM
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Your guitar has the racks on it doesn't it? Disregard the part about bellcranks. The barrel tuners are moved by the racks. If the barrels don't screw in and out freely, you probably need to remove them, take them apart and clean and oil them so they will turn freely when you turn the tuners. Screw them in about half way, replace them on the rods up against the rack and tighten the set screw. This will give you some room to go either way when you start tuning your pedal. |
Jim Whitaker
Member From: Hamilton, Ohio, USA
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posted 17 December 2003 04:09 PM
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Thanks bob Very very much.JIm |
Bob Metzger
Member From: Waltham (Boston), MA, USA
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posted 17 December 2003 04:59 PM
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Do take the barrels apart and clean them but be careful how much lubrication you apply to them once cleaned or you'll spend your whole life tuning. My experience has been a very small amount of lubrication will allow the barrels to move/tune when they are engaged with their corresponding rack and still allow the barrel to keep its position/tuning otherwise. In other words, not to drift. If they are gummed up and not moving freely now, you have to take them apart and do a through cleaning. Be sure that the spring has a long enough part extending out the end of the barrel to catch on the rack so you will be able to tune them. Start by dealing with ones that only have one barrel per string and work up to the harder stuff once you get a feel for it.Bob M. |
Tim Bridges
Member From: Hoover, Alabama, USA
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posted 19 December 2003 09:26 AM
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I have a ShoBud Professional with rack and barrel undercarriage. Soon to become a "Duane and Jeff" setup (which is more than quite impressive). Adjust your barrels to the mid point by hand after loosening the set screws. While slightly holding the rod (to prevent it from easing out the back end) move the barrel back up against the rack and tighten the set screw. Now you should be ready to tune. Tune open strings first. Slowly depress pedal or KL (to avoid popping a string). You'll know which way to adjust. I won't get into the cents meter vs. a chromatic tuner debate, but, I tune with a chromatic tuner and then temper that tuning using my ear. After a while, you'll want to call Duane Marrs, Bobbye Seymore, Ricky Davis or a number of the other fine technicians and have the guitar go to the PSG SPA. |
Jack Anderson
Member From: Scarborough, ME
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posted 19 December 2003 12:38 PM
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The rack and barrel part isn't really too hard to deal with it, once you have the barrels clean and moving freely (but not too freely). Like Tim said, start with each barrel about half screwed out, and another tip is to leave a little slack between the barrel and the rack when tightening the set screw on the pull rod (with no pressure on any pedal or knee lever). If you can't tune a pull up (or down) to where you want it, go back and set the barrel a little closer to the rack. The real headache on Crossovers is the crossover selector itself: each pedal (and the typical single knee lever) has its own adjustment for engaging with the crossover mechanism, and if they aren't set just right they tend to "pop out of gear" individually (leaving you with a pedal that doesn't do anything) -- or else the whole thing pops out of gear (but that's not so bad -- just switch to the other neck and keep picking). Then of course there's the weight, which you already know about. But they sure sound good! |
Ernest Cawby
Member From: Lake City, Florida, USA
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posted 21 December 2003 06:43 PM
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On the Carter web site you can download the Manual for Sho-Bud, It says back the screw out 4 turns, that worked for me.
I use to go up top and then back down, once I tried it the right way no more uo and down.ernie |
Jim Whitaker
Member From: Hamilton, Ohio, USA
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posted 21 December 2003 07:06 PM
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Ernest where on there website I didn't see anything on rack and barrel under the owners manuals.?------------------
JIM
"Zum SD10 3/6 ""Carter SD10" "74" LTD & Session LTD, Profex II "55" Esquire, "63 Epiphone, "63" Precision,
"71" Jazz
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Ricky Davis
Moderator From: Spring, Texas USA
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posted 21 December 2003 08:55 PM
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Right here on this page> Click HERE for Manual Page
And on that page; you will see the manual for the Shobud Professional....and you need Acrobat Reader to see it....and it is AWESOME in the discriptions of how these babies Work.
Ricky |
Jim Whitaker
Member From: Hamilton, Ohio, USA
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posted 21 December 2003 09:27 PM
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Thanks all for the info!
You guys are great!!------------------
JIM
"Zum SD10 3/6 ""Carter SD10" "74" LTD & Session LTD, Profex II "55" Esquire, "63 Epiphone, "63" Precision,
"71" Jazz
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