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Topic: A new tuning issue |
John Neff
From:
Athens, GA
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Posted 27 Apr 2021 5:52 pm |
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Here’s a new one on me. On my Mullen G2 SD10 (which has been very stable and pretty much issue free over the 10 years or so that I’ve had it) the 5th string (B) raises to C# flat when the A pedal is depressed slowly, but when pushing the pedal quickly it arrives all the way to pitch. String 10(it’s lower octave) doesn’t have this problem. I’ve had this set of NYXL 12s(which I’ve been using for 5 years or so)on for about 3 weeks but the issue just started happening today. Last summer I added compensators from the A pedal to strings 7 and 1. Any ideas?
Thanks,
-John |
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Tucker Jackson
From:
Portland, Oregon, USA
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Posted 27 Apr 2021 6:33 pm
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Hi, John. Flip the guitar over in the case and work the A-pedal while watching the changer. The spring on the 5th string should not move. If it does, you need to do one (or both) of the following:
Lube the rivet that holds the changer fingers together (deep in the bowels of the changer. You might have to use a piece of wire, like from a coat hanger, to run a little oil down it to direct it to the rivet.
The other thing to do is tighten that spring a little... but as little as possible, just enough to keep it from moving when doing a raise.
If that doesn't work... I got nuthin'. |
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Jerry Overstreet
From:
Louisville Ky
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Posted 27 Apr 2021 8:01 pm
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| I would detune the compensators and see what effect that has first. If the problem goes away, then you'll have to examine the linkage on the comps. I would probably do one at a time and test. |
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Jon Light (deceased)
From:
Saugerties, NY
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Posted 28 Apr 2021 3:20 am
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| I agree with the suggestions so far. Add: over-adjusted raise helper springs can create over-sensitivity to pedal speed variations. No, I cannot explain how or why that would arise suddenly out of nowhere. |
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John Neff
From:
Athens, GA
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Posted 28 Apr 2021 4:34 pm
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| Thanks, Tucker, Jerry, and Jon! I tuned the comp out and the issue persisted, so I flipped it over and followed Tucker's suggestions. Using a plain guitar string, I think a bead of 3&1 oil made it down to the axle(is this the same as the rivet?) and the 5th string's return spring was moving, so I tightened it a little. Now this felt like an improvement but still a little of the issue, so I tightened the return spring a little more and that did the trick! Thanks again, guys! |
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Jerry Overstreet
From:
Louisville Ky
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Posted 28 Apr 2021 4:41 pm
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