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need help un-pinging this guitar string - Gibson 195 bridge

Postby DC-Choppah » Thu May 21, 2020 10:01 pm

High E sting makes a pinging sound as the string moves in the bridge up and down.

Hope this video makes the problem self explanatory.

https://drive.google.com/open?id=116cpX ... b-eKZqMJLM

Let me know what you think I should do to fix this myself.

Thanks!
DC
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Re: need help un-pinging this guitar string - Gibson 195 bridge

Postby zenguitar » Thu May 21, 2020 10:22 pm

First step is to examine the saddle and see if there is a groove cut into it which is catching the string. I would use a scalpel for this as the very fine edge to the blade would catch quite fine grooves.

If there is a groove, you need to find a way to remove it, rotate the saddle to hide it, or maybe swap for one of the saddles on one of the heavier wound strings (they wouldn't suffer the same problem with the groove).

Andy :beamup:
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Re: need help un-pinging this guitar string - Gibson 195 bridge

Postby Wonks » Fri May 22, 2020 7:38 am

It's a roller bridge, so it shouldn't ping. First thing it to check whether the rollers are rotating freely. If not, I'd take the bridge off, give it a good squirt of something like WD40 or a penetrating oil, and hopefully the rollers then roll. Give a few more squirts, continue to play with the rollers until they are all moving freely. Then clean off the WD/oil and apply a touch of a thin lubricating oil to the shaft of each saddle.

If the rollers are all rotating, then it's probably due to the fact that the Bigsby isn't quite aligned properly. I can see the strings move sideways when you pull the lever. It really needs to be moved so that the string pull remains straight when the Bigsby lever is depressed. The sideways movement may have worn a groove in one or more roller saddles, so check for that, though simply rotating the saddles 180° should present a notch-free face.

It may be that some fine grit sandpaper, say 600 grit, run in the saddle barrel grooves may smooth things out for now.

But really, assuming the floating bridge is positioned correctly, I'd suggest that it's the Bigsby that should probably be re-installed. I'm saying that without seeing it, so you may disagree. But the video clearly shows the strings moving sideways. If that keeps happening, then the problem will re-occur.
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Re: need help un-pinging this guitar string - Gibson 195 bridge

Postby Music Wolf » Fri May 22, 2020 8:05 am

I'm no luthier but, looking at your video and comparing with the roller bridge that I fitted to my Casino, I'd say that the bridge is not aligned.

On my Casino the unwound strings are sitting right in the middle of the groove, yours seem to be sitting up against the top (bass) side of the roller. If I apply a lot of sideways movement to the string, as your are doing in the video, there are no clicks. If I force the string out of position as per your starting point I get the same click.
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Re: need help un-pinging this guitar string - Gibson 195 bridge

Postby Wonks » Fri May 22, 2020 8:54 am

Music Wolf wrote:I'm no luthier but, looking at your video and comparing with the roller bridge that I fitted to my Casino, I'd say that the bridge is not aligned.
It's a floating bridge and the bridge is presumably aligned so the strings run parallel with the sides of the neck and its in the right place to intonate. If that is the case, then it can only be the Bigsby that's misaligned. This does come from the pre-enlightenment era where Gibson QC was not at its bes.t

It's a TonePros roller bridge, so good quality stuff (made by Gotoh).

Just make sure that the bridge locking hex screws are tight, as if not, it may be that the sideways movement is dragging the screws against the post.
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Re: need help un-pinging this guitar string - Gibson 195 bridge

Postby Wonks » Fri May 22, 2020 10:12 am

However, if the strings as shown are intonated correctly, and provided the base of the bridge isn't pinned in place, there is room for the bridge to be rotated clockwise around the centre, so that the strings do run more parallel to the rollers. The saddles will need to be moved a bit to intonate correctly, but you could probably get the bridge sitting a lot closer to 90° to the strings, which always helps tuning stability.

And forget what I said about the Bigsby position. Perils of looking an a small phone screen. I had the guitar the wrong way round mentally, and you are bending the string with your finger, not the Bigsby. There are times when my stupidity astounds me.

So probably a small groove in the roller saddle, possibly caused by the roller sticking. As Zen said, you could try swapping the saddles round, but that's not easy on a Nashville bridge with the tiny circlips holding the intonation screw in place. I've never succeeded in removing and replacing them.
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Re: need help un-pinging this guitar string - Gibson 195 bridge

Postby DC-Choppah » Fri May 22, 2020 12:19 pm

If I bend the high E string up on a note, say bend a high D up to a D#. That is enough to 'set' the string into the groove.

Then if I down pick the E string firmly, that is enough to make it ping. Then when I bend the high D again, it will ping again. Back and forth like this as I play.

I am not using the Bigsby. Actually I want to de-whammy this guitar. It just messes with the tuning. I love the tone and feel of this guitar. But no need for the whammy.


In the video I am not using the whammy. I am fingering the E string and bending it to make the ping sound. The guitar is oriented so the whammy is on the left and the neck is to the right.
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Re: need help un-pinging this guitar string - Gibson 195 bridge

Postby DC-Choppah » Mon May 25, 2020 6:58 pm

SOLVED

Thanks for the suggestions, I removed the High E string. The roller turned fine. The roller did not appear to have a groove in it. I smooth it with sand paper, no help. All of the rollers appear the same, so swapping didn't seem like it would help. Plus that looks impossible like Wonks said.

https://drive.google.com/open?id=1Gtg-W ... -I2Kcf9kxl

The string, under tension just grabs onto the metal roller surface.


So I put a little piece of felt fuzz between the string and the saddle, like the way a violin has a little sleeve to keep it from grooving the wooden bridge. This works!

https://drive.google.com/open?id=1Gtg-W ... -I2Kcf9kxl
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