s7320 neck - bridge radius - Jemsite
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post #1 of 4 (permalink) Old 07-14-2010, 04:16 PM Thread Starter
Join Date: Mar 2010
Location: Ludlow, MA
Posts: 86
s7320 neck - bridge radius

I just picked up a 7320 and I've read a few threads here and elsewhere about how the ZR trem radius is 430mm and the neck is 400mm. My OCD kicked into high gear and I got to thinking about how much of a "problem" this is.

It turns out that when both radii are compared and a 66mm line is drawn across the top (size of fingerboard at fret 22) there is not much of a difference. The "gap" between the two radii at the 1st and 6th sting is only .008 inches or .19mm. Quite insignificant. I used a cad program to do this.

So is it worth putting trem shims in the trem? Depends on the level of OCD I guess. Please share if anyone has hands on experience putting in the shims and has had real world results.

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File Type: pdf radius closeup.pdf (29.8 KB, 0 views)
File Type: pdf s7320 radius comparison.pdf (30.1 KB, 0 views)
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post #2 of 4 (permalink) Old 07-14-2010, 04:31 PM
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Join Date: Dec 2000
Location: South Jersey
Posts: 25,756
Re: s7320 neck - bridge radius

You're assuming all saddles are precise thickness, every baseplate mold is exact, and every neck is a perfect radius. I've used up to 3 times that thickness on some stings, and then I've had a few that were perfectly radiused, which I can only explain as, even a blind squirrel finds a nut every now and then.

Does it matter? At 3mm action, no. At 1.5, yes.
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post #3 of 4 (permalink) Old 07-14-2010, 04:37 PM Thread Starter
Join Date: Mar 2010
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Posts: 86
Re: s7320 neck - bridge radius

Thanks Rich. I put my order in for shims even before this post
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post #4 of 4 (permalink) Old 07-14-2010, 08:03 PM Thread Starter
Join Date: Mar 2010
Location: Ludlow, MA
Posts: 86
Re: s7320 neck - bridge radius

Can anyone shed some light on the best way to measure for shimming the saddles? Do you look down the neck and try to match it visually or just put some of the heavy gauge shims on the outside stings and see where it gets you? That would be a hassle having to restring, unstring... I looked but I can't find a radius tool anywhere that is the correct size.
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