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| Author: | tl507362 [ Tue Apr 05, 2005 7:09 am ] |
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Quick question, and I think I know the answer, but not sure. What is the difference between the fretboard radius and the top/back radius? Top/Back uses "feet" radius, so a 25 foot radius is basically a 25' diameter ball and a cut out section of the bottom of the ball. But a fretboard radius is in inches, is this correct? So a 12" radius is the same as a small cutout section of a 12" diameter ball? It just seems that the radius is much greater when you talk in inches, but a fretboard radius doesn't look that curved. Tracy |
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| Author: | LanceK [ Tue Apr 05, 2005 7:14 am ] |
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Your correct - |
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| Author: | Don Williams [ Tue Apr 05, 2005 7:32 am ] |
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No, not correct. Diameter = Radius x 2 So, a 12" diameter ball would have a 6" radius. |
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| Author: | HankMauel [ Tue Apr 05, 2005 7:33 am ] |
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NO! Wait...don't sand that fingerboard radius yet! 
A 12 inch radius would be cut from a 24 inch diameter ball, or circle. A cut from a 12 inch diameter ball would give you a 6 inch radius. Radius is from the center of a circle to the perimeter, or 1/2 the diameter. |
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| Author: | tl507362 [ Tue Apr 05, 2005 7:42 am ] |
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Thanks Hank, so if that is true, then a guitar top that has a 25' radius would have been a radius from a 50' diameter ball? |
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| Author: | Mattia Valente [ Tue Apr 05, 2005 7:42 am ] |
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Yep. The back and top are the surfaces of a sphere (or ball) with a pretty darn huge diameter (twice the radius), measured in feet, but the fingerboards are sections of a cylinder (single radius) or a cone (compound radius) measured in inches (and again, diameter = twice the radius). If you look at a fingerboard head-on, you can plainly see the curve over a span of less than 2". Look at a 2" wide piece of top or back, and I challenge you to see any curvature at all. |
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| Author: | tl507362 [ Tue Apr 05, 2005 7:48 am ] |
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Thanks for clearing that up Mattia. Makes sense! |
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| Author: | HankMauel [ Tue Apr 05, 2005 8:07 am ] |
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What Mattia said. Tops and backs are HUGE radii items. |
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| Author: | LanceK [ Tue Apr 05, 2005 8:41 am ] |
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Um - ya what he said! Actually I've always thought it was part of a smaller ball - I stand corrected 
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| Author: | EricKeller [ Tue Apr 05, 2005 9:24 am ] |
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Lance, I think you are thinking about the smaller radius top that results when the drum player wraps an ovation around a heckler's neck. Or something like that. |
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| Author: | bob J [ Tue Apr 05, 2005 10:52 am ] |
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WAIT-it's a piece of pie X the radius of the plate squared. |
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| Author: | HankMauel [ Wed Apr 06, 2005 2:31 am ] |
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[QUOTE=bob J] WAIT-it's a piece of pie X the radius of the plate squared.[/QUOTE] CAKE????
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| Author: | Michael Dale Payne [ Wed Apr 06, 2005 3:15 am ] |
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Pudding...How can you have any pudding if you don't eat your meat.......pie R square.....Just another birick in the wall other wise known as the area a circle |
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| Author: | HankMauel [ Wed Apr 06, 2005 3:16 am ] |
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Not if you measure in cubic furlongs per fortnight!
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