Search found 9 matches

by benvaneven
Fri Oct 05, 2018 12:09 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: interpretation of data
Replies: 9
Views: 13349

Re: interpretation of data

I found a piece of spruce with a density of 436 kg/m^3 and Elong 14,1 Gpa. The target thickness comes at 2 mm and the estimated panel mass at 126 g. I think the stiffness allows to reduce the mass to acceptable numbers, so it seems to me this is a better piece of spruce then the one i mentioned befo...
by benvaneven
Fri Sep 28, 2018 8:53 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: interpretation of data
Replies: 9
Views: 13349

Re: interpretation of data

I corrected my coding and checked the results using the numbers of table 4.5.3 I have the same numbers. I am struggling with the units, i have to divide the target thickness by 1000 to get the result in mm. the same for panel mass. Should invest some time why that is. Nevertheless being able to calc...
by benvaneven
Thu Sep 27, 2018 9:15 pm
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: interpretation of data
Replies: 9
Views: 13349

Re: interpretation of data

Would be great if you can check the calculations. I did copy and paste, don't know if this is workable. I have other tops avaible. I will rectangle and thickness them and see what comes out. Many thanks for your time and advice. Target thickness Measured Top data mass (g) 182 Ll (mm) 525 Lc (mm) 197...
by benvaneven
Thu Sep 27, 2018 8:07 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: interpretation of data
Replies: 9
Views: 13349

Re: interpretation of data

I used the method for calculating the panel mass you proposed. The panel mass is 169,9g and the target thickness 2,8mm. I continue this build with this plate and for the next guitar I search for a lower density plate. Ll (mm) 525 Lc (mm) 197,5 h (mm) 4,1 mass (g) 182 Density (Kg/m3) 428,1156736 F lo...
by benvaneven
Tue Sep 25, 2018 9:03 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: interpretation of data
Replies: 9
Views: 13349

interpretation of data

I made calculations for top thickness and the predicted panel mass. For the calculation of the predicted panel mass I used the formula for the volume of a cylinder (I measured the topcontour with a tape measure). I then used the formula mass = density*volume. If my frequency measuring and my calcula...
by benvaneven
Wed Sep 12, 2018 4:08 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: determination of soundboard flexural rigidity
Replies: 7
Views: 15177

determination of soundboard flexural rigidity

I am reading the sections 4.4 design of braces and 4.5 design plates. My calculations for plate thickness were successful. Now I am trying to determine the soundboard flexural rigidity. I don’t see how to calculate the neutral axis of the soundboard cross section in fig. 4.4-19. I understand what is...
by benvaneven
Mon Jan 08, 2018 10:15 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: frequency responce curve interprtation
Replies: 2
Views: 5296

Re: frequency responce curve interprtation

Thanks for the quick responce.
I will keep posting about the build.
Ben
by benvaneven
Sun Jan 07, 2018 7:58 am
Forum: Contemporary Acoustic Guitar Design and Build - Trevor Gore
Topic: frequency responce curve interprtation
Replies: 2
Views: 5296

frequency responce curve interprtation

I am new to the forum. I am building guitar number 6. Still learning. I have read Trevor Gore's/Gerard Gilet's book last year. For this guitar I did not yet follow the instructions for thicknessing the top and back of the guitar. I thickness the fan braces by clamping the top in a mold and then I se...