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PostPosted: Wed Nov 18, 2015 6:31 pm 
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Koa
Koa

Joined: Sat Apr 19, 2008 10:08 pm
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Location: Missouri
First name: Patrick
Last Name: Hanna
State: Missouri
Country: USA
I will state flat out that I am not crazy about your choice to cut the "parallel" braces to make room for your Charlie Christian pickup. Yes, I see the additional braces you glued in. I think you'd have had a stronger top by gluing in more widely spaced, short, parallel braces than your improvised "X" braces. I have no idea whether your player will hold up in actual use or not. I hope that you will let us know either way. I will freely admit that you have it looking real good on the outside. I am not so sure about the inside. I further understand that you don't really care about my opinion. I'm just sayin'.



These users thanked the author cphanna for the post: Johny (Thu May 12, 2016 8:27 pm)
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PostPosted: Wed Nov 18, 2015 10:41 pm 
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Mahogany
Mahogany

Joined: Sat Oct 03, 2015 10:50 am
Posts: 45
Thanks for reading, your comments are appreciated.

In playing position the force axis from the pickup is parallel to the top. Acceleration forces perpendicular to the top, acting through the pickup mass during rough handeling, stroage, transport or misshap, are counteracted by the x-bracing as in the original ES-150. The X-braces could extend to the lower bout to pass through the non-crossing kerfed braces, that would have weakened them. So, rather than removing the non-crossing kerfed braces, and risk damaging the top, they are left in place. Also, for example above the pickup, an ES-150 has the fingerboard glued to the top. In this case I left the brace remnants up there for support.

Interesting that tone-tapping the top reveals a strong bass resonance at the center. I suspect due to the mass of the pickup. This is responsible for the full bass tones in the recorded sample. A real sonic winner in this builder's opinion.
https://youtu.be/f4tcIQXNC2E


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PostPosted: Wed Nov 18, 2015 10:56 pm 
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Mahogany
Mahogany

Joined: Sat Oct 03, 2015 10:50 am
Posts: 45
Other solutions to pickup fitting that have been entertained.
Image
Image
Image


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PostPosted: Thu Nov 19, 2015 2:28 am 
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Contributing Member
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Joined: Sun Jun 08, 2014 10:06 pm
Posts: 414
First name: Allan
Last Name: Bacon
State: Kansas
Country: USA
Focus: Repair
icr wrote:
Thanks for reading, your comments are appreciated.

In playing position the force axis from the pickup is parallel to the top. Acceleration forces perpendicular to the top, acting through the pickup mass during rough handeling, stroage, transport or misshap, are counteracted by the x-bracing as in the original ES-150. The X-braces could extend to the lower bout to pass through the non-crossing kerfed braces, that would have weakened them. So, rather than removing the non-crossing kerfed braces, and risk damaging the top, they are left in place. Also, for example above the pickup, an ES-150 has the fingerboard glued to the top. In this case I left the brace remnants up there for support.
https://youtu.be/f4tcIQXNC2E


Jeeze, I love it when you talk engineering. Makes me feel at home.


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PostPosted: Thu Nov 19, 2015 11:49 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Tue May 13, 2008 10:44 am
Posts: 6256
Location: Virginia
Oh ok I see. I've never installed a pickup like that before thats interesting. I have an L-48 in the shop right now and looking inside it I noticed the same thing that I see on the bracing of your L-50. IT almost looks like they kerfed the bracing I guess to fit the arch? Strange.


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PostPosted: Sat Nov 21, 2015 5:30 am 
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Old Growth Brazilian Rosewood
Old Growth Brazilian Rosewood
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Joined: Fri Nov 02, 2007 9:49 am
Posts: 13390
Location: Ann Arbor, Michigan
First name: Hesh
Last Name: Breakstone
City: Ann Arbor
State: Michigan
Country: United States
Status: Professional
Some really nice work here, well done!


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PostPosted: Mon Feb 01, 2016 12:05 am 
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Mahogany
Mahogany

Joined: Sat Oct 03, 2015 10:50 am
Posts: 45
VIdeo of the guitar in action:
https://www.youtube.com/watch?v=tXO3o_Xd37c



These users thanked the author icr for the post: Finn.t.guitar56 (Thu May 05, 2016 12:53 pm)
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PostPosted: Mon Feb 01, 2016 12:10 am 
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Mahogany
Mahogany

Joined: Sat Oct 03, 2015 10:50 am
Posts: 45
jfmckenna wrote:
Oh ok I see. I've never installed a pickup like that before thats interesting. I have an L-48 in the shop right now and looking inside it I noticed the same thing that I see on the bracing of your L-50. IT almost looks like they kerfed the bracing I guess to fit the arch? Strange.

They also kerfed the bracing on some older ES-175s. Probably others also.
http://www.jazzguitar.be/forum/guitar-a ... 175-a.html


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PostPosted: Wed May 04, 2016 5:16 pm 
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Mahogany
Mahogany

Joined: Sat Oct 03, 2015 10:50 am
Posts: 45
I'm really enjoying this guitar. This is a recent image:

Image



These users thanked the author icr for the post (total 2): jayluthier (Sat Jul 02, 2016 5:22 pm) • Hesh (Wed May 04, 2016 10:04 pm)
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