I'm sorry, can't resist: "small jumbo"? Will it be enormously small? Tiatinically tiny? Boldly restrained? Massively petite?...
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| 12 Fret OLF Small Jumbo http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=44787 |
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| Author: | Dan Pennington [ Wed Dec 24, 2014 3:03 pm ] |
| Post subject: | 12 Fret OLF Small Jumbo |
I'm thinking about building a small jumbo with a 12 fret neck. I have the OLF plans from StewMac. Has anyone done a 12 fret version? I'm thinking that it should be easy to move everything down into the body 2 frets worth. Thinking maple with a cedar or redwood top. Suggestions? Cautions? |
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| Author: | Alex Kleon [ Wed Dec 24, 2014 3:36 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
Are you going to do a slot head? I think that would look great. Alex |
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| Author: | Dan Pennington [ Sat Dec 27, 2014 11:37 am ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
Most of the guitars I've made have slotted heads and I'm getting a little tired of them. So, I'm leaning to a paddle head. |
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| Author: | rlrhett [ Mon Dec 29, 2014 3:09 am ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
I'm sorry, can't resist: "small jumbo"? Will it be enormously small? Tiatinically tiny? Boldly restrained? Massively petite?...
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| Author: | Woodie G [ Mon Dec 29, 2014 8:11 am ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
There was a very nice 12 fret SJ entered in the 2013 Challenge. Maybe send a note to the builder? |
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| Author: | Greg B [ Mon Dec 29, 2014 2:04 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
FWIW, I've made a 'Big' Jumbo in a 12 fret version. I did it by adding about 1/2" to the upper bout, and then sliding the bridge and X brace back the rest of the way. Without the cropped upper bout of the 14 fret, the body shape ends up looking more like the early Gibson body styles. Obviously it could also be done just as you propose, by sliding the bridge and X brace back the two fret distance. I would probably shift back the soundhole and upper brace along with them if I were doing that, and add a second small UTB or popsicle to the upper bout. |
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| Author: | Don Williams [ Mon Dec 29, 2014 6:04 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
I think that model looks more like a Jumbo Shrimp... |
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| Author: | klooker [ Mon Dec 29, 2014 8:54 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
What does everyone think about opening the X a little too since shifting it downward will shrink the area below the X to the rim? I did this on my 13 fret L-00 build based off the Grellier 14 fret plan. I'm happy with the results but can't compare it to anything and I'm not experienced enough to know how much effect the X-angle had on the final sound. Kevin Looker |
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| Author: | Bryan Bear [ Tue Dec 30, 2014 10:50 am ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
Kevin, did you mean tightening the X? Shifting the bridge back and leaving the x in the same position would make the span between the legs of the X at the (new) bridge location wider (requiring a longer bridge). tightening the X angle and leaving the intersection at the same place would keep the bridge length the same, no? I'm in the process of making a 12 fret on my regular 14 fret body shape and am trying to plan my bracing changes. In my mind it seams you have to choose between shifting the X back and shrink the size of the lower bout behind the X, narrowing the X and shrink the area between the X legs, widen the bridge (but this would take a lot of extra bridge and weight), or some combination of the three. Do I have that wrong? |
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| Author: | klooker [ Tue Dec 30, 2014 4:22 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
I just threw it out there for discussion. If you shift the X down to accommodate lowering the sound hole, the area below and between the X is reduced. This is where the sound originates (through the bridge) & it seems like making this area smaller would also make it stiffer and possibly reduce the efficiency. If you open the X, the area will enlarge and become less stiff. Yes, you'll have to adjust the size of the bridge patch but not the bridge. Again, just a thought for discussion. edit Bridge plate, not patch. |
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| Author: | PT66 [ Mon Feb 09, 2015 4:52 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
I built a guitar with the rounded look of a jumbo but smaller with a 12 fret neck. I call it a Jumbo Parlor guitar. I used black walnut back and sides with a butternut top and cherry neck. |
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| Author: | stan t [ Thu Feb 12, 2015 9:42 am ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
Built several. I pretty much used a normal (whatever that is) brace pattern, but did not scallop. Looked great and big voice. I made mine from coco and either cedar or addie tops. |
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| Author: | Dan Pennington [ Thu Feb 12, 2015 10:43 am ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
Thanks, Greg B, PT66, and stan t Can you post some photos of your guitars? |
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| Author: | Greg B [ Thu Feb 12, 2015 1:31 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
It's a bit distorted from the camera but you get the idea. 
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| Author: | Ruby50 [ Fri Feb 13, 2015 1:04 pm ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
Greg Nice guitar. Is that a J-185 body? I am in the middle of designing one like it. More pictures anyone? Ed |
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| Author: | PT66 [ Thu Feb 19, 2015 8:26 am ] |
| Post subject: | Re: 12 Fret OLF Small Jumbo |
This is my walnut and butternut guitar |
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