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-   -   Hatcher Penelope Crossover (https://www.acousticguitarforum.com/forums/showthread.php?t=257818)

Mark Hatcher 07-07-2012 04:07 PM

Hatcher Penelope Crossover
 
Hello,

I've been running a build thread in the Custom section on two Koa Penelope models, one steel string and one nylon string crossover; http://www.acousticguitarforum.com/f...d.php?t=237196
I thought I might post some of the pictures of the crossover here. I would be interested in your comments as this is my first nylon crossover model;

http://farm9.staticflickr.com/8164/7...db8262e8_c.jpg

http://farm9.staticflickr.com/8020/7...acbfbbbd_c.jpg

The specs are;

Koa back and sides
Swiss Spuce top
25.5" scale length
Cocobolo trim
Ebony finger board
Ivory nut and saddle
Knilling Planetary tuner pags 4 to 1 gear ratio
1 7/8ths" nut
2 5/16ths" string spacing at saddle
Lower Bout 14 7/8“
Waist 8 5/8”
Upper Bout 10 7/8”
Body Length 19 3/4”
Depth at Tail block 4 1/8”
Depth at Neck block 3 1/4”

I kept pretty traditional on the sound board bracing and I used lattice bracing on the back;

http://farm8.staticflickr.com/7270/6...31f2a233_c.jpg

http://farm7.staticflickr.com/6034/6...41f39062_c.jpg

http://farm8.staticflickr.com/7037/6...71e055d7_z.jpg

The Knilling tuner pegs allow for some real fun designing an open headstock;

http://farm9.staticflickr.com/8014/7...ceddc333_z.jpg

http://farm8.staticflickr.com/7096/7...a803536c_z.jpg

I'm sticking traditional with the bridge;

http://farm9.staticflickr.com/8007/7...5651e225_z.jpg

Currently I'm French polishing the sound board and neck and will get to hear it soon!

http://farm9.staticflickr.com/8010/7...f1933f0c_z.jpg

http://farm8.staticflickr.com/7264/7...b7b28d24_z.jpg

Thank-you for viewing,
Mark

ross748 07-07-2012 06:17 PM

Just beautiful.

Mark Hatcher 07-08-2012 01:51 PM

Quote:

Originally Posted by ross748 (Post 3101652)
Just beautiful.

Thanks ross748!

Mark

googoobaby 07-08-2012 02:57 PM

It's very lovely, especially the headstock. How do those tuning pegs work?

J.R. Rogers 07-08-2012 03:09 PM

Very nice! I really like your headstock design and the detail on your bracing work. Clean. :up:

JR

Barb1 07-08-2012 03:22 PM

That is one beautiful guitar! I'd love to hear sound clips when it is strung. I feel a gas attack coming on:-)
Barb

Mark Hatcher 07-08-2012 06:23 PM

Quote:

Originally Posted by googoobaby (Post 3102701)
It's very lovely, especially the headstock. How do those tuning pegs work?

Thanks for your comments googoobaby and JR!

The tuning pegs have a set of internal planetary gears that give the 4 to 1 ratio. They are set in such a way that you can change the resistance to turning by pushing or pulling on them similar to regular friction pegs. Knilling has a good website that explains it pretty well.
The pegs weigh about the same as regular Ebony pegs do, which is not much. You may have noticed that I have a torsion bar that isn't normal for a nylon string guitar. I added it to replace some of the weight lost by not having regular tuners on the head (if the neck is too light it can effect sustain). I figuered if I'm going to add weight it may as well do something.

Thanks Again!
Mark

Mark Hatcher 07-08-2012 06:28 PM

Quote:

Originally Posted by Barb1 (Post 3102721)
That is one beautiful guitar! I'd love to hear sound clips when it is strung. I feel a gas attack coming on:-)
Barb

Thanks Barb!

i really enjoy building this model and would be more than happy to help you out with that gas!
Danny Combs is getting this guitar. I'll be sure to post some sound clips of him playing it.

Thanks,
Mark

alma_shortscale 07-08-2012 06:58 PM

It's very pretty. I love the rosette and headstock. But it looks naked. Where's the bridge? And I don't care for the way the tuning pegs stick out so far. (Eye of the beholder.)

acousticjazz 07-08-2012 09:13 PM

Beautiful guitar, love to hear a sound clip when she's ready.

Mark Hatcher 07-09-2012 12:39 PM

Quote:

Originally Posted by alma_shortscale (Post 3102987)
It's very pretty. I love the rosette and headstock. But it looks naked. Where's the bridge? And I don't care for the way the tuning pegs stick out so far. (Eye of the beholder.)

Hello Alma and Acousticjazz,

Thanks for commenting. It will be a couple weeks before it's finished, the bridge is on, and I can get some sound samples. I know the "open hand" look of the tuner pegs won't be for everyone and I appreciate your thoughts. What I do like about them is the ability to have curved sides on an open headstock. It opens up a lot of room for design creativity. Plus, I like the feel and function of these pegs. As you say, "eye of the beholder"

Thanks Again for Your Comments,
Mark

jkwrpc 07-10-2012 10:15 AM

Very very very nice.

I would be interested to learn how many hours it takes to create something like. Like the others I will be looking very forward to hearing a sound clip (or two).

I am curious about the 4:1 ratio on the tuners. Given today some are as high as 21:1 perhaps you can share why you went with this ratio? I suspect there is some history to this decision. By the way the tuners and headstock are impressive! Thanks for sharing the photo.

Mark Hatcher 07-10-2012 02:44 PM

Quote:

Originally Posted by jkwrpc (Post 3104896)
Very very very nice.

I would be interested to learn how many hours it takes to create something like. Like the others I will be looking very forward to hearing a sound clip (or two).

I am curious about the 4:1 ratio on the tuners. Given today some are as high as 21:1 perhaps you can share why you went with this ratio? I suspect there is some history to this decision. By the way the tuners and headstock are impressive! Thanks for sharing the photo.

Thanks for commenting jkwrpc,

I can't say how many hours. Typically, I spend about 3 months start to finish on a guitar but I'm not working on it the whole time. There are many breaks especially in the finishing proccesses.
I guess the way I look at the tuners is comparing the ratio to a regular tuner peg, which of course, is a 1 to 1 ratio! What really draws me to them are two things, how light they are and the flexibility of design that they allow. You can't make an open headstock like that with standard tuners and I love the open hand look. I do seem to get a mixed reaction to the design. I'll just have to see how many orders I get.

Thanks,
Mark

jkwrpc 07-11-2012 09:00 AM

I truly hope you get a lot of orders! This is one very beautiful guitar. While I have no real point of reference on the tuners, I really love the headstock.

Mark Hatcher 07-11-2012 05:07 PM

Quote:

Originally Posted by jkwrpc (Post 3106089)
I truly hope you get a lot of orders! This is one very beautiful guitar. While I have no real point of reference on the tuners, I really love the headstock.

Thank you very much jkwrpc.
Mark


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