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thread for pinless bridge?
http://mowrystrings.luthiersforum.com/forum/viewtopic.php?f=10102&t=13870		 Page 1 of 2
Author:  Ricardo [ Wed Oct 03, 2007 4:20 am ]
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Anyone have info on how to make a pinless bridge?  Thanks Rich
Author:  Michael Dale Payne [ Wed Oct 03, 2007 4:32 am ]
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Look at Mike Doolin's site for what I think is the best pinless design out there.
Author:  Ricardo [ Wed Oct 03, 2007 6:17 am ]
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Thanks Michael I'll check it out.
Author:  WaddyThomson [ Wed Oct 03, 2007 7:36 am ]
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Here is a thread earlier this year on pinless bridges.
Author:  Michael Dale Payne [ Wed Oct 03, 2007 8:16 am ]
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here Mike Doolin's design

Author:  James W B [ Wed Oct 03, 2007 9:28 am ]
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Is there any advantage to a pinless bridge?I`m really a lot fonder of the looks of pins, especially un-polished bone.         & nbsp;         & nbsp;  James
Author:  scotto [ Wed Oct 03, 2007 11:36 am ]
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I know my Tacoma Chief has a pinless bridge...but you prob know that about Tacoma...if not check it out...
Author:  scotto [ Wed Oct 03, 2007 11:40 am ]
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http://elderly.com/images/vintage/20U/20U-11223_front-detail .jpg


link to photo of their design
Author:  FishtownMike [ Wed Oct 03, 2007 12:26 pm ]
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Yeah that Mike Doolin bridges is nice. Is this a patented design.
Author:  peterm [ Wed Oct 03, 2007 12:37 pm ]
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I like the Doolin design a lot.... wonder why..





I do it very much like Mike Doolin. Let me know if I can help.
Author:  Ricardo [ Wed Oct 03, 2007 12:48 pm ]
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[QUOTE=scotto]

http://elderly.com/images/vintage/20U/20U-11223_front-detail .jpg


link to photo of their design

[/QUOTE]
Wow Scotto thats cool!
Author:  Ricardo [ Wed Oct 03, 2007 12:50 pm ]
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The Doolin design is nice, but I'm not so sure that seeing the end winding of the string is pretty. 
Author:  TonyKarol [ Wed Oct 03, 2007 11:18 pm ]
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I like the Doolin design too, but if you use Daddario strings with the coloured ends it looks rather stupid. I will be making mine with a routed channel in the rear edge to hide the string ball ends. Got a router bit at last years Woodstock wood show for 5 bucks that will do it perfectly. Marc Beneteau does something similar.
Author:  Tim McKnight [ Wed Oct 03, 2007 11:58 pm ]
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Mike Baranik has a great design too.
Author:  Bob Garrish [ Thu Oct 04, 2007 7:23 am ]
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My design hides the ball ends, as well, though I was considering one where they could be seen. I'm also quite fond of Doolin's design.

Author:  Michael Dale Payne [ Thu Oct 04, 2007 7:57 am ]
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[QUOTE=James W B] Is there any advantage to a pin-less bridge?I`m really a lot fonder of the looks of pins, especially un-polished bone.         & nbsp;         & nbsp;  James[/QUOTE]

Personal opinion is no structural advantage maybe a slight disadvantage at lease structurally.

With a pined bridge the force of the ball end of the string puts the top to bridge joint in compression Now the force of the stings on the saddle add a bit of shear. so the one force is fighting the other or the compression of the ball end into the bridge plate and top help counter actelevated the shear of the rotational force on the saddle.

With a pin-less bridge both forces that the stings impart are in shear and or rotation. and only the glue joint is fighting this force.

Of course I am referring to pin-less that are only glued on.
Author:  Michael Dale Payne [ Thu Oct 04, 2007 8:00 am ]
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Personal opinion is no structural advantage maybe a slight disadvantage.

With a pined bridge the force of the ball end of the string puts the bridgeplate and top to bridge joint in compression Now the force of the stings on the saddle add a bit of shear and rotation. so the one force is fighting the other or the compression of the ball end into the bridge plate and top help counter act the shear of the rotational force on the saddle.

With a pin-less bridge both forces that the stings impart are in shear and or rotation. and only the glue joint is fighting this force.

Of course I am referring to pin-less that are only glued on.
Author:  Ricardo [ Thu Oct 04, 2007 10:40 am ]
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Michael, aren't classicals pinless.  Somehow they survive, maybe because the bridges tend to be much wider.  I guess you are suggesting that putting a pinless bridge of the smaller size is not as strong as using pinned bridge.
Author:  WaddyThomson [ Thu Oct 04, 2007 10:53 am ]
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In reality, classical bridges are narrower, but the strings are tied, and the stress from the nylon strings is not even close to the stress from steel strings.
Author:  Ricardo [ Thu Oct 04, 2007 11:52 am ]
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For purposes of a uke then the pinless bridge should be no problem.
Author:  WaddyThomson [ Thu Oct 04, 2007 11:55 am ]
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I would say that's the case.
Author:  peterm [ Thu Oct 04, 2007 1:00 pm ]
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[QUOTE=fmorelli] Classicals don't have 180 lbs of pull.

Doolin and/or Elliot seem to have metal stubs which the ball ends attach to. Do those stubs go through to the bridge plate? If so, then you'd reduce the sheer and corresponding concerns about creep.

Peter a few closer photos of yours, along with information on design inspiration and how yours actually is constructed would be wonderful to hear. Thanks for sharing!

Filippo[/QUOTE]

Filipo,
the posts that hold the strings are anchored through the bridge at an angle and go straight through the bridge plate. Because of that the tension is not on the bridge alone but pulls from the bridge plate. IMO it drives the top better....
Author:  Ricardo [ Thu Oct 04, 2007 3:14 pm ]
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[QUOTE=Bob Garrish]My design hides the ball ends, as well, though I was considering one where they could be seen. I'm also quite fond of Doolin's design.



[/QUOTE]

Bob, thats one beautiful bridge. Rich
Author:  Allen McFarlen [ Thu Oct 04, 2007 7:12 pm ]
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I read a while back on Fret's.com that Frank wasn't fond of pin
less bridges because he has seen his share of dents in tops when a string breaks. Don't know if that would be an issue with Doolin's style of bridge though.

I really like the look of both Mike Doolin's and Bob's. 
Author:  Michael Dale Payne [ Fri Oct 05, 2007 12:00 am ]
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yep but much much less tension on the strings
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