false beats, etc.......

Joseph Garrett joegarrett@earthlink.net
Sun, 18 Dec 2005 14:03:19 -0800


---------------------- multipart/alternative attachment
Ron and list,
If the problem is loose bridge pins, and I believe that it is,

then why not replace with an oversized pin instead of super glue. I've 
never been quite happy with the lack of control over the application of 
super glue as it seems to go in places where I didn't want it. Perhaps
I'm 
using the wrong viscosity. We replace individual tuning pins with
oversize, 
why not bridge pins too?



Hi Greg,

Try the hypo oilers for applying the thin CA. They give very good
control.

I can't prove this but it seems logical to me that CAing the old pins
would yield much better results than oversize. CA will fill the voids
making a very tight fit. Plus it will reinforce the matrix of the
cellular structure (to borrow a technical description from Del) of the
wood, making it much stronger. Putting in an oversize pin will cause
more crushing of the wood thus weakening it and will widen any small
cracks. 

Dean,


Not to mention increase the side bearing. Which in turn increases the amount of stress on the already damaged wood. AND then, there is the diminishing of the space between the pins for string clearance!
For years I was against CA in any application on pianos. Not now. Loose bridge pins and tuning pins is the definate way to go IMHO! The only other answer to the problem is to recap and that ain't going to happen in the lion's share of pianos with horrible false beat syndrome. (PERIOD!)

Regards,
Joe Garrett, R.P.T. (Oregon)
Captain, Tool Police
Squares R I
---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a9/94/12/4b/attachment.htm

---------------------- multipart/alternative attachment--


This PTG archive page provided courtesy of Moy Piano Service, LLC