[pianotech] X-Ratcheting Counter Bearing Shim

[David Love]

I was more making a point about the ringing issue.  I think Jon can raise up
the string level above the felt so that it doesn't bear on it much at all
(if any) gain some greater lessening of friction and not worry about the
ringing.  You can always braid it if necessary anyway.  

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ron Nossaman
Sent: Sunday, April 11, 2010 6:26 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] X-Ratcheting Counter Bearing Shim

David Love wrote:
> I've produced this method of counterbearing and tried inserting felt 
> between the agraffes as well as not.  There doesn't seem to be any 
> ringing if the felt is not inserted between the counterbearing bar and 
> the agraffe.  I do insert felt on the tuning pin side even though that 
> doesn't seem to produce much ringing either.  Lately, however, I tend 
> to insert felt on both sides of the counterbearing bar more for looks 
> than anything else.  It's pretty soft felt though and doesn't apply much
if any real pressure on the strings.

Yea, I do that too, but that's different from trying to make it work without
fixing it. I've had some improvement with Protek, but...

Jon, If you insist on trying to patch it up when it needs redone (yea, I
know) how about some small heat shrink tubing, slit to slide under the
string along the full length that it contacts the felt. Ugly, fur shur, but
it might supply the aesthetic tipping point to a real rebuild.

<G>
Ron N