Counter bearing treatment

[Delwin D Fandrich]

----- Original Message -----
From: Richard Brekne <richardb@c2i.net>
To: <pianotech@ptg.org>
Sent: January 11, 2000 1:19 PM
Subject: Re: Counter bearing treatment


> Del... this is of interest to me. I have this Grotrain that I have
mentioned a
> bit about and it is more or less configured as Jon  re-configured his
Baldwin.
> In addition in the treble section it has a non muted section between the
brass
> half round which passes over a section brass half round (about 3 inches
long)
> before going to the pins. The tenor is identical except that there is a
thick
> felt strip about a half inch wide for the strings to rest a bit on.. just
enough
> to mute them.
>
> Problem is with this piano is that there is like tons of energy leakage
through
> the aggraffes and even across the first half round. Drives me nuts really,
and I
> have been considering using the wide felt rest common in Yamaha tenor
sections..
> and like what this Baldwin R had to quite it down. I have hedged tho as
muting
> these sections isnt neccessarily going to help the fact that there is so
much
> energy leakage.
>
> Oddly enough... this G.S. has quite a bit of rendering problems as well.
>
> Thoughts... suggestions ??

------------------------------------------


Richard,

What are the string deflection angles and how close are the counter-bearing
bars -- and the felt strip -- to the agraffes?

Del