Counter bearing treatment

[Richard Brekne]

I'll get this info measured off for you today.

Btw.. and this is for RON N as well. It looks like the University is going to go
along with a suggestion of mine to increase my hours a week by 7. These hours
are to be used for non-tuning maintanance of their instruments. I will be using
my RCT pianolyser a bit in this regard so will be able to get started measuring
off various data.

I am still not clear on just what data you all will find most interesting, tho I
have your last post on this. Nor am I clear on how to present it. In any case
I'll make a start sending this stuff off to you two as soon as I get rolling and
you can comment on whats being collected then.

Richard Brekne
I.C.P.T.G.  N.P.T.F.
Bergen, Norway

Delwin D Fandrich wrote:

> ----- 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