Shift Damping Was backchecks

[Jim]

Dear Tom:

This is a common problem.  This is why Bosendorfer does not shift
completely off the left string. When the action does shift completely
off the left string, the left string keeps the damper from following
the other two strings for half of the strings up and down cyle
during the attempt to dampen the note.
This is expecially true with the flat dampers, not so true with
the wedges - trichords, bichords.  The only thing that bugs me worse
than this is when an artist plays FFF with the full shift pedal down.
That will knock out anybody's unisons.

Jim Coleman, Sr.

PS my middle initial is W.  stands for Unisons Unisons


On Fri, 8 Nov 1996 TLowell989@aol.com wrote:

> Greetings fellow technicians:
>
> I agree with Jim Coleman Sr. re: backcheck.  Here is a similar question
> though:
> Why does engaging the shift pedal cause damping problems on so many grands?
> One would think (like with the backcheck and the hammer) that the two systems
> are unrelated.  Typically the problems (diminished damping) are in the
> midrange and low treble, although it varies within this range from piano to
> piano.  Any ideas?
>
> Tom Lowell (new subscriber)
>