Seating strings

[Michael Spalding]

And, as a practical matter, where do you find the most false beats and do
the most string seating?  Octave 5 and above, where the vibrational
displacement of the string is barely, or not, large enough to see.   And
does it occur as often on verticals, where the direction of the hammer
impact should help to seat the string?  Now, which string was shown in the
film?  I'm guessing it was a long heavy bass string, as they would have the
largest / slowest displacement and make the most interesting film.   I'm
inclined towards Ron's vision of what's happening at the bridge pins.

Mike


> [Original Message]
> From: Ron Nossaman <rnossaman@cox.net>
> To: Pianotech <pianotech@ptg.org>
> Date: 4/14/2005 8:21:08 AM
> Subject: Re: Seating strings
>
> > I just saw a presentation by Don Mannino in Syracuse, NY which included
some
> > high tech films of pianos in action.  One film was of a string moving
up &
> > down at the bridge and it sure looked like that string might creep up
the
> > pin after awhile, great presentation if you get a chance to see it.
> > 
> > Rob E.
>
> Against positive downbearing, against a string offset angle, and pin 
> inclination, how is it physically possible for a string to climb, 
> creep, or otherwise get up a pin so it is no longer in contact with 
> the bridge cap, and stay there? I don't buy it. I'd like to see 
> anyone take a reasonably normal piano and make a string stay up a 
> pair of bridge pins without touching the cap. Most everyone seems to 
> take it on faith that this happens naturally and ubiquitously, but 
> no one seems able or willing to demonstrate that it is indeed 
> possible by doing it, and proving it by sliding something under the 
> string between bridge pins.
>
> Ron N
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives