Seating strings

[Ric Brekne]

Hi folks.

We've been through this one many times. It seems perfectly obvious to 
me, and has for about 6 years now since I first heard this << strings 
dont climb the pins >> claim, that for whatever reasons, the strings do 
indeed and in the face of positive downbearing, find themselves on 
frequent occasion up the pins and away from the bridge just a tad.  You 
can measure the conditon of downbearing, make sure there is positve crow 
and still find strings not seated.  The fact that it is difficult to 
understand how this can be does change this fact.  Indeed, the lack of 
an explanation for any phenomena says only <<we do not understand>>.  It 
is in itself not an arguement for or against anything.

Just measure downbearing, crown, and whatever else you can think of on 
the occasion you find yourself in a string seating situation. I have and 
most often when I find strings needing seating, I find positive 
downbearing a plenty.  The report of Don's video does not suprise me in 
the slightest, I'd love to see it.

Cheers
RicB


>/ 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