[CAUT] Wire Stretch

[RicB]

Hi Andrew.... could be... at least partially.  Could be along the lines 
Don mentioned as well.  Certainly something is giving... a friction 
moment is overcome.  I dont think anyone has even come close to clearly 
identifying the source of this click.  Lots of speculation... but no one 
that I know of has done any highspeed photography, or other conclusive 
experimentation to show exactly what this tick comes from..... grin.... 
like somebody has money to spend on that project !

Cheers
RicB


    Ric,
    Could string seating procedures also overcome friction at the bridge
    and move tension back behind the bridge?  I done it and heard "ticks"
    as the string let go of its oxidised bonds and passed over the
    bridge.  I've assumed that (in humid, rusty climates) the area behind
    the bridge can become a well of instability when pianos are tuned
    annually or less and these bonds can form.

    Andrew Anderson