stretching wire

[Ron Nossaman]

>As noted before, the pin would only have to move 
> about 5 thousandths of an inch (a green punching ;-]  ) toward the capo 
> to give us a pitch change of about a semitone at 200lbs and 6" in 
> length, for 17 ga wire, as Ron N wrote.

That was just an illustration. In a real piano, there is more 
involved string length than just the speaking length, so the 
tuning pin would need to move more for a given pitch change.

Ron N