Piano wire tensile strength

[William R. Monroe]

Hi Cy,

I think what Paul was referring to was strings that have already been on a
piano for a bit, which acquire a bend where they travel throught the bridge
pins.  So, if you twist only a half turn, you now have a bend in the wire
that is now opposite of what it must become to pass through the bridge pins
with the half-twist.  So now, the wire has to bend back on itself to pass
the pins.

Capisce?
William R. Monroe


----- Original Message ----- 
From: "Cy Shuster" <741662027@theshusters.org>
To: "Pianotech" <pianotech@ptg.org>
Sent: Sunday, June 26, 2005 11:36 AM
Subject: Re: Piano wire tensile strength


Paul,

I've wrestled my brain around this statement, but I lose every time... :-)

Are you saying that any half turn (180 degrees) causes some effect at the
bridge that any whole turn (360) will not cause?

--Cy Shuster--
Bluefield, WV (but soon to be Boston, MA: NBSS class of '06)
  ----- Original Message ----- 
  From: PAULREVENKOJONES@aol.com
  To: pianotech@ptg.org
  Sent: Saturday, June 25, 2005 11:19 PM
  Subject: Re: Piano wire tensile strength


  One thing I do know is that it is positively not necessary to twist bass
strings more than 1 full turn to give them maximum stability (tight coils).
Any half turn is going to bend the wire back on itself at the bridge pins
and cause problems down the line.

  Paul R-J