tuning pin torque

[Stéphane Collin]

Hi all.

Here in Belgium, the average humidity level is 50 %.  I really like the 90 in lbs figure.  Here, at 120 in lbs, the pins tend to jump (and to wear out my arm), while at 60 in lbs, I feel it is the ultimate limit where the note will stay in tune, at least in the long bridge section (in the bass, I think it won't hold).  I measure torque with string on tension or not, in any case just comparing torque clockwise with torque counter clockwise, and considering the half of the sum of those two values to be my reference value.  Anyway, the difference between the two readings is never that large.  At 90 in lbs, I am happy.

Best regards.

Stéphane Collin.
  ----- Original Message ----- 
  From: David Chadwick 
  To: pianotech 
  Sent: Thursday, July 20, 2006 3:40 PM
  Subject: tuning pin torque


   I have a new S&S "D" that I need to measure the pin torque and I've been looking in all the literature I have, searched the pianotech archives and I have found no information on what would be acceptable ft/lb readings. Also, should I have the wire at the proper tension or should I get a reading with the wire removed? 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20060720/617a0f42/attachment.html