[CAUT] Shank to Hammer weight spreadsheet

[Chris Solliday]

me too
Chris Solliday
  ----- Original Message ----- 
  From: Tim Coates 
  To: College and University Technicians 
  Sent: Thursday, February 21, 2008 9:51 PM
  Subject: Re: [CAUT] Shank to Hammer weight spreadsheet


  Jurgen and Jack,


  I have always found that thinning the shank raised the pitch.  I tried yesterday to lower the pitch by thinning the shank and couldn't do it.  The pitch went up every time I thinned a shank.  


  Perhaps Bluthner has a method that is different?


  Tim Coates




  On Feb 21, 2008, at 8:06 PM, Jack Houweling wrote:


Jurgen,Could you tell us what tool they used and also did they supportthe shank while scraping in any way? Or was it done outsideof the action?Jack Houweling Thinner shanks will be more flexible and less stiff, hence they will 
have a resonating frequency.  I saw techs "smoothing out" the shank 
frequencies in the Blüthner factory,  They would sort shanks so that 
similar sounding ones were together.  If one shank stood out, they 
could lower its pitch by thinning the shank through judicious scraping. 
  The pitch could only be adjusted downward.

Jurgen Goering




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