back action replacement questions

Gene Nelson nelsong at pbic.net
Sat Jul 29 20:24:41 MDT 2006


Thank you for the link,
I have read this material as well as Dixon's article in the 2001 Journal - the lift lever flange friction is not specified anywhere that I can see. Renner does give the spring tension adjustment numbers but I do not have a gram gauge to do that.
Gene
  ----- Original Message ----- 
  From: Horace Greeley 
  To: Pianotech List 
  Sent: Saturday, July 29, 2006 6:52 PM
  Subject: Re: back action replacement questions



  Hi, Gene,

  At 06:23 PM 7/29/2006, you wrote:


    Also, how much friction on the lift lever flanges? The Renner parts are about 4.5 to 5 grams from the factory - they are a bit tight in my opinion - should I try for about 2 to 3 grams? I am curious because the 4.5 gram is consistant for the entire set with very slight variation. 

  Check out:

  http://www.lloydmeyer.com/PDF/Damper.pdf

  This is written by Chris and Karen Robinson...complete with pictures & etc.

  Best.

  Horace
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