Hammer flange question

[J W Stein]

MessageGeoff,

I would start with the lubricant...I love Protek myself. If the lubricant eases the hammers then you might be ok.  But, caution the customer that piano must be played to keep the "muslces" exercised.  If piano is not used often, the sluggishness could come back.  However, if the flanges are too tight because the wood is too swollen around wood, then you may have to replace pins.  As a rule of thumb, I like to make sure hammers swing at least 7 times during winter and 3 or 4 during summer.  Back and forth count as two swings.  

Jon
  ----- Original Message ----- 
  From: Geoff Sykes 
  To: Pianotech at Ptg. Org 
  Sent: Monday, October 30, 2006 12:19 PM
  Subject: Hammer flange question


  Greetings all --

  I have a customer with a Young Chang G-175 on which I'm going to go in and do some regulating. It's a 1987 so I know that it's in the middle of the growing action brackets years, but so far it shows little, if any, signs of this happening. 

  Most of the hammer flanges in this piano are too tight, giving from one to two swings at best. Today's question is about hammer flanges. 

  If a flange is too loose, the bushing would usually need to be re-pinned, yes? That said...

  I understand that there are three ways to deal with too-tight flanges:
      1) repin - remove the old pin, replace and/or ease the bushing and repin
      2) lubricate - with Protek, Goose-Juice, Naphtha+Silicon, etc.
      3) ease - Alcohol and water

  What would you consider to be the requirements for any of these treatments? In other words, why and when do you choose one of these treatments over the others?

  In the case of this Young Chang, the bushings and pins are clean, showing no signs of verdigris. 

  Looking forward to the discussion.

  -- Geoff Sykes
  -- Assoc. Los Angeles
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