Relative Humidity Changes and Old Pianos, was: CA and Acceleratorand Happy Clients!

[Cy Shuster]

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Alan's in the UK (check his email).  It really helps to add your =
location to your signature!

--Cy--
Bluefield, WV
  ----- Original Message -----=20
  From: Farrell=20
  To: Pianotech=20
  Sent: Sunday, May 22, 2005 6:42 PM
  Subject: Re: Relative Humidity Changes and Old Pianos, was: CA and =
Acceleratorand Happy Clients!


    AF wrote:

    Most of the pianos in this country are over 80 years old=20

    Really? Says who? I know some days it seems that way, but I don't =
think that is true at all.

    and have acclimatized to a RH of 65%.=20

    Really? Says who? Where do you get such data from? Most environments =
do not have fluctuating relative humidity levels?

    Ideally, the installation of a climate control system should =
maintain that 65% to avoid any damage.=20

    Why would a slightly drier environment cause any damage? All the =
wood in that piano grew for 100 to several hundred years at something =
like 50% MC (what is the moisture content of green wood?). Somebody =
dried it out after they cut the darn thing down - didn't do much damage =
then - why would a small change in MC damage it now? IMHO, hesitating to =
create a stable 42% RH (or there abouts) environment for an old piano is =
nonsense.

    The Dampp Chaser literature that I have does not state whether you =
can set it to maintain existing conditions, and am therefore very =
reluctant to recommend the system for old instruments; new ones, fine.

    New piano, old piano, same difference, IMHO.

    Terry Farrell
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