touch weight changes

[Farrell]

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I need to tread this water carefully because I am aware that I am no =
expert on this subject. But most responses to this question have =
included suggestions regarding changes to key leading or action =
geometry. I would suggest that if DW was a "pretty even 52 grams" and =
then "two weeks later, the weight was back over 60 grams" the solution =
will be found in regulating friction. The source of such DW changes =
necessarily excludes issues of key leading and/or action geometry - =
unless, of course, these factors are changing over the course of two =
weeks.

Terry Farrell

----- Original Message -----=20
From: "Carol Beigel" <crbrpt@bellatlantic.net>
To: <pianotech@ptg.org>
Sent: Wednesday, December 10, 2003 9:54 PM
Subject: touch weight changes


> What could make the downweight of a good, 2 year old piano action =
change in
> less than two weeks?  About 3 weeks ago, the complaint was that this =
Boston
> grand piano action was causing the owner, who practiced about 5 hours =
a day,
> was getting pains in his wrist.  However, when he practiced on his =
church
> piano, a Steinway grand, he had no pain.
>=20
> The starting downweight was over 65 grams.  After I eased the balance
> centers, cleaned the center pins, put teflon powder on the knuckles,
> adjusted the repetition heights and the jacks, the downweight was a =
pretty
> even 52 grams and the guy was happy.
>=20
> Two weeks later, the weight was back over 60 grams and his wrists are
> hurting.. Solutions or suggestions?
>=20
> Carol Beigel
>=20
>=20
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
> 
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