Static weigh-off question for Dave

[David Love]

Versus dynamic, i.e., bodies not in motion versus in motion.  The static
weight of the key (the one we measure by the way), does not take into
account inertia and other factors that influence the dynamics of touch.  We
can achieve a 50 gram static downweight on a key that weighs 100 grams or
100 lbs.  The dynamic performance of each of those will be quite different.


 

David Love
davidlovepianos at comcast.net
www.davidlovepianos.com 

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of KeyKat88 at aol.com
Sent: Thursday, July 27, 2006 12:46 AM
To: pianotech at ptg.org
Subject: Static weigh-off question for Dave

 

Greetings, 

           

            What do you mean by static weight?  

 

Julia Gottshall

Reading. PA

 

 In a message dated 7/11/2006 9:09:14 PM Eastern Standard Time,
davidlovepianos at comcast.net writes:

With respect to the question of how many leads it has as much to do with
position as number and really boils down to the overall front weight of the
keys.  If there are a lot of leads or if they are all pushed way forward on
the key, a high measured front weight can introduce inertial problems such
that even if the static weigh-off is light the dynamic performance can
suffer from a feeling of sluggishess.  That's why overcoming weight problems
by simply adding more lead can be counterproductive.  How many leads and
their position in the key will give you a quick indication if there might be
a problem in this area.    

 

David Love
davidlovepianos at comcast.net

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