[pianotech] Damper Lever Resistance

[David Love]

That's helpful and is, as I suspected, quite a bit lower than the Renner
installation manual which calls for a range graduated from about 30 at note
1 to about 24 at note 52 (averages).  I've found that to be a bit too high
and creates an unpleasant difference between pedaled and unpedaled
touchweight dynamics.  My tendency has been to go even a bit lower than you
have but I do on occasion run into problems where the damping is not quite
as fast as I'd like in the lower notes.  Slight variations in the tensions
do seem in order depending on the size of the piano and the amount of mass
especially in the bass strings.  

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Jon Page
Sent: Sunday, November 07, 2010 1:04 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Damper Lever Resistance

I set the spring tension on a digital scale with the lever a little higher
than its rest position. Starting with around 28g in the bass tapering
to 22g at the tenor break and tapering further to 10g if the springs
encompass the entire tenor section.

I make springs of lighter diameter to cover the higher underlevers
so as not to reduce the tension on larger diameter springs. This is
in a effort to not have a large difference between sprung and unsprung.
-- 

Regards,

Jon Page